ARM:imx:imx8mq-cm: Add support for Ronetix iMX8MQ-CM
Supported peripherals: Ethernet, eMMC, Serial.
U-Boot SPL 2021.04-00911-g5fa1e2ffeb-dirty (Apr 23 2021 - 09:11:14
+0200)
Normal Boot
Trying to boot from MMC2
U-Boot 2021.04-00911-g5fa1e2ffeb-dirty (Apr 23 2021 - 09:11:14 +0200)
CPU: Freescale i.MX8MQ rev2.1 at 1000 MHz
Reset cause: POR
Model: Ronetix iMX8M-CM SoM
DRAM: 1 GiB
WDT: Started with servicing (60s timeout)
MMC: FSL_SDHC: 0, FSL_SDHC: 1
Loading Environment from MMC... OK
In: serial
Out: serial
Err: serial
Net:
Warning: ethernet@30be0000 (eth0) using random MAC address -
42:0d:e7:78:da:53
eth0: ethernet@30be0000
Hit any key to stop autoboot: 0
u-boot=>
Signed-off-by: Ilko Iliev <iliev@ronetix.at>
diff --git a/board/ronetix/imx8mq-cm/spl.c b/board/ronetix/imx8mq-cm/spl.c
new file mode 100644
index 0000000..c32a06f
--- /dev/null
+++ b/board/ronetix/imx8mq-cm/spl.c
@@ -0,0 +1,165 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2018 NXP
+ *
+ */
+
+#include <common.h>
+#include <hang.h>
+#include <init.h>
+#include <asm/arch/ddr.h>
+#include <asm/arch/imx8mq_pins.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/clock.h>
+#include <asm/mach-imx/gpio.h>
+#include <asm/mach-imx/mxc_i2c.h>
+#include <fsl_esdhc_imx.h>
+#include <linux/delay.h>
+#include <spl.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static void spl_dram_init(void)
+{
+ /* ddr init */
+ ddr_init(&dram_timing);
+}
+
+#define USDHC2_CD_GPIO IMX_GPIO_NR(2, 12)
+#define USDHC1_PWR_GPIO IMX_GPIO_NR(2, 10)
+#define USDHC2_PWR_GPIO IMX_GPIO_NR(2, 19)
+
+int board_mmc_getcd(struct mmc *mmc)
+{
+ struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
+ int ret = 0;
+
+ switch (cfg->esdhc_base) {
+ case USDHC1_BASE_ADDR:
+ ret = 1;
+ break;
+ case USDHC2_BASE_ADDR:
+ ret = gpio_get_value(USDHC2_CD_GPIO);
+ return ret;
+ }
+
+ return 1;
+}
+
+#define USDHC_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_HYS | PAD_CTL_PUE | \
+ PAD_CTL_FSEL2)
+#define USDHC_GPIO_PAD_CTRL (PAD_CTL_PUE | PAD_CTL_DSE1)
+
+static iomux_v3_cfg_t const usdhc1_pads[] = {
+ IMX8MQ_PAD_SD1_CLK__USDHC1_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ IMX8MQ_PAD_SD1_CMD__USDHC1_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ IMX8MQ_PAD_SD1_DATA0__USDHC1_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ IMX8MQ_PAD_SD1_DATA1__USDHC1_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ IMX8MQ_PAD_SD1_DATA2__USDHC1_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ IMX8MQ_PAD_SD1_DATA3__USDHC1_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ IMX8MQ_PAD_SD1_DATA4__USDHC1_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ IMX8MQ_PAD_SD1_DATA5__USDHC1_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ IMX8MQ_PAD_SD1_DATA6__USDHC1_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ IMX8MQ_PAD_SD1_DATA7__USDHC1_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ IMX8MQ_PAD_SD1_RESET_B__GPIO2_IO10 | MUX_PAD_CTRL(NO_PAD_CTRL),
+};
+
+static iomux_v3_cfg_t const usdhc2_pads[] = {
+ IMX8MQ_PAD_SD2_CLK__USDHC2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ IMX8MQ_PAD_SD2_CMD__USDHC2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ IMX8MQ_PAD_SD2_DATA0__USDHC2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ IMX8MQ_PAD_SD2_DATA1__USDHC2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ IMX8MQ_PAD_SD2_DATA2__USDHC2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ IMX8MQ_PAD_SD2_DATA3__USDHC2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ IMX8MQ_PAD_SD2_CD_B__GPIO2_IO12 | MUX_PAD_CTRL(USDHC_GPIO_PAD_CTRL),
+ IMX8MQ_PAD_SD2_RESET_B__GPIO2_IO19 | MUX_PAD_CTRL(USDHC_GPIO_PAD_CTRL),
+};
+
+static struct fsl_esdhc_cfg usdhc_cfg[2] = {
+ {USDHC1_BASE_ADDR, 0, 8},
+ {USDHC2_BASE_ADDR, 0, 4},
+};
+
+int board_mmc_init(struct bd_info *bis)
+{
+ int i, ret;
+ /*
+ * According to the board_mmc_init() the following map is done:
+ * (U-Boot device node) (Physical Port)
+ * mmc0 USDHC1
+ * mmc1 USDHC2
+ */
+ for (i = 0; i < CONFIG_SYS_FSL_USDHC_NUM; i++) {
+ switch (i) {
+ case 0:
+ init_clk_usdhc(0);
+ usdhc_cfg[0].sdhc_clk = mxc_get_clock(USDHC1_CLK_ROOT);
+ imx_iomux_v3_setup_multiple_pads(usdhc1_pads,
+ ARRAY_SIZE(usdhc1_pads));
+ gpio_request(USDHC1_PWR_GPIO, "usdhc1_reset");
+ gpio_direction_output(USDHC1_PWR_GPIO, 0);
+ udelay(500);
+ gpio_direction_output(USDHC1_PWR_GPIO, 1);
+ break;
+ case 1:
+ init_clk_usdhc(1);
+ usdhc_cfg[1].sdhc_clk = mxc_get_clock(USDHC2_CLK_ROOT);
+ imx_iomux_v3_setup_multiple_pads(usdhc2_pads,
+ ARRAY_SIZE(usdhc2_pads));
+ gpio_request(USDHC2_PWR_GPIO, "usdhc2_reset");
+ gpio_direction_output(USDHC2_PWR_GPIO, 0);
+ udelay(500);
+ gpio_direction_output(USDHC2_PWR_GPIO, 1);
+ break;
+ default:
+ printf("Warning: you configured more USDHC controllers(%d)"
+ " than supported by the board\n", i + 1);
+ return -EINVAL;
+ }
+
+ ret = fsl_esdhc_initialize(bis, &usdhc_cfg[i]);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+void spl_board_init(void)
+{
+ puts("Normal Boot\n");
+}
+
+void board_init_f(ulong dummy)
+{
+ int ret;
+
+ /* Clear global data */
+ memset((void *)gd, 0, sizeof(gd_t));
+
+ arch_cpu_init();
+
+ init_uart_clk(0);
+
+ board_early_init_f();
+
+ timer_init();
+
+ preloader_console_init();
+
+ /* Clear the BSS. */
+ memset(__bss_start, 0, __bss_end - __bss_start);
+
+ ret = spl_init();
+ if (ret) {
+ debug("spl_init() failed: %d\n", ret);
+ hang();
+ }
+
+ enable_tzc380();
+
+ /* DDR initialization */
+ spl_dram_init();
+
+ board_init_r(NULL, 0);
+}