On 06/04/2018 07:15 PM, Heinrich Schuchardt wrote:
> Without this patch the Firefly-RK3399 board boot process hangs after these
> lines:
>
> fan53555-regulator 0-0040: FAN53555 Option[8] Rev[1] Detected!
> fan53555-reg: supplied by vcc_sys
> vcc1v8_s3: supplied by vcc_1v8
>
> Blacklisting driver fan53555 allows booting.
>
> The device tree uses a value of fcs,suspend-voltage-selector different to
> any other board.
>
> Changing this setting to the usual value is sufficient to enable booting.
>
> Signed-off-by: Heinrich Schuchardt <xypron.glpk@xxxxxx>
> ---
> arch/arm64/boot/dts/rockchip/rk3399-firefly.dts | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/rockchip/rk3399-firefly.dts b/arch/arm64/boot/dts/rockchip/rk3399-firefly.dts
> index 4f28628aa091..50940ef844a7 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3399-firefly.dts
> +++ b/arch/arm64/boot/dts/rockchip/rk3399-firefly.dts
> @@ -458,7 +458,7 @@
> vdd_cpu_b: regulator@40 {
> compatible = "silergy,syr827";
> reg = <0x40>;
> - fcs,suspend-voltage-selector = <0>;
> + fcs,suspend-voltage-selector = <1>;
The same value <1> is used in the legacy kernel:
https://github.com/rockchip-linux/kernel/blob/release-4.4/arch/arm64/boot/dts/rockchip/rk3399-firefly-linux.dts
vdd_cpu_b: syr827@40 {
compatible = "silergy,syr827";
reg = <0x40>;
vin-supply = <&vcc5v0_sys>;
regulator-compatible = "fan53555-reg";
regulator-name = "vdd_cpu_b";
regulator-min-microvolt = <712500>;
regulator-max-microvolt = <1500000>;
regulator-ramp-delay = <1000>;
vsel-gpios = <&gpio1 18 GPIO_ACTIVE_HIGH>;
fcs,suspend-voltage-selector = <1>;
regulator-always-on;
regulator-boot-on;
regulator-initial-state = <3>;
regulator-state-mem {
regulator-off-in-suspend;
};
};
Best regards
Heinrich
> regulator-name = "vdd_cpu_b";
> regulator-min-microvolt = <712500>;
> regulator-max-microvolt = <1500000>;
>
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