board: mntre: imx8mq: Add MNT Reform 2 board support
The MNT Reform 2 is a modular DIY laptop. In its initial version it
is based on the BoundaryDevices i.MX8MQ SoM. Some parts have been
lifted from BoundaryDevices official U-Boot downstream project.
Signed-off-by: Patrick Wildt <patrick@blueri.se>
Tested-by: Vagrant Cascadian <vagrant@debian.org>
Tested-by: Vagrant Cascadian <vagrant@debian.org>
Signed-off-by: Stefano Babic <sbabic@denx.de>
diff --git a/board/mntre/imx8mq_reform2/spl.c b/board/mntre/imx8mq_reform2/spl.c
new file mode 100644
index 0000000..21fad49
--- /dev/null
+++ b/board/mntre/imx8mq_reform2/spl.c
@@ -0,0 +1,260 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2018 NXP
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <hang.h>
+#include <image.h>
+#include <init.h>
+#include <log.h>
+#include <asm/global_data.h>
+#include <asm/io.h>
+#include <errno.h>
+#include <asm/io.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/iomux-v3.h>
+#include <asm/mach-imx/gpio.h>
+#include <asm/mach-imx/mxc_i2c.h>
+#include <fsl_esdhc_imx.h>
+#include <mmc.h>
+#include <linux/delay.h>
+#include <power/pmic.h>
+#include <spl.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+extern struct dram_timing_info dram_timing_ch2;
+
+static void spl_dram_init(void)
+{
+ ddr_init(&dram_timing_ch2);
+}
+
+#define I2C_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_HYS | PAD_CTL_PUE)
+#define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
+static struct i2c_pads_info i2c_pad_info1 = {
+ .scl = {
+ .i2c_mode = IMX8MQ_PAD_I2C1_SCL__I2C1_SCL | PC,
+ .gpio_mode = IMX8MQ_PAD_I2C1_SCL__GPIO5_IO14 | PC,
+ .gp = IMX_GPIO_NR(5, 14),
+ },
+ .sda = {
+ .i2c_mode = IMX8MQ_PAD_I2C1_SDA__I2C1_SDA | PC,
+ .gpio_mode = IMX8MQ_PAD_I2C1_SDA__GPIO5_IO15 | PC,
+ .gp = IMX_GPIO_NR(5, 15),
+ },
+};
+
+#define USDHC2_VSEL IMX_GPIO_NR(1, 8)
+#define USDHC2_CD_GPIO IMX_GPIO_NR(2, 12)
+#define USDHC1_PWR_GPIO IMX_GPIO_NR(2, 10)
+
+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), /* 0xd6 */
+ IMX8MQ_PAD_SD2_CMD__USDHC2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL), /* 0xd6 */
+ IMX8MQ_PAD_SD2_DATA0__USDHC2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL), /* 0xd6 */
+ IMX8MQ_PAD_SD2_DATA1__USDHC2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL), /* 0xd6 */
+ IMX8MQ_PAD_SD2_DATA2__USDHC2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL), /* 0x16 */
+ IMX8MQ_PAD_SD2_DATA3__USDHC2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL), /* 0xd6 */
+ IMX8MQ_PAD_SD2_CD_B__GPIO2_IO12 | MUX_PAD_CTRL(USDHC_GPIO_PAD_CTRL),
+ IMX8MQ_PAD_GPIO1_IO08__GPIO1_IO8 | MUX_PAD_CTRL(0x91),
+};
+
+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 < CFG_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_VSEL, "usdhc2_vsel");
+ gpio_direction_output(USDHC2_VSEL, 0);
+ 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;
+}
+
+#define I2C1_PCA9546_RESET IMX_GPIO_NR(1, 4)
+#define ARM_DRAM_VSEL IMX_GPIO_NR(3, 24)
+#define DRAM_1P1_VSEL IMX_GPIO_NR(2, 11)
+#define SOC_GPU_VPU_VSEL IMX_GPIO_NR(2, 20)
+
+#define I2C_MUX_ADDR 0x70
+#define I2C_FAN53555_ADDR 0x60
+
+static iomux_v3_cfg_t const power_pads[] = {
+ IMX8MQ_PAD_GPIO1_IO04__GPIO1_IO4 | MUX_PAD_CTRL(0x46),
+};
+
+int power_init_board(void)
+{
+ uint8_t val;
+
+ imx_iomux_v3_setup_multiple_pads(power_pads,
+ ARRAY_SIZE(usdhc2_pads));
+
+ /* Release I2C multiplexer reset */
+ gpio_request(I2C1_PCA9546_RESET, "pca9546_reset");
+ gpio_direction_output(I2C1_PCA9546_RESET, 1);
+
+ /* Select VSEL0 on voltage regulators */
+ gpio_request(ARM_DRAM_VSEL, "arm_dram_vsel");
+ gpio_direction_output(ARM_DRAM_VSEL, 0);
+ gpio_request(DRAM_1P1_VSEL, "dram_1p1_vsel");
+ gpio_direction_output(DRAM_1P1_VSEL, 0);
+ gpio_request(SOC_GPU_VPU_VSEL, "soc_gpu_vpu_vsel");
+ gpio_direction_output(SOC_GPU_VPU_VSEL, 0);
+
+ /* Set mux to target ARM/DRAM regulator */
+ i2c_write(I2C_MUX_ADDR, 1, 1, NULL, 0);
+ /* .6 + .40 = 1.00 */
+ val = 0x80 + 40;
+ i2c_write(I2C_FAN53555_ADDR, 0, 1, &val, 1);
+ i2c_write(I2C_FAN53555_ADDR, 1, 1, &val, 1);
+
+ /* Set mux to target DRAM regulator */
+ i2c_write(I2C_MUX_ADDR, 2, 1, NULL, 0);
+ /* .6 + .50 = 1.10 */
+ val = 0x80 + 50;
+ i2c_write(I2C_FAN53555_ADDR, 0, 1, &val, 1);
+ i2c_write(I2C_FAN53555_ADDR, 1, 1, &val, 1);
+
+ /* Set mux to target SoC/GPU/VPU regulator */
+ i2c_write(I2C_MUX_ADDR, 4, 1, NULL, 0);
+ /* .6 + .30 = .90 */
+ val = 0x80 + 30;
+ i2c_write(I2C_FAN53555_ADDR, 0, 1, &val, 1);
+ i2c_write(I2C_FAN53555_ADDR, 1, 1, &val, 1);
+
+ /* Set mux to target peripherals */
+ i2c_write(I2C_MUX_ADDR, 8, 1, NULL, 0);
+
+ return 0;
+}
+
+void spl_board_init(void)
+{
+ puts("Normal Boot\n");
+}
+
+#ifdef CONFIG_SPL_LOAD_FIT
+int board_fit_config_name_match(const char *name)
+{
+ /* Just empty function now - can't decide what to choose */
+ debug("%s: %s\n", __func__, name);
+
+ return 0;
+}
+#endif
+
+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();
+
+ setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
+
+ power_init_board();
+
+ /* DDR initialization */
+ spl_dram_init();
+
+ board_init_r(NULL, 0);
+}