arm64: dts: rockchip: correct voltage selector on Firefly-RK3399

Bug-Debian: https://bugs.debian.org/900799
Origin: https://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip.git/patch/?id=710e8c4a54be82ee8a97324e7b4330bf191e08bf

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
and also matches the value used in the vendor kernel.

Fixes: 171582e00db1 ("arm64: dts: rockchip: add support for firefly-rk3399 board")
Cc: stable@vger.kernel.org
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Gbp-Pq: Topic bugfix/arm64
Gbp-Pq: Name dts-rockchip-correct-voltage-selector-firefly-RK3399.patch

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-firefly.dts b/arch/arm64/boot/dts/rockchip/rk3399-firefly.dts
index dc45ec372ada46bd4b97ba24456b4fe3dac93679..4785ca750ff1165f6b0b26cc823b12b79f6d71ee 100644 (file)
--- a/arch/arm64/boot/dts/rockchip/rk3399-firefly.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-firefly.dts
@@ -455,7 +455,7 @@
        vdd_cpu_b: regulator@40 {
                compatible = "silergy,syr827";
                reg = <0x40>;
-               fcs,suspend-voltage-selector = <0>;
+               fcs,suspend-voltage-selector = <1>;
                regulator-name = "vdd_cpu_b";
                regulator-min-microvolt = <712500>;
                regulator-max-microvolt = <1500000>;