board: ti: am43xx: add support for AM43xx Industrial Development Kit

AM43xx Industrial Development Kit is a new board
based on AM437x line of SoCs. Targetted at Industrial
Automation applications, it comes with EtherCAT, motor
control and other goodies.

Thanks to James Doublesin for all the help.

Cc: James Doublesin <doublesin@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

3 files changed, 115 insertions, 19 deletions

diff --git a/board/ti/am43xx/board.c b/board/ti/am43xx/board.c
index 7f1f980..6703670 100644
--- a/board/ti/am43xx/board.c
+++ b/board/ti/am43xx/board.c
@@ -21,6 +21,7 @@
 #include "board.h"
 #include <power/pmic.h>
 #include <power/tps65218.h>
+#include <power/tps62362.h>
 #include <miiphy.h>
 #include <cpsw.h>
 
@@ -138,6 +139,10 @@ const struct dpll_params epos_evm_dpll_ddr[NUM_CRYSTAL_FREQ] = {
 const struct dpll_params gp_evm_dpll_ddr = {
 		50, 2, 1, -1, 2, -1, -1};
 
+static const struct dpll_params idk_dpll_ddr = {
+	400, 23, 1, -1, 2, -1, -1
+};
+
 const struct ctrl_ioregs ioregs_lpddr2 = {
 	.cm0ioctl		= LPDDR2_ADDRCTRL_IOCTRL_VALUE,
 	.cm1ioctl		= LPDDR2_ADDRCTRL_WD0_IOCTRL_VALUE,
@@ -282,6 +287,32 @@ static const struct emif_regs ddr3_sk_emif_regs_400Mhz = {
 	.emif_cos_config		= 0x000FFFFF
 };
 
+static const struct emif_regs ddr3_idk_emif_regs_400Mhz = {
+	.sdram_config			= 0x61a11b32,
+	.sdram_config2			= 0x00000000,
+	.ref_ctrl			= 0x00000c30,
+	.sdram_tim1			= 0xeaaad4db,
+	.sdram_tim2			= 0x266b7fda,
+	.sdram_tim3			= 0x107f8678,
+	.read_idle_ctrl			= 0x00050000,
+	.zq_config			= 0x50074be4,
+	.temp_alert_config		= 0x00000000,
+	.emif_ddr_phy_ctlr_1		= 0x00008009,
+	.emif_ddr_ext_phy_ctrl_1	= 0x08020080,
+	.emif_ddr_ext_phy_ctrl_2	= 0x00000040,
+	.emif_ddr_ext_phy_ctrl_3	= 0x0000003e,
+	.emif_ddr_ext_phy_ctrl_4	= 0x00000051,
+	.emif_ddr_ext_phy_ctrl_5	= 0x00000051,
+	.emif_rd_wr_lvl_rmp_win		= 0x00000000,
+	.emif_rd_wr_lvl_rmp_ctl		= 0x00000000,
+	.emif_rd_wr_lvl_ctl		= 0x00000000,
+	.emif_rd_wr_exec_thresh		= 0x00000405,
+	.emif_prio_class_serv_map	= 0x00000000,
+	.emif_connect_id_serv_1_map	= 0x00000000,
+	.emif_connect_id_serv_2_map	= 0x00000000,
+	.emif_cos_config		= 0x00ffffff
+};
+
 /*
  * get_sys_clk_index : returns the index of the sys_clk read from
  *			ctrl status register. This value is either
@@ -309,6 +340,8 @@ const struct dpll_params *get_dpll_ddr_params(void)
 		return &epos_evm_dpll_ddr[ind];
 	else if (board_is_gpevm() || board_is_sk())
 		return &gp_evm_dpll_ddr;
+	else if (board_is_idk())
+		return &idk_dpll_ddr;
 
 	printf(" Board '%s' not supported\n", am43xx_board_name);
 	return NULL;
@@ -364,24 +397,14 @@ const struct dpll_params *get_dpll_per_params(void)
 	return &dpll_per[ind];
 }
 
-void scale_vcores(void)
+void scale_vcores_generic(u32 m)
 {
-	const struct dpll_params *mpu_params;
 	int mpu_vdd;
-	struct am43xx_board_id header;
-
-	enable_i2c0_pin_mux();
-	i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED, CONFIG_SYS_OMAP24_I2C_SLAVE);
-	if (read_eeprom(&header) < 0)
-		puts("Could not get board ID.\n");
-
-	/* Get the frequency */
-	mpu_params = get_dpll_mpu_params();
 
 	if (i2c_probe(TPS65218_CHIP_PM))
 		return;
 
-	switch (mpu_params->m) {
+	switch (m) {
 	case 1000:
 		mpu_vdd = TPS65218_DCDC_VOLT_SEL_1330MV;
 		break;
@@ -405,17 +428,71 @@ void scale_vcores(void)
 	/* Set DCDC1 (CORE) voltage to 1.1V */
 	if (tps65218_voltage_update(TPS65218_DCDC1,
 				    TPS65218_DCDC_VOLT_SEL_1100MV)) {
-		puts("tps65218_voltage_update failure\n");
+		printf("%s failure\n", __func__);
 		return;
 	}
 
 	/* Set DCDC2 (MPU) voltage */
 	if (tps65218_voltage_update(TPS65218_DCDC2, mpu_vdd)) {
-		puts("tps65218_voltage_update failure\n");
+		printf("%s failure\n", __func__);
 		return;
 	}
 }
 
+void scale_vcores_idk(u32 m)
+{
+	int mpu_vdd;
+
+	if (i2c_probe(TPS62362_I2C_ADDR))
+		return;
+
+	switch (m) {
+	case 1000:
+		mpu_vdd = TPS62362_DCDC_VOLT_SEL_1330MV;
+		break;
+	case 800:
+		mpu_vdd = TPS62362_DCDC_VOLT_SEL_1260MV;
+		break;
+	case 720:
+		mpu_vdd = TPS62362_DCDC_VOLT_SEL_1200MV;
+		break;
+	case 600:
+		mpu_vdd = TPS62362_DCDC_VOLT_SEL_1100MV;
+		break;
+	case 300:
+		mpu_vdd = TPS62362_DCDC_VOLT_SEL_1330MV;
+		break;
+	default:
+		puts("Unknown MPU clock, not scaling\n");
+		return;
+	}
+
+	/* Set VDD_MPU voltage */
+	if (tps62362_voltage_update(TPS62362_SET3, mpu_vdd)) {
+		printf("%s failure\n", __func__);
+		return;
+	}
+}
+
+void scale_vcores(void)
+{
+	const struct dpll_params *mpu_params;
+	struct am43xx_board_id header;
+
+	enable_i2c0_pin_mux();
+	i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED, CONFIG_SYS_OMAP24_I2C_SLAVE);
+	if (read_eeprom(&header) < 0)
+		puts("Could not get board ID.\n");
+
+	/* Get the frequency */
+	mpu_params = get_dpll_mpu_params();
+
+	if (board_is_idk())
+		scale_vcores_idk(mpu_params->m);
+	else
+		scale_vcores_generic(mpu_params->m);
+}
+
 void set_uart_mux_conf(void)
 {
 	enable_uart0_pin_mux();
@@ -465,6 +542,9 @@ void sdram_init(void)
 	} else if (board_is_sk()) {
 		config_ddr(400, &ioregs_ddr3, NULL, NULL,
 			   &ddr3_sk_emif_regs_400Mhz, 0);
+	} else if (board_is_idk()) {
+		config_ddr(400, &ioregs_ddr3, NULL, NULL,
+			   &ddr3_idk_emif_regs_400Mhz, 0);
 	}
 }
 #endif
@@ -474,10 +554,17 @@ 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");
+	if (board_is_idk()) {
+		power_tps62362_init(I2C_PMIC);
+		p = pmic_get("TPS62362");
+		if (p && !pmic_probe(p))
+			puts("PMIC:  TPS62362\n");
+	} else {
+		power_tps65218_init(I2C_PMIC);
+		p = pmic_get("TPS65218_PMIC");
+		if (p && !pmic_probe(p))
+			puts("PMIC:  TPS65218\n");
+	}
 
 	return 0;
 }
@@ -634,6 +721,10 @@ int board_eth_init(bd_t *bis)
 		cpsw_slaves[0].phy_if = PHY_INTERFACE_MODE_RGMII;
 		cpsw_slaves[0].phy_addr = 4;
 		cpsw_slaves[1].phy_addr = 5;
+	} else if (board_is_idk()) {
+		writel(RGMII_MODE_ENABLE, &cdev->miisel);
+		cpsw_slaves[0].phy_if = PHY_INTERFACE_MODE_RGMII;
+		cpsw_slaves[0].phy_addr = 0;
 	} else {
 		writel(RGMII_MODE_ENABLE, &cdev->miisel);
 		cpsw_slaves[0].phy_if = PHY_INTERFACE_MODE_RGMII;
diff --git a/board/ti/am43xx/board.h b/board/ti/am43xx/board.h
index 8e12191..eb9493e 100644
--- a/board/ti/am43xx/board.h
+++ b/board/ti/am43xx/board.h
@@ -53,6 +53,11 @@ static inline int board_is_sk(void)
 	return !strncmp(am43xx_board_name, "AM43__SK", HDR_NAME_LEN);
 }
 
+static inline int board_is_idk(void)
+{
+	return !strncmp(am43xx_board_name, "AM43_IDK", HDR_NAME_LEN);
+}
+
 static inline int board_is_evm_14_or_later(void)
 {
 	return (board_is_gpevm() && strncmp("1.4", am43xx_board_rev, 3) <= 0);
diff --git a/board/ti/am43xx/mux.c b/board/ti/am43xx/mux.c
index a670b0b..510477d 100644
--- a/board/ti/am43xx/mux.c
+++ b/board/ti/am43xx/mux.c
@@ -131,7 +131,7 @@ void enable_board_pin_mux(void)
 #if defined(CONFIG_NAND)
 		configure_module_pin_mux(nand_pin_mux);
 #endif
-	} else if (board_is_sk()) {
+	} else if (board_is_sk() || board_is_idk()) {
 		configure_module_pin_mux(rgmii1_pin_mux);
 #if defined(CONFIG_NAND)
 		printf("Error: NAND flash not present on this board\n");