[U-Boot] [PATCH 2/2] rockchip: rk3399: rockpro64: enable force power on reset workaround

[Kever Yang]

On 2019/11/28 下午2:14, Vasily Khoruzhick wrote:
> Rockpro64 doesn't boot reliably after soft reset, so let's force power on
> reset by asserting sysreset pin if we detected soft reset.
>
> Signed-off-by: Vasily Khoruzhick <anarsoul at gmail.com>
Reviewed-by: Kever Yang <kever.yang at rock-chips.com>

Thanks,
- Kever
> ---
>   arch/arm/dts/rk3399-rockpro64-u-boot.dtsi | 8 ++++++++
>   configs/rockpro64-rk3399_defconfig        | 1 +
>   2 files changed, 9 insertions(+)
>
> diff --git a/arch/arm/dts/rk3399-rockpro64-u-boot.dtsi b/arch/arm/dts/rk3399-rockpro64-u-boot.dtsi
> index 4648513ea9..bb94bcf7be 100644
> --- a/arch/arm/dts/rk3399-rockpro64-u-boot.dtsi
> +++ b/arch/arm/dts/rk3399-rockpro64-u-boot.dtsi
> @@ -6,11 +6,19 @@
>   #include "rk3399-u-boot.dtsi"
>   #include "rk3399-sdram-lpddr4-100.dtsi"
>   / {
> +	config {
> +		sysreset-gpio = <&gpio1 RK_PA6 GPIO_ACTIVE_HIGH>;
> +	};
> +
>   	chosen {
>   		u-boot,spl-boot-order = "same-as-spl", &sdmmc, &sdhci;
>   	};
>   };
>   
> +&gpio1  {
> +	u-boot,dm-pre-reloc;
> +};
> +
>   &vdd_center {
>   	regulator-min-microvolt = <950000>;
>   	regulator-max-microvolt = <950000>;
> diff --git a/configs/rockpro64-rk3399_defconfig b/configs/rockpro64-rk3399_defconfig
> index 49e27c91cb..d153ac5485 100644
> --- a/configs/rockpro64-rk3399_defconfig
> +++ b/configs/rockpro64-rk3399_defconfig
> @@ -1,6 +1,7 @@
>   CONFIG_ARM=y
>   CONFIG_ARCH_ROCKCHIP=y
>   CONFIG_SYS_TEXT_BASE=0x00200000
> +CONFIG_SPL_GPIO_SUPPORT=y
>   CONFIG_ROCKCHIP_RK3399=y
>   CONFIG_ENV_OFFSET=0x3F8000
>   CONFIG_TARGET_ROCKPRO64_RK3399=y