[PATCH] ARM: dts: Add mask-tpm-reset DT node to the exynos5800-peach-pi

[Naveen Krishna Ch]

Hello Vikas,

On 14 July 2014 17:36, Vikas Sajjan <vikas.sajjan at samsung.com> wrote:
> The mask-tpm-reset GPIO is used by the kernel to prevent the TPM from
> being reset across sleep/wake.  If we don't set it to anything then
> the TPM will be reset.  U-Boot will detect this as invalid
> and will reset the system on resume time. This GPIO can always be low
> and not hurt anything.  It will get pulled back high again during a
> normal warm reset when it will default back to an input.
>
> To properly preserve the TPM state across suspend/resume and to make
> the chrome U-Boot happy, properly set the GPIO to mask the
> reset to the TPM.
>
> Signed-off-by: Vikas Sajjan <vikas.sajjan at samsung.com>

After merging Linus Walleij's for-next of pinctrl git.

S2R on Exynos5800 based Peach PI works fine.

Tested-by: Naveen Krishna Chatradhi <ch.naveen at samsung.com>

> ---
>  arch/arm/boot/dts/exynos5800-peach-pi.dts |   12 ++++++++++++
>  1 file changed, 12 insertions(+)
>
> diff --git a/arch/arm/boot/dts/exynos5800-peach-pi.dts b/arch/arm/boot/dts/exynos5800-peach-pi.dts
> index 28f2a25..caa8952 100644
> --- a/arch/arm/boot/dts/exynos5800-peach-pi.dts
> +++ b/arch/arm/boot/dts/exynos5800-peach-pi.dts
> @@ -209,6 +209,18 @@
>
>
>  &pinctrl_0 {
> +       pinctrl-names = "default";
> +       pinctrl-0 = <&mask_tpm_reset>;
> +
> +       /* We need GPX0_6 to be low at sleep time; just keep it low always */
> +       mask_tpm_reset: mask-tpm-reset {
> +               samsung,pins = "gpx0-6";
> +               samsung,pin-function = <1>;
> +               samsung,pin-pud = <0>;
> +               samsung,pin-drv = <0>;
> +               samsung,pin-val = <0>;
> +       };
> +
>         max98091_irq: max98091-irq {
>                 samsung,pins = "gpx0-2";
>                 samsung,pin-function = <0>;
> --
> 1.7.9.5
>
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