imx: Add support for i.MX8MM Beacon EmbeddedWorks devkit.
Beacon EmbeddedWorks, formerly known as Logic PD, is releasing
a devkit based on the i.MX8M Mini SoC consisting of baseboard +
SOM.
It supports eMMC on the SOM, microSD on the baseboard, various
GPIO, the PINCTRL, and UART.
Signed-off-by: Adam Ford <aford173@gmail.com>
diff --git a/board/beacon/imx8mm/spl.c b/board/beacon/imx8mm/spl.c
new file mode 100644
index 0000000..35be2e8
--- /dev/null
+++ b/board/beacon/imx8mm/spl.c
@@ -0,0 +1,155 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <common.h>
+#include <cpu_func.h>
+#include <hang.h>
+#include <spl.h>
+#include <asm/io.h>
+#include <asm/mach-imx/iomux-v3.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/imx8mm_pins.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/mach-imx/boot_mode.h>
+#include <asm/arch/ddr.h>
+
+#include <dm/uclass.h>
+#include <dm/device.h>
+#include <dm/uclass-internal.h>
+#include <dm/device-internal.h>
+
+#include <power/pmic.h>
+#include <power/bd71837.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int spl_board_boot_device(enum boot_device boot_dev_spl)
+{
+ switch (boot_dev_spl) {
+ case SD2_BOOT:
+ case MMC2_BOOT:
+ return BOOT_DEVICE_MMC1;
+ case SD3_BOOT:
+ case MMC3_BOOT:
+ return BOOT_DEVICE_MMC2;
+ default:
+ return BOOT_DEVICE_NONE;
+ }
+}
+
+static void spl_dram_init(void)
+{
+ ddr_init(&dram_timing);
+}
+
+void spl_board_init(void)
+{
+ debug("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
+
+#define UART_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_FSEL1)
+#define WDOG_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_ODE | PAD_CTL_PUE | PAD_CTL_PE)
+
+static iomux_v3_cfg_t const uart_pads[] = {
+ IMX8MM_PAD_UART2_RXD_UART2_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
+ IMX8MM_PAD_UART2_TXD_UART2_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
+};
+
+static iomux_v3_cfg_t const wdog_pads[] = {
+ IMX8MM_PAD_GPIO1_IO02_WDOG1_WDOG_B | MUX_PAD_CTRL(WDOG_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;
+}
+
+static int power_init_board(void)
+{
+ struct udevice *dev;
+ int ret;
+
+ ret = pmic_get("pmic@4b", &dev);
+ if (ret == -ENODEV) {
+ puts("No pmic\n");
+ return 0;
+ }
+ if (ret != 0)
+ return ret;
+
+ /* decrease RESET key long push time from the default 10s to 10ms */
+ pmic_reg_write(dev, BD718XX_PWRONCONFIG1, 0x0);
+
+ /* unlock the PMIC regs */
+ pmic_reg_write(dev, BD718XX_REGLOCK, 0x1);
+
+ /* increase VDD_SOC to typical value 0.85v before first DRAM access */
+ pmic_reg_write(dev, BD718XX_BUCK1_VOLT_RUN, 0x0f);
+
+ /* increase VDD_DRAM to 0.975v for 3Ghz DDR */
+ pmic_reg_write(dev, BD718XX_1ST_NODVS_BUCK_VOLT, 0x83);
+
+ /* lock the PMIC regs */
+ pmic_reg_write(dev, BD718XX_REGLOCK, 0x11);
+
+ return 0;
+}
+
+void board_init_f(ulong dummy)
+{
+ struct udevice *dev;
+ int ret;
+
+ arch_cpu_init();
+
+ init_uart_clk(1);
+
+ board_early_init_f();
+
+ timer_init();
+
+ preloader_console_init();
+
+ /* Clear the BSS. */
+ memset(__bss_start, 0, __bss_end - __bss_start);
+
+ ret = spl_early_init();
+ if (ret) {
+ debug("spl_early_init() failed: %d\n", ret);
+ hang();
+ }
+
+ ret = uclass_get_device_by_name(UCLASS_CLK,
+ "clock-controller@30380000",
+ &dev);
+ if (ret < 0) {
+ printf("Failed to find clock node. Check device tree\n");
+ hang();
+ }
+
+ enable_tzc380();
+
+ power_init_board();
+
+ /* DDR initialization */
+ spl_dram_init();
+
+ board_init_r(NULL, 0);
+}