diff options
| author | Paul Kocialkowski <[email protected]> | 2024-09-26 20:31:08 +0200 |
|---|---|---|
| committer | Tom Rini <[email protected]> | 2025-01-10 18:56:15 -0600 |
| commit | d7882f556efb11f00fbb93ce13ef2df297b6b1c7 (patch) | |
| tree | ac2d1359cb89dc92e9e92e962caf04a08a716d2b | |
| parent | c99039867468468dbd27cd594be6ef66c37be56c (diff) | |
rockchip: rk3399-roc-pc: Hook sysreset gpio to enable full reset
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.
Without this patch, reading from the micro sd slot fails after a reset.
With this mechanism, U-Boot is able to boot from it reliably.
Signed-off-by: Paul Kocialkowski <[email protected]>
Reviewed-by: Quentin Schulz <[email protected]>
| -rw-r--r-- | arch/arm/dts/rk3399-roc-pc-u-boot.dtsi | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/dts/rk3399-roc-pc-u-boot.dtsi b/arch/arm/dts/rk3399-roc-pc-u-boot.dtsi index aecf7dbe383..883d399a06a 100644 --- a/arch/arm/dts/rk3399-roc-pc-u-boot.dtsi +++ b/arch/arm/dts/rk3399-roc-pc-u-boot.dtsi @@ -7,6 +7,10 @@ #include "rk3399-sdram-lpddr4-100.dtsi" / { + config { + sysreset-gpio = <&gpio1 RK_PA6 GPIO_ACTIVE_HIGH>; + }; + vcc_hub_en: vcc_hub_en-regulator { compatible = "regulator-fixed"; enable-active-high; @@ -36,6 +40,10 @@ bootph-pre-ram; }; +&gpio1 { + bootph-pre-ram; +}; + &spi1 { flash@0 { bootph-pre-ram; |