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 <[email protected]> > --- > 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>; >
