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>; + }; + smbios { compatible = "u-boot,sysinfo-smbios"; smbios { @@ -32,6 +36,10 @@ bootph-pre-ram; };
+&gpio1 { + bootph-pre-ram; +}; + &sdhci { cap-mmc-highspeed; mmc-ddr-1_8v;