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>

6 files changed, 478 insertions, 0 deletions

diff --git a/board/bachmann/ot1200/Kconfig b/board/bachmann/ot1200/Kconfig
new file mode 100644
index 0000000..55a825d
--- /dev/null
+++ b/board/bachmann/ot1200/Kconfig
@@ -0,0 +1,23 @@
+if TARGET_OT1200
+
+config SYS_CPU
+	string
+	default "armv7"
+
+config SYS_BOARD
+	string
+	default "ot1200"
+
+config SYS_VENDOR
+	string
+	default "bachmann"
+
+config SYS_SOC
+	string
+	default "mx6"
+
+config SYS_CONFIG_NAME
+	string
+	default "ot1200"
+
+endif
diff --git a/board/bachmann/ot1200/MAINTAINERS b/board/bachmann/ot1200/MAINTAINERS
new file mode 100644
index 0000000..ad75c24
--- /dev/null
+++ b/board/bachmann/ot1200/MAINTAINERS
@@ -0,0 +1,6 @@
+BACHMANN ELECTRONIC OT1200 BOARD
+M:	Christian Gmeiner <christian.gmeiner@gmail.com>
+S:	Maintained
+F:	board/bachmann/ot1200
+F:	include/configs/ot1200.h
+F:	configs/ot1200*_defconfig
diff --git a/board/bachmann/ot1200/Makefile b/board/bachmann/ot1200/Makefile
new file mode 100644
index 0000000..1bd42e8
--- /dev/null
+++ b/board/bachmann/ot1200/Makefile
@@ -0,0 +1,9 @@
+#
+# Copyright (C) 2012-2013, Guennadi Liakhovetski <lg@denx.de>
+# (C) Copyright 2012-2013 Freescale Semiconductor, Inc.
+# Copyright (C) 2013, Boundary Devices <info@boundarydevices.com>
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y  := ot1200.o
diff --git a/board/bachmann/ot1200/README b/board/bachmann/ot1200/README
new file mode 100644
index 0000000..c03d44e
--- /dev/null
+++ b/board/bachmann/ot1200/README
@@ -0,0 +1,20 @@
+U-Boot for the Bachmann electronic GmbH OT1200 devices
+
+There are two different versions of the base board, which differ
+in the way ethernet is done. The variant detection is done during
+runtime based on the address of the found phy.
+
+- "mr" variant
+FEC is connected directly to an ethernet switch (KSZ8895). The ethernet
+port is always up and auto-negotiation is not possible.
+
+- normal variant
+FEC is connected to a normal phy and auto-negotiation is possible.
+
+
+The variant name is part of the dtb file name loaded by u-boot. This
+make is possible to boot the linux kernel and make use variant specific
+devicetree (fixed-phy link).
+
+In order to support different display resoltuions/sizes the OT1200 devices
+are making use of EDID data stored in an i2c EEPROM.
diff --git a/board/bachmann/ot1200/mx6q_4x_mt41j128.cfg b/board/bachmann/ot1200/mx6q_4x_mt41j128.cfg
new file mode 100644
index 0000000..bb6c60b
--- /dev/null
+++ b/board/bachmann/ot1200/mx6q_4x_mt41j128.cfg
@@ -0,0 +1,169 @@
+/*
+ * Copyright (C) 2011 Freescale Semiconductor, Inc.
+ * Jason Liu <r64343@freescale.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ *
+ * Refer doc/README.imximage for more details about how-to configure
+ * and create imximage boot image
+ *
+ * The syntax is taken as close as possible with the kwbimage
+ */
+
+/* image version */
+IMAGE_VERSION 2
+
+/*
+ * Boot Device : one of
+ * spi, sd (the board has no nand neither onenand)
+ */
+BOOT_FROM      sd
+
+/*
+ * Device Configuration Data (DCD)
+ *
+ * Each entry must have the format:
+ * Addr-type           Address        Value
+ *
+ * where:
+ *      Addr-type register length (1,2 or 4 bytes)
+ *      Address   absolute address of the register
+ *      value     value to be stored in the register
+ */
+DATA 4 0x020e05a8 0x00000030
+DATA 4 0x020e05b0 0x00000030
+DATA 4 0x020e0524 0x00000030
+DATA 4 0x020e051c 0x00000030
+
+DATA 4 0x020e0518 0x00000030
+DATA 4 0x020e050c 0x00000030
+DATA 4 0x020e05b8 0x00000030
+DATA 4 0x020e05c0 0x00000030
+
+DATA 4 0x020e05ac 0x00020030
+DATA 4 0x020e05b4 0x00020030
+DATA 4 0x020e0528 0x00020030
+DATA 4 0x020e0520 0x00020030
+
+DATA 4 0x020e0514 0x00020030
+DATA 4 0x020e0510 0x00020030
+DATA 4 0x020e05bc 0x00020030
+DATA 4 0x020e05c4 0x00020030
+
+DATA 4 0x020e056c 0x00020030
+DATA 4 0x020e0578 0x00020030
+DATA 4 0x020e0588 0x00020030
+DATA 4 0x020e0594 0x00020030
+
+DATA 4 0x020e057c 0x00020030
+DATA 4 0x020e0590 0x00003000
+DATA 4 0x020e0598 0x00003000
+DATA 4 0x020e058c 0x00000000
+
+DATA 4 0x020e059c 0x00003030
+DATA 4 0x020e05a0 0x00003030
+DATA 4 0x020e0784 0x00000030
+DATA 4 0x020e0788 0x00000030
+
+DATA 4 0x020e0794 0x00000030
+DATA 4 0x020e079c 0x00000030
+DATA 4 0x020e07a0 0x00000030
+DATA 4 0x020e07a4 0x00000030
+
+DATA 4 0x020e07a8 0x00000030
+DATA 4 0x020e0748 0x00000030
+DATA 4 0x020e074c 0x00000030
+DATA 4 0x020e0750 0x00020000
+
+DATA 4 0x020e0758 0x00000000
+DATA 4 0x020e0774 0x00020000
+DATA 4 0x020e078c 0x00000030
+DATA 4 0x020e0798 0x000C0000
+
+DATA 4 0x021b081c 0x33333333
+DATA 4 0x021b0820 0x33333333
+DATA 4 0x021b0824 0x33333333
+DATA 4 0x021b0828 0x33333333
+
+DATA 4 0x021b481c 0x33333333
+DATA 4 0x021b4820 0x33333333
+DATA 4 0x021b4824 0x33333333
+DATA 4 0x021b4828 0x33333333
+
+DATA 4 0x021b0018 0x00081740
+
+DATA 4 0x021b001c 0x00008000
+DATA 4 0x021b000c 0x555A7974
+DATA 4 0x021b0010 0xDB538F64
+DATA 4 0x021b0014 0x01FF00DB
+DATA 4 0x021b002c 0x000026D2
+
+DATA 4 0x021b0030 0x005A1023
+DATA 4 0x021b0008 0x09444040
+DATA 4 0x021b0004 0x00025576
+DATA 4 0x021b0040 0x00000027
+DATA 4 0x021b0000 0x831A0000
+
+DATA 4 0x021b001c 0x04088032
+DATA 4 0x021b001c 0x0408803A
+DATA 4 0x021b001c 0x00008033
+DATA 4 0x021b001c 0x0000803B
+DATA 4 0x021b001c 0x00428031
+DATA 4 0x021b001c 0x00428039
+DATA 4 0x021b001c 0x19308030
+DATA 4 0x021b001c 0x19308038
+
+DATA 4 0x021b001c 0x04008040
+DATA 4 0x021b001c 0x04008048
+DATA 4 0x021b0800 0xA1380003
+DATA 4 0x021b4800 0xA1380003
+DATA 4 0x021b0020 0x00005800
+DATA 4 0x021b0818 0x00022227
+DATA 4 0x021b4818 0x00022227
+
+DATA 4 0x021b083c 0x434B0350
+DATA 4 0x021b0840 0x034C0359
+DATA 4 0x021b483c 0x434B0350
+DATA 4 0x021b4840 0x03650348
+DATA 4 0x021b0848 0x4436383B
+DATA 4 0x021b4848 0x39393341
+DATA 4 0x021b0850 0x35373933
+DATA 4 0x021b4850 0x48254A36
+
+DATA 4 0x021b080c 0x001F001F
+DATA 4 0x021b0810 0x001F001F
+
+DATA 4 0x021b480c 0x00440044
+DATA 4 0x021b4810 0x00440044
+
+DATA 4 0x021b08b8 0x00000800
+DATA 4 0x021b48b8 0x00000800
+
+DATA 4 0x021b001c 0x00000000
+DATA 4 0x021b0404 0x00011006
+
+/* set the default clock gate to save power */
+DATA 4 0x020c4068 0x00C03F3F
+DATA 4 0x020c406c 0x0030FC03
+DATA 4 0x020c4070 0x0FFFC000
+DATA 4 0x020c4074 0x3FF00000
+DATA 4 0x020c4078 0x00FFF300
+DATA 4 0x020c407c 0x0F0000C3
+DATA 4 0x020c4080 0x000003FF
+
+/* enable AXI cache for VDOA/VPU/IPU */
+DATA 4 0x020e0010 0xF00000CF
+/* set IPU AXI-id0 Qos=0xf(bypass) AXI-id1 Qos=0x7 */
+DATA 4 0x020e0018 0x007F007F
+DATA 4 0x020e001c 0x007F007F
+
+/*
+ * Setup CCM_CCOSR register as follows:
+ *
+ * cko1_en  = 1	   --> CKO1 enabled
+ * cko1_div = 111  --> divide by 8
+ * cko1_sel = 1011 --> ahb_clk_root
+ *
+ * This sets CKO1 at ahb_clk_root/8 = 132/8 = 16.5 MHz
+ */
+DATA 4 0x020c4060 0x000000fb
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;
+}