Subject: [PATCH] ARM: dts: am437x-gp-evm: Add vtt_fixed regulator

From: [email-masked] (Nishanth Menon)
Date: Tue, 22 Apr 2014 13:58:21 -0500

On 04/22/2014 01:52 PM, Dave Gerlach wrote:
> The VTT regulator for DDR3 termination on the am437x-gp-evm is
> controlled by a gpio. It is configured by the bootloader so here we
> define an always-on, fixed voltage regulator to hold the gpio.
> 
> Signed-off-by: Dave Gerlach <[email-masked]>
> ---
>  arch/arm/boot/dts/am437x-gp-evm.dts | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts
> index a055f7f..e68d12c 100644
> --- a/arch/arm/boot/dts/am437x-gp-evm.dts
> +++ b/arch/arm/boot/dts/am437x-gp-evm.dts
> @@ -27,6 +27,17 @@
>  		enable-active-high;
>  	};
>  
> +	vtt_fixed: fixedregulator-vtt {

Would you like to consider any explicit pinctrl here?

> +		compatible = "regulator-fixed";
> +		regulator-name = "vtt_fixed";
> +		regulator-min-microvolt = <3300000>;
> +		regulator-max-microvolt = <3300000>;
> +		regulator-always-on;
> +		regulator-boot-on;
> +		enable-active-high;
> +		gpio = <&gpio5 7 GPIO_ACTIVE_HIGH>;
> +	};
> +
>  	backlight {
>  		compatible = "pwm-backlight";
>  		pwms = <&ecap0 0 50000 PWM_POLARITY_INVERTED>;
> 

Do we still need https://patchwork.kernel.org/patch/3871201/ (prevent
hwmod from resetting GPIO5) ?

-- 
Regards,
Nishanth Menon