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Message-ID: <cb47f89f-00ea-96e8-1e10-ae84406b924b@linaro.org>
Date: Mon, 7 Nov 2022 18:27:05 +0100
From: Neil Armstrong <neil.armstrong@...aro.org>
To: Chao Zhang <chao.zhang@...ogic.com>,
linux-arm-kernel@...ts.infradead.org,
linux-amlogic@...ts.infradead.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Cc: Neil Armstrong <narmstrong@...libre.com>,
Kevin Hilman <khilman@...libre.com>,
Jerome Brunet <jbrunet@...libre.com>,
Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
Rob Herring <robh+dt@...nel.org>,
Amjad Ouled-Ameur <aouledameur@...libre.com>
Subject: Re: [PATCH] arm64: dts: meson-s4-s805x2: add 12V/3.3V/1.8V/vddcpu
nodes for Regulator
Hi,
On 07/11/2022 03:11, Chao Zhang wrote:
> From: "chao.zhang" <chao.zhang@...ogic.com>
>
> Add 12V/3.3V/1.8V/vddcpu nodes for Regulator on Amlogic S4 SoCs.
>
> Signed-off-by: Neil Armstrong <narmstrong@...libre.com>
> Signed-off-by: Amjad Ouled-Ameur <aouledameur@...libre.com>
> Reviewed-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
> Link: https://lore.kernel.org/r/20221004-up-aml-fix-spi-v4-3-0342d8e10c49@baylibre.com
> Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
I think you did a bad copy paste because those lines comes from another already applied commit.
Please add your own Signed-off-by.
> ---
> .../dts/amlogic/meson-s4-s805x2-aq222.dts | 85 +++++++++++++++++++
> arch/arm64/boot/dts/amlogic/meson-s4.dtsi | 4 +
> 2 files changed, 89 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/amlogic/meson-s4-s805x2-aq222.dts b/arch/arm64/boot/dts/amlogic/meson-s4-s805x2-aq222.dts
> index 8ffbcb2b1ac5..80c959766b79 100644
> --- a/arch/arm64/boot/dts/amlogic/meson-s4-s805x2-aq222.dts
> +++ b/arch/arm64/boot/dts/amlogic/meson-s4-s805x2-aq222.dts
> @@ -22,6 +22,91 @@ memory@0 {
> device_type = "memory";
> reg = <0x0 0x0 0x0 0x40000000>;
> };
> + main_12v: regulator-main_12v {
> + compatible = "regulator-fixed";
> + regulator-name = "12V";
> + regulator-min-microvolt = <12000000>;
> + regulator-max-microvolt = <12000000>;
> + regulator-always-on;
> + };
> +
> + vddao_3v3: regulator-vddao_3v3 {
> + compatible = "regulator-fixed";
> + regulator-name = "VDDAO_3V3";
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + vin-supply = <&main_12v>;
> + regulator-always-on;
> + };
> +
> + vddio_ao1v8: regulator-vddio_ao1v8 {
> + compatible = "regulator-fixed";
> + regulator-name = "VDDIO_AO1V8";
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <1800000>;
> + vin-supply = <&vddao_3v3>;
> + regulator-always-on;
> + };
> +
> + vddcpu: regulator-vddcpu {
> + /*
> + * SY8120B1ABC DC/DC Regulator.
> + */
> + compatible = "pwm-regulator";
> +
> + regulator-name = "VDDCPU";
> + regulator-min-microvolt = <689000>;
> + regulator-max-microvolt = <1049000>;
> +
> + vin-supply = <&main_12v>;
> +
> + pwms = <&pwm_ij 1 1500 0>;
Without the PWM node this won't apply.
> + pwm-dutycycle-range = <100 0>;
> +
> + regulator-boot-on;
> + regulator-always-on;
> + max-duty-cycle = <1500>;
> + /* Voltage Duty-Cycle */
> + voltage-table = <1049000 0>,
> + <1039000 3>,
> + <1029000 6>,
> + <1019000 9>,
> + <1009000 12>,
> + <999000 14>,
> + <989000 17>,
> + <979000 20>,
> + <969000 23>,
> + <959000 26>,
> + <949000 29>,
> + <939000 31>,
> + <929000 34>,
> + <919000 37>,
> + <909000 40>,
> + <899000 43>,
> + <889000 45>,
> + <879000 48>,
> + <869000 51>,
> + <859000 54>,
> + <849000 56>,
> + <839000 59>,
> + <829000 62>,
> + <819000 65>,
> + <809000 68>,
> + <799000 70>,
> + <789000 73>,
> + <779000 76>,
> + <769000 79>,
> + <759000 81>,
> + <749000 84>,
> + <739000 87>,
> + <729000 89>,
> + <719000 92>,
> + <709000 95>,
> + <699000 98>,
> + <689000 100>;
This is wrong, the regulator-min-microvolt and regulator-max-microvolt + pwm-dutycycle-range is enough.
> + status = "okay";
> + };
> +
>
> };
>
> diff --git a/arch/arm64/boot/dts/amlogic/meson-s4.dtsi b/arch/arm64/boot/dts/amlogic/meson-s4.dtsi
> index ad50cba42d19..405a5af9ac1d 100644
> --- a/arch/arm64/boot/dts/amlogic/meson-s4.dtsi
> +++ b/arch/arm64/boot/dts/amlogic/meson-s4.dtsi
> @@ -17,6 +17,7 @@ cpu0: cpu@0 {
> compatible = "arm,cortex-a35";
> reg = <0x0 0x0>;
> enable-method = "psci";
> + cpu-supply = <&vddcpu>;
> };
>
> cpu1: cpu@1 {
> @@ -24,6 +25,7 @@ cpu1: cpu@1 {
> compatible = "arm,cortex-a35";
> reg = <0x0 0x1>;
> enable-method = "psci";
> + cpu-supply = <&vddcpu>;
> };
>
> cpu2: cpu@2 {
> @@ -31,6 +33,7 @@ cpu2: cpu@2 {
> compatible = "arm,cortex-a35";
> reg = <0x0 0x2>;
> enable-method = "psci";
> + cpu-supply = <&vddcpu>;
> };
>
> cpu3: cpu@3 {
> @@ -38,6 +41,7 @@ cpu3: cpu@3 {
> compatible = "arm,cortex-a35";
> reg = <0x0 0x3>;
> enable-method = "psci";
> + cpu-supply = <&vddcpu>;
> };
> };
>
Without a clock, this is useless.
Neil
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