The SMSC911x Ethernet chip requires a fixed-regulator in order to
function correctly. We have previously provided a means to obtain
this during a Device Tree boot, however nothing has been put into
place when booting with a non-DT kernel. This patch aims to change
that.
Signed-off-by: Lee Jones <lee.jo...@linaro.org>
---
arch/arm/mach-ux500/board-mop500-regulators.c | 17 +++++++++++++++++
arch/arm/mach-ux500/board-mop500-regulators.h | 1 +
arch/arm/mach-ux500/board-mop500.c | 21 +++++++++++++++++++++
arch/arm/mach-ux500/board-mop500.h | 2 +-
4 files changed, 40 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-ux500/board-mop500-regulators.c
b/arch/arm/mach-ux500/board-mop500-regulators.c
index 52426a4..139f31e 100644
--- a/arch/arm/mach-ux500/board-mop500-regulators.c
+++ b/arch/arm/mach-ux500/board-mop500-regulators.c
@@ -13,6 +13,23 @@
#include <linux/regulator/ab8500.h>
#include "board-mop500-regulators.h"
+#ifdef CONFIG_REGULATOR_FIXED_VOLTAGE
+static struct regulator_consumer_supply gpio_en_3v3_consumers[] = {
+ REGULATOR_SUPPLY("vdd33a", "smsc911x.0"),
+};
+
+struct regulator_init_data gpio_en_3v3_regulator = {
+ .constraints = {
+ .name = "EN-3V3",
+ .min_uV = 3300000,
+ .max_uV = 3300000,
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ },
+ .num_consumer_supplies = ARRAY_SIZE(gpio_en_3v3_consumers),
+ .consumer_supplies = gpio_en_3v3_consumers,
+};
+#endif
+
/*
* TPS61052 regulator
*/
diff --git a/arch/arm/mach-ux500/board-mop500-regulators.h
b/arch/arm/mach-ux500/board-mop500-regulators.h
index 9499215..78a0642 100644
--- a/arch/arm/mach-ux500/board-mop500-regulators.h
+++ b/arch/arm/mach-ux500/board-mop500-regulators.h
@@ -18,5 +18,6 @@ extern struct ab8500_regulator_reg_init
ab8500_regulator_reg_init[AB8500_NUM_REGULATOR_REGISTERS];
extern struct regulator_init_data ab8500_regulators[AB8500_NUM_REGULATORS];
extern struct regulator_init_data tps61052_regulator;
+extern struct regulator_init_data gpio_en_3v3_regulator;
#endif
diff --git a/arch/arm/mach-ux500/board-mop500.c
b/arch/arm/mach-ux500/board-mop500.c
index 42e1759..c7f0973 100644
--- a/arch/arm/mach-ux500/board-mop500.c
+++ b/arch/arm/mach-ux500/board-mop500.c
@@ -23,6 +23,7 @@
#include <linux/spi/spi.h>
#include <linux/mfd/abx500/ab8500.h>
#include <linux/regulator/ab8500.h>
+#include <linux/regulator/fixed.h>
#include <linux/mfd/tc3589x.h>
#include <linux/mfd/tps6105x.h>
#include <linux/mfd/abx500/ab8500-gpio.h>
@@ -75,6 +76,25 @@ static struct platform_device snowball_led_dev = {
},
};
+#ifdef CONFIG_REGULATOR_FIXED_VOLTAGE
+static struct fixed_voltage_config snowball_gpio_en_3v3_data = {
+ .supply_name = "EN-3V3",
+ .gpio = SNOWBALL_EN_3V3_ETH_GPIO,
+ .microvolts = 3300000,
+ .enable_high = 1,
+ .init_data = &gpio_en_3v3_regulator,
+ .startup_delay = 5000, /* 1200us */
+};
+
+static struct platform_device snowball_gpio_en_3v3_regulator_dev = {
+ .name = "reg-fixed-voltage",
+ .id = 1,
+ .dev = {
+ .platform_data = &snowball_gpio_en_3v3_data,
+ },
+};
+#endif
+
static struct ab8500_gpio_platform_data ab8500_gpio_pdata = {
.gpio_base = MOP500_AB8500_PIN_GPIO(1),
.irq_base = MOP500_AB8500_VIR_GPIO_IRQ_BASE,
@@ -585,6 +605,7 @@ static struct platform_device *snowball_platform_devs[]
__initdata = {
&snowball_led_dev,
&snowball_key_dev,
&snowball_sbnet_dev,
+ &snowball_gpio_en_3v3_regulator_dev,
};
static void __init mop500_init_machine(void)
diff --git a/arch/arm/mach-ux500/board-mop500.h
b/arch/arm/mach-ux500/board-mop500.h
index 9e9dd5a..d3a02d5 100644
--- a/arch/arm/mach-ux500/board-mop500.h
+++ b/arch/arm/mach-ux500/board-mop500.h
@@ -13,6 +13,7 @@
#include <linux/amba/mmci.h>
/* Snowball specific GPIO assignments, this board has no GPIO expander */
+#define SNOWBALL_EN_3V3_ETH_GPIO 26
#define SNOWBALL_ACCEL_INT1_GPIO 163
#define SNOWBALL_ACCEL_INT2_GPIO 164
#define SNOWBALL_MAGNET_DRDY_GPIO 165
@@ -76,7 +77,6 @@
#define SNOWBALL_PM_GPIO4_GPIO MOP500_AB8500_PIN_GPIO(4) /*
SYSCLKREQ6/GPIO4 */
#define SNOWBALL_EN_3V6_GPIO MOP500_AB8500_PIN_GPIO(16) /*
PWMOUT3/GPIO16 */
#define SNOWBALL_PME_ETH_GPIO MOP500_AB8500_PIN_GPIO(24) /*
SYSCLKREQ7/GPIO24 */
-#define SNOWBALL_EN_3V3_ETH_GPIO MOP500_AB8500_PIN_GPIO(26) /*
GPIO26 */
struct device;
struct i2c_board_info;
--
1.7.9.5
--
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