linux-kernel - Re: [PATCH] ARM: ux500: Provide SMSC911x fixed-regulator when not booting DT

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Message-ID: <20120824124750.GL32491@gmail.com>
Date:	Fri, 24 Aug 2012 13:47:51 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:	STEricsson_nomadik_linux@...t.st.com, linus.walleij@...ricsson.com,
	arnd@...db.de
Subject: Re: [PATCH] ARM: ux500: Provide SMSC911x fixed-regulator when not
 booting DT

Sorry, this patch appears to contain whitespace errors which I missed.

Please wait for v2.

On Fri, Aug 24, 2012 at 01:00:12PM +0100, Lee Jones wrote:
> 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.jones@...aro.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..11ddda7 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 de10f8f..0e904c8 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 a0f920d..4ace165 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
> 

-- 
Lee Jones
Linaro ST-Ericsson Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
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