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ARM64: dts: gru: fix up the pwm regulator node

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This attempts to model commit 063e65397a ("ARM64: dts: rk3399-tb: fix
up the pwm regulator node").

Note that instead of putting a duty cycle of 25000 ns (40 kHz) I've set
a duty cycle of 1667 ns (600 kHz) because I think that's what the TRM
says.

Change-Id: Ifc209eddb20122feec96c5e86f7a14da7d74eb3f
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
This commit is contained in:
Douglas Anderson
2016-04-01 13:48:41 -07:00
committed by Caesar Wang
parent 7a2cde0816
commit 66fd42ba64
1 changed files with 16 additions and 4 deletions
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20
arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi
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@@ -173,13 +173,16 @@
regulator-name = "ppvar_bigcpu";
status = "okay";
pwms = <&pwm1 0 1000>; // TODO: schematics say "FSW 600KHz". Change these???
// TODO: schematics say 600kHz so period of 1667 ns
// Rockchip has 25000 (40kHz) for these though.
pwms = <&pwm1 0 1667 0>;
// TODO: where's the mapping of duty cycle to voltage???
// TODO: we probably need in-flight PWM regulator series?
/* EC turns on w/ ap_core_en; always on for AP */
regulator-always-on;
regulator-boot-on;
regulator-min-microvolt = <800000>;
regulator-max-microvolt = <1500000>;
@@ -192,10 +195,13 @@
regulator-name = "ppvar_litcpu";
status = "okay";
pwms = <&pwm2 0 1000>;
// TODO: schematics say 600kHz so period of 1667 ns
// Rockchip has 25000 (40kHz) for these though.
pwms = <&pwm2 0 1667 0>;
/* EC turns on w/ ap_core_en; always on for AP */
regulator-always-on;
regulator-boot-on;
regulator-min-microvolt = <800000>;
regulator-max-microvolt = <1500000>;
@@ -208,10 +214,13 @@
regulator-name = "ppvar_gpu";
status = "okay";
pwms = <&pwm0 0 1000>;
// TODO: schematics say 600kHz so period of 1667 ns
// Rockchip has 25000 (40kHz) for these though.
pwms = <&pwm0 0 1667 0>;
/* EC turns on w/ ap_core_en; always on for AP */
regulator-always-on;
regulator-boot-on;
regulator-min-microvolt = <800000>;
regulator-max-microvolt = <1500000>;
@@ -224,10 +233,13 @@
regulator-name = "ppvar_centerlogic";
status = "okay";
pwms = <&pwm3 0 1000>;
// TODO: schematics say 600kHz so period of 1667 ns
// Rockchip has 25000 (40kHz) for these though.
pwms = <&pwm3 0 1667 0>;
/* EC turns on w/ ppvar_centerlogic_en; always on for AP */
regulator-always-on;
regulator-boot-on;
regulator-min-microvolt = <800000>;
regulator-max-microvolt = <1500000>;