On the RK3399-Q7, we want to trigger a full platform reset (so the various software stacks supported don't have to deal with the same complexities over and over again) in case that anything other than a power-on reset occurred.
To do so, this defines the /config/sysreset-gpio property and has it point to a GPIO that will perform a power-on reset of the entire platform.
Signed-off-by: Philipp Tomsich philipp.tomsich@theobroma-systems.com Tested-by: Klaus Goger klaus.goger@theobroma-systems.com ---
Changes in v2: None
arch/arm/dts/rk3399-puma.dtsi | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/arch/arm/dts/rk3399-puma.dtsi b/arch/arm/dts/rk3399-puma.dtsi index 96bd4fe..314214c 100644 --- a/arch/arm/dts/rk3399-puma.dtsi +++ b/arch/arm/dts/rk3399-puma.dtsi @@ -16,6 +16,7 @@ u-boot,mmc-env-offset = <0x4000>; /* @ 16KB */ u-boot,efi-partition-entries-offset = <0x200000>; /* 2MB */ u-boot,boot-led = "module_led"; + sysreset-gpio = <&gpio1 RK_PA6 GPIO_ACTIVE_HIGH>; };
chosen { @@ -550,6 +551,10 @@ status = "okay"; };
+&gpio1 { + u-boot,dm-pre-reloc; +}; + &gpio3 { u-boot,dm-pre-reloc; };