arm: am437x: Introduce new board cm-t43

Add initial support for CM-T43, an AM437x based SoM.
This support includes: serial, MMC/eMMC, NAND, USB, ETH, I2C, GPIO, DRAM
detection.

Cc: Tom Rini <trini@konsulko.com>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>

6 files changed, 457 insertions, 0 deletions

diff --git a/board/compulab/cm_t43/Kconfig b/board/compulab/cm_t43/Kconfig
new file mode 100644
index 0000000..a191889
--- /dev/null
+++ b/board/compulab/cm_t43/Kconfig
@@ -0,0 +1,15 @@
+if TARGET_CM_T43
+
+config SYS_BOARD
+	default "cm_t43"
+
+config SYS_VENDOR
+	default "compulab"
+
+config SYS_SOC
+	default "am33xx"
+
+config SYS_CONFIG_NAME
+	default "cm_t43"
+
+endif
diff --git a/board/compulab/cm_t43/MAINTAINERS b/board/compulab/cm_t43/MAINTAINERS
new file mode 100644
index 0000000..951c370
--- /dev/null
+++ b/board/compulab/cm_t43/MAINTAINERS
@@ -0,0 +1,6 @@
+CM_T43 BOARD
+M:	Nikita Kiryanov <nikita@compulab.co.il>
+S:	Maintained
+F:	board/compulab/cm_t43/
+F:	include/configs/cm_t43.h
+F:	configs/cm_t43_defconfig
diff --git a/board/compulab/cm_t43/Makefile b/board/compulab/cm_t43/Makefile
new file mode 100644
index 0000000..3993689
--- /dev/null
+++ b/board/compulab/cm_t43/Makefile
@@ -0,0 +1,9 @@
+#
+# Makefile
+#
+# Copyright (C) 2015 Compulab, Ltd.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y	+= board.o mux.o
diff --git a/board/compulab/cm_t43/board.c b/board/compulab/cm_t43/board.c
new file mode 100644
index 0000000..4272c45
--- /dev/null
+++ b/board/compulab/cm_t43/board.c
@@ -0,0 +1,272 @@
+/*
+ * Copyright (C) 2015 Compulab, Ltd.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <i2c.h>
+#include <miiphy.h>
+#include <cpsw.h>
+#include <spl.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/mux.h>
+#include <asm/arch/ddr_defs.h>
+#include <asm/errno.h>
+#include <asm/gpio.h>
+#include <asm/emif.h>
+#include <power/pmic.h>
+#include <power/tps65218.h>
+#include "board.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
+
+#ifndef CONFIG_SKIP_LOWLEVEL_INIT
+
+const struct dpll_params dpll_mpu  = { 800,  24, 1,  -1, -1, -1, -1 };
+const struct dpll_params dpll_core = { 1000, 24, -1, -1, 10,  8,  4 };
+const struct dpll_params dpll_per  = { 960,  24, 5,  -1, -1, -1, -1 };
+const struct dpll_params dpll_ddr  = { 400,  23, 1,  -1,  1, -1, -1 };
+
+const struct ctrl_ioregs ioregs_ddr3 = {
+	.cm0ioctl		= DDR3_ADDRCTRL_IOCTRL_VALUE,
+	.cm1ioctl		= DDR3_ADDRCTRL_WD0_IOCTRL_VALUE,
+	.cm2ioctl		= DDR3_ADDRCTRL_WD1_IOCTRL_VALUE,
+	.dt0ioctl		= DDR3_DATA0_IOCTRL_VALUE,
+	.dt1ioctl		= DDR3_DATA0_IOCTRL_VALUE,
+	.dt2ioctrl		= DDR3_DATA0_IOCTRL_VALUE,
+	.dt3ioctrl		= DDR3_DATA0_IOCTRL_VALUE,
+	.emif_sdram_config_ext	= 0x0143,
+};
+
+/* EMIF DDR3 Configurations are different for production AM43X GP EVMs */
+struct emif_regs ddr3_emif_regs = {
+	.sdram_config			= 0x638413B2,
+	.ref_ctrl			= 0x00000C30,
+	.sdram_tim1			= 0xEAAAD4DB,
+	.sdram_tim2			= 0x266B7FDA,
+	.sdram_tim3			= 0x107F8678,
+	.read_idle_ctrl			= 0x00050000,
+	.zq_config			= 0x50074BE4,
+	.temp_alert_config		= 0x0,
+	.emif_ddr_phy_ctlr_1		= 0x0E004008,
+	.emif_ddr_ext_phy_ctrl_1	= 0x08020080,
+	.emif_ddr_ext_phy_ctrl_2	= 0x00000066,
+	.emif_ddr_ext_phy_ctrl_3	= 0x00000091,
+	.emif_ddr_ext_phy_ctrl_4	= 0x000000B9,
+	.emif_ddr_ext_phy_ctrl_5	= 0x000000E6,
+	.emif_rd_wr_exec_thresh		= 0x80000405,
+	.emif_prio_class_serv_map	= 0x80000001,
+	.emif_connect_id_serv_1_map	= 0x80000094,
+	.emif_connect_id_serv_2_map	= 0x00000000,
+	.emif_cos_config		= 0x000FFFFF
+};
+
+const u32 ext_phy_ctrl_const_base_ddr3[] = {
+	0x00000000,
+	0x00000044,
+	0x00000044,
+	0x00000046,
+	0x00000046,
+	0x00000000,
+	0x00000059,
+	0x00000077,
+	0x00000093,
+	0x000000A8,
+	0x00000000,
+	0x00000019,
+	0x00000037,
+	0x00000053,
+	0x00000068,
+	0x00000000,
+	0x0,
+	0x0,
+	0x40000000,
+	0x08102040
+};
+
+void emif_get_ext_phy_ctrl_const_regs(const u32 **regs, u32 *size)
+{
+	*regs = ext_phy_ctrl_const_base_ddr3;
+	*size = ARRAY_SIZE(ext_phy_ctrl_const_base_ddr3);
+}
+
+const struct dpll_params *get_dpll_ddr_params(void)
+{
+	return &dpll_ddr;
+}
+
+const struct dpll_params *get_dpll_mpu_params(void)
+{
+	return &dpll_mpu;
+}
+
+const struct dpll_params *get_dpll_core_params(void)
+{
+	return &dpll_core;
+}
+
+const struct dpll_params *get_dpll_per_params(void)
+{
+	return &dpll_per;
+}
+
+static void enable_vtt_regulator(void)
+{
+	u32 temp;
+
+	writel(GPIO_CTRL_ENABLEMODULE, AM33XX_GPIO5_BASE + OMAP_GPIO_CTRL);
+	writel(GPIO_SETDATAOUT(7), AM33XX_GPIO5_BASE + OMAP_GPIO_SETDATAOUT);
+	temp = readl(AM33XX_GPIO5_BASE + OMAP_GPIO_OE);
+	temp = temp & ~(GPIO_OE_ENABLE(7));
+	writel(temp, AM33XX_GPIO5_BASE + OMAP_GPIO_OE);
+}
+
+void sdram_init(void)
+{
+	unsigned long ram_size;
+
+	enable_vtt_regulator();
+	config_ddr(0, &ioregs_ddr3, NULL, NULL, &ddr3_emif_regs, 0);
+	ram_size = get_ram_size((long int *)CONFIG_SYS_SDRAM_BASE, 0x80000000);
+	if (ram_size == 0x80000000 ||
+	    ram_size == 0x40000000 ||
+	    ram_size == 0x20000000)
+		return;
+
+	ddr3_emif_regs.sdram_config = 0x638453B2;
+	config_ddr(0, &ioregs_ddr3, NULL, NULL, &ddr3_emif_regs, 0);
+	ram_size = get_ram_size((long int *)CONFIG_SYS_SDRAM_BASE, 0x80000000);
+	if (ram_size == 0x08000000)
+		return;
+
+	hang();
+}
+#endif
+
+/* setup board specific PMIC */
+int power_init_board(void)
+{
+	struct pmic *p;
+
+	power_tps65218_init(I2C_PMIC);
+	p = pmic_get("TPS65218_PMIC");
+	if (p && !pmic_probe(p))
+		puts("PMIC:  TPS65218\n");
+
+	return 0;
+}
+
+int board_init(void)
+{
+	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
+	gpmc_init();
+	set_i2c_pin_mux();
+	i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED, CONFIG_SYS_OMAP24_I2C_SLAVE);
+	i2c_probe(TPS65218_CHIP_PM);
+
+	return 0;
+}
+
+#ifdef CONFIG_DRIVER_TI_CPSW
+
+static void cpsw_control(int enabled)
+{
+	return;
+}
+
+static struct cpsw_slave_data cpsw_slaves[] = {
+	{
+		.slave_reg_ofs	= 0x208,
+		.sliver_reg_ofs	= 0xd80,
+		.phy_addr	= 0,
+		.phy_if		= PHY_INTERFACE_MODE_RGMII,
+	},
+	{
+		.slave_reg_ofs	= 0x308,
+		.sliver_reg_ofs	= 0xdc0,
+		.phy_addr	= 1,
+		.phy_if		= PHY_INTERFACE_MODE_RGMII,
+	},
+};
+
+static struct cpsw_platform_data cpsw_data = {
+	.mdio_base		= CPSW_MDIO_BASE,
+	.cpsw_base		= CPSW_BASE,
+	.mdio_div		= 0xff,
+	.channels		= 8,
+	.cpdma_reg_ofs		= 0x800,
+	.slaves			= 2,
+	.slave_data		= cpsw_slaves,
+	.ale_reg_ofs		= 0xd00,
+	.ale_entries		= 1024,
+	.host_port_reg_ofs	= 0x108,
+	.hw_stats_reg_ofs	= 0x900,
+	.bd_ram_ofs		= 0x2000,
+	.mac_control		= (1 << 5),
+	.control		= cpsw_control,
+	.host_port_num		= 0,
+	.version		= CPSW_CTRL_VERSION_2,
+};
+
+#define GPIO_PHY1_RST		170
+#define GPIO_PHY2_RST		168
+
+int board_phy_config(struct phy_device *phydev)
+{
+	unsigned short val;
+
+	/* introduce tx clock delay */
+	phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x5);
+	val = phy_read(phydev, MDIO_DEVAD_NONE, 0x1e);
+	val |= 0x0100;
+	phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, val);
+
+	if (phydev->drv->config)
+		return phydev->drv->config(phydev);
+
+	return 0;
+}
+
+static void board_phy_init(void)
+{
+	set_mdio_pin_mux();
+	writel(0x40003, 0x44e10a74); /* Mux pin as clkout2 */
+	writel(0x10006, 0x44df4108); /* Select EXTDEV as clock source */
+	writel(0x4, 0x44df2e60); /* Set EXTDEV as MNbypass */
+
+	/* For revision A */
+	writel(0x2000009, 0x44df2e6c);
+	writel(0x38a, 0x44df2e70);
+
+	mdelay(10);
+
+	gpio_request(GPIO_PHY1_RST, "phy1_rst");
+	gpio_request(GPIO_PHY2_RST, "phy2_rst");
+	gpio_direction_output(GPIO_PHY1_RST, 0);
+	gpio_direction_output(GPIO_PHY2_RST, 0);
+	mdelay(2);
+
+	gpio_set_value(GPIO_PHY1_RST, 1);
+	gpio_set_value(GPIO_PHY2_RST, 1);
+	mdelay(2);
+}
+
+int board_eth_init(bd_t *bis)
+{
+	int rv;
+
+	set_rgmii_pin_mux();
+	writel(RGMII_MODE_ENABLE | RGMII_INT_DELAY, &cdev->miisel);
+	board_phy_init();
+
+	rv = cpsw_register(&cpsw_data);
+	if (rv < 0)
+		printf("Error %d registering CPSW switch\n", rv);
+
+	return rv;
+}
+#endif
diff --git a/board/compulab/cm_t43/board.h b/board/compulab/cm_t43/board.h
new file mode 100644
index 0000000..b585db0
--- /dev/null
+++ b/board/compulab/cm_t43/board.h
@@ -0,0 +1,12 @@
+/*
+ * Copyright (C) 2015 Compulab, Ltd.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _BOARD_H_
+#define _BOARD_H_
+void set_i2c_pin_mux(void);
+void set_mdio_pin_mux(void);
+void set_rgmii_pin_mux(void);
+#endif
diff --git a/board/compulab/cm_t43/mux.c b/board/compulab/cm_t43/mux.c
new file mode 100644
index 0000000..d4bf4b2
--- /dev/null
+++ b/board/compulab/cm_t43/mux.c
@@ -0,0 +1,143 @@
+/*
+ * Copyright (C) 2015 Compulab, Ltd.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/mux.h>
+#include "board.h"
+
+static struct module_pin_mux rgmii1_pin_mux[] = {
+	{OFFSET(mii1_txen),  MODE(2)},
+	{OFFSET(mii1_txd3),  MODE(2)},
+	{OFFSET(mii1_txd2),  MODE(2)},
+	{OFFSET(mii1_txd1),  MODE(2)},
+	{OFFSET(mii1_txd0),  MODE(2)},
+	{OFFSET(mii1_txclk), MODE(2)},
+	{OFFSET(mii1_rxdv),  MODE(2) | RXACTIVE | PULLDOWN_EN},
+	{OFFSET(mii1_rxclk), MODE(2) | RXACTIVE | PULLDOWN_EN},
+	{OFFSET(mii1_rxd3),  MODE(2) | RXACTIVE | PULLDOWN_EN},
+	{OFFSET(mii1_rxd2),  MODE(2) | RXACTIVE | PULLDOWN_EN},
+	{OFFSET(mii1_rxd1),  MODE(2) | RXACTIVE | PULLDOWN_EN},
+	{OFFSET(mii1_rxd0),  MODE(2) | RXACTIVE | PULLDOWN_EN},
+	{-1},
+};
+
+static struct module_pin_mux rgmii2_pin_mux[] = {
+	{OFFSET(gpmc_a0),  MODE(2)}, /* txen */
+	{OFFSET(gpmc_a2),  MODE(2)}, /* txd3 */
+	{OFFSET(gpmc_a3),  MODE(2)}, /* txd2 */
+	{OFFSET(gpmc_a4),  MODE(2)}, /* txd1 */
+	{OFFSET(gpmc_a5),  MODE(2)}, /* txd0 */
+	{OFFSET(gpmc_a6),  MODE(2)}, /* txclk */
+	{OFFSET(gpmc_a1),  MODE(2) | RXACTIVE | PULLDOWN_EN}, /* rxvd */
+	{OFFSET(gpmc_a7),  MODE(2) | RXACTIVE | PULLDOWN_EN}, /* rxclk */
+	{OFFSET(gpmc_a8),  MODE(2) | RXACTIVE | PULLDOWN_EN}, /* rxd3 */
+	{OFFSET(gpmc_a9),  MODE(2) | RXACTIVE | PULLDOWN_EN}, /* rxd2 */
+	{OFFSET(gpmc_a10), MODE(2) | RXACTIVE | PULLDOWN_EN}, /* rxd1 */
+	{OFFSET(gpmc_a11), MODE(2) | RXACTIVE | PULLUP_EN},   /* rxd0 */
+	{-1},
+};
+
+static struct module_pin_mux mdio_pin_mux[] = {
+	{OFFSET(mdio_data), (MODE(0) | PULLUP_EN | RXACTIVE)},
+	{OFFSET(mdio_clk),  (MODE(0) | PULLUP_EN)},
+	{-1},
+};
+
+static struct module_pin_mux uart0_pin_mux[] = {
+	{OFFSET(uart0_rxd), (MODE(0) | PULLUP_EN | RXACTIVE  | SLEWCTRL)},
+	{OFFSET(uart0_txd), (MODE(0) | PULLUDDIS | PULLUP_EN | SLEWCTRL)},
+	{-1},
+};
+
+static struct module_pin_mux mmc0_pin_mux[] = {
+	{OFFSET(mmc0_clk),  (MODE(0) | PULLUDDIS | RXACTIVE)},
+	{OFFSET(mmc0_cmd),  (MODE(0) | PULLUP_EN | RXACTIVE)},
+	{OFFSET(mmc0_dat0), (MODE(0) | PULLUP_EN | RXACTIVE)},
+	{OFFSET(mmc0_dat1), (MODE(0) | PULLUP_EN | RXACTIVE)},
+	{OFFSET(mmc0_dat2), (MODE(0) | PULLUP_EN | RXACTIVE)},
+	{OFFSET(mmc0_dat3), (MODE(0) | PULLUP_EN | RXACTIVE)},
+	{-1},
+};
+
+static struct module_pin_mux i2c_pin_mux[] = {
+	{OFFSET(i2c0_sda),  (MODE(0) | PULLUP_EN | RXACTIVE | SLEWCTRL)},
+	{OFFSET(i2c0_scl),  (MODE(0) | PULLUP_EN | RXACTIVE | SLEWCTRL)},
+	{OFFSET(spi2_sclk), (MODE(1) | PULLUP_EN | RXACTIVE | SLEWCTRL)},
+	{OFFSET(spi2_cs0),  (MODE(1) | PULLUP_EN | RXACTIVE | SLEWCTRL)},
+	{-1},
+};
+
+static struct module_pin_mux nand_pin_mux[] = {
+	{OFFSET(gpmc_ad0),	(MODE(0) | PULLUDDIS | RXACTIVE)},
+	{OFFSET(gpmc_ad1),	(MODE(0) | PULLUDDIS | RXACTIVE)},
+	{OFFSET(gpmc_ad2),	(MODE(0) | PULLUDDIS | RXACTIVE)},
+	{OFFSET(gpmc_ad3),	(MODE(0) | PULLUDDIS | RXACTIVE)},
+	{OFFSET(gpmc_ad4),	(MODE(0) | PULLUDDIS | RXACTIVE)},
+	{OFFSET(gpmc_ad5),	(MODE(0) | PULLUDDIS | RXACTIVE)},
+	{OFFSET(gpmc_ad6),	(MODE(0) | PULLUDDIS | RXACTIVE)},
+	{OFFSET(gpmc_ad7),	(MODE(0) | PULLUDDIS | RXACTIVE)},
+	{OFFSET(gpmc_wait0),	(MODE(0) | PULLUP_EN | RXACTIVE)},
+	{OFFSET(gpmc_wpn),	(MODE(0) | PULLUP_EN)},
+	{OFFSET(gpmc_csn0),	(MODE(0) | PULLUP_EN)},
+	{OFFSET(gpmc_wen),	(MODE(0) | PULLDOWN_EN)},
+	{OFFSET(gpmc_oen_ren),	(MODE(0) | PULLDOWN_EN)},
+	{OFFSET(gpmc_advn_ale),	(MODE(0) | PULLDOWN_EN)},
+	{OFFSET(gpmc_be0n_cle),	(MODE(0) | PULLDOWN_EN)},
+	{-1},
+};
+
+static struct module_pin_mux emmc_pin_mux[] = {
+	{OFFSET(gpmc_csn1), (MODE(2) | PULLUDDIS | RXACTIVE)}, /* EMMC_CLK */
+	{OFFSET(gpmc_csn2), (MODE(2) | PULLUP_EN | RXACTIVE)}, /* EMMC_CMD */
+	{OFFSET(gpmc_ad8),  (MODE(2) | PULLUP_EN | RXACTIVE)}, /* EMMC_DAT0 */
+	{OFFSET(gpmc_ad9),  (MODE(2) | PULLUP_EN | RXACTIVE)}, /* EMMC_DAT1 */
+	{OFFSET(gpmc_ad10), (MODE(2) | PULLUP_EN | RXACTIVE)}, /* EMMC_DAT2 */
+	{OFFSET(gpmc_ad11), (MODE(2) | PULLUP_EN | RXACTIVE)}, /* EMMC_DAT3 */
+	{OFFSET(gpmc_ad12), (MODE(2) | PULLUP_EN | RXACTIVE)}, /* EMMC_DAT4 */
+	{OFFSET(gpmc_ad13), (MODE(2) | PULLUP_EN | RXACTIVE)}, /* EMMC_DAT5 */
+	{OFFSET(gpmc_ad14), (MODE(2) | PULLUP_EN | RXACTIVE)}, /* EMMC_DAT6 */
+	{OFFSET(gpmc_ad15), (MODE(2) | PULLUP_EN | RXACTIVE)}, /* EMMC_DAT7 */
+	{-1},
+};
+
+static struct module_pin_mux spi_flash_pin_mux[] = {
+	{OFFSET(spi0_d0),   (MODE(0) | RXACTIVE | PULLUDEN)},
+	{OFFSET(spi0_d1),   (MODE(0) | RXACTIVE | PULLUDEN)},
+	{OFFSET(spi0_cs0),  (MODE(0) | RXACTIVE | PULLUDEN)},
+	{OFFSET(spi0_sclk), (MODE(0) | RXACTIVE | PULLUDEN)},
+	{-1},
+};
+
+void set_uart_mux_conf(void)
+{
+	configure_module_pin_mux(uart0_pin_mux);
+}
+
+void set_mdio_pin_mux(void)
+{
+	configure_module_pin_mux(mdio_pin_mux);
+}
+
+void set_rgmii_pin_mux(void)
+{
+	configure_module_pin_mux(rgmii1_pin_mux);
+	configure_module_pin_mux(rgmii2_pin_mux);
+}
+
+void set_mux_conf_regs(void)
+{
+	configure_module_pin_mux(mmc0_pin_mux);
+	configure_module_pin_mux(emmc_pin_mux);
+	configure_module_pin_mux(i2c_pin_mux);
+	configure_module_pin_mux(spi_flash_pin_mux);
+	configure_module_pin_mux(nand_pin_mux);
+}
+
+void set_i2c_pin_mux(void)
+{
+	configure_module_pin_mux(i2c_pin_mux);
+}