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|
// SPDX-License-Identifier: GPL-2.0-or-later OR BSD-3-Clause
/*
* Copyright (C) 2022, STMicroelectronics - All Rights Reserved
* Author: Gabriel Fernandez <gabriel.fernandez@foss.st.com> for STMicroelectronics.
*/
#define LOG_CATEGORY UCLASS_CLK
#include <clk-uclass.h>
#include <dm.h>
#include <log.h>
#include <asm/io.h>
#include <dt-bindings/clock/stm32mp13-clks.h>
#include <linux/clk-provider.h>
#include <dt-bindings/clock/stm32mp13-clksrc.h>
#include <asm/arch/sys_proto.h>
#include <asm/global_data.h>
#include <clk-uclass.h>
#include <div64.h>
#include <dm/device_compat.h>
#include <init.h>
#include <linux/bitops.h>
#include <linux/io.h>
#include <linux/iopoll.h>
#include <regmap.h>
#include <spl.h>
#include <syscon.h>
#include <time.h>
#include <vsprintf.h>
#include <asm/arch/sys_proto.h>
#include "clk-stm32-core.h"
#include "stm32mp13_rcc.h"
DECLARE_GLOBAL_DATA_PTR;
static const char * const adc12_src[] = {
"pll4_r", "ck_per", "pll3_q"
};
static const char * const dcmipp_src[] = {
"ck_axi", "pll2_q", "pll4_p", "ck_per",
};
static const char * const eth12_src[] = {
"pll4_p", "pll3_q"
};
static const char * const fdcan_src[] = {
"ck_hse", "pll3_q", "pll4_q", "pll4_r"
};
static const char * const fmc_src[] = {
"ck_axi", "pll3_r", "pll4_p", "ck_per"
};
static const char * const i2c12_src[] = {
"pclk1", "pll4_r", "ck_hsi", "ck_csi"
};
static const char * const i2c345_src[] = {
"pclk6", "pll4_r", "ck_hsi", "ck_csi"
};
static const char * const lptim1_src[] = {
"pclk1", "pll4_p", "pll3_q", "ck_lse", "ck_lsi", "ck_per"
};
static const char * const lptim23_src[] = {
"pclk3", "pll4_q", "ck_per", "ck_lse", "ck_lsi"
};
static const char * const lptim45_src[] = {
"pclk3", "pll4_p", "pll3_q", "ck_lse", "ck_lsi", "ck_per"
};
static const char * const mco1_src[] = {
"ck_hsi", "ck_hse", "ck_csi", "ck_lsi", "ck_lse"
};
static const char * const mco2_src[] = {
"ck_mpu", "ck_axi", "ck_mlahb", "pll4_p", "ck_hse", "ck_hsi"
};
static const char * const qspi_src[] = {
"ck_axi", "pll3_r", "pll4_p", "ck_per"
};
static const char * const rng1_src[] = {
"ck_csi", "pll4_r", "reserved", "ck_lsi"
};
static const char * const saes_src[] = {
"ck_axi", "ck_per", "pll4_r", "ck_lsi"
};
static const char * const sai1_src[] = {
"pll4_q", "pll3_q", "i2s_ckin", "ck_per", "pll3_r"
};
static const char * const sai2_src[] = {
"pll4_q", "pll3_q", "i2s_ckin", "ck_per", "spdif_ck_symb", "pll3_r"
};
static const char * const sdmmc12_src[] = {
"ck_axi", "pll3_r", "pll4_p", "ck_hsi"
};
static const char * const spdif_src[] = {
"pll4_p", "pll3_q", "ck_hsi"
};
static const char * const spi123_src[] = {
"pll4_p", "pll3_q", "i2s_ckin", "ck_per", "pll3_r"
};
static const char * const spi4_src[] = {
"pclk6", "pll4_q", "ck_hsi", "ck_csi", "ck_hse", "i2s_ckin"
};
static const char * const spi5_src[] = {
"pclk6", "pll4_q", "ck_hsi", "ck_csi", "ck_hse"
};
static const char * const stgen_src[] = {
"ck_hsi", "ck_hse"
};
static const char * const usart12_src[] = {
"pclk6", "pll3_q", "ck_hsi", "ck_csi", "pll4_q", "ck_hse"
};
static const char * const usart34578_src[] = {
"pclk1", "pll4_q", "ck_hsi", "ck_csi", "ck_hse"
};
static const char * const usart6_src[] = {
"pclk2", "pll4_q", "ck_hsi", "ck_csi", "ck_hse"
};
static const char * const usbo_src[] = {
"pll4_r", "ck_usbo_48m"
};
static const char * const usbphy_src[] = {
"ck_hse", "pll4_r", "clk-hse-div2"
};
#define MUX_CFG(id, src, _offset, _shift, _witdh) \
[id] = { \
.num_parents = ARRAY_SIZE(src), \
.parent_names = (src), \
.reg_off = (_offset), \
.shift = (_shift), \
.width = (_witdh), \
}
static const struct stm32_mux_cfg stm32mp13_muxes[] = {
MUX_CFG(MUX_I2C12, i2c12_src, RCC_I2C12CKSELR, 0, 3),
MUX_CFG(MUX_LPTIM45, lptim45_src, RCC_LPTIM45CKSELR, 0, 3),
MUX_CFG(MUX_SPI23, spi123_src, RCC_SPI2S23CKSELR, 0, 3),
MUX_CFG(MUX_UART35, usart34578_src, RCC_UART35CKSELR, 0, 3),
MUX_CFG(MUX_UART78, usart34578_src, RCC_UART78CKSELR, 0, 3),
MUX_CFG(MUX_ADC1, adc12_src, RCC_ADC12CKSELR, 0, 2),
MUX_CFG(MUX_ADC2, adc12_src, RCC_ADC12CKSELR, 2, 2),
MUX_CFG(MUX_DCMIPP, dcmipp_src, RCC_DCMIPPCKSELR, 0, 2),
MUX_CFG(MUX_ETH1, eth12_src, RCC_ETH12CKSELR, 0, 2),
MUX_CFG(MUX_ETH2, eth12_src, RCC_ETH12CKSELR, 8, 2),
MUX_CFG(MUX_FDCAN, fdcan_src, RCC_FDCANCKSELR, 0, 2),
MUX_CFG(MUX_FMC, fmc_src, RCC_FMCCKSELR, 0, 2),
MUX_CFG(MUX_I2C3, i2c345_src, RCC_I2C345CKSELR, 0, 3),
MUX_CFG(MUX_I2C4, i2c345_src, RCC_I2C345CKSELR, 3, 3),
MUX_CFG(MUX_I2C5, i2c345_src, RCC_I2C345CKSELR, 6, 3),
MUX_CFG(MUX_LPTIM1, lptim1_src, RCC_LPTIM1CKSELR, 0, 3),
MUX_CFG(MUX_LPTIM2, lptim23_src, RCC_LPTIM23CKSELR, 0, 3),
MUX_CFG(MUX_LPTIM3, lptim23_src, RCC_LPTIM23CKSELR, 3, 3),
MUX_CFG(MUX_MCO1, mco1_src, RCC_MCO1CFGR, 0, 3),
MUX_CFG(MUX_MCO2, mco2_src, RCC_MCO2CFGR, 0, 3),
MUX_CFG(MUX_QSPI, qspi_src, RCC_QSPICKSELR, 0, 2),
MUX_CFG(MUX_RNG1, rng1_src, RCC_RNG1CKSELR, 0, 2),
MUX_CFG(MUX_SAES, saes_src, RCC_SAESCKSELR, 0, 2),
MUX_CFG(MUX_SAI1, sai1_src, RCC_SAI1CKSELR, 0, 3),
MUX_CFG(MUX_SAI2, sai2_src, RCC_SAI2CKSELR, 0, 3),
MUX_CFG(MUX_SDMMC1, sdmmc12_src, RCC_SDMMC12CKSELR, 0, 3),
MUX_CFG(MUX_SDMMC2, sdmmc12_src, RCC_SDMMC12CKSELR, 3, 3),
MUX_CFG(MUX_SPDIF, spdif_src, RCC_SPDIFCKSELR, 0, 2),
MUX_CFG(MUX_SPI1, spi123_src, RCC_SPI2S1CKSELR, 0, 3),
MUX_CFG(MUX_SPI4, spi4_src, RCC_SPI45CKSELR, 0, 3),
MUX_CFG(MUX_SPI5, spi5_src, RCC_SPI45CKSELR, 3, 3),
MUX_CFG(MUX_STGEN, stgen_src, RCC_STGENCKSELR, 0, 2),
MUX_CFG(MUX_UART1, usart12_src, RCC_UART12CKSELR, 0, 3),
MUX_CFG(MUX_UART2, usart12_src, RCC_UART12CKSELR, 3, 3),
MUX_CFG(MUX_UART4, usart34578_src, RCC_UART4CKSELR, 0, 3),
MUX_CFG(MUX_UART6, usart6_src, RCC_UART6CKSELR, 0, 3),
MUX_CFG(MUX_USBO, usbo_src, RCC_USBCKSELR, 4, 1),
MUX_CFG(MUX_USBPHY, usbphy_src, RCC_USBCKSELR, 0, 2),
};
enum enum_gate_cfg {
GATE_ZERO, /* reserved for no gate */
GATE_MCO1,
GATE_MCO2,
GATE_DBGCK,
GATE_TRACECK,
GATE_DDRC1,
GATE_DDRC1LP,
GATE_DDRPHYC,
GATE_DDRPHYCLP,
GATE_DDRCAPB,
GATE_DDRCAPBLP,
GATE_AXIDCG,
GATE_DDRPHYCAPB,
GATE_DDRPHYCAPBLP,
GATE_TIM2,
GATE_TIM3,
GATE_TIM4,
GATE_TIM5,
GATE_TIM6,
GATE_TIM7,
GATE_LPTIM1,
GATE_SPI2,
GATE_SPI3,
GATE_USART3,
GATE_UART4,
GATE_UART5,
GATE_UART7,
GATE_UART8,
GATE_I2C1,
GATE_I2C2,
GATE_SPDIF,
GATE_TIM1,
GATE_TIM8,
GATE_SPI1,
GATE_USART6,
GATE_SAI1,
GATE_SAI2,
GATE_DFSDM,
GATE_ADFSDM,
GATE_FDCAN,
GATE_LPTIM2,
GATE_LPTIM3,
GATE_LPTIM4,
GATE_LPTIM5,
GATE_VREF,
GATE_DTS,
GATE_PMBCTRL,
GATE_HDP,
GATE_SYSCFG,
GATE_DCMIPP,
GATE_DDRPERFM,
GATE_IWDG2APB,
GATE_USBPHY,
GATE_STGENRO,
GATE_LTDC,
GATE_TZC,
GATE_ETZPC,
GATE_IWDG1APB,
GATE_BSEC,
GATE_STGENC,
GATE_USART1,
GATE_USART2,
GATE_SPI4,
GATE_SPI5,
GATE_I2C3,
GATE_I2C4,
GATE_I2C5,
GATE_TIM12,
GATE_TIM13,
GATE_TIM14,
GATE_TIM15,
GATE_TIM16,
GATE_TIM17,
GATE_DMA1,
GATE_DMA2,
GATE_DMAMUX1,
GATE_DMA3,
GATE_DMAMUX2,
GATE_ADC1,
GATE_ADC2,
GATE_USBO,
GATE_TSC,
GATE_GPIOA,
GATE_GPIOB,
GATE_GPIOC,
GATE_GPIOD,
GATE_GPIOE,
GATE_GPIOF,
GATE_GPIOG,
GATE_GPIOH,
GATE_GPIOI,
GATE_PKA,
GATE_SAES,
GATE_CRYP1,
GATE_HASH1,
GATE_RNG1,
GATE_BKPSRAM,
GATE_AXIMC,
GATE_MCE,
GATE_ETH1CK,
GATE_ETH1TX,
GATE_ETH1RX,
GATE_ETH1MAC,
GATE_FMC,
GATE_QSPI,
GATE_SDMMC1,
GATE_SDMMC2,
GATE_CRC1,
GATE_USBH,
GATE_ETH2CK,
GATE_ETH2TX,
GATE_ETH2RX,
GATE_ETH2MAC,
GATE_ETH1STP,
GATE_ETH2STP,
GATE_MDMA
};
#define GATE_CFG(id, _offset, _bit_idx, _offset_clr) \
[id] = { \
.reg_off = (_offset), \
.bit_idx = (_bit_idx), \
.set_clr = (_offset_clr), \
}
static const struct stm32_gate_cfg stm32mp13_gates[] = {
GATE_CFG(GATE_MCO1, RCC_MCO1CFGR, 12, 0),
GATE_CFG(GATE_MCO2, RCC_MCO2CFGR, 12, 0),
GATE_CFG(GATE_DBGCK, RCC_DBGCFGR, 8, 0),
GATE_CFG(GATE_TRACECK, RCC_DBGCFGR, 9, 0),
GATE_CFG(GATE_DDRC1, RCC_DDRITFCR, 0, 0),
GATE_CFG(GATE_DDRC1LP, RCC_DDRITFCR, 1, 0),
GATE_CFG(GATE_DDRPHYC, RCC_DDRITFCR, 4, 0),
GATE_CFG(GATE_DDRPHYCLP, RCC_DDRITFCR, 5, 0),
GATE_CFG(GATE_DDRCAPB, RCC_DDRITFCR, 6, 0),
GATE_CFG(GATE_DDRCAPBLP, RCC_DDRITFCR, 7, 0),
GATE_CFG(GATE_AXIDCG, RCC_DDRITFCR, 8, 0),
GATE_CFG(GATE_DDRPHYCAPB, RCC_DDRITFCR, 9, 0),
GATE_CFG(GATE_DDRPHYCAPBLP, RCC_DDRITFCR, 10, 0),
GATE_CFG(GATE_TIM2, RCC_MP_APB1ENSETR, 0, 1),
GATE_CFG(GATE_TIM3, RCC_MP_APB1ENSETR, 1, 1),
GATE_CFG(GATE_TIM4, RCC_MP_APB1ENSETR, 2, 1),
GATE_CFG(GATE_TIM5, RCC_MP_APB1ENSETR, 3, 1),
GATE_CFG(GATE_TIM6, RCC_MP_APB1ENSETR, 4, 1),
GATE_CFG(GATE_TIM7, RCC_MP_APB1ENSETR, 5, 1),
GATE_CFG(GATE_LPTIM1, RCC_MP_APB1ENSETR, 9, 1),
GATE_CFG(GATE_SPI2, RCC_MP_APB1ENSETR, 11, 1),
GATE_CFG(GATE_SPI3, RCC_MP_APB1ENSETR, 12, 1),
GATE_CFG(GATE_USART3, RCC_MP_APB1ENSETR, 15, 1),
GATE_CFG(GATE_UART4, RCC_MP_APB1ENSETR, 16, 1),
GATE_CFG(GATE_UART5, RCC_MP_APB1ENSETR, 17, 1),
GATE_CFG(GATE_UART7, RCC_MP_APB1ENSETR, 18, 1),
GATE_CFG(GATE_UART8, RCC_MP_APB1ENSETR, 19, 1),
GATE_CFG(GATE_I2C1, RCC_MP_APB1ENSETR, 21, 1),
GATE_CFG(GATE_I2C2, RCC_MP_APB1ENSETR, 22, 1),
GATE_CFG(GATE_SPDIF, RCC_MP_APB1ENSETR, 26, 1),
GATE_CFG(GATE_TIM1, RCC_MP_APB2ENSETR, 0, 1),
GATE_CFG(GATE_TIM8, RCC_MP_APB2ENSETR, 1, 1),
GATE_CFG(GATE_SPI1, RCC_MP_APB2ENSETR, 8, 1),
GATE_CFG(GATE_USART6, RCC_MP_APB2ENSETR, 13, 1),
GATE_CFG(GATE_SAI1, RCC_MP_APB2ENSETR, 16, 1),
GATE_CFG(GATE_SAI2, RCC_MP_APB2ENSETR, 17, 1),
GATE_CFG(GATE_DFSDM, RCC_MP_APB2ENSETR, 20, 1),
GATE_CFG(GATE_ADFSDM, RCC_MP_APB2ENSETR, 21, 1),
GATE_CFG(GATE_FDCAN, RCC_MP_APB2ENSETR, 24, 1),
GATE_CFG(GATE_LPTIM2, RCC_MP_APB3ENSETR, 0, 1),
GATE_CFG(GATE_LPTIM3, RCC_MP_APB3ENSETR, 1, 1),
GATE_CFG(GATE_LPTIM4, RCC_MP_APB3ENSETR, 2, 1),
GATE_CFG(GATE_LPTIM5, RCC_MP_APB3ENSETR, 3, 1),
GATE_CFG(GATE_VREF, RCC_MP_APB3ENSETR, 13, 1),
GATE_CFG(GATE_DTS, RCC_MP_APB3ENSETR, 16, 1),
GATE_CFG(GATE_PMBCTRL, RCC_MP_APB3ENSETR, 17, 1),
GATE_CFG(GATE_HDP, RCC_MP_APB3ENSETR, 20, 1),
GATE_CFG(GATE_SYSCFG, RCC_MP_NS_APB3ENSETR, 0, 1),
GATE_CFG(GATE_DCMIPP, RCC_MP_APB4ENSETR, 1, 1),
GATE_CFG(GATE_DDRPERFM, RCC_MP_APB4ENSETR, 8, 1),
GATE_CFG(GATE_IWDG2APB, RCC_MP_APB4ENSETR, 15, 1),
GATE_CFG(GATE_USBPHY, RCC_MP_APB4ENSETR, 16, 1),
GATE_CFG(GATE_STGENRO, RCC_MP_APB4ENSETR, 20, 1),
GATE_CFG(GATE_LTDC, RCC_MP_NS_APB4ENSETR, 0, 1),
GATE_CFG(GATE_TZC, RCC_MP_APB5ENSETR, 11, 1),
GATE_CFG(GATE_ETZPC, RCC_MP_APB5ENSETR, 13, 1),
GATE_CFG(GATE_IWDG1APB, RCC_MP_APB5ENSETR, 15, 1),
GATE_CFG(GATE_BSEC, RCC_MP_APB5ENSETR, 16, 1),
GATE_CFG(GATE_STGENC, RCC_MP_APB5ENSETR, 20, 1),
GATE_CFG(GATE_USART1, RCC_MP_APB6ENSETR, 0, 1),
GATE_CFG(GATE_USART2, RCC_MP_APB6ENSETR, 1, 1),
GATE_CFG(GATE_SPI4, RCC_MP_APB6ENSETR, 2, 1),
GATE_CFG(GATE_SPI5, RCC_MP_APB6ENSETR, 3, 1),
GATE_CFG(GATE_I2C3, RCC_MP_APB6ENSETR, 4, 1),
GATE_CFG(GATE_I2C4, RCC_MP_APB6ENSETR, 5, 1),
GATE_CFG(GATE_I2C5, RCC_MP_APB6ENSETR, 6, 1),
GATE_CFG(GATE_TIM12, RCC_MP_APB6ENSETR, 7, 1),
GATE_CFG(GATE_TIM13, RCC_MP_APB6ENSETR, 8, 1),
GATE_CFG(GATE_TIM14, RCC_MP_APB6ENSETR, 9, 1),
GATE_CFG(GATE_TIM15, RCC_MP_APB6ENSETR, 10, 1),
GATE_CFG(GATE_TIM16, RCC_MP_APB6ENSETR, 11, 1),
GATE_CFG(GATE_TIM17, RCC_MP_APB6ENSETR, 12, 1),
GATE_CFG(GATE_DMA1, RCC_MP_AHB2ENSETR, 0, 1),
GATE_CFG(GATE_DMA2, RCC_MP_AHB2ENSETR, 1, 1),
GATE_CFG(GATE_DMAMUX1, RCC_MP_AHB2ENSETR, 2, 1),
GATE_CFG(GATE_DMA3, RCC_MP_AHB2ENSETR, 3, 1),
GATE_CFG(GATE_DMAMUX2, RCC_MP_AHB2ENSETR, 4, 1),
GATE_CFG(GATE_ADC1, RCC_MP_AHB2ENSETR, 5, 1),
GATE_CFG(GATE_ADC2, RCC_MP_AHB2ENSETR, 6, 1),
GATE_CFG(GATE_USBO, RCC_MP_AHB2ENSETR, 8, 1),
GATE_CFG(GATE_TSC, RCC_MP_AHB4ENSETR, 15, 1),
GATE_CFG(GATE_GPIOA, RCC_MP_NS_AHB4ENSETR, 0, 1),
GATE_CFG(GATE_GPIOB, RCC_MP_NS_AHB4ENSETR, 1, 1),
GATE_CFG(GATE_GPIOC, RCC_MP_NS_AHB4ENSETR, 2, 1),
GATE_CFG(GATE_GPIOD, RCC_MP_NS_AHB4ENSETR, 3, 1),
GATE_CFG(GATE_GPIOE, RCC_MP_NS_AHB4ENSETR, 4, 1),
GATE_CFG(GATE_GPIOF, RCC_MP_NS_AHB4ENSETR, 5, 1),
GATE_CFG(GATE_GPIOG, RCC_MP_NS_AHB4ENSETR, 6, 1),
GATE_CFG(GATE_GPIOH, RCC_MP_NS_AHB4ENSETR, 7, 1),
GATE_CFG(GATE_GPIOI, RCC_MP_NS_AHB4ENSETR, 8, 1),
GATE_CFG(GATE_PKA, RCC_MP_AHB5ENSETR, 2, 1),
GATE_CFG(GATE_SAES, RCC_MP_AHB5ENSETR, 3, 1),
GATE_CFG(GATE_CRYP1, RCC_MP_AHB5ENSETR, 4, 1),
GATE_CFG(GATE_HASH1, RCC_MP_AHB5ENSETR, 5, 1),
GATE_CFG(GATE_RNG1, RCC_MP_AHB5ENSETR, 6, 1),
GATE_CFG(GATE_BKPSRAM, RCC_MP_AHB5ENSETR, 8, 1),
GATE_CFG(GATE_AXIMC, RCC_MP_AHB5ENSETR, 16, 1),
GATE_CFG(GATE_MCE, RCC_MP_AHB6ENSETR, 1, 1),
GATE_CFG(GATE_ETH1CK, RCC_MP_AHB6ENSETR, 7, 1),
GATE_CFG(GATE_ETH1TX, RCC_MP_AHB6ENSETR, 8, 1),
GATE_CFG(GATE_ETH1RX, RCC_MP_AHB6ENSETR, 9, 1),
GATE_CFG(GATE_ETH1MAC, RCC_MP_AHB6ENSETR, 10, 1),
GATE_CFG(GATE_FMC, RCC_MP_AHB6ENSETR, 12, 1),
GATE_CFG(GATE_QSPI, RCC_MP_AHB6ENSETR, 14, 1),
GATE_CFG(GATE_SDMMC1, RCC_MP_AHB6ENSETR, 16, 1),
GATE_CFG(GATE_SDMMC2, RCC_MP_AHB6ENSETR, 17, 1),
GATE_CFG(GATE_CRC1, RCC_MP_AHB6ENSETR, 20, 1),
GATE_CFG(GATE_USBH, RCC_MP_AHB6ENSETR, 24, 1),
GATE_CFG(GATE_ETH2CK, RCC_MP_AHB6ENSETR, 27, 1),
GATE_CFG(GATE_ETH2TX, RCC_MP_AHB6ENSETR, 28, 1),
GATE_CFG(GATE_ETH2RX, RCC_MP_AHB6ENSETR, 29, 1),
GATE_CFG(GATE_ETH2MAC, RCC_MP_AHB6ENSETR, 30, 1),
GATE_CFG(GATE_ETH1STP, RCC_MP_AHB6LPENSETR, 11, 1),
GATE_CFG(GATE_ETH2STP, RCC_MP_AHB6LPENSETR, 31, 1),
GATE_CFG(GATE_MDMA, RCC_MP_NS_AHB6ENSETR, 0, 1),
};
static const struct clk_div_table ck_trace_div_table[] = {
{ 0, 1 }, { 1, 2 }, { 2, 4 }, { 3, 8 },
{ 4, 16 }, { 5, 16 }, { 6, 16 }, { 7, 16 },
{ 0 },
};
#define DIV_CFG(id, _offset, _shift, _width, _flags, _table) \
[id] = { \
.reg_off = _offset, \
.shift = _shift, \
.width = _width, \
.div_flags = _flags, \
.table = _table, \
}
static const struct stm32_div_cfg stm32mp13_dividers[] = {
DIV_CFG(DIV_MCO1, RCC_MCO1CFGR, 4, 4, 0, NULL),
DIV_CFG(DIV_MCO2, RCC_MCO2CFGR, 4, 4, 0, NULL),
DIV_CFG(DIV_TRACE, RCC_DBGCFGR, 0, 3, 0, ck_trace_div_table),
DIV_CFG(DIV_ETH1PTP, RCC_ETH12CKSELR, 4, 4, 0, NULL),
DIV_CFG(DIV_ETH2PTP, RCC_ETH12CKSELR, 12, 4, 0, NULL),
};
struct clk_stm32_security {
u16 offset;
u8 bit_idx;
};
enum securit_clk {
SECF_NONE,
SECF_LPTIM2,
SECF_LPTIM3,
SECF_VREF,
SECF_DCMIPP,
SECF_USBPHY,
SECF_RTC,
SECF_TZC,
SECF_ETZPC,
SECF_IWDG1,
SECF_BSEC,
SECF_STGENC,
SECF_STGENRO,
SECF_USART1,
SECF_USART2,
SECF_SPI4,
SECF_SPI5,
SECF_I2C3,
SECF_I2C4,
SECF_I2C5,
SECF_TIM12,
SECF_TIM13,
SECF_TIM14,
SECF_TIM15,
SECF_TIM16,
SECF_TIM17,
SECF_DMA3,
SECF_DMAMUX2,
SECF_ADC1,
SECF_ADC2,
SECF_USBO,
SECF_TSC,
SECF_PKA,
SECF_SAES,
SECF_CRYP1,
SECF_HASH1,
SECF_RNG1,
SECF_BKPSRAM,
SECF_MCE,
SECF_FMC,
SECF_QSPI,
SECF_SDMMC1,
SECF_SDMMC2,
SECF_ETH1CK,
SECF_ETH1TX,
SECF_ETH1RX,
SECF_ETH1MAC,
SECF_ETH1STP,
SECF_ETH2CK,
SECF_ETH2TX,
SECF_ETH2RX,
SECF_ETH2MAC,
SECF_ETH2STP,
SECF_MCO1,
SECF_MCO2
};
#define SECF(_sec_id, _offset, _bit_idx) \
[_sec_id] = { \
.offset = _offset, \
.bit_idx = _bit_idx, \
}
#ifdef CONFIG_TFABOOT
static const struct clk_stm32_security stm32mp13_security[] = {
SECF(SECF_LPTIM2, RCC_APB3SECSR, RCC_APB3SECSR_LPTIM2SECF),
SECF(SECF_LPTIM3, RCC_APB3SECSR, RCC_APB3SECSR_LPTIM3SECF),
SECF(SECF_VREF, RCC_APB3SECSR, RCC_APB3SECSR_VREFSECF),
SECF(SECF_DCMIPP, RCC_APB4SECSR, RCC_APB4SECSR_DCMIPPSECF),
SECF(SECF_USBPHY, RCC_APB4SECSR, RCC_APB4SECSR_USBPHYSECF),
SECF(SECF_RTC, RCC_APB5SECSR, RCC_APB5SECSR_RTCSECF),
SECF(SECF_TZC, RCC_APB5SECSR, RCC_APB5SECSR_TZCSECF),
SECF(SECF_ETZPC, RCC_APB5SECSR, RCC_APB5SECSR_ETZPCSECF),
SECF(SECF_IWDG1, RCC_APB5SECSR, RCC_APB5SECSR_IWDG1SECF),
SECF(SECF_BSEC, RCC_APB5SECSR, RCC_APB5SECSR_BSECSECF),
SECF(SECF_STGENC, RCC_APB5SECSR, RCC_APB5SECSR_STGENCSECF),
SECF(SECF_STGENRO, RCC_APB5SECSR, RCC_APB5SECSR_STGENROSECF),
SECF(SECF_USART1, RCC_APB6SECSR, RCC_APB6SECSR_USART1SECF),
SECF(SECF_USART2, RCC_APB6SECSR, RCC_APB6SECSR_USART2SECF),
SECF(SECF_SPI4, RCC_APB6SECSR, RCC_APB6SECSR_SPI4SECF),
SECF(SECF_SPI5, RCC_APB6SECSR, RCC_APB6SECSR_SPI5SECF),
SECF(SECF_I2C3, RCC_APB6SECSR, RCC_APB6SECSR_I2C3SECF),
SECF(SECF_I2C4, RCC_APB6SECSR, RCC_APB6SECSR_I2C4SECF),
SECF(SECF_I2C5, RCC_APB6SECSR, RCC_APB6SECSR_I2C5SECF),
SECF(SECF_TIM12, RCC_APB6SECSR, RCC_APB6SECSR_TIM12SECF),
SECF(SECF_TIM13, RCC_APB6SECSR, RCC_APB6SECSR_TIM13SECF),
SECF(SECF_TIM14, RCC_APB6SECSR, RCC_APB6SECSR_TIM14SECF),
SECF(SECF_TIM15, RCC_APB6SECSR, RCC_APB6SECSR_TIM15SECF),
SECF(SECF_TIM16, RCC_APB6SECSR, RCC_APB6SECSR_TIM16SECF),
SECF(SECF_TIM17, RCC_APB6SECSR, RCC_APB6SECSR_TIM17SECF),
SECF(SECF_DMA3, RCC_AHB2SECSR, RCC_AHB2SECSR_DMA3SECF),
SECF(SECF_DMAMUX2, RCC_AHB2SECSR, RCC_AHB2SECSR_DMAMUX2SECF),
SECF(SECF_ADC1, RCC_AHB2SECSR, RCC_AHB2SECSR_ADC1SECF),
SECF(SECF_ADC2, RCC_AHB2SECSR, RCC_AHB2SECSR_ADC2SECF),
SECF(SECF_USBO, RCC_AHB2SECSR, RCC_AHB2SECSR_USBOSECF),
SECF(SECF_TSC, RCC_AHB4SECSR, RCC_AHB4SECSR_TSCSECF),
SECF(SECF_PKA, RCC_AHB5SECSR, RCC_AHB5SECSR_PKASECF),
SECF(SECF_SAES, RCC_AHB5SECSR, RCC_AHB5SECSR_SAESSECF),
SECF(SECF_CRYP1, RCC_AHB5SECSR, RCC_AHB5SECSR_CRYP1SECF),
SECF(SECF_HASH1, RCC_AHB5SECSR, RCC_AHB5SECSR_HASH1SECF),
SECF(SECF_RNG1, RCC_AHB5SECSR, RCC_AHB5SECSR_RNG1SECF),
SECF(SECF_BKPSRAM, RCC_AHB5SECSR, RCC_AHB5SECSR_BKPSRAMSECF),
SECF(SECF_MCE, RCC_AHB6SECSR, RCC_AHB6SECSR_MCESECF),
SECF(SECF_FMC, RCC_AHB6SECSR, RCC_AHB6SECSR_FMCSECF),
SECF(SECF_QSPI, RCC_AHB6SECSR, RCC_AHB6SECSR_QSPISECF),
SECF(SECF_SDMMC1, RCC_AHB6SECSR, RCC_AHB6SECSR_SDMMC1SECF),
SECF(SECF_SDMMC2, RCC_AHB6SECSR, RCC_AHB6SECSR_SDMMC2SECF),
SECF(SECF_ETH1CK, RCC_AHB6SECSR, RCC_AHB6SECSR_ETH1CKSECF),
SECF(SECF_ETH1TX, RCC_AHB6SECSR, RCC_AHB6SECSR_ETH1TXSECF),
SECF(SECF_ETH1RX, RCC_AHB6SECSR, RCC_AHB6SECSR_ETH1RXSECF),
SECF(SECF_ETH1MAC, RCC_AHB6SECSR, RCC_AHB6SECSR_ETH1MACSECF),
SECF(SECF_ETH1STP, RCC_AHB6SECSR, RCC_AHB6SECSR_ETH1STPSECF),
SECF(SECF_ETH2CK, RCC_AHB6SECSR, RCC_AHB6SECSR_ETH2CKSECF),
SECF(SECF_ETH2TX, RCC_AHB6SECSR, RCC_AHB6SECSR_ETH2TXSECF),
SECF(SECF_ETH2RX, RCC_AHB6SECSR, RCC_AHB6SECSR_ETH2RXSECF),
SECF(SECF_ETH2MAC, RCC_AHB6SECSR, RCC_AHB6SECSR_ETH2MACSECF),
SECF(SECF_ETH2STP, RCC_AHB6SECSR, RCC_AHB6SECSR_ETH2STPSECF),
SECF(SECF_MCO1, RCC_SECCFGR, RCC_SECCFGR_MCO1SECF),
SECF(SECF_MCO2, RCC_SECCFGR, RCC_SECCFGR_MCO2SECF),
};
#endif
#define PCLK(_id, _name, _parent, _flags, _gate_id, _sec_id) \
STM32_GATE(_id, _name, _parent, _flags, _gate_id, _sec_id)
#define TIMER(_id, _name, _parent, _flags, _gate_id, _sec_id) \
STM32_GATE(_id, _name, _parent, ((_flags) | CLK_SET_RATE_PARENT), \
_gate_id, _sec_id)
#define KCLK(_id, _name, _flags, _gate_id, _mux_id, _sec_id) \
STM32_COMPOSITE(_id, _name, _flags, _sec_id, \
_gate_id, _mux_id, NO_STM32_DIV)
static const struct clock_config stm32mp13_clock_cfg[] = {
#ifndef CONFIG_XPL_BUILD
TIMER(TIM2_K, "tim2_k", "timg1_ck", 0, GATE_TIM2, SECF_NONE),
TIMER(TIM3_K, "tim3_k", "timg1_ck", 0, GATE_TIM3, SECF_NONE),
TIMER(TIM4_K, "tim4_k", "timg1_ck", 0, GATE_TIM4, SECF_NONE),
TIMER(TIM5_K, "tim5_k", "timg1_ck", 0, GATE_TIM5, SECF_NONE),
TIMER(TIM6_K, "tim6_k", "timg1_ck", 0, GATE_TIM6, SECF_NONE),
TIMER(TIM7_K, "tim7_k", "timg1_ck", 0, GATE_TIM7, SECF_NONE),
TIMER(TIM1_K, "tim1_k", "timg2_ck", 0, GATE_TIM1, SECF_NONE),
TIMER(TIM8_K, "tim8_k", "timg2_ck", 0, GATE_TIM8, SECF_NONE),
TIMER(TIM12_K, "tim12_k", "timg3_ck", 0, GATE_TIM12, SECF_TIM12),
TIMER(TIM13_K, "tim13_k", "timg3_ck", 0, GATE_TIM13, SECF_TIM13),
TIMER(TIM14_K, "tim14_k", "timg3_ck", 0, GATE_TIM14, SECF_TIM14),
TIMER(TIM15_K, "tim15_k", "timg3_ck", 0, GATE_TIM15, SECF_TIM15),
TIMER(TIM16_K, "tim16_k", "timg3_ck", 0, GATE_TIM16, SECF_TIM16),
TIMER(TIM17_K, "tim17_k", "timg3_ck", 0, GATE_TIM17, SECF_TIM17),
#endif
/* Peripheral clocks */
PCLK(SYSCFG, "syscfg", "pclk3", 0, GATE_SYSCFG, SECF_NONE),
PCLK(VREF, "vref", "pclk3", 0, GATE_VREF, SECF_VREF),
#ifndef CONFIG_XPL_BUILD
PCLK(PMBCTRL, "pmbctrl", "pclk3", 0, GATE_PMBCTRL, SECF_NONE),
PCLK(HDP, "hdp", "pclk3", 0, GATE_HDP, SECF_NONE),
#endif
PCLK(IWDG2, "iwdg2", "pclk4", 0, GATE_IWDG2APB, SECF_NONE),
PCLK(STGENRO, "stgenro", "pclk4", 0, GATE_STGENRO, SECF_STGENRO),
PCLK(TZPC, "tzpc", "pclk5", 0, GATE_TZC, SECF_TZC),
PCLK(IWDG1, "iwdg1", "pclk5", 0, GATE_IWDG1APB, SECF_IWDG1),
PCLK(BSEC, "bsec", "pclk5", 0, GATE_BSEC, SECF_BSEC),
#ifndef CONFIG_XPL_BUILD
PCLK(DMA1, "dma1", "ck_mlahb", 0, GATE_DMA1, SECF_NONE),
PCLK(DMA2, "dma2", "ck_mlahb", 0, GATE_DMA2, SECF_NONE),
PCLK(DMAMUX1, "dmamux1", "ck_mlahb", 0, GATE_DMAMUX1, SECF_NONE),
PCLK(DMAMUX2, "dmamux2", "ck_mlahb", 0, GATE_DMAMUX2, SECF_DMAMUX2),
PCLK(ADC1, "adc1", "ck_mlahb", 0, GATE_ADC1, SECF_ADC1),
PCLK(ADC2, "adc2", "ck_mlahb", 0, GATE_ADC2, SECF_ADC2),
#endif
PCLK(GPIOA, "gpioa", "pclk4", 0, GATE_GPIOA, SECF_NONE),
PCLK(GPIOB, "gpiob", "pclk4", 0, GATE_GPIOB, SECF_NONE),
PCLK(GPIOC, "gpioc", "pclk4", 0, GATE_GPIOC, SECF_NONE),
PCLK(GPIOD, "gpiod", "pclk4", 0, GATE_GPIOD, SECF_NONE),
PCLK(GPIOE, "gpioe", "pclk4", 0, GATE_GPIOE, SECF_NONE),
PCLK(GPIOF, "gpiof", "pclk4", 0, GATE_GPIOF, SECF_NONE),
PCLK(GPIOG, "gpiog", "pclk4", 0, GATE_GPIOG, SECF_NONE),
PCLK(GPIOH, "gpioh", "pclk4", 0, GATE_GPIOH, SECF_NONE),
PCLK(GPIOI, "gpioi", "pclk4", 0, GATE_GPIOI, SECF_NONE),
PCLK(TSC, "tsc", "pclk4", 0, GATE_TSC, SECF_TZC),
PCLK(PKA, "pka", "ck_axi", 0, GATE_PKA, SECF_PKA),
PCLK(CRYP1, "cryp1", "ck_axi", 0, GATE_CRYP1, SECF_CRYP1),
PCLK(HASH1, "hash1", "ck_axi", 0, GATE_HASH1, SECF_HASH1),
PCLK(BKPSRAM, "bkpsram", "ck_axi", 0, GATE_BKPSRAM, SECF_BKPSRAM),
PCLK(MDMA, "mdma", "ck_axi", 0, GATE_MDMA, SECF_NONE),
#ifndef CONFIG_XPL_BUILD
PCLK(ETH1TX, "eth1tx", "ck_axi", 0, GATE_ETH1TX, SECF_ETH1TX),
PCLK(ETH1RX, "eth1rx", "ck_axi", 0, GATE_ETH1RX, SECF_ETH1RX),
PCLK(ETH1MAC, "eth1mac", "ck_axi", 0, GATE_ETH1MAC, SECF_ETH1MAC),
PCLK(ETH2TX, "eth2tx", "ck_axi", 0, GATE_ETH2TX, SECF_ETH2TX),
PCLK(ETH2RX, "eth2rx", "ck_axi", 0, GATE_ETH2RX, SECF_ETH2RX),
PCLK(ETH2MAC, "eth2mac", "ck_axi", 0, GATE_ETH2MAC, SECF_ETH2MAC),
#endif
PCLK(CRC1, "crc1", "ck_axi", 0, GATE_CRC1, SECF_NONE),
#ifndef CONFIG_XPL_BUILD
PCLK(USBH, "usbh", "ck_axi", 0, GATE_USBH, SECF_NONE),
#endif
PCLK(DDRPERFM, "ddrperfm", "pclk4", 0, GATE_DDRPERFM, SECF_NONE),
#ifndef CONFIG_XPL_BUILD
PCLK(ETH1STP, "eth1stp", "ck_axi", 0, GATE_ETH1STP, SECF_ETH1STP),
PCLK(ETH2STP, "eth2stp", "ck_axi", 0, GATE_ETH2STP, SECF_ETH2STP),
#endif
/* Kernel clocks */
KCLK(SDMMC1_K, "sdmmc1_k", 0, GATE_SDMMC1, MUX_SDMMC1, SECF_SDMMC1),
KCLK(SDMMC2_K, "sdmmc2_k", 0, GATE_SDMMC2, MUX_SDMMC2, SECF_SDMMC2),
KCLK(FMC_K, "fmc_k", 0, GATE_FMC, MUX_FMC, SECF_FMC),
KCLK(QSPI_K, "qspi_k", 0, GATE_QSPI, MUX_QSPI, SECF_QSPI),
KCLK(SPI2_K, "spi2_k", 0, GATE_SPI2, MUX_SPI23, SECF_NONE),
KCLK(SPI3_K, "spi3_k", 0, GATE_SPI3, MUX_SPI23, SECF_NONE),
KCLK(I2C1_K, "i2c1_k", 0, GATE_I2C1, MUX_I2C12, SECF_NONE),
KCLK(I2C2_K, "i2c2_k", 0, GATE_I2C2, MUX_I2C12, SECF_NONE),
#ifndef CONFIG_XPL_BUILD
KCLK(LPTIM4_K, "lptim4_k", 0, GATE_LPTIM4, MUX_LPTIM45, SECF_NONE),
KCLK(LPTIM5_K, "lptim5_k", 0, GATE_LPTIM5, MUX_LPTIM45, SECF_NONE),
#endif
KCLK(USART3_K, "usart3_k", 0, GATE_USART3, MUX_UART35, SECF_NONE),
KCLK(UART5_K, "uart5_k", 0, GATE_UART5, MUX_UART35, SECF_NONE),
KCLK(UART7_K, "uart7_k", 0, GATE_UART7, MUX_UART78, SECF_NONE),
KCLK(UART8_K, "uart8_k", 0, GATE_UART8, MUX_UART78, SECF_NONE),
KCLK(RNG1_K, "rng1_k", 0, GATE_RNG1, MUX_RNG1, SECF_RNG1),
KCLK(USBPHY_K, "usbphy_k", 0, GATE_USBPHY, MUX_USBPHY, SECF_USBPHY),
KCLK(STGEN_K, "stgen_k", 0, GATE_STGENC, MUX_STGEN, SECF_STGENC),
#ifndef CONFIG_XPL_BUILD
KCLK(SPDIF_K, "spdif_k", 0, GATE_SPDIF, MUX_SPDIF, SECF_NONE),
#endif
KCLK(SPI1_K, "spi1_k", 0, GATE_SPI1, MUX_SPI1, SECF_NONE),
KCLK(SPI4_K, "spi4_k", 0, GATE_SPI4, MUX_SPI4, SECF_SPI4),
KCLK(SPI5_K, "spi5_k", 0, GATE_SPI5, MUX_SPI5, SECF_SPI5),
#ifdef CONFIG_TFABOOT
KCLK(I2C3_K, "i2c3_k", 0, GATE_I2C3, MUX_I2C3, SECF_I2C3),
#else
KCLK(I2C3_K, "i2c3_k", 0, GATE_I2C3, MUX_I2C3, SECF_NONE),
#endif
KCLK(I2C4_K, "i2c4_k", 0, GATE_I2C4, MUX_I2C4, SECF_I2C4),
KCLK(I2C5_K, "i2c5_k", 0, GATE_I2C5, MUX_I2C5, SECF_I2C5),
#ifndef CONFIG_XPL_BUILD
KCLK(LPTIM1_K, "lptim1_k", 0, GATE_LPTIM1, MUX_LPTIM1, SECF_NONE),
KCLK(LPTIM2_K, "lptim2_k", 0, GATE_LPTIM2, MUX_LPTIM2, SECF_LPTIM2),
KCLK(LPTIM3_K, "lptim3_k", 0, GATE_LPTIM3, MUX_LPTIM3, SECF_LPTIM3),
#endif
KCLK(USART1_K, "usart1_k", 0, GATE_USART1, MUX_UART1, SECF_USART1),
KCLK(USART2_K, "usart2_k", 0, GATE_USART2, MUX_UART2, SECF_USART2),
KCLK(UART4_K, "uart4_k", 0, GATE_UART4, MUX_UART4, SECF_NONE),
KCLK(USART6_K, "uart6_k", 0, GATE_USART6, MUX_UART6, SECF_NONE),
#ifndef CONFIG_XPL_BUILD
KCLK(FDCAN_K, "fdcan_k", 0, GATE_FDCAN, MUX_FDCAN, SECF_NONE),
KCLK(SAI1_K, "sai1_k", 0, GATE_SAI1, MUX_SAI1, SECF_NONE),
KCLK(SAI2_K, "sai2_k", 0, GATE_SAI2, MUX_SAI2, SECF_NONE),
KCLK(ADC1_K, "adc1_k", 0, GATE_ADC1, MUX_ADC1, SECF_ADC1),
KCLK(ADC2_K, "adc2_k", 0, GATE_ADC2, MUX_ADC2, SECF_ADC2),
KCLK(DCMIPP_K, "dcmipp_k", 0, GATE_DCMIPP, MUX_DCMIPP, SECF_DCMIPP),
KCLK(ADFSDM_K, "adfsdm_k", 0, GATE_ADFSDM, MUX_SAI1, SECF_NONE),
#endif
KCLK(USBO_K, "usbo_k", 0, GATE_USBO, MUX_USBO, SECF_USBO),
#ifndef CONFIG_XPL_BUILD
KCLK(ETH1CK_K, "eth1ck_k", 0, GATE_ETH1CK, MUX_ETH1, SECF_ETH1CK),
KCLK(ETH2CK_K, "eth2ck_k", 0, GATE_ETH2CK, MUX_ETH2, SECF_ETH2CK),
KCLK(SAES_K, "saes_k", 0, GATE_SAES, MUX_SAES, SECF_SAES),
STM32_GATE(DFSDM_K, "dfsdm_k", "ck_mlahb", 0, GATE_DFSDM, SECF_NONE),
STM32_GATE(LTDC_PX, "ltdc_px", "pll4_q", CLK_SET_RATE_PARENT,
GATE_LTDC, SECF_NONE),
STM32_GATE(DTS_K, "dts_k", "ck_lse", 0, GATE_DTS, SECF_NONE),
#endif
STM32_COMPOSITE(ETH1PTP_K, "eth1ptp_k", CLK_OPS_PARENT_ENABLE |
CLK_SET_RATE_NO_REPARENT, SECF_ETH1CK,
NO_STM32_GATE, MUX_ETH1, DIV_ETH1PTP),
STM32_COMPOSITE(ETH2PTP_K, "eth2ptp_k", CLK_OPS_PARENT_ENABLE |
CLK_SET_RATE_NO_REPARENT, SECF_ETH2CK,
NO_STM32_GATE, MUX_ETH2, DIV_ETH2PTP),
/* MCO clocks */
STM32_COMPOSITE(CK_MCO1, "ck_mco1", CLK_OPS_PARENT_ENABLE |
CLK_SET_RATE_NO_REPARENT, SECF_MCO1,
GATE_MCO1, MUX_MCO1, DIV_MCO1),
STM32_COMPOSITE(CK_MCO2, "ck_mco2", CLK_OPS_PARENT_ENABLE |
CLK_SET_RATE_NO_REPARENT, SECF_MCO2,
GATE_MCO2, MUX_MCO2, DIV_MCO2),
/* Debug clocks */
STM32_GATE(CK_DBG, "ck_sys_dbg", "ck_axi", CLK_IGNORE_UNUSED,
GATE_DBGCK, SECF_NONE),
STM32_COMPOSITE_NOMUX(CK_TRACE, "ck_trace", "ck_axi",
CLK_OPS_PARENT_ENABLE, SECF_NONE,
GATE_TRACECK, DIV_TRACE),
#ifdef CONFIG_XPL_BUILD
STM32_GATE(AXIDCG, "axidcg", "ck_axi", CLK_IGNORE_UNUSED,
GATE_AXIDCG, SECF_NONE),
STM32_GATE(DDRC1, "ddrc1", "ck_axi", CLK_IGNORE_UNUSED,
GATE_DDRC1, SECF_NONE),
STM32_GATE(DDRPHYC, "ddrphyc", "pll2_r", CLK_IGNORE_UNUSED,
GATE_DDRPHYC, SECF_NONE),
STM32_GATE(DDRCAPB, "ddrcapb", "pclk4", CLK_IGNORE_UNUSED,
GATE_DDRCAPB, SECF_NONE),
STM32_GATE(DDRPHYCAPB, "ddrphycapb", "pclk4", CLK_IGNORE_UNUSED,
GATE_DDRPHYCAPB, SECF_NONE),
#endif
};
#ifdef CONFIG_TFABOOT
static int stm32mp13_check_security(struct udevice *dev, void __iomem *base,
const struct clock_config *cfg)
{
int sec_id = cfg->sec_id;
int secured = 0;
if (sec_id != SECF_NONE) {
const struct clk_stm32_security *secf;
secf = &stm32mp13_security[sec_id];
secured = !!(readl(base + secf->offset) & BIT(secf->bit_idx));
}
return secured;
}
#endif
static const struct stm32_clock_match_data stm32mp13_data = {
.tab_clocks = stm32mp13_clock_cfg,
.num_clocks = ARRAY_SIZE(stm32mp13_clock_cfg),
.clock_data = &(const struct clk_stm32_clock_data) {
.num_gates = ARRAY_SIZE(stm32mp13_gates),
.gates = stm32mp13_gates,
.muxes = stm32mp13_muxes,
.dividers = stm32mp13_dividers,
},
#ifdef CONFIG_TFABOOT
.check_security = stm32mp13_check_security,
#endif
};
#ifndef CONFIG_TFABOOT
enum stm32mp1_parent_id {
/*
* _HSI, _HSE, _CSI, _LSI, _LSE should not be moved
* they are used as index in osc_clk[] as clock reference
*/
_HSI,
_HSE,
_CSI,
_LSI,
_LSE,
_I2S_CKIN,
NB_OSC,
/* other parent source */
_HSI_KER = NB_OSC,
_HSE_KER,
_HSE_KER_DIV2,
_CSI_KER,
_PLL1_P,
_PLL1_Q,
_PLL1_R,
_PLL2_P,
_PLL2_Q,
_PLL2_R,
_PLL3_P,
_PLL3_Q,
_PLL3_R,
_PLL4_P,
_PLL4_Q,
_PLL4_R,
_ACLK,
_PCLK1,
_PCLK2,
_PCLK3,
_PCLK4,
_PCLK5,
_HCLK6,
_HCLK2,
_CK_PER,
_CK_MPU,
_CK_MCU,
_DSI_PHY,
_USB_PHY_48,
_PARENT_NB,
_UNKNOWN_ID = 0xff,
};
#if defined(CONFIG_XPL_BUILD)
#define MAX_HSI_HZ 64000000
/* TIMEOUT */
#define TIMEOUT_200MS 200000
#define TIMEOUT_1S 1000000
/* STGEN registers */
#define STGENC_CNTCR 0x00
#define STGENC_CNTSR 0x04
#define STGENC_CNTCVL 0x08
#define STGENC_CNTCVU 0x0C
#define STGENC_CNTFID0 0x20
#define STGENC_CNTCR_EN BIT(0)
enum stm32mp1_clksrc_id {
CLKSRC_MPU,
CLKSRC_AXI,
CLKSRC_MLAHB,
CLKSRC_PLL12,
CLKSRC_PLL3,
CLKSRC_PLL4,
CLKSRC_RTC,
CLKSRC_MCO1,
CLKSRC_MCO2,
CLKSRC_NB
};
enum stm32mp1_clkdiv_id {
CLKDIV_AXI,
CLKDIV_MLAHB,
CLKDIV_APB1,
CLKDIV_APB2,
CLKDIV_APB3,
CLKDIV_APB4,
CLKDIV_APB5,
CLKDIV_APB6,
CLKDIV_RTC,
CLKDIV_NB
};
enum stm32mp1_pll_id {
_PLL1,
_PLL2,
_PLL3,
_PLL4,
_PLL_NB
};
enum stm32mp1_div_id {
_DIV_P,
_DIV_Q,
_DIV_R,
_DIV_NB,
};
/* define characteristic of PLL according type */
#define DIVM_MIN 1
#define DIVM_MAX 63
#define DIVN_MIN 24
#define DIVP_MIN 0
#define DIVP_MAX 127
#define FRAC_MAX 8192
#define PLL2000_VCO_MIN 992000000
#define PLL2000_VCO_MAX 2000000000
enum stm32mp1_pllcfg {
PLLCFG_M,
PLLCFG_N,
PLLCFG_P,
PLLCFG_Q,
PLLCFG_R,
PLLCFG_O,
PLLCFG_NB
};
enum stm32mp1_pllcsg {
PLLCSG_MOD_PER,
PLLCSG_INC_STEP,
PLLCSG_SSCG_MODE,
PLLCSG_NB
};
enum stm32mp1_plltype {
PLL_800,
PLL_1600,
PLL_2000,
PLL_TYPE_NB
};
struct stm32mp1_pll {
u8 refclk_min;
u8 refclk_max;
u8 divn_max;
};
#define REFCLK_SIZE 4
struct stm32mp1_clk_pll {
enum stm32mp1_plltype plltype;
u16 rckxselr;
u16 pllxcfgr1;
u16 pllxcfgr2;
u16 pllxfracr;
u16 pllxcr;
u16 pllxcsgr;
u8 refclk[REFCLK_SIZE];
};
static const struct stm32mp1_pll stm32mp1_pll[PLL_TYPE_NB] = {
[PLL_800] = {
.refclk_min = 4,
.refclk_max = 16,
.divn_max = 99,
},
[PLL_1600] = {
.refclk_min = 8,
.refclk_max = 16,
.divn_max = 199,
},
[PLL_2000] = {
.refclk_min = 8,
.refclk_max = 16,
.divn_max = 99,
},
};
#define STM32MP1_CLK_PLL(idx, type, off1, off2, off3, off4, off5, off6,\
p1, p2, p3, p4) \
[(idx)] = { \
.plltype = (type), \
.rckxselr = (off1), \
.pllxcfgr1 = (off2), \
.pllxcfgr2 = (off3), \
.pllxfracr = (off4), \
.pllxcr = (off5), \
.pllxcsgr = (off6), \
.refclk[0] = (p1), \
.refclk[1] = (p2), \
.refclk[2] = (p3), \
.refclk[3] = (p4), \
}
static const struct stm32mp1_clk_pll stm32mp1_clk_pll[_PLL_NB] = {
STM32MP1_CLK_PLL(_PLL1, PLL_2000,
RCC_RCK12SELR, RCC_PLL1CFGR1, RCC_PLL1CFGR2,
RCC_PLL1FRACR, RCC_PLL1CR, RCC_PLL1CSGR,
_HSI, _HSE, _UNKNOWN_ID, _UNKNOWN_ID),
STM32MP1_CLK_PLL(_PLL2, PLL_1600,
RCC_RCK12SELR, RCC_PLL2CFGR1, RCC_PLL2CFGR2,
RCC_PLL2FRACR, RCC_PLL2CR, RCC_PLL2CSGR,
_HSI, _HSE, _UNKNOWN_ID, _UNKNOWN_ID),
STM32MP1_CLK_PLL(_PLL3, PLL_800,
RCC_RCK3SELR, RCC_PLL3CFGR1, RCC_PLL3CFGR2,
RCC_PLL3FRACR, RCC_PLL3CR, RCC_PLL3CSGR,
_HSI, _HSE, _CSI, _UNKNOWN_ID),
STM32MP1_CLK_PLL(_PLL4, PLL_800,
RCC_RCK4SELR, RCC_PLL4CFGR1, RCC_PLL4CFGR2,
RCC_PLL4FRACR, RCC_PLL4CR, RCC_PLL4CSGR,
_HSI, _HSE, _CSI, _I2S_CKIN),
};
static ulong stm32mp1_clk_get_fixed(struct stm32mp_rcc_priv *priv, int idx)
{
if (idx >= NB_OSC) {
log_debug("clk id %d not found\n", idx);
return 0;
}
return clk_get_rate(&priv->osc_clk[idx]);
}
bool stm32mp1_supports_opp(u32 opp_id, u32 cpu_type)
{
/* 650 MHz is always supported */
if (opp_id == 1)
return true;
/*
* 1000 MHz is supported on STM32MP13xDxx and STM32MP13xFxx,
* which all have bit 11 i.e. 0x800 set in CPU ID.
*/
if (opp_id == 2)
return !!(cpu_type & BIT(11));
/* Any other OPP is invalid. */
return false;
}
__weak void board_vddcore_init(u32 voltage_mv)
{
}
/*
* gets OPP parameters (frequency in KHz and voltage in mV) from
* an OPP table subnode. Platform HW support capabilities are also checked.
* Returns 0 on success and a negative FDT error code on failure.
*/
static int stm32mp1_get_opp(u32 cpu_type, ofnode subnode,
u32 *freq_khz, u32 *voltage_mv)
{
u32 opp_hw;
u64 read_freq_64;
u32 read_voltage_32;
*freq_khz = 0;
*voltage_mv = 0;
opp_hw = ofnode_read_u32_default(subnode, "opp-supported-hw", 0);
if (opp_hw)
if (!stm32mp1_supports_opp(opp_hw, cpu_type))
return -FDT_ERR_BADVALUE;
read_freq_64 = ofnode_read_u64_default(subnode, "opp-hz", 0) /
1000ULL;
read_voltage_32 = ofnode_read_u32_default(subnode, "opp-microvolt", 0) /
1000U;
if (!read_voltage_32 || !read_freq_64)
return -FDT_ERR_NOTFOUND;
/* Frequency value expressed in KHz must fit on 32 bits */
if (read_freq_64 > U32_MAX)
return -FDT_ERR_BADVALUE;
/* Millivolt value must fit on 16 bits */
if (read_voltage_32 > U16_MAX)
return -FDT_ERR_BADVALUE;
*freq_khz = (u32)read_freq_64;
*voltage_mv = read_voltage_32;
return 0;
}
/*
* parses OPP table in DT and finds the parameters for the
* highest frequency supported by the HW platform.
* Returns 0 on success and a negative FDT error code on failure.
*/
int stm32mp1_get_max_opp_freq(struct stm32mp_rcc_priv *priv, u64 *freq_hz)
{
ofnode node, subnode;
int ret;
u32 freq = 0U, voltage = 0U;
u32 cpu_type = get_cpu_type();
node = ofnode_by_compatible(ofnode_null(), "operating-points-v2");
if (!ofnode_valid(node))
return -FDT_ERR_NOTFOUND;
ofnode_for_each_subnode(subnode, node) {
unsigned int read_freq;
unsigned int read_voltage;
ret = stm32mp1_get_opp(cpu_type, subnode,
&read_freq, &read_voltage);
if (ret)
continue;
if (read_freq > freq) {
freq = read_freq;
voltage = read_voltage;
}
}
if (!freq || !voltage)
return -FDT_ERR_NOTFOUND;
*freq_hz = (u64)1000U * freq;
board_vddcore_init(voltage);
return 0;
}
static int stm32mp1_pll1_opp(struct stm32mp_rcc_priv *priv, int clksrc,
u32 *pllcfg, u32 *fracv)
{
u32 post_divm;
u32 input_freq;
u64 output_freq;
u64 freq;
u64 vco;
u32 divm, divn, divp, frac;
int i, ret;
u32 diff;
u32 best_diff = U32_MAX;
/* PLL1 is 2000 */
const u32 DIVN_MAX = stm32mp1_pll[PLL_2000].divn_max;
const u32 POST_DIVM_MIN = stm32mp1_pll[PLL_2000].refclk_min * 1000000U;
const u32 POST_DIVM_MAX = stm32mp1_pll[PLL_2000].refclk_max * 1000000U;
ret = stm32mp1_get_max_opp_freq(priv, &output_freq);
if (ret) {
log_debug("PLL1 OPP configuration not found (%d).\n", ret);
return ret;
}
switch (clksrc) {
case CLK_PLL12_HSI:
input_freq = stm32mp1_clk_get_fixed(priv, _HSI);
break;
case CLK_PLL12_HSE:
input_freq = stm32mp1_clk_get_fixed(priv, _HSE);
break;
default:
return -EINTR;
}
/* Following parameters have always the same value */
pllcfg[PLLCFG_Q] = 0;
pllcfg[PLLCFG_R] = 0;
pllcfg[PLLCFG_O] = PQR(1, 1, 1);
for (divm = DIVM_MAX; divm >= DIVM_MIN; divm--) {
post_divm = (u32)(input_freq / (divm + 1));
if (post_divm < POST_DIVM_MIN || post_divm > POST_DIVM_MAX)
continue;
for (divp = DIVP_MIN; divp <= DIVP_MAX; divp++) {
freq = output_freq * (divm + 1) * (divp + 1);
divn = (u32)((freq / input_freq) - 1);
if (divn < DIVN_MIN || divn > DIVN_MAX)
continue;
frac = (u32)(((freq * FRAC_MAX) / input_freq) -
((divn + 1) * FRAC_MAX));
/* 2 loops to refine the fractional part */
for (i = 2; i != 0; i--) {
if (frac > FRAC_MAX)
break;
vco = (post_divm * (divn + 1)) +
((post_divm * (u64)frac) /
FRAC_MAX);
if (vco < (PLL2000_VCO_MIN / 2) ||
vco > (PLL2000_VCO_MAX / 2)) {
frac++;
continue;
}
freq = vco / (divp + 1);
if (output_freq < freq)
diff = (u32)(freq - output_freq);
else
diff = (u32)(output_freq - freq);
if (diff < best_diff) {
pllcfg[PLLCFG_M] = divm;
pllcfg[PLLCFG_N] = divn;
pllcfg[PLLCFG_P] = divp;
*fracv = frac;
if (diff == 0) {
return 0;
}
best_diff = diff;
}
frac++;
}
}
}
if (best_diff == U32_MAX)
return -1;
return 0;
}
static void stm32mp1_ls_osc_set(int enable, fdt_addr_t rcc, u32 offset,
u32 mask_on)
{
u32 address = rcc + offset;
if (enable)
setbits_le32(address, mask_on);
else
clrbits_le32(address, mask_on);
}
static void stm32mp1_hs_ocs_set(int enable, fdt_addr_t rcc, u32 mask_on)
{
writel(mask_on, rcc + (enable ? RCC_OCENSETR : RCC_OCENCLRR));
}
static int stm32mp1_osc_wait(int enable, fdt_addr_t rcc, u32 offset,
u32 mask_rdy)
{
u32 mask_test = 0;
u32 address = rcc + offset;
u32 val;
int ret;
if (enable)
mask_test = mask_rdy;
ret = readl_poll_timeout(address, val,
(val & mask_rdy) == mask_test,
TIMEOUT_1S);
if (ret)
log_err("OSC %x @ %x timeout for enable=%d : 0x%x\n",
mask_rdy, address, enable, readl(address));
return ret;
}
static void stm32mp1_lse_enable(fdt_addr_t rcc, int bypass, int digbyp,
u32 lsedrv)
{
u32 value;
if (digbyp)
setbits_le32(rcc + RCC_BDCR, RCC_BDCR_DIGBYP);
if (bypass || digbyp)
setbits_le32(rcc + RCC_BDCR, RCC_BDCR_LSEBYP);
/*
* warning: not recommended to switch directly from "high drive"
* to "medium low drive", and vice-versa.
*/
value = (readl(rcc + RCC_BDCR) & RCC_BDCR_LSEDRV_MASK)
>> RCC_BDCR_LSEDRV_SHIFT;
while (value != lsedrv) {
if (value > lsedrv)
value--;
else
value++;
clrsetbits_le32(rcc + RCC_BDCR,
RCC_BDCR_LSEDRV_MASK,
value << RCC_BDCR_LSEDRV_SHIFT);
}
stm32mp1_ls_osc_set(1, rcc, RCC_BDCR, RCC_BDCR_LSEON);
}
static void stm32mp1_lse_wait(fdt_addr_t rcc)
{
stm32mp1_osc_wait(1, rcc, RCC_BDCR, RCC_BDCR_LSERDY);
}
static void stm32mp1_lsi_set(fdt_addr_t rcc, int enable)
{
stm32mp1_ls_osc_set(enable, rcc, RCC_RDLSICR, RCC_RDLSICR_LSION);
stm32mp1_osc_wait(enable, rcc, RCC_RDLSICR, RCC_RDLSICR_LSIRDY);
}
static void stm32mp1_hse_enable(fdt_addr_t rcc, int bypass, int digbyp, int css)
{
if (digbyp)
writel(RCC_OCENR_DIGBYP, rcc + RCC_OCENSETR);
if (bypass || digbyp)
writel(RCC_OCENR_HSEBYP, rcc + RCC_OCENSETR);
stm32mp1_hs_ocs_set(1, rcc, RCC_OCENR_HSEON);
stm32mp1_osc_wait(1, rcc, RCC_OCRDYR, RCC_OCRDYR_HSERDY);
if (css)
writel(RCC_OCENR_HSECSSON, rcc + RCC_OCENSETR);
}
static void stm32mp1_csi_set(fdt_addr_t rcc, int enable)
{
stm32mp1_hs_ocs_set(enable, rcc, RCC_OCENR_CSION);
stm32mp1_osc_wait(enable, rcc, RCC_OCRDYR, RCC_OCRDYR_CSIRDY);
}
static void stm32mp1_hsi_set(fdt_addr_t rcc, int enable)
{
stm32mp1_hs_ocs_set(enable, rcc, RCC_OCENR_HSION);
stm32mp1_osc_wait(enable, rcc, RCC_OCRDYR, RCC_OCRDYR_HSIRDY);
}
static int stm32mp1_set_hsidiv(fdt_addr_t rcc, u8 hsidiv)
{
u32 address = rcc + RCC_OCRDYR;
u32 val;
int ret;
clrsetbits_le32(rcc + RCC_HSICFGR,
RCC_HSICFGR_HSIDIV_MASK,
RCC_HSICFGR_HSIDIV_MASK & hsidiv);
ret = readl_poll_timeout(address, val,
val & RCC_OCRDYR_HSIDIVRDY,
TIMEOUT_200MS);
if (ret)
log_err("HSIDIV failed @ 0x%x: 0x%x\n",
address, readl(address));
return ret;
}
static int stm32mp1_hsidiv(fdt_addr_t rcc, ulong hsifreq)
{
u8 hsidiv;
u32 hsidivfreq = MAX_HSI_HZ;
for (hsidiv = 0; hsidiv < 4; hsidiv++,
hsidivfreq = hsidivfreq / 2)
if (hsidivfreq == hsifreq)
break;
if (hsidiv == 4) {
log_err("hsi frequency invalid");
return -1;
}
if (hsidiv > 0)
return stm32mp1_set_hsidiv(rcc, hsidiv);
return 0;
}
static void pll_start(struct stm32mp_rcc_priv *priv, int pll_id)
{
clrsetbits_le32((u32)(priv->base) + stm32mp1_clk_pll[pll_id].pllxcr,
RCC_PLLNCR_DIVPEN | RCC_PLLNCR_DIVQEN |
RCC_PLLNCR_DIVREN,
RCC_PLLNCR_PLLON);
}
static int pll_output(struct stm32mp_rcc_priv *priv, int pll_id, int output)
{
u32 pllxcr = (u32)(priv->base) + stm32mp1_clk_pll[pll_id].pllxcr;
u32 val;
int ret;
ret = readl_poll_timeout(pllxcr, val, val & RCC_PLLNCR_PLLRDY,
TIMEOUT_200MS);
if (ret) {
log_err("PLL%d start failed @ 0x%x: 0x%x\n",
pll_id, pllxcr, readl(pllxcr));
return ret;
}
/* start the requested output */
setbits_le32(pllxcr, output << RCC_PLLNCR_DIVEN_SHIFT);
return 0;
}
static int pll_stop(struct stm32mp_rcc_priv *priv, int pll_id)
{
u32 pllxcr = (u32)(priv->base) + stm32mp1_clk_pll[pll_id].pllxcr;
u32 val;
/* stop all output */
clrbits_le32(pllxcr,
RCC_PLLNCR_DIVPEN | RCC_PLLNCR_DIVQEN | RCC_PLLNCR_DIVREN);
/* stop PLL */
clrbits_le32(pllxcr, RCC_PLLNCR_PLLON);
/* wait PLL stopped */
return readl_poll_timeout(pllxcr, val, (val & RCC_PLLNCR_PLLRDY) == 0,
TIMEOUT_200MS);
}
static void pll_config_output(struct stm32mp_rcc_priv *priv,
int pll_id, u32 *pllcfg)
{
fdt_addr_t rcc = (u32)(priv->base);
u32 value;
value = (pllcfg[PLLCFG_P] << RCC_PLLNCFGR2_DIVP_SHIFT)
& RCC_PLLNCFGR2_DIVP_MASK;
value |= (pllcfg[PLLCFG_Q] << RCC_PLLNCFGR2_DIVQ_SHIFT)
& RCC_PLLNCFGR2_DIVQ_MASK;
value |= (pllcfg[PLLCFG_R] << RCC_PLLNCFGR2_DIVR_SHIFT)
& RCC_PLLNCFGR2_DIVR_MASK;
writel(value, rcc + stm32mp1_clk_pll[pll_id].pllxcfgr2);
}
static int pll_config(struct stm32mp_rcc_priv *priv, int pll_id,
u32 *pllcfg, u32 fracv)
{
fdt_addr_t rcc = (u32)(priv->base);
enum stm32mp1_plltype type = stm32mp1_clk_pll[pll_id].plltype;
int src;
ulong refclk;
u8 ifrge = 0;
u32 value;
src = readl((u32)(priv->base) + stm32mp1_clk_pll[pll_id].rckxselr) & RCC_SELR_SRC_MASK;
refclk = stm32mp1_clk_get_fixed(priv, stm32mp1_clk_pll[pll_id].refclk[src]) /
(pllcfg[PLLCFG_M] + 1);
if (refclk < (stm32mp1_pll[type].refclk_min * 1000000) ||
refclk > (stm32mp1_pll[type].refclk_max * 1000000)) {
log_err("invalid refclk = %x\n", (u32)refclk);
return -EINVAL;
}
if (type == PLL_800 && refclk >= 8000000)
ifrge = 1;
value = (pllcfg[PLLCFG_N] << RCC_PLLNCFGR1_DIVN_SHIFT)
& RCC_PLLNCFGR1_DIVN_MASK;
value |= (pllcfg[PLLCFG_M] << RCC_PLLNCFGR1_DIVM_SHIFT)
& RCC_PLLNCFGR1_DIVM_MASK;
value |= (ifrge << RCC_PLLNCFGR1_IFRGE_SHIFT)
& RCC_PLLNCFGR1_IFRGE_MASK;
writel(value, rcc + stm32mp1_clk_pll[pll_id].pllxcfgr1);
/* fractional configuration: load sigma-delta modulator (SDM) */
/* Write into FRACV the new fractional value , and FRACLE to 0 */
writel(fracv << RCC_PLLNFRACR_FRACV_SHIFT,
rcc + stm32mp1_clk_pll[pll_id].pllxfracr);
/* Write FRACLE to 1 : FRACV value is loaded into the SDM */
setbits_le32(rcc + stm32mp1_clk_pll[pll_id].pllxfracr,
RCC_PLLNFRACR_FRACLE);
pll_config_output(priv, pll_id, pllcfg);
return 0;
}
static void pll_csg(struct stm32mp_rcc_priv *priv, int pll_id, u32 *csg)
{
u32 pllxcsg;
pllxcsg = ((csg[PLLCSG_MOD_PER] << RCC_PLLNCSGR_MOD_PER_SHIFT) &
RCC_PLLNCSGR_MOD_PER_MASK) |
((csg[PLLCSG_INC_STEP] << RCC_PLLNCSGR_INC_STEP_SHIFT) &
RCC_PLLNCSGR_INC_STEP_MASK) |
((csg[PLLCSG_SSCG_MODE] << RCC_PLLNCSGR_SSCG_MODE_SHIFT) &
RCC_PLLNCSGR_SSCG_MODE_MASK);
writel(pllxcsg, (u32)(priv->base) + stm32mp1_clk_pll[pll_id].pllxcsgr);
setbits_le32((u32)(priv->base) + stm32mp1_clk_pll[pll_id].pllxcr, RCC_PLLNCR_SSCG_CTRL);
}
static ulong pll_get_fref_ck(struct stm32mp_rcc_priv *priv,
int pll_id)
{
u32 selr;
int src;
/* Get current refclk */
selr = readl(priv->base + stm32mp1_clk_pll[pll_id].rckxselr);
src = selr & RCC_SELR_SRC_MASK;
return stm32mp1_clk_get_fixed(priv, stm32mp1_clk_pll[pll_id].refclk[src]);
}
static __maybe_unused int pll_set_rate(struct udevice *dev,
int pll_id,
int div_id,
unsigned long clk_rate)
{
struct stm32mp_rcc_priv *priv = dev_get_priv(dev);
unsigned int pllcfg[PLLCFG_NB];
ofnode plloff;
char name[12];
enum stm32mp1_plltype type = stm32mp1_clk_pll[pll_id].plltype;
int divm, divn, divy;
int ret;
ulong fck_ref;
u32 fracv;
u64 value;
if (div_id > _DIV_NB)
return -EINVAL;
sprintf(name, "st,pll@%d", pll_id);
plloff = dev_read_subnode(dev, name);
if (!ofnode_valid(plloff))
return -FDT_ERR_NOTFOUND;
ret = ofnode_read_u32_array(plloff, "cfg",
pllcfg, PLLCFG_NB);
if (ret < 0)
return -FDT_ERR_NOTFOUND;
fck_ref = pll_get_fref_ck(priv, pll_id);
divm = pllcfg[PLLCFG_M];
/* select output divider = 0: for _DIV_P, 1:_DIV_Q 2:_DIV_R */
divy = pllcfg[PLLCFG_P + div_id];
/* For: PLL1 & PLL2 => VCO is * 2 but ck_pll_y is also / 2
* So same final result than PLL2 et 4
* with FRACV
* Fck_pll_y = Fck_ref * ((DIVN + 1) + FRACV / 2^13)
* / (DIVy + 1) * (DIVM + 1)
* value = (DIVN + 1) * 2^13 + FRACV / 2^13
* = Fck_pll_y (DIVy + 1) * (DIVM + 1) * 2^13 / Fck_ref
*/
value = ((u64)clk_rate * (divy + 1) * (divm + 1)) << 13;
value = lldiv(value, fck_ref);
divn = (value >> 13) - 1;
if (divn < DIVN_MIN ||
divn > stm32mp1_pll[type].divn_max) {
dev_err(dev, "divn invalid = %d", divn);
return -EINVAL;
}
fracv = value - ((divn + 1) << 13);
pllcfg[PLLCFG_N] = divn;
/* reconfigure PLL */
pll_stop(priv, pll_id);
pll_config(priv, pll_id, pllcfg, fracv);
pll_start(priv, pll_id);
pll_output(priv, pll_id, pllcfg[PLLCFG_O]);
return 0;
}
static int set_clksrc(struct stm32mp_rcc_priv *priv, unsigned int clksrc)
{
u32 address = (u32)(priv->base);
u32 mux = (clksrc & MUX_ID_MASK) >> MUX_ID_SHIFT;
u32 val;
int ret;
/* List of relevant muxes to keep the size down */
if (mux == MUX_PLL12)
address += RCC_RCK12SELR;
else if (mux == MUX_PLL3)
address += RCC_RCK3SELR;
else if (mux == MUX_PLL4)
address += RCC_RCK4SELR;
else if (mux == MUX_MPU)
address += RCC_MPCKSELR;
else if (mux == MUX_AXI)
address += RCC_ASSCKSELR;
else if (mux == MUX_MLAHB)
address += RCC_MSSCKSELR;
else if (mux == MUX_CKPER)
address += RCC_CPERCKSELR;
else
return -EINVAL;
clrsetbits_le32(address, RCC_SELR_SRC_MASK, clksrc & RCC_SELR_SRC_MASK);
ret = readl_poll_timeout(address, val, val & RCC_SELR_SRCRDY,
TIMEOUT_200MS);
if (ret)
log_err("CLKSRC %x start failed @ 0x%x: 0x%x\n",
clksrc, address, readl(address));
return ret;
}
static void stgen_config(struct stm32mp_rcc_priv *priv)
{
u32 stgenc, cntfid0;
ulong rate = clk_get_rate(&priv->osc_clk[_HSI]);
stgenc = STM32_STGEN_BASE;
cntfid0 = readl(stgenc + STGENC_CNTFID0);
if (cntfid0 != rate) {
u64 counter;
log_debug("System Generic Counter (STGEN) update\n");
clrbits_le32(stgenc + STGENC_CNTCR, STGENC_CNTCR_EN);
counter = (u64)readl(stgenc + STGENC_CNTCVL);
counter |= ((u64)(readl(stgenc + STGENC_CNTCVU))) << 32;
counter = lldiv(counter * (u64)rate, cntfid0);
writel((u32)counter, stgenc + STGENC_CNTCVL);
writel((u32)(counter >> 32), stgenc + STGENC_CNTCVU);
writel(rate, stgenc + STGENC_CNTFID0);
setbits_le32(stgenc + STGENC_CNTCR, STGENC_CNTCR_EN);
__asm__ volatile("mcr p15, 0, %0, c14, c0, 0" : : "r" (rate));
/* need to update gd->arch.timer_rate_hz with new frequency */
timer_init();
}
}
static int set_clkdiv(unsigned int clkdiv, u32 address)
{
u32 val;
int ret;
clrsetbits_le32(address, RCC_DIVR_DIV_MASK, clkdiv & RCC_DIVR_DIV_MASK);
ret = readl_poll_timeout(address, val, val & RCC_DIVR_DIVRDY,
TIMEOUT_200MS);
if (ret)
log_err("CLKDIV %x start failed @ 0x%x: 0x%x\n",
clkdiv, address, readl(address));
return ret;
}
static void set_rtcsrc(struct stm32mp_rcc_priv *priv,
unsigned int clksrc,
int lse_css)
{
u32 address = (u32)(priv->base) + RCC_BDCR;
if (readl(address) & RCC_BDCR_RTCCKEN)
goto skip_rtc;
if (clksrc == CLK_RTC_DISABLED)
goto skip_rtc;
clrsetbits_le32(address,
RCC_BDCR_RTCSRC_MASK,
clksrc << RCC_BDCR_RTCSRC_SHIFT);
setbits_le32(address, RCC_BDCR_RTCCKEN);
skip_rtc:
if (lse_css)
setbits_le32(address, RCC_BDCR_LSECSSON);
}
static void pkcs_config(struct stm32mp_rcc_priv *priv, u32 pkcs)
{
u32 mux = (pkcs & MUX_ID_MASK) >> MUX_ID_SHIFT;
u32 address = (u32)(priv->base) + stm32mp13_muxes[mux].reg_off;
u32 mask = (BIT(stm32mp13_muxes[mux].width) - 1) << stm32mp13_muxes[mux].shift;
u32 value = (pkcs << stm32mp13_muxes[mux].shift) & mask;
clrsetbits_le32(address, mask, value);
}
static int stm32mp1_clktree(struct udevice *dev)
{
struct stm32mp_rcc_priv *priv = dev_get_priv(dev);
fdt_addr_t rcc = (u32)(priv->base);
unsigned int clksrc[CLKSRC_NB];
unsigned int clkdiv[CLKDIV_NB];
unsigned int pllcfg[_PLL_NB][PLLCFG_NB];
unsigned int pllfracv[_PLL_NB];
unsigned int pllcsg[_PLL_NB][PLLCSG_NB];
bool pllcfg_valid[_PLL_NB];
bool pllcsg_set[_PLL_NB];
int ret;
int i, len;
int lse_css = 0;
const u32 *pkcs_cell;
/* check mandatory field */
ret = dev_read_u32_array(dev, "st,clksrc", clksrc, CLKSRC_NB);
if (ret < 0) {
dev_dbg(dev, "field st,clksrc invalid: error %d\n", ret);
return -FDT_ERR_NOTFOUND;
}
ret = dev_read_u32_array(dev, "st,clkdiv", clkdiv, CLKDIV_NB);
if (ret < 0) {
dev_dbg(dev, "field st,clkdiv invalid: error %d\n", ret);
return -FDT_ERR_NOTFOUND;
}
/* check mandatory field in each pll */
for (i = 0; i < _PLL_NB; i++) {
char name[12];
ofnode node;
sprintf(name, "st,pll@%d", i);
node = dev_read_subnode(dev, name);
pllcfg_valid[i] = ofnode_valid(node);
pllcsg_set[i] = false;
if (pllcfg_valid[i]) {
dev_dbg(dev, "DT for PLL %d @ %s\n", i, name);
ret = ofnode_read_u32_array(node, "cfg",
pllcfg[i], PLLCFG_NB);
if (ret < 0) {
dev_dbg(dev, "field cfg invalid: error %d\n", ret);
return -FDT_ERR_NOTFOUND;
}
pllfracv[i] = ofnode_read_u32_default(node, "frac", 0);
ret = ofnode_read_u32_array(node, "csg", pllcsg[i],
PLLCSG_NB);
if (!ret) {
pllcsg_set[i] = true;
} else if (ret != -FDT_ERR_NOTFOUND) {
dev_dbg(dev, "invalid csg node for pll@%d res=%d\n",
i, ret);
return ret;
}
} else if (i == _PLL1) {
/* use OPP for PLL1 for A7 CPU */
dev_dbg(dev, "DT for PLL %d with OPP\n", i);
ret = stm32mp1_pll1_opp(priv,
clksrc[CLKSRC_PLL12],
pllcfg[i],
&pllfracv[i]);
if (ret) {
dev_dbg(dev, "PLL %d with OPP error = %d\n", i, ret);
return ret;
}
pllcfg_valid[i] = true;
}
}
dev_dbg(dev, "switch ON osillator\n");
/*
* switch ON oscillator found in device-tree,
* HSI already ON after bootrom
*/
if (clk_valid(&priv->osc_clk[_LSI]))
stm32mp1_lsi_set(rcc, 1);
if (clk_valid(&priv->osc_clk[_LSE])) {
int bypass, digbyp;
u32 lsedrv;
struct udevice *dev = priv->osc_clk[_LSE].dev;
bypass = dev_read_bool(dev, "st,bypass");
digbyp = dev_read_bool(dev, "st,digbypass");
lse_css = dev_read_bool(dev, "st,css");
lsedrv = dev_read_u32_default(dev, "st,drive",
LSEDRV_MEDIUM_HIGH);
stm32mp1_lse_enable(rcc, bypass, digbyp, lsedrv);
}
if (clk_valid(&priv->osc_clk[_HSE])) {
int bypass, digbyp, css;
struct udevice *dev = priv->osc_clk[_HSE].dev;
bypass = dev_read_bool(dev, "st,bypass");
digbyp = dev_read_bool(dev, "st,digbypass");
css = dev_read_bool(dev, "st,css");
stm32mp1_hse_enable(rcc, bypass, digbyp, css);
}
/* CSI is mandatory for automatic I/O compensation (SYSCFG_CMPCR)
* => switch on CSI even if node is not present in device tree
*/
stm32mp1_csi_set(rcc, 1);
/* come back to HSI */
dev_dbg(dev, "come back to HSI\n");
set_clksrc(priv, CLK_MPU_HSI);
set_clksrc(priv, CLK_AXI_HSI);
set_clksrc(priv, CLK_MLAHBS_HSI);
dev_dbg(dev, "pll stop\n");
for (i = 0; i < _PLL_NB; i++)
pll_stop(priv, i);
/* configure HSIDIV */
dev_dbg(dev, "configure HSIDIV\n");
if (clk_valid(&priv->osc_clk[_HSI])) {
stm32mp1_hsidiv(rcc, clk_get_rate(&priv->osc_clk[_HSI]));
stgen_config(priv);
}
/* select DIV */
dev_dbg(dev, "select DIV\n");
/* no ready bit when MPUSRC != CLK_MPU_PLL1P_DIV, MPUDIV is disabled */
set_clkdiv(clkdiv[CLKDIV_AXI], rcc + RCC_AXIDIVR);
set_clkdiv(clkdiv[CLKDIV_APB4], rcc + RCC_APB4DIVR);
set_clkdiv(clkdiv[CLKDIV_APB5], rcc + RCC_APB5DIVR);
set_clkdiv(clkdiv[CLKDIV_APB6], rcc + RCC_APB6DIVR);
set_clkdiv(clkdiv[CLKDIV_APB1], rcc + RCC_APB1DIVR);
set_clkdiv(clkdiv[CLKDIV_APB2], rcc + RCC_APB2DIVR);
set_clkdiv(clkdiv[CLKDIV_APB3], rcc + RCC_APB3DIVR);
/* no ready bit for RTC */
writel(clkdiv[CLKDIV_RTC] & RCC_DIVR_DIV_MASK, rcc + RCC_RTCDIVR);
/* configure PLLs source */
dev_dbg(dev, "configure PLLs source\n");
set_clksrc(priv, clksrc[CLKSRC_PLL12]);
set_clksrc(priv, clksrc[CLKSRC_PLL3]);
set_clksrc(priv, clksrc[CLKSRC_PLL4]);
/* configure and start PLLs */
dev_dbg(dev, "configure PLLs\n");
for (i = 0; i < _PLL_NB; i++) {
if (!pllcfg_valid[i])
continue;
dev_dbg(dev, "configure PLL %d\n", i);
pll_config(priv, i, pllcfg[i], pllfracv[i]);
if (pllcsg_set[i])
pll_csg(priv, i, pllcsg[i]);
pll_start(priv, i);
}
/* wait and start PLLs ouptut when ready */
for (i = 0; i < _PLL_NB; i++) {
if (!pllcfg_valid[i])
continue;
dev_dbg(dev, "output PLL %d\n", i);
pll_output(priv, i, pllcfg[i][PLLCFG_O]);
}
/* wait LSE ready before to use it */
if (clk_valid(&priv->osc_clk[_LSE]))
stm32mp1_lse_wait(rcc);
/* configure with expected clock source */
dev_dbg(dev, "CLKSRC\n");
set_clksrc(priv, clksrc[CLKSRC_MPU]);
set_clksrc(priv, clksrc[CLKSRC_AXI]);
set_clksrc(priv, clksrc[CLKSRC_MLAHB]);
set_rtcsrc(priv, clksrc[CLKSRC_RTC], lse_css);
/* configure PKCK */
dev_dbg(dev, "PKCK\n");
pkcs_cell = dev_read_prop(dev, "st,pkcs", &len);
if (pkcs_cell) {
bool ckper_disabled = false;
for (i = 0; i < len / sizeof(u32); i++) {
u32 pkcs = (u32)fdt32_to_cpu(pkcs_cell[i]);
if (pkcs == CLK_CKPER_DISABLED) {
ckper_disabled = true;
continue;
}
pkcs_config(priv, pkcs);
}
/* CKPER is source for some peripheral clock
* (FMC-NAND / QPSI-NOR) and switching source is allowed
* only if previous clock is still ON
* => deactivated CKPER only after switching clock
*/
if (ckper_disabled)
pkcs_config(priv, CLK_CKPER_DISABLED);
}
/* STGEN clock source can change with CLK_STGEN_XXX */
stgen_config(priv);
dev_dbg(dev, "oscillator off\n");
/* switch OFF HSI if not found in device-tree */
if (!clk_valid(&priv->osc_clk[_HSI]))
stm32mp1_hsi_set(rcc, 0);
/* Software Self-Refresh mode (SSR) during DDR initilialization */
clrsetbits_le32((u32)(priv->base) + RCC_DDRITFCR,
RCC_DDRITFCR_DDRCKMOD_MASK,
RCC_DDRITFCR_DDRCKMOD_SSR <<
RCC_DDRITFCR_DDRCKMOD_SHIFT);
return 0;
}
#endif
static int stm32mp1_osc_init(struct udevice *dev)
{
struct stm32mp_rcc_priv *priv = dev_get_priv(dev);
fdt_addr_t base = dev_read_addr(dev->parent);
struct clk *ck;
int i;
const char *name[NB_OSC] = {
[_LSI] = "lsi",
[_LSE] = "lse",
[_HSI] = "hsi",
[_HSE] = "hse",
[_CSI] = "csi",
[_I2S_CKIN] = "i2s_ckin",
};
const struct {
const char *name;
const int rate;
} fixed_clk[] = {
{ "bsec", 66625000 },
{ "ck_axi", 266500000 },
{ "ck_mlahb", 200000000 },
{ "ck_mpu", 1000000000 },
{ "ck_per", 24000000 },
{ "ck_rtc", 32768 },
{ "clk-hse-div2", 12000000 },
{ "pclk1", 100000000 },
{ "pclk2", 100000000 },
{ "pclk3", 100000000 },
{ "pclk4", 133250000 },
{ "pclk5", 66625000 },
{ "pclk6", 100000000 },
{ "pll2_q", 266500000 },
{ "pll2_r", 533000000 },
{ "pll3_p", 200000000 },
{ "pll3_q", 150000000 },
{ "pll3_r", 200000000 },
{ "pll4_p", 125000000 },
{ "pll4_q", 83333333 },
{ "pll4_r", 75000000 },
{ "rtcapb", 66625000 },
{ "timg1_ck", 200000000 },
{ "timg2_ck", 200000000 },
{ "timg3_ck", 200000000 },
};
if (base == FDT_ADDR_T_NONE)
return -EINVAL;
priv->base = (void __iomem *)base;
for (i = 0; i < NB_OSC; i++) {
if (clk_get_by_name(dev, name[i], &priv->osc_clk[i]))
dev_dbg(dev, "No source clock \"%s\"\n", name[i]);
else
dev_dbg(dev, "%s clock rate: %luHz\n",
name[i], clk_get_rate(&priv->osc_clk[i]));
}
for (i = 0; i < ARRAY_SIZE(fixed_clk); i++) {
ck = clk_register_fixed_rate(NULL, fixed_clk[i].name, fixed_clk[i].rate);
if (!ck)
dev_dbg(dev, "Cannot register fixed clock \"%s\"\n", fixed_clk[i].name);
}
return 0;
}
#endif
static int stm32mp1_clk_probe(struct udevice *dev)
{
int err;
#ifdef CONFIG_TFABOOT
struct udevice *scmi;
/* force SCMI probe to register all SCMI clocks */
uclass_get_device_by_driver(UCLASS_CLK, DM_DRIVER_GET(scmi_clock), &scmi);
#else
err = stm32mp1_osc_init(dev);
if (err)
return err;
#if defined(CONFIG_XPL_BUILD)
/* clock tree init is done only one time, before relocation */
if (!(gd->flags & GD_FLG_RELOC))
err = stm32mp1_clktree(dev);
if (err)
dev_err(dev, "clock tree initialization failed (%d)\n", err);
#endif
#endif
err = stm32_rcc_init(dev, &stm32mp13_data);
if (err)
return err;
gd->cpu_clk = clk_stm32_get_rate_by_name("ck_mpu");
gd->bus_clk = clk_stm32_get_rate_by_name("ck_axi");
/* DDRPHYC father */
gd->mem_clk = clk_stm32_get_rate_by_name("pll2_r");
#ifndef CONFIG_XPL_BUILD
if (IS_ENABLED(CONFIG_DISPLAY_CPUINFO)) {
if (gd->flags & GD_FLG_RELOC) {
char buf[32];
log_info("Clocks:\n");
log_info("- MPU : %s MHz\n", strmhz(buf, gd->cpu_clk));
log_info("- AXI : %s MHz\n", strmhz(buf, gd->bus_clk));
log_info("- PER : %s MHz\n",
strmhz(buf, clk_stm32_get_rate_by_name("ck_per")));
log_info("- DDR : %s MHz\n", strmhz(buf, gd->mem_clk));
}
}
#endif
return 0;
}
U_BOOT_DRIVER(stm32mp1_clock) = {
.name = "stm32mp13_clk",
.id = UCLASS_CLK,
.ops = &stm32_clk_ops,
.priv_auto = sizeof(struct stm32mp_rcc_priv),
.probe = stm32mp1_clk_probe,
};
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