imx6: add Bachmann OT1200 board
This patch adds support for the OT1200 series of devices.
Following components are used in u-boot:
+ ethernet
+ i2c
+ emmc
+ gpio
For more details see README.
Changes v1 > v2
- make use of enable_cspi_clock(..)
- fix usage of OUTPUT_40OHM define
- added README
Changes v2 > v3
- improve spelling in README
- added own copy of mx6q_4x_mt41j128.cfg
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
diff --git a/board/bachmann/ot1200/ot1200.c b/board/bachmann/ot1200/ot1200.c
new file mode 100644
index 0000000..0d5ede5
--- /dev/null
+++ b/board/bachmann/ot1200/ot1200.c
@@ -0,0 +1,251 @@
+/*
+ * Copyright (C) 2010-2013 Freescale Semiconductor, Inc.
+ * Copyright (C) 2014, Bachmann electronic GmbH
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/iomux.h>
+#include <malloc.h>
+#include <asm/arch/mx6-pins.h>
+#include <asm/imx-common/iomux-v3.h>
+#include <asm/imx-common/mxc_i2c.h>
+#include <asm/imx-common/boot_mode.h>
+#include <asm/arch/crm_regs.h>
+#include <mmc.h>
+#include <fsl_esdhc.h>
+#include <netdev.h>
+#include <i2c.h>
+#include <pca953x.h>
+#include <asm/gpio.h>
+#include <phy.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define OUTPUT_40OHM (PAD_CTL_SPEED_MED|PAD_CTL_DSE_40ohm)
+
+#define UART_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
+ OUTPUT_40OHM | PAD_CTL_SRE_FAST | PAD_CTL_HYS)
+
+#define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP | \
+ PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm | \
+ PAD_CTL_SRE_FAST | PAD_CTL_HYS)
+
+#define ENET_PAD_CTRL (PAD_CTL_PUS_100K_UP | OUTPUT_40OHM | \
+ PAD_CTL_HYS)
+
+#define SPI_PAD_CTRL (PAD_CTL_HYS | OUTPUT_40OHM | \
+ PAD_CTL_SRE_FAST)
+
+#define I2C_PAD_CTRL (PAD_CTL_PUS_100K_UP | OUTPUT_40OHM | \
+ PAD_CTL_HYS | PAD_CTL_ODE | PAD_CTL_SRE_FAST)
+
+int dram_init(void)
+{
+ gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
+
+ return 0;
+}
+
+static iomux_v3_cfg_t const uart1_pads[] = {
+ MX6_PAD_CSI0_DAT10__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
+ MX6_PAD_CSI0_DAT11__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
+};
+
+static void setup_iomux_uart(void)
+{
+ imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
+}
+
+static iomux_v3_cfg_t const enet_pads[] = {
+ MX6_PAD_KEY_ROW1__ENET_COL | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_KEY_COL3__ENET_CRS | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_ENET_MDIO__ENET_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_ENET_MDC__ENET_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_GPIO_16__ENET_REF_CLK | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_GPIO_18__ENET_RX_CLK | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_ENET_RXD0__ENET_RX_DATA0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_ENET_RXD1__ENET_RX_DATA1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_KEY_COL2__ENET_RX_DATA2 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_KEY_COL0__ENET_RX_DATA3 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_ENET_CRS_DV__ENET_RX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_ENET_REF_CLK__ENET_TX_CLK | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_ENET_TXD0__ENET_TX_DATA0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_ENET_TXD1__ENET_TX_DATA1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_KEY_ROW2__ENET_TX_DATA2 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_KEY_ROW0__ENET_TX_DATA3 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+ MX6_PAD_ENET_TX_EN__ENET_TX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL),
+};
+
+static void setup_iomux_enet(void)
+{
+ imx_iomux_v3_setup_multiple_pads(enet_pads, ARRAY_SIZE(enet_pads));
+}
+
+static iomux_v3_cfg_t const ecspi1_pads[] = {
+ MX6_PAD_DISP0_DAT3__ECSPI3_SS0 | MUX_PAD_CTRL(SPI_PAD_CTRL),
+ MX6_PAD_DISP0_DAT4__ECSPI3_SS1 | MUX_PAD_CTRL(SPI_PAD_CTRL),
+ MX6_PAD_DISP0_DAT2__ECSPI3_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL),
+ MX6_PAD_DISP0_DAT1__ECSPI3_MOSI | MUX_PAD_CTRL(SPI_PAD_CTRL),
+ MX6_PAD_DISP0_DAT0__ECSPI3_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL),
+};
+
+static void setup_iomux_spi(void)
+{
+ imx_iomux_v3_setup_multiple_pads(ecspi1_pads, ARRAY_SIZE(ecspi1_pads));
+}
+
+int board_early_init_f(void)
+{
+ setup_iomux_uart();
+ setup_iomux_spi();
+
+ return 0;
+}
+
+static iomux_v3_cfg_t const usdhc3_pads[] = {
+ MX6_PAD_SD3_CLK__SD3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD3_CMD__SD3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD3_DAT4__SD3_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD3_DAT5__SD3_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD3_DAT6__SD3_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD3_DAT7__SD3_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD3_RST__SD3_RESET | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+};
+
+int board_mmc_getcd(struct mmc *mmc)
+{
+ return 1;
+}
+
+struct fsl_esdhc_cfg usdhc_cfg[] = {
+ {USDHC3_BASE_ADDR},
+};
+
+int board_mmc_init(bd_t *bis)
+{
+ usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
+ usdhc_cfg[0].max_bus_width = 8;
+
+ imx_iomux_v3_setup_multiple_pads(usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
+
+ return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
+}
+
+#define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
+
+/* I2C3 - IO expander */
+static struct i2c_pads_info i2c_pad_info2 = {
+ .scl = {
+ .i2c_mode = MX6_PAD_EIM_D17__I2C3_SCL | PC,
+ .gpio_mode = MX6_PAD_EIM_D17__GPIO3_IO17 | PC,
+ .gp = IMX_GPIO_NR(3, 17)
+ },
+ .sda = {
+ .i2c_mode = MX6_PAD_EIM_D18__I2C3_SDA | PC,
+ .gpio_mode = MX6_PAD_EIM_D18__GPIO3_IO18 | PC,
+ .gp = IMX_GPIO_NR(3, 18)
+ }
+};
+
+static iomux_v3_cfg_t const pwm_pad[] = {
+ MX6_PAD_SD1_CMD__PWM4_OUT | MUX_PAD_CTRL(OUTPUT_40OHM),
+};
+
+static void leds_on(void)
+{
+ /* turn on all possible leds connected via GPIO expander */
+ i2c_set_bus_num(2);
+ pca953x_set_dir(CONFIG_SYS_I2C_PCA953X_ADDR, 0xffff, PCA953X_DIR_OUT);
+ pca953x_set_val(CONFIG_SYS_I2C_PCA953X_ADDR, 0xffff, 0x0);
+}
+
+static void backlight_lcd_off(void)
+{
+ unsigned gpio = IMX_GPIO_NR(2, 0);
+ gpio_direction_output(gpio, 0);
+
+ gpio = IMX_GPIO_NR(2, 3);
+ gpio_direction_output(gpio, 0);
+}
+
+int board_eth_init(bd_t *bis)
+{
+ uint32_t base = IMX_FEC_BASE;
+ struct mii_dev *bus = NULL;
+ struct phy_device *phydev = NULL;
+ int ret;
+
+ setup_iomux_enet();
+
+ bus = fec_get_miibus(base, -1);
+ if (!bus)
+ return 0;
+
+ /* scan phy 0 and 5 */
+ phydev = phy_find_by_mask(bus, 0x21, PHY_INTERFACE_MODE_RGMII);
+ if (!phydev) {
+ free(bus);
+ return 0;
+ }
+
+ /* depending on the phy address we can detect our board version */
+ if (phydev->addr == 0)
+ setenv("boardver", "");
+ else
+ setenv("boardver", "mr");
+
+ printf("using phy at %d\n", phydev->addr);
+ ret = fec_probe(bis, -1, base, bus, phydev);
+ if (ret) {
+ printf("FEC MXC: %s:failed\n", __func__);
+ free(phydev);
+ free(bus);
+ }
+ return 0;
+}
+
+int board_init(void)
+{
+ gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
+
+ backlight_lcd_off();
+
+ setup_i2c(2, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info2);
+
+ leds_on();
+
+ /* enable ecspi3 clocks */
+ enable_cspi_clock(1, 2);
+
+ return 0;
+}
+
+int checkboard(void)
+{
+ puts("Board: "CONFIG_SYS_BOARD"\n");
+ return 0;
+}
+
+#ifdef CONFIG_CMD_BMODE
+static const struct boot_mode board_boot_modes[] = {
+ /* 4 bit bus width */
+ {"mmc0", MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00)},
+ {NULL, 0},
+};
+#endif
+
+int misc_init_r(void)
+{
+#ifdef CONFIG_CMD_BMODE
+ add_board_boot_modes(board_boot_modes);
+#endif
+ return 0;
+}