board: Add support for B&R T-Series Motherboard

Adds support for Bernecker & Rainer Industrieelektronik GmbH T-Series
Motherboard, using TI's AM3352 SoC.

Most of code is derived from TI's AM335x_EVM

Signed-off-by: Hannes Petermaier <oe5hpm@oevsv.at>

2 files changed, 238 insertions, 0 deletions

diff --git a/board/BuR/common/bur_common.h b/board/BuR/common/bur_common.h
new file mode 100644
index 0000000..15225b0
--- /dev/null
+++ b/board/BuR/common/bur_common.h
@@ -0,0 +1,22 @@
+/*
+ * bur_comon.h
+ *
+ * common board information header for B&R boards
+ *
+ * Copyright (C) 2013 Hannes Petermaier <oe5hpm@oevsv.at>
+ * Bernecker & Rainer Industrieelektronik GmbH - http://www.br-automation.com
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _BUR_COMMON_H_
+#define _BUR_COMMON_H_
+
+void blink(u32 blinks, u32 intervall, u32 pin);
+void pmicsetup(u32 mpupll);
+void enable_uart0_pin_mux(void);
+void enable_i2c0_pin_mux(void);
+void enable_board_pin_mux(void);
+int board_eth_init(bd_t *bis);
+
+#endif
diff --git a/board/BuR/common/common.c b/board/BuR/common/common.c
new file mode 100644
index 0000000..6d187ea
--- /dev/null
+++ b/board/BuR/common/common.c
@@ -0,0 +1,216 @@
+/*
+ * common.c
+ *
+ * common board functions for B&R boards
+ *
+ * Copyright (C) 2013 Hannes Petermaier <oe5hpm@oevsv.at>
+ * Bernecker & Rainer Industrieelektronik GmbH - http://www.br-automation.com
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ *
+ */
+
+#include <common.h>
+#include <errno.h>
+#include <spl.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/omap.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/gpio.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/io.h>
+#include <asm/gpio.h>
+#include <i2c.h>
+#include <miiphy.h>
+#include <cpsw.h>
+#include <power/tps65217.h>
+#include "bur_common.h"
+
+static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
+/* --------------------------------------------------------------------------*/
+void blink(u32 blinks, u32 intervall, u32 pin)
+{
+	gpio_direction_output(pin, 0);
+	int val = 0;
+
+	do {
+		val ^= 0x01;
+		gpio_set_value(pin, val);
+		mdelay(intervall);
+	} while (blinks--);
+
+	gpio_set_value(pin, 0);
+}
+#ifdef CONFIG_SPL_BUILD
+void pmicsetup(u32 mpupll)
+{
+	int mpu_vdd;
+	int usb_cur_lim;
+
+	/* setup I2C */
+	enable_i2c0_pin_mux();
+	i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED, CONFIG_SYS_OMAP24_I2C_SLAVE);
+
+	if (i2c_probe(TPS65217_CHIP_PM)) {
+		puts("PMIC (0x24) not found! skip further initalization.\n");
+		return;
+	}
+
+	/* Get the frequency which is defined by device fuses */
+	dpll_mpu_opp100.m = am335x_get_efuse_mpu_max_freq(cdev);
+	printf("detected max. frequency: %d - ", dpll_mpu_opp100.m);
+
+	if (0 != mpupll) {
+		dpll_mpu_opp100.m = MPUPLL_M_1000;
+		printf("retuning MPU-PLL to: %d MHz.\n", dpll_mpu_opp100.m);
+	} else {
+		puts("ok.\n");
+	}
+	/*
+	 * Increase USB current limit to 1300mA or 1800mA and set
+	 * the MPU voltage controller as needed.
+	 */
+	if (dpll_mpu_opp100.m == MPUPLL_M_1000) {
+		usb_cur_lim = TPS65217_USB_INPUT_CUR_LIMIT_1800MA;
+		mpu_vdd = TPS65217_DCDC_VOLT_SEL_1325MV;
+	} else {
+		usb_cur_lim = TPS65217_USB_INPUT_CUR_LIMIT_1300MA;
+		mpu_vdd = TPS65217_DCDC_VOLT_SEL_1275MV;
+	}
+
+	if (tps65217_reg_write(TPS65217_PROT_LEVEL_NONE, TPS65217_POWER_PATH,
+			       usb_cur_lim, TPS65217_USB_INPUT_CUR_LIMIT_MASK))
+		puts("tps65217_reg_write failure\n");
+
+	/* Set DCDC3 (CORE) voltage to 1.125V */
+	if (tps65217_voltage_update(TPS65217_DEFDCDC3,
+				    TPS65217_DCDC_VOLT_SEL_1125MV)) {
+		puts("tps65217_voltage_update failure\n");
+		return;
+	}
+
+	/* Set CORE Frequencies to OPP100 */
+	do_setup_dpll(&dpll_core_regs, &dpll_core_opp100);
+
+	/* Set DCDC2 (MPU) voltage */
+	if (tps65217_voltage_update(TPS65217_DEFDCDC2, mpu_vdd)) {
+		puts("tps65217_voltage_update failure\n");
+		return;
+	}
+
+	/* Set LDO3 to 1.8V */
+	if (tps65217_reg_write(TPS65217_PROT_LEVEL_2,
+			       TPS65217_DEFLS1,
+			       TPS65217_LDO_VOLTAGE_OUT_1_8,
+			       TPS65217_LDO_MASK))
+		puts("tps65217_reg_write failure\n");
+	/* Set LDO4 to 3.3V */
+	if (tps65217_reg_write(TPS65217_PROT_LEVEL_2,
+			       TPS65217_DEFLS2,
+			       TPS65217_LDO_VOLTAGE_OUT_3_3,
+			       TPS65217_LDO_MASK))
+		puts("tps65217_reg_write failure\n");
+
+	/* Set MPU Frequency to what we detected now that voltages are set */
+	do_setup_dpll(&dpll_mpu_regs, &dpll_mpu_opp100);
+}
+
+void set_uart_mux_conf(void)
+{
+	enable_uart0_pin_mux();
+}
+
+void set_mux_conf_regs(void)
+{
+	enable_board_pin_mux();
+}
+
+#endif /* CONFIG_SPL_BUILD */
+
+#if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) || \
+	(defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD))
+static void cpsw_control(int enabled)
+{
+	/* VTP can be added here */
+	return;
+}
+
+/* describing port offsets of TI's CPSW block */
+static struct cpsw_slave_data cpsw_slaves[] = {
+	{
+		.slave_reg_ofs	= 0x208,
+		.sliver_reg_ofs	= 0xd80,
+		.phy_id		= 0,
+	},
+	{
+		.slave_reg_ofs	= 0x308,
+		.sliver_reg_ofs	= 0xdc0,
+		.phy_id		= 1,
+	},
+};
+
+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			= 1,
+	.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,
+};
+#endif /* CONFIG_DRIVER_TI_CPSW, ... */
+
+#if defined(CONFIG_DRIVER_TI_CPSW)
+
+int board_eth_init(bd_t *bis)
+{
+	int rv = 0;
+	uint8_t mac_addr[6];
+	uint32_t mac_hi, mac_lo;
+
+	/* try reading mac address from efuse */
+	mac_lo = readl(&cdev->macid0l);
+	mac_hi = readl(&cdev->macid0h);
+	mac_addr[0] = mac_hi & 0xFF;
+	mac_addr[1] = (mac_hi & 0xFF00) >> 8;
+	mac_addr[2] = (mac_hi & 0xFF0000) >> 16;
+	mac_addr[3] = (mac_hi & 0xFF000000) >> 24;
+	mac_addr[4] = mac_lo & 0xFF;
+	mac_addr[5] = (mac_lo & 0xFF00) >> 8;
+
+#if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) || \
+	(defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD))
+	if (!getenv("ethaddr")) {
+		printf("<ethaddr> not set. Validating first E-fuse MAC ... ");
+
+		if (is_valid_ether_addr(mac_addr)) {
+			printf("using: %02X:%02X:%02X:%02X:%02X:%02X.\n",
+			       mac_addr[0], mac_addr[1], mac_addr[2],
+			       mac_addr[3], mac_addr[4], mac_addr[5]
+				);
+			eth_setenv_enetaddr("ethaddr", mac_addr);
+		}
+	}
+	writel(MII_MODE_ENABLE, &cdev->miisel);
+	cpsw_slaves[0].phy_if = PHY_INTERFACE_MODE_MII;
+	cpsw_slaves[1].phy_if =	PHY_INTERFACE_MODE_MII;
+
+	rv = cpsw_register(&cpsw_data);
+	if (rv < 0) {
+		printf("Error %d registering CPSW switch\n", rv);
+		return 0;
+	}
+#endif /* CONFIG_DRIVER_TI_CPSW, ... */
+	return rv;
+}
+#endif /* CONFIG_DRIVER_TI_CPSW */