board: kontron: pitx-imx8m: Add Kontron pitx-imx8m board support
The Kontron pitx-imx8m is an NXP i.MX8MQ based board in the pITX form factor.
Signed-off-by: Heiko Thiery <heiko.thiery@gmail.com>
diff --git a/board/kontron/pitx_imx8m/pitx_imx8m.c b/board/kontron/pitx_imx8m/pitx_imx8m.c
new file mode 100644
index 0000000..d655fe0
--- /dev/null
+++ b/board/kontron/pitx_imx8m/pitx_imx8m.c
@@ -0,0 +1,169 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include "pitx_misc.h"
+#include <common.h>
+#include <init.h>
+#include <mmc.h>
+#include <miiphy.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/imx8mq_pins.h>
+#include <asm/arch/sys_proto.h>
+#include <asm-generic/gpio.h>
+#include <asm/mach-imx/gpio.h>
+#include <asm/mach-imx/iomux-v3.h>
+#include <linux/delay.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_UART3_RXD__UART3_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
+ IMX8MQ_PAD_UART3_TXD__UART3_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
+ IMX8MQ_PAD_ECSPI1_SS0__UART3_RTS_B | MUX_PAD_CTRL(UART_PAD_CTRL),
+ IMX8MQ_PAD_ECSPI1_MISO__UART3_CTS_B | 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 board_phys_sdram_size(phys_size_t *memsize)
+{
+ int variant = 0;
+
+ variant = get_pitx_board_variant();
+
+ switch(variant) {
+ case 2:
+ *memsize = 0x80000000;
+ break;
+ case 3:
+ *memsize = 0x100000000;
+ break;
+ default:
+ printf("Unknown DDR type!!!\n");
+ *memsize = 0x40000000;
+ break;
+ }
+
+ debug("Memsize: %d MiB\n", (int)(*memsize >> 20));
+
+ return 0;
+}
+
+
+#ifdef CONFIG_FEC_MXC
+#define FEC_RST_PAD IMX_GPIO_NR(1, 11)
+static iomux_v3_cfg_t const fec1_rst_pads[] = {
+ IMX8MQ_PAD_GPIO1_IO11__GPIO1_IO11 | MUX_PAD_CTRL(NO_PAD_CTRL),
+};
+
+static void setup_iomux_fec(void)
+{
+ imx_iomux_v3_setup_multiple_pads(fec1_rst_pads,
+ ARRAY_SIZE(fec1_rst_pads));
+}
+
+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)
+{
+ unsigned int val;
+
+ /*
+ * Set LED configuration register 1:
+ * LED2_SEL: 0b1011 (link established, blink on activity)
+ */
+ val = phy_read(phydev, MDIO_DEVAD_NONE, 0x18);
+ val &= 0xf0ff;
+ phy_write(phydev, MDIO_DEVAD_NONE, 0x18, val | (0xb << 8));
+
+ if (phydev->drv->config)
+ phydev->drv->config(phydev);
+ return 0;
+}
+#endif
+
+int board_init(void)
+{
+#ifdef CONFIG_FEC_MXC
+ setup_fec();
+#endif
+
+#if defined(CONFIG_USB_DWC3) || defined(CONFIG_USB_XHCI_DWC3)
+ init_usb_clk();
+#endif
+
+ return 0;
+}
+
+#ifdef CONFIG_MISC_INIT_R
+#define TPM_RESET IMX_GPIO_NR(3, 2)
+#define USBHUB_RESET IMX_GPIO_NR(3, 4)
+
+static void reset_device_by_gpio(const char *label, int pin, int delay_ms)
+{
+ gpio_request(pin, label);
+ gpio_direction_output(pin, 0);
+ mdelay(delay_ms);
+ gpio_direction_output(pin, 1);
+}
+
+int misc_init_r(void)
+{
+ /*
+ * reset TPM chip (Infineon SLB9670) as required by datasheet
+ * (60ms minimum Reset Inactive Time, 70ms implemented)
+ */
+ reset_device_by_gpio("tpm_reset", TPM_RESET, 70);
+
+ /*
+ * reset USB hub as required by datasheet
+ * (3ms minimum reset duration, 10ms implemented)
+ */
+ reset_device_by_gpio("usbhub_reset", USBHUB_RESET, 10);
+
+ return 0;
+}
+#endif
+
+int board_mmc_get_env_dev(int devno)
+{
+ return devno;
+}
+
+uint mmc_get_env_part(struct mmc *mmc)
+{
+ /* part 1 for eMMC, part 1 for SD card */
+ return (mmc_get_env_dev() == 0) ? 1 : 0;
+}
+
+int board_late_init(void)
+{
+ return 0;
+}