imx: add i.MX8QXP MEK board support

Add i.MX8QXP MEK board support
Enabled pinctrl/clk/power-domain/mmc/i2c/fec driver.
Added README file.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>

1 files changed, 170 insertions, 0 deletions

diff --git a/board/freescale/imx8qxp_mek/imx8qxp_mek.c b/board/freescale/imx8qxp_mek/imx8qxp_mek.c
new file mode 100644
index 0000000000..a4c587a390
--- /dev/null
+++ b/board/freescale/imx8qxp_mek/imx8qxp_mek.c
@@ -0,0 +1,170 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2018 NXP
+ */
+
+#include <common.h>
+#include <errno.h>
+#include <linux/libfdt.h>
+#include <environment.h>
+#include <fsl_esdhc.h>
+#include <asm/io.h>
+#include <asm/gpio.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/sci/sci.h>
+#include <asm/arch/imx8-pins.h>
+#include <asm/arch/iomux.h>
+#include <asm/arch/sys_proto.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define GPIO_PAD_CTRL	((SC_PAD_CONFIG_NORMAL << PADRING_CONFIG_SHIFT) | \
+			 (SC_PAD_ISO_OFF << PADRING_LPCONFIG_SHIFT) | \
+			 (SC_PAD_28FDSOI_DSE_DV_HIGH << PADRING_DSE_SHIFT) | \
+			 (SC_PAD_28FDSOI_PS_PU << PADRING_PULL_SHIFT))
+
+#define UART_PAD_CTRL	((SC_PAD_CONFIG_OUT_IN << PADRING_CONFIG_SHIFT) | \
+			 (SC_PAD_ISO_OFF << PADRING_LPCONFIG_SHIFT) | \
+			 (SC_PAD_28FDSOI_DSE_DV_HIGH << PADRING_DSE_SHIFT) | \
+			 (SC_PAD_28FDSOI_PS_PU << PADRING_PULL_SHIFT))
+
+static iomux_cfg_t uart0_pads[] = {
+	SC_P_UART0_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
+	SC_P_UART0_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
+};
+
+static void setup_iomux_uart(void)
+{
+	imx8_iomux_setup_multiple_pads(uart0_pads, ARRAY_SIZE(uart0_pads));
+}
+
+int board_early_init_f(void)
+{
+	int ret;
+	/* Set UART0 clock root to 80 MHz */
+	sc_pm_clock_rate_t rate = 80000000;
+
+	/* Power up UART0 */
+	ret = sc_pm_set_resource_power_mode(-1, SC_R_UART_0, SC_PM_PW_MODE_ON);
+	if (ret)
+		return ret;
+
+	ret = sc_pm_set_clock_rate(-1, SC_R_UART_0, 2, &rate);
+	if (ret)
+		return ret;
+
+	/* Enable UART0 clock root */
+	ret = sc_pm_clock_enable(-1, SC_R_UART_0, 2, true, false);
+	if (ret)
+		return ret;
+
+	setup_iomux_uart();
+
+	return 0;
+}
+
+#if IS_ENABLED(CONFIG_DM_GPIO)
+static void board_gpio_init(void)
+{
+	struct gpio_desc desc;
+	int ret;
+
+	ret = dm_gpio_lookup_name("gpio@1a_3", &desc);
+	if (ret)
+		return;
+
+	ret = dm_gpio_request(&desc, "bb_per_rst_b");
+	if (ret)
+		return;
+
+	dm_gpio_set_dir_flags(&desc, GPIOD_IS_OUT);
+	dm_gpio_set_value(&desc, 0);
+	udelay(50);
+	dm_gpio_set_value(&desc, 1);
+}
+#else
+static inline void board_gpio_init(void) {}
+#endif
+
+#if IS_ENABLED(CONFIG_FEC_MXC)
+#include <miiphy.h>
+
+int board_phy_config(struct phy_device *phydev)
+{
+	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
+
+void build_info(void)
+{
+	u32 sc_build = 0, sc_commit = 0;
+
+	/* Get SCFW build and commit id */
+	sc_misc_build_info(-1, &sc_build, &sc_commit);
+	if (!sc_build) {
+		printf("SCFW does not support build info\n");
+		sc_commit = 0; /* Display 0 when the build info is not supported*/
+	}
+	printf("Build: SCFW %x\n", sc_commit);
+}
+
+int checkboard(void)
+{
+	puts("Board: iMX8QXP MEK\n");
+
+	build_info();
+	print_bootinfo();
+
+	return 0;
+}
+
+int board_init(void)
+{
+	board_gpio_init();
+
+	return 0;
+}
+
+void detail_board_ddr_info(void)
+{
+	puts("\nDDR    ");
+}
+
+/*
+ * Board specific reset that is system reset.
+ */
+void reset_cpu(ulong addr)
+{
+	/* TODO */
+}
+
+#ifdef CONFIG_OF_BOARD_SETUP
+int ft_board_setup(void *blob, bd_t *bd)
+{
+	return 0;
+}
+#endif
+
+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_name", "MEK");
+	env_set("board_rev", "iMX8QXP");
+#endif
+
+	return 0;
+}