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authorSoeren Moch <smoch@web.de>2019-10-03 23:50:34 +0200
committerHeiko Stuebner <heiko@sntech.de>2019-10-04 22:01:33 +0200
commit0990c5e7573098117c69651821647c228483e31b (patch)
treece99ee7da2da795de7ece17339a89678ef74d22b /arch/arm64
parentdt-bindings: arm: rockchip: fix Theobroma-System board bindings (diff)
downloadlinux-0990c5e7573098117c69651821647c228483e31b.tar.xz
linux-0990c5e7573098117c69651821647c228483e31b.zip
arm64: dts: rockchip: fix RockPro64 vdd-log regulator settings
The RockPro64 schematic [1] page 18 states a min voltage of 0.8V and a max voltage of 1.4V for the VDD_LOG pwm regulator. However, there is an additional note that the pwm parameter needs to be modified. From the schematics a voltage range of 0.8V to 1.7V can be calculated. Additional voltage measurements on the board show that this fix indeed leads to the correct voltage, while without this fix the voltage was set too high. [1] http://files.pine64.org/doc/rockpro64/rockpro64_v21-SCH.pdf Fixes: e4f3fb490967 ("arm64: dts: rockchip: add initial dts support for Rockpro64") Signed-off-by: Soeren Moch <smoch@web.de> Link: https://lore.kernel.org/r/20191003215036.15023-1-smoch@web.de Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Diffstat (limited to 'arch/arm64')
-rw-r--r--arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts
index c27d8a6ae1c5..98a5f323bc1d 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts
@@ -173,7 +173,7 @@
regulator-always-on;
regulator-boot-on;
regulator-min-microvolt = <800000>;
- regulator-max-microvolt = <1400000>;
+ regulator-max-microvolt = <1700000>;
vin-supply = <&vcc5v0_sys>;
};
};