[U-Boot] [PATCH 2/7 v5] EXYNOS5: Implement board_poweroff for Thermal Management Unit

[Simon Glass]

On Mon, Jan 21, 2013 at 3:11 AM, Akshay Saraswat <akshay.s at samsung.com> wrote:
> Adding API in power for system shutdown when tripping value is reached
> in Exynos Thermal Management Unit.
>
> Signed-off-by: Akshay Saraswat <akshay.s at samsung.com>

Acked-by: Simon Glass <sjg at chromium.org>

> ---
> Changes since v4:
>         - Changed API name from power_shutdown to generic board_poweroff defined in commomn.h.
>
>  arch/arm/cpu/armv7/exynos/power.c        |   15 +++++++++++++++
>  arch/arm/include/asm/arch-exynos/power.h |    1 +
>  2 files changed, 16 insertions(+)
>
> diff --git a/arch/arm/cpu/armv7/exynos/power.c b/arch/arm/cpu/armv7/exynos/power.c
> index d4bce6d..1d26982 100644
> --- a/arch/arm/cpu/armv7/exynos/power.c
> +++ b/arch/arm/cpu/armv7/exynos/power.c
> @@ -95,3 +95,18 @@ void set_dp_phy_ctrl(unsigned int enable)
>         if (cpu_is_exynos5())
>                 exynos5_dp_phy_control(enable);
>  }
> +
> +/*
> + * This function never returns.
> + * When called this function makes system hang and PAD driving value high
> + * which in turn makes system power down.
> + */
> +void board_poweroff(void)
> +{
> +       struct exynos5_power *power =
> +               (struct exynos5_power *)samsung_get_base_power();
> +
> +       clrbits_le32(&power->ps_hold_control, POWER_PS_HOLD_CONTROL_DATA_HIGH);
> +
> +       hang();
> +}
> diff --git a/arch/arm/include/asm/arch-exynos/power.h b/arch/arm/include/asm/arch-exynos/power.h
> index d2fdb59..7463036 100644
> --- a/arch/arm/include/asm/arch-exynos/power.h
> +++ b/arch/arm/include/asm/arch-exynos/power.h
> @@ -863,5 +863,6 @@ void set_usbhost_phy_ctrl(unsigned int enable);
>  void set_dp_phy_ctrl(unsigned int enable);
>
>  #define EXYNOS_DP_PHY_ENABLE           (1 << 0)
> +#define POWER_PS_HOLD_CONTROL_DATA_HIGH         (1 << 8)
>
>  #endif
> --
> 1.7.9.5
>