Initial Toradex Colibri T20 L4T R15 support.

1 files changed, 279 insertions, 0 deletions

diff --git a/arch/arm/mach-tegra/board-colibri_t20-power.c b/arch/arm/mach-tegra/board-colibri_t20-power.c
new file mode 100644
index 000000000000..e5c1d9bf5716
--- /dev/null
+++ b/arch/arm/mach-tegra/board-colibri_t20-power.c
@@ -0,0 +1,279 @@
+/*
+ * Copyright (C) 2011 Toradex, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ * 02111-1307, USA
+ */
+
+#include <linux/gpio.h>
+#include <linux/i2c.h>
+#include <linux/io.h>
+#include <linux/mfd/tps6586x.h>
+//
+#include <linux/pda_power.h>
+//
+#include <linux/platform_device.h>
+#include <linux/regulator/machine.h>
+//
+#include <linux/resource.h>
+//
+
+#include <mach/iomap.h>
+#include <mach/irqs.h>
+
+#include <generated/mach-types.h>
+
+#include "gpio-names.h"
+#include "fuse.h"
+#include "pm.h"
+#include "wakeups-t2.h"
+#include "board.h"
+#include "board-colibri_t20.h"
+
+#define PMC_CTRL		0x0
+#define PMC_CTRL_INTR_LOW	(1 << 17)
+
+static struct regulator_consumer_supply tps658621_sm0_supply[] = {
+	REGULATOR_SUPPLY("vdd_core", NULL),
+};
+
+static struct regulator_consumer_supply tps658621_sm1_supply[] = {
+	REGULATOR_SUPPLY("vdd_cpu", NULL),
+};
+
+static struct regulator_consumer_supply tps658621_sm2_supply[] = {
+	REGULATOR_SUPPLY("vdd_sm2", NULL),
+};
+
+static struct regulator_consumer_supply tps658621_ldo0_supply[] = {
+	REGULATOR_SUPPLY("vdd_ldo0", NULL),
+	REGULATOR_SUPPLY("p_cam_avdd", NULL),
+};
+
+static struct regulator_consumer_supply tps658621_ldo1_supply[] = {
+	REGULATOR_SUPPLY("vdd_ldo1", NULL),
+	REGULATOR_SUPPLY("avdd_pll", NULL),
+};
+
+static struct regulator_consumer_supply tps658621_ldo2_supply[] = {
+	REGULATOR_SUPPLY("vdd_ldo2", NULL),
+	REGULATOR_SUPPLY("vdd_rtc", NULL),
+	REGULATOR_SUPPLY("vdd_aon", NULL),
+};
+
+static struct regulator_consumer_supply tps658621_ldo3_supply[] = {
+	/* unused */
+	REGULATOR_SUPPLY("vdd_ldo3", NULL),
+	REGULATOR_SUPPLY("avdd_lvds", NULL),
+};
+
+static struct regulator_consumer_supply tps658621_ldo4_supply[] = {
+	REGULATOR_SUPPLY("vdd_ldo4", NULL),
+	REGULATOR_SUPPLY("avdd_osc", NULL),
+	REGULATOR_SUPPLY("vddio_sys", "panjit_touch"),
+};
+
+static struct regulator_consumer_supply tps658621_ldo5_supply[] = {
+	REGULATOR_SUPPLY("vdd_ldo5", NULL),
+	REGULATOR_SUPPLY("avdd_usb", NULL),
+	REGULATOR_SUPPLY("avdd_usb_pll", NULL),
+//	REGULATOR_SUPPLY("vcore_mmc", "sdhci-tegra.1"),
+	REGULATOR_SUPPLY("vmmc", "sdhci-tegra.3"),
+	/* fuse via separate GPIO FET (FUSE_ENABLE_N) */
+	REGULATOR_SUPPLY("vdd_fuse", NULL),
+};
+
+static struct regulator_consumer_supply tps658621_ldo6_supply[] = {
+	/* Off after boot, needs to be explicitly turned on! */
+	REGULATOR_SUPPLY("vdd_ldo6", NULL),
+	REGULATOR_SUPPLY("avdd_vdac", NULL),
+};
+
+static struct regulator_consumer_supply tps658621_ldo7_supply[] = {
+	REGULATOR_SUPPLY("vdd_ldo7", NULL),
+	REGULATOR_SUPPLY("avdd_hdmi", NULL),
+};
+
+static struct regulator_consumer_supply tps658621_ldo8_supply[] = {
+	REGULATOR_SUPPLY("vdd_ldo8", NULL),
+	REGULATOR_SUPPLY("avdd_hdmi_pll", NULL),
+};
+
+static struct regulator_consumer_supply tps658621_ldo9_supply[] = {
+	REGULATOR_SUPPLY("vdd_ldo9", NULL),
+	REGULATOR_SUPPLY("avdd_2v85", NULL),
+	REGULATOR_SUPPLY("vdd_ddr_rx", NULL),
+//	REGULATOR_SUPPLY("avdd_amp", NULL),
+};
+
+static struct tps6586x_settings sm0_config = {
+	.sm_pwm_mode	= PWM_DEFAULT_VALUE,
+	.slew_rate	= SLEW_RATE_3520UV_PER_SEC,
+};
+
+static struct tps6586x_settings sm1_config = {
+	/*
+	 * Current TPS6586x is known for having a voltage glitch if current load
+	 * changes from low to high in auto PWM/PFM mode for CPU's Vdd line.
+	 */
+	.sm_pwm_mode	= PWM_ONLY,
+	.slew_rate	= SLEW_RATE_3520UV_PER_SEC,
+};
+
+#define REGULATOR_INIT(_id, _minmv, _maxmv, on, config)			\
+	{								\
+		.constraints = {					\
+			.min_uV = (_minmv)*1000,			\
+			.max_uV = (_maxmv)*1000,			\
+			.valid_modes_mask = (REGULATOR_MODE_NORMAL |	\
+					     REGULATOR_MODE_STANDBY),	\
+			.valid_ops_mask = (REGULATOR_CHANGE_MODE |	\
+					   REGULATOR_CHANGE_STATUS |	\
+					   REGULATOR_CHANGE_VOLTAGE),	\
+			.always_on = on,				\
+			.apply_uV = 1,					\
+		},							\
+		.num_consumer_supplies = ARRAY_SIZE(tps658621_##_id##_supply),\
+		.consumer_supplies = tps658621_##_id##_supply,		\
+		.driver_data = config,					\
+	}
+
+#define ON	1
+#define OFF	0
+
+static struct regulator_init_data sm0_data = REGULATOR_INIT(sm0, 725, 1500, ON, &sm0_config);
+static struct regulator_init_data sm1_data = REGULATOR_INIT(sm1, 725, 1500, ON, &sm1_config);
+static struct regulator_init_data sm2_data = REGULATOR_INIT(sm2, 1700, 2475, ON, NULL);
+static struct regulator_init_data ldo0_data = REGULATOR_INIT(ldo0, 1200, 3300, OFF, NULL);
+static struct regulator_init_data ldo1_data = REGULATOR_INIT(ldo1, 725, 1500, ON, NULL);
+static struct regulator_init_data ldo2_data = REGULATOR_INIT(ldo2, 725, 1500, OFF, NULL);
+static struct regulator_init_data ldo3_data = REGULATOR_INIT(ldo3, 1250, 3300, OFF, NULL);
+static struct regulator_init_data ldo4_data = REGULATOR_INIT(ldo4, 1700, 2475, ON, NULL);
+static struct regulator_init_data ldo5_data = REGULATOR_INIT(ldo5, 1250, 3300, ON, NULL);
+static struct regulator_init_data ldo6_data = REGULATOR_INIT(ldo6, 1250, 3300, OFF, NULL);
+static struct regulator_init_data ldo7_data = REGULATOR_INIT(ldo7, 1250, 3300, OFF, NULL);
+static struct regulator_init_data ldo8_data = REGULATOR_INIT(ldo8, 1250, 3300, OFF, NULL);
+static struct regulator_init_data ldo9_data = REGULATOR_INIT(ldo9, 1250, 3300, OFF, NULL);
+
+static struct tps6586x_rtc_platform_data rtc_data = {
+	.irq = TEGRA_NR_IRQS + TPS6586X_INT_RTC_ALM1,
+	.start = {
+		.year	= 2009,
+		.month	= 1,
+		.day	= 1,
+	},
+	.cl_sel = TPS6586X_RTC_CL_SEL_1_5PF /* use lowest (external 20pF cap) */
+};
+
+#define TPS_REG(_id, _data)			\
+	{					\
+		.id = TPS6586X_ID_##_id,	\
+		.name = "tps6586x-regulator",	\
+		.platform_data = _data,		\
+	}
+
+static struct tps6586x_subdev_info tps_devs[] = {
+	TPS_REG(SM_0, &sm0_data),
+	TPS_REG(SM_1, &sm1_data),
+	TPS_REG(SM_2, &sm2_data),
+	TPS_REG(LDO_0, &ldo0_data),
+	TPS_REG(LDO_1, &ldo1_data),
+	TPS_REG(LDO_2, &ldo2_data),
+	TPS_REG(LDO_3, &ldo3_data),
+	TPS_REG(LDO_4, &ldo4_data),
+	TPS_REG(LDO_5, &ldo5_data),
+	TPS_REG(LDO_6, &ldo6_data),
+	TPS_REG(LDO_7, &ldo7_data),
+	TPS_REG(LDO_8, &ldo8_data),
+	TPS_REG(LDO_9, &ldo9_data),
+	{
+		.id		= 0,
+		.name		= "tps6586x-rtc",
+		.platform_data	= &rtc_data,
+	},
+};
+
+static struct tps6586x_platform_data tps_platform = {
+	.irq_base	= TPS6586X_INT_BASE,
+	.num_subdevs	= ARRAY_SIZE(tps_devs),
+	.subdevs	= tps_devs,
+	.gpio_base	= TPS6586X_GPIO_BASE,
+};
+
+static struct i2c_board_info __initdata colibri_t20_regulators[] = {
+	{
+		I2C_BOARD_INFO("tps6586x", 0x34),
+			.irq		= INT_EXTERNAL_PMU,
+			.platform_data	= &tps_platform,
+	},
+	{
+		/* LM95245 temperature sensor on PWR_I2C_SCL/SDA */
+		I2C_BOARD_INFO("lm95241", 0x4c),
+			.type = "lm95241",
+	},
+};
+
+static void colibri_t20_board_suspend(int lp_state, enum suspend_stage stg)
+{
+	if ((lp_state == TEGRA_SUSPEND_LP1) && (stg == TEGRA_SUSPEND_BEFORE_CPU))
+		tegra_console_uart_suspend();
+}
+
+static void colibri_t20_board_resume(int lp_state, enum resume_stage stg)
+{
+	if ((lp_state == TEGRA_SUSPEND_LP1) && (stg == TEGRA_RESUME_AFTER_CPU))
+		tegra_console_uart_resume();
+}
+
+static struct tegra_suspend_platform_data colibri_t20_suspend_data = {
+	/*
+	 * Check power on time and crystal oscillator start time
+	 * for appropriate settings.
+	 */
+	.cpu_timer	= 2000,
+	.cpu_off_timer	= 100,
+	.suspend_mode	= TEGRA_SUSPEND_LP0,
+	.core_timer	= 0x7e7e,
+	.core_off_timer = 0xf,
+	.corereq_high	= false,
+	.sysclkreq_high	= true,
+	.board_suspend	= colibri_t20_board_suspend,
+	.board_resume	= colibri_t20_board_resume,
+};
+
+int __init colibri_t20_regulator_init(void)
+{
+	void __iomem *pmc = IO_ADDRESS(TEGRA_PMC_BASE);
+	void __iomem *chip_id = IO_ADDRESS(TEGRA_APB_MISC_BASE) + 0x804;
+	u32 pmc_ctrl;
+	u32 minor;
+
+	minor = (readl(chip_id) >> 16) & 0xf;
+	/* A03 (but not A03p) chips do not support LP0 */
+	if (minor == 3 && !(tegra_spare_fuse(18) || tegra_spare_fuse(19)))
+		colibri_t20_suspend_data.suspend_mode = TEGRA_SUSPEND_LP1;
+
+	/* configure the power management controller to trigger PMU
+	 * interrupts when low */
+	pmc_ctrl = readl(pmc + PMC_CTRL);
+	writel(pmc_ctrl | PMC_CTRL_INTR_LOW, pmc + PMC_CTRL);
+
+	i2c_register_board_info(4, colibri_t20_regulators, ARRAY_SIZE(colibri_t20_regulators));
+
+//	regulator_has_full_constraints();
+
+	tegra_init_suspend(&colibri_t20_suspend_data);
+
+	return 0;
+}