davinci: DA850/OMAP-L138 EVM: add support for TPS65070 PMIC

This patch adds support for using the TPS65070 PMIC found
on the DA850/OMAP-L138 EVM.

It defines the power rail consumer mapping and registers the
the I2C based PMIC as a board device.

The power rail constraints are derived from the maxmimum and
minimum recommended operating condition values of the respective
consumers derived from section 5.2 of the OMAP-L138 datasheet.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

1 files changed, 153 insertions, 0 deletions

diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c
index 16c8cceb36c6..a34df64bea2a 100644
--- a/arch/arm/mach-davinci/board-da850-evm.c
+++ b/arch/arm/mach-davinci/board-da850-evm.c
@@ -23,6 +23,7 @@
 #include <linux/mtd/nand.h>
 #include <linux/mtd/partitions.h>
 #include <linux/mtd/physmap.h>
+#include <linux/regulator/machine.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -251,6 +252,153 @@ static void __init da850_evm_init_nor(void)
         iounmap(aemif_addr);
 }
 
+/* TPS65070 voltage regulator support */
+
+/* 3.3V */
+struct regulator_consumer_supply tps65070_dcdc1_consumers[] = {
+        {
+                .supply = "usb0_vdda33",
+        },
+        {
+                .supply = "usb1_vdda33",
+        },
+};
+
+/* 3.3V or 1.8V */
+struct regulator_consumer_supply tps65070_dcdc2_consumers[] = {
+        {
+                .supply = "dvdd3318_a",
+        },
+        {
+                .supply = "dvdd3318_b",
+        },
+        {
+                .supply = "dvdd3318_c",
+        },
+};
+
+/* 1.2V */
+struct regulator_consumer_supply tps65070_dcdc3_consumers[] = {
+        {
+                .supply = "cvdd",
+        },
+};
+
+/* 1.8V LDO */
+struct regulator_consumer_supply tps65070_ldo1_consumers[] = {
+        {
+                .supply = "sata_vddr",
+        },
+        {
+                .supply = "usb0_vdda18",
+        },
+        {
+                .supply = "usb1_vdda18",
+        },
+        {
+                .supply = "ddr_dvdd18",
+        },
+};
+
+/* 1.2V LDO */
+struct regulator_consumer_supply tps65070_ldo2_consumers[] = {
+        {
+                .supply = "sata_vdd",
+        },
+        {
+                .supply = "pll0_vdda",
+        },
+        {
+                .supply = "pll1_vdda",
+        },
+        {
+                .supply = "usbs_cvdd",
+        },
+        {
+                .supply = "vddarnwa1",
+        },
+};
+
+struct regulator_init_data tps65070_regulator_data[] = {
+        /* dcdc1 */
+        {
+                .constraints = {
+                        .min_uV = 3150000,
+                        .max_uV = 3450000,
+                        .valid_ops_mask = (REGULATOR_CHANGE_VOLTAGE |
+                                REGULATOR_CHANGE_STATUS),
+                        .boot_on = 1,
+                },
+                .num_consumer_supplies = ARRAY_SIZE(tps65070_dcdc1_consumers),
+                .consumer_supplies = tps65070_dcdc1_consumers,
+        },
+
+        /* dcdc2 */
+        {
+                .constraints = {
+                        .min_uV = 1710000,
+                        .max_uV = 3450000,
+                        .valid_ops_mask = (REGULATOR_CHANGE_VOLTAGE |
+                                REGULATOR_CHANGE_STATUS),
+                        .boot_on = 1,
+                },
+                .num_consumer_supplies = ARRAY_SIZE(tps65070_dcdc2_consumers),
+                .consumer_supplies = tps65070_dcdc2_consumers,
+        },
+
+        /* dcdc3 */
+        {
+                .constraints = {
+                        .min_uV = 950000,
+                        .max_uV = 1320000,
+                        .valid_ops_mask = (REGULATOR_CHANGE_VOLTAGE |
+                                REGULATOR_CHANGE_STATUS),
+                        .boot_on = 1,
+                },
+                .num_consumer_supplies = ARRAY_SIZE(tps65070_dcdc3_consumers),
+                .consumer_supplies = tps65070_dcdc3_consumers,
+        },
+
+        /* ldo1 */
+        {
+                .constraints = {
+                        .min_uV = 1710000,
+                        .max_uV = 1890000,
+                        .valid_ops_mask = (REGULATOR_CHANGE_VOLTAGE |
+                                REGULATOR_CHANGE_STATUS),
+                        .boot_on = 1,
+                },
+                .num_consumer_supplies = ARRAY_SIZE(tps65070_ldo1_consumers),
+                .consumer_supplies = tps65070_ldo1_consumers,
+        },
+
+        /* ldo2 */
+        {
+                .constraints = {
+                        .min_uV = 1140000,
+                        .max_uV = 1320000,
+                        .valid_ops_mask = (REGULATOR_CHANGE_VOLTAGE |
+                                REGULATOR_CHANGE_STATUS),
+                        .boot_on = 1,
+                },
+                .num_consumer_supplies = ARRAY_SIZE(tps65070_ldo2_consumers),
+                .consumer_supplies = tps65070_ldo2_consumers,
+        },
+};
+
+static struct i2c_board_info __initdata da850evm_tps65070_info[] = {
+        {
+                I2C_BOARD_INFO("tps6507x", 0x48),
+                .platform_data = &tps65070_regulator_data[0],
+        },
+};
+
+static int __init pmic_tps65070_init(void)
+{
+        return i2c_register_board_info(1, da850evm_tps65070_info,
+                                        ARRAY_SIZE(da850evm_tps65070_info));
+}
+
 #if defined(CONFIG_MTD_PHYSMAP) || \
     defined(CONFIG_MTD_PHYSMAP_MODULE)
 #define HAS_NOR 1
@@ -275,6 +423,11 @@ static __init void da850_evm_init(void)
         struct davinci_soc_info *soc_info = &davinci_soc_info;
         int ret;
 
+        ret = pmic_tps65070_init();
+        if (ret)
+                pr_warning("da850_evm_init: TPS65070 PMIC init failed: %d\n",
+                                ret);
+
         ret = da8xx_pinmux_setup(da850_nand_pins);
         if (ret)
                 pr_warning("da850_evm_init: nand mux setup failed: %d\n",