From b52fb0b0b5da80a059ba982139401e57ac4e9a2e Mon Sep 17 00:00:00 2001
From: Marek Vasut <marek.vasut@gmail.com>
Date: Wed, 29 Apr 2020 20:09:08 +0200
Subject: ARM: imx: pico-imx8mq: Add support for Technexion Pico-iMX8MQ

Add initial support for Technexion Pico-iMX8MQ SoM on PicoPI carrier
board. Currently working is ethernet, serial, eMMC. DT is imported
from Linux 5.4.28 ("462afcd6e7ea") .

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: "NXP i.MX U-Boot Team" <uboot-imx@nxp.com>
Cc: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Stefano Babic <sbabic@denx.de>
---
 board/technexion/pico-imx8mq/pico-imx8mq.c | 146 +++++++++++++++++++++++++++++
 1 file changed, 146 insertions(+)
 create mode 100644 board/technexion/pico-imx8mq/pico-imx8mq.c

(limited to 'board/technexion/pico-imx8mq/pico-imx8mq.c')

diff --git a/board/technexion/pico-imx8mq/pico-imx8mq.c b/board/technexion/pico-imx8mq/pico-imx8mq.c
new file mode 100644
index 00000000000..822357bb12c
--- /dev/null
+++ b/board/technexion/pico-imx8mq/pico-imx8mq.c
@@ -0,0 +1,146 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2018 NXP
+ */
+
+#include <common.h>
+#include <env.h>
+#include <init.h>
+#include <malloc.h>
+#include <errno.h>
+#include <asm/io.h>
+#include <miiphy.h>
+#include <netdev.h>
+#include <asm/mach-imx/iomux-v3.h>
+#include <asm-generic/gpio.h>
+#include <fsl_esdhc_imx.h>
+#include <mmc.h>
+#include <asm/arch/imx8mq_pins.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/mach-imx/gpio.h>
+#include <asm/mach-imx/mxc_i2c.h>
+#include <asm/arch/clock.h>
+#include <spl.h>
+#include <power/pmic.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define UART_PAD_CTRL	(PAD_CTL_DSE6 | PAD_CTL_FSEL1)
+
+#define WDOG_PAD_CTRL	(PAD_CTL_DSE6 | PAD_CTL_HYS | PAD_CTL_PUE)
+
+static iomux_v3_cfg_t const wdog_pads[] = {
+	IMX8MQ_PAD_GPIO1_IO02__WDOG1_WDOG_B | MUX_PAD_CTRL(WDOG_PAD_CTRL),
+};
+
+static iomux_v3_cfg_t const uart_pads[] = {
+	IMX8MQ_PAD_UART1_RXD__UART1_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
+	IMX8MQ_PAD_UART1_TXD__UART1_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
+};
+
+int board_early_init_f(void)
+{
+	struct wdog_regs *wdog = (struct wdog_regs *)WDOG1_BASE_ADDR;
+
+	imx_iomux_v3_setup_multiple_pads(wdog_pads, ARRAY_SIZE(wdog_pads));
+	set_wdog_reset(wdog);
+
+	imx_iomux_v3_setup_multiple_pads(uart_pads, ARRAY_SIZE(uart_pads));
+
+	return 0;
+}
+
+int dram_init(void)
+{
+	int ddr_size = readl(M4_BOOTROM_BASE_ADDR);
+
+	if (ddr_size == 0x4)
+		gd->ram_size = 0x100000000;
+	else if (ddr_size == 0x3)
+		gd->ram_size = 0xc0000000;
+	else if (ddr_size == 0x2)
+		gd->ram_size = 0x80000000;
+	else if (ddr_size == 0x1)
+		gd->ram_size = 0x40000000;
+	else
+		printf("Unknown DDR type!!!\n");
+
+	/* rom_pointer[1] contains the size of TEE occupies */
+	if (rom_pointer[1])
+		gd->ram_size -= rom_pointer[1];
+
+	return 0;
+}
+
+#ifdef CONFIG_FEC_MXC
+#define FEC_RST_PAD IMX_GPIO_NR(1, 9)
+#define FEC_PWR_PAD IMX_GPIO_NR(1, 0)
+static iomux_v3_cfg_t const fec1_pads[] = {
+	/* Reset */
+	IMX8MQ_PAD_GPIO1_IO09__GPIO1_IO9 | MUX_PAD_CTRL(NO_PAD_CTRL),
+	/* Power */
+	IMX8MQ_PAD_GPIO1_IO00__GPIO1_IO0 | MUX_PAD_CTRL(NO_PAD_CTRL),
+};
+
+static void setup_iomux_fec(void)
+{
+	imx_iomux_v3_setup_multiple_pads(fec1_pads, ARRAY_SIZE(fec1_pads));
+
+	gpio_request(IMX_GPIO_NR(1, 0), "fec1_pwr");
+	gpio_direction_output(IMX_GPIO_NR(1, 0), 1);
+	udelay(500);
+
+	gpio_request(IMX_GPIO_NR(1, 9), "fec1_rst");
+	gpio_direction_output(IMX_GPIO_NR(1, 9), 0);
+	udelay(500);
+	gpio_direction_output(IMX_GPIO_NR(1, 9), 1);
+}
+
+static int setup_fec(void)
+{
+	struct iomuxc_gpr_base_regs *gpr =
+		(struct iomuxc_gpr_base_regs *)IOMUXC_GPR_BASE_ADDR;
+
+	setup_iomux_fec();
+
+	/* Use 125M anatop REF_CLK1 for ENET1, not from external */
+	clrsetbits_le32(&gpr->gpr[1], BIT(13) | BIT(17), 0);
+	return set_clk_enet(ENET_125MHZ);
+}
+
+int board_phy_config(struct phy_device *phydev)
+{
+	/* enable rgmii rxc skew and phy mode select to RGMII copper */
+	phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x1f);
+	phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x8);
+
+	phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x05);
+	phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x100);
+
+	if (phydev->drv->config)
+		phydev->drv->config(phydev);
+	return 0;
+}
+#endif
+
+int board_init(void)
+{
+#ifdef CONFIG_FEC_MXC
+	setup_fec();
+#endif
+
+	return 0;
+}
+
+int board_mmc_get_env_dev(int devno)
+{
+	return devno;
+}
+
+int board_late_init(void)
+{
+#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
+	env_set("board_rev", "iMX8MQ");
+#endif
+	return 0;
+}
-- 
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