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

[Vasily Khoruzhick]

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>
---
 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
-- 
2.24.0