// SPDX-License-Identifier: BSD-3-Clause /* * Clock drivers for Qualcomm QCS404 * * (C) Copyright 2022 Sumit Garg */ #include #include #include #include #include #include #include #include "clock-qcom.h" /* Clocks: (from CLK_CTL_BASE) */ #define GPLL0_STATUS (0x21000) #define GPLL1_STATUS (0x20000) #define APCS_GPLL_ENA_VOTE (0x45000) #define APCS_CLOCK_BRANCH_ENA_VOTE (0x45004) /* BLSP1 AHB clock (root clock for BLSP) */ #define BLSP1_AHB_CBCR 0x1008 /* Uart clock control registers */ #define BLSP1_UART2_BCR (0x3028) #define BLSP1_UART2_APPS_CBCR (0x302C) #define BLSP1_UART2_APPS_CMD_RCGR (0x3034) /* I2C controller clock control registerss */ #define BLSP1_QUP0_I2C_APPS_CBCR (0x6028) #define BLSP1_QUP0_I2C_APPS_CMD_RCGR (0x602C) #define BLSP1_QUP1_I2C_APPS_CBCR (0x2008) #define BLSP1_QUP1_I2C_APPS_CMD_RCGR (0x200C) #define BLSP1_QUP2_I2C_APPS_CBCR (0x3010) #define BLSP1_QUP2_I2C_APPS_CMD_RCGR (0x3000) #define BLSP1_QUP3_I2C_APPS_CBCR (0x4020) #define BLSP1_QUP3_I2C_APPS_CMD_RCGR (0x4000) #define BLSP1_QUP4_I2C_APPS_CBCR (0x5020) #define BLSP1_QUP4_I2C_APPS_CMD_RCGR (0x5000) /* SD controller clock control registers */ #define SDCC_BCR(n) (((n) * 0x1000) + 0x41000) #define SDCC_CMD_RCGR(n) (((n + 1) * 0x1000) + 0x41004) #define SDCC_APPS_CBCR(n) (((n) * 0x1000) + 0x41018) #define SDCC_AHB_CBCR(n) (((n) * 0x1000) + 0x4101C) /* USB-3.0 controller clock control registers */ #define SYS_NOC_USB3_CBCR (0x26014) #define USB30_BCR (0x39000) #define USB3PHY_BCR (0x39008) #define USB30_MASTER_CBCR (0x3900C) #define USB30_SLEEP_CBCR (0x39010) #define USB30_MOCK_UTMI_CBCR (0x39014) #define USB30_MOCK_UTMI_CMD_RCGR (0x3901C) #define USB30_MOCK_UTMI_CFG_RCGR (0x39020) #define USB30_MASTER_CMD_RCGR (0x39028) #define USB2A_PHY_SLEEP_CBCR (0x4102C) #define USB_HS_PHY_CFG_AHB_CBCR (0x41030) /* ETH controller clock control registers */ #define ETH_PTP_CBCR (0x4e004) #define ETH_RGMII_CBCR (0x4e008) #define ETH_SLAVE_AHB_CBCR (0x4e00c) #define ETH_AXI_CBCR (0x4e010) #define EMAC_PTP_CMD_RCGR (0x4e014) #define EMAC_CMD_RCGR (0x4e01c) /* GPLL0 clock control registers */ #define GPLL0_STATUS_ACTIVE BIT(31) #define CFG_CLK_SRC_GPLL1 BIT(8) #define GPLL1_STATUS_ACTIVE BIT(31) static struct vote_clk gcc_blsp1_ahb_clk = { .cbcr_reg = BLSP1_AHB_CBCR, .ena_vote = APCS_CLOCK_BRANCH_ENA_VOTE, .vote_bit = BIT(10) | BIT(5) | BIT(4), }; static struct pll_vote_clk gpll0_vote_clk = { .status = GPLL0_STATUS, .status_bit = GPLL0_STATUS_ACTIVE, .ena_vote = APCS_GPLL_ENA_VOTE, .vote_bit = BIT(0), }; static struct pll_vote_clk gpll1_vote_clk = { .status = GPLL1_STATUS, .status_bit = GPLL1_STATUS_ACTIVE, .ena_vote = APCS_GPLL_ENA_VOTE, .vote_bit = BIT(1), }; static ulong qcs404_clk_set_rate(struct clk *clk, ulong rate) { struct msm_clk_priv *priv = dev_get_priv(clk->dev); switch (clk->id) { case GCC_BLSP1_UART2_APPS_CLK: /* UART: 1843200Hz for a fixed 115200 baudrate (19200000 * (12/125)) */ clk_rcg_set_rate_mnd(priv->base, BLSP1_UART2_APPS_CMD_RCGR, 0, 12, 125, CFG_CLK_SRC_CXO, 16); clk_enable_cbc(priv->base + BLSP1_UART2_APPS_CBCR); return 1843200; case GCC_SDCC1_APPS_CLK: /* SDCC1: 200MHz */ clk_rcg_set_rate_mnd(priv->base, SDCC_CMD_RCGR(0), 7, 0, 0, CFG_CLK_SRC_GPLL0, 8); clk_enable_gpll0(priv->base, &gpll0_vote_clk); clk_enable_cbc(priv->base + SDCC_APPS_CBCR(1)); return rate; case GCC_ETH_RGMII_CLK: if (rate == 250000000) clk_rcg_set_rate_mnd(priv->base, EMAC_CMD_RCGR, 3, 0, 0, CFG_CLK_SRC_GPLL1, 8); else if (rate == 125000000) clk_rcg_set_rate_mnd(priv->base, EMAC_CMD_RCGR, 7, 0, 0, CFG_CLK_SRC_GPLL1, 8); else if (rate == 50000000) clk_rcg_set_rate_mnd(priv->base, EMAC_CMD_RCGR, 19, 0, 0, CFG_CLK_SRC_GPLL1, 8); else if (rate == 5000000) clk_rcg_set_rate_mnd(priv->base, EMAC_CMD_RCGR, 3, 1, 50, CFG_CLK_SRC_GPLL1, 8); return rate; } /* There is a bug only seeming to affect this board where the MMC driver somehow calls * clk_set_rate() on a clock with id 0 which is associated with the qcom_clk device. * The only clock with ID 0 is the xo_board clock which should not be associated with * this device... */ log_debug("Unknown clock id %ld\n", clk->id); return 0; } static int qcs404_clk_enable(struct clk *clk) { struct msm_clk_priv *priv = dev_get_priv(clk->dev); switch (clk->id) { case GCC_USB30_MASTER_CLK: clk_enable_cbc(priv->base + USB30_MASTER_CBCR); clk_rcg_set_rate_mnd(priv->base, USB30_MASTER_CMD_RCGR, 7, 0, 0, CFG_CLK_SRC_GPLL0, 8); break; case GCC_SYS_NOC_USB3_CLK: clk_enable_cbc(priv->base + SYS_NOC_USB3_CBCR); break; case GCC_USB30_SLEEP_CLK: clk_enable_cbc(priv->base + USB30_SLEEP_CBCR); break; case GCC_USB30_MOCK_UTMI_CLK: clk_enable_cbc(priv->base + USB30_MOCK_UTMI_CBCR); break; case GCC_USB_HS_PHY_CFG_AHB_CLK: clk_enable_cbc(priv->base + USB_HS_PHY_CFG_AHB_CBCR); break; case GCC_USB2A_PHY_SLEEP_CLK: clk_enable_cbc(priv->base + USB_HS_PHY_CFG_AHB_CBCR); break; case GCC_ETH_PTP_CLK: /* SPEED_1000: freq -> 250MHz */ clk_enable_cbc(priv->base + ETH_PTP_CBCR); clk_enable_gpll0(priv->base, &gpll1_vote_clk); clk_rcg_set_rate_mnd(priv->base, EMAC_PTP_CMD_RCGR, 3, 0, 0, CFG_CLK_SRC_GPLL1, 8); break; case GCC_ETH_RGMII_CLK: /* SPEED_1000: freq -> 250MHz */ clk_enable_cbc(priv->base + ETH_RGMII_CBCR); clk_enable_gpll0(priv->base, &gpll1_vote_clk); clk_rcg_set_rate_mnd(priv->base, EMAC_CMD_RCGR, 3, 0, 0, CFG_CLK_SRC_GPLL1, 8); break; case GCC_ETH_SLAVE_AHB_CLK: clk_enable_cbc(priv->base + ETH_SLAVE_AHB_CBCR); break; case GCC_ETH_AXI_CLK: clk_enable_cbc(priv->base + ETH_AXI_CBCR); break; case GCC_BLSP1_AHB_CLK: clk_enable_vote_clk(priv->base, &gcc_blsp1_ahb_clk); break; case GCC_BLSP1_QUP0_I2C_APPS_CLK: clk_enable_cbc(priv->base + BLSP1_QUP0_I2C_APPS_CBCR); clk_rcg_set_rate(priv->base, BLSP1_QUP0_I2C_APPS_CMD_RCGR, 0, CFG_CLK_SRC_CXO); break; case GCC_BLSP1_QUP1_I2C_APPS_CLK: clk_enable_cbc(priv->base + BLSP1_QUP1_I2C_APPS_CBCR); clk_rcg_set_rate(priv->base, BLSP1_QUP1_I2C_APPS_CMD_RCGR, 0, CFG_CLK_SRC_CXO); break; case GCC_BLSP1_QUP2_I2C_APPS_CLK: clk_enable_cbc(priv->base + BLSP1_QUP2_I2C_APPS_CBCR); clk_rcg_set_rate(priv->base, BLSP1_QUP2_I2C_APPS_CMD_RCGR, 0, CFG_CLK_SRC_CXO); break; case GCC_BLSP1_QUP3_I2C_APPS_CLK: clk_enable_cbc(priv->base + BLSP1_QUP3_I2C_APPS_CBCR); clk_rcg_set_rate(priv->base, BLSP1_QUP3_I2C_APPS_CMD_RCGR, 0, CFG_CLK_SRC_CXO); break; case GCC_BLSP1_QUP4_I2C_APPS_CLK: clk_enable_cbc(priv->base + BLSP1_QUP4_I2C_APPS_CBCR); clk_rcg_set_rate(priv->base, BLSP1_QUP4_I2C_APPS_CMD_RCGR, 0, CFG_CLK_SRC_CXO); break; case GCC_SDCC1_AHB_CLK: clk_enable_cbc(priv->base + SDCC_AHB_CBCR(1)); break; default: return 0; } return 0; } static const struct qcom_reset_map qcs404_gcc_resets[] = { [GCC_GENI_IR_BCR] = { 0x0F000 }, [GCC_CDSP_RESTART] = { 0x18000 }, [GCC_USB_HS_BCR] = { 0x41000 }, [GCC_USB2_HS_PHY_ONLY_BCR] = { 0x41034 }, [GCC_QUSB2_PHY_BCR] = { 0x4103c }, [GCC_USB_HS_PHY_CFG_AHB_BCR] = { 0x0000c, 1 }, [GCC_USB2A_PHY_BCR] = { 0x0000c, 0 }, [GCC_USB3_PHY_BCR] = { 0x39004 }, [GCC_USB_30_BCR] = { 0x39000 }, [GCC_USB3PHY_PHY_BCR] = { 0x39008 }, [GCC_PCIE_0_BCR] = { 0x3e000 }, [GCC_PCIE_0_PHY_BCR] = { 0x3e004 }, [GCC_PCIE_0_LINK_DOWN_BCR] = { 0x3e038 }, [GCC_PCIEPHY_0_PHY_BCR] = { 0x3e03c }, [GCC_PCIE_0_AXI_MASTER_STICKY_ARES] = { 0x3e040, 6}, [GCC_PCIE_0_AHB_ARES] = { 0x3e040, 5 }, [GCC_PCIE_0_AXI_SLAVE_ARES] = { 0x3e040, 4 }, [GCC_PCIE_0_AXI_MASTER_ARES] = { 0x3e040, 3 }, [GCC_PCIE_0_CORE_STICKY_ARES] = { 0x3e040, 2 }, [GCC_PCIE_0_SLEEP_ARES] = { 0x3e040, 1 }, [GCC_PCIE_0_PIPE_ARES] = { 0x3e040, 0 }, [GCC_EMAC_BCR] = { 0x4e000 }, [GCC_WDSP_RESTART] = {0x19000}, }; static const struct msm_clk_data qcs404_clk_gcc_data = { .resets = qcs404_gcc_resets, .num_resets = ARRAY_SIZE(qcs404_gcc_resets), .enable = qcs404_clk_enable, .set_rate = qcs404_clk_set_rate, }; static const struct udevice_id gcc_qcs404_of_match[] = { { .compatible = "qcom,gcc-qcs404", .data = (ulong)&qcs404_clk_gcc_data }, { } }; U_BOOT_DRIVER(gcc_qcs404) = { .name = "gcc_qcs404", .id = UCLASS_NOP, .of_match = gcc_qcs404_of_match, .bind = qcom_cc_bind, .flags = DM_FLAG_PRE_RELOC, };