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 protected]>
> ---
> 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
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