Hi Paul,
On 9/26/24 8:31 PM, Paul Kocialkowski wrote:
From: Paul Kocialkowski contact@paulk.fr
The reset mechanism used by Linux to reset the SoC is known to only partially reset the logic. A mechanism is implemented in rk3399_force_power_on_reset to use a GPIO connected to the PMIC's over-temperature (OTP) reset pin, which fully resets all logic.
Hook the associated GPIO where the function expects it to enable this reset mechanism and avoid any possible side-effect of partially-reset units.
Signed-off-by: Paul Kocialkowski contact@paulk.fr
arch/arm/dts/rk3399-rockpro64-u-boot.dtsi | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/arch/arm/dts/rk3399-rockpro64-u-boot.dtsi b/arch/arm/dts/rk3399-rockpro64-u-boot.dtsi index 43b67991fe5a..cd84269dab48 100644 --- a/arch/arm/dts/rk3399-rockpro64-u-boot.dtsi +++ b/arch/arm/dts/rk3399-rockpro64-u-boot.dtsi @@ -7,6 +7,10 @@ #include "rk3399-sdram-lpddr4-100.dtsi"
/ {
- config {
sysreset-gpio = <&gpio1 RK_PA6 GPIO_ACTIVE_HIGH>;- };
We've been using this on RK3399 Puma for a while already, and a similar routing can be observed on both boards, therefore:
Reviewed-by: Quentin Schulz quentin.schulz@cherry.de
Thanks! Quentin