On Mon, Apr 03, 2023 at 01:50:52PM +0300, Cristian Ciocaltea wrote:
> Add the necessary DT changes for the Rock 5B board to enable support for
> the PWM controlled heat sink fan.
Honest question, but should we be adding this to the board file if not
every device has a PWM fan (they all have the socket for the fan, but
not the fan)? For example I have a passively cooled case that doesn't
include a fan.
Thank you,
Chris Morgan.
>
> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@xxxxxxxxxxxxx>
> ---
> arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts b/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts
> index 95805cb0adfa..bd74d9da2c17 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts
> +++ b/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts
> @@ -17,6 +17,14 @@ chosen {
> stdout-path = "serial2:1500000n8";
> };
>
> + fan: pwm-fan {
> + compatible = "pwm-fan";
> + cooling-levels = <0 95 145 195 255>;
> + fan-supply = <&vcc5v0_sys>;
> + pwms = <&pwm1 0 50000 0>;
> + #cooling-cells = <2>;
> + };
> +
> vcc5v0_sys: vcc5v0-sys-regulator {
> compatible = "regulator-fixed";
> regulator-name = "vcc5v0_sys";
> @@ -27,6 +35,10 @@ vcc5v0_sys: vcc5v0-sys-regulator {
> };
> };
>
> +&pwm1 {
> + status = "okay";
> +};
> +
> &sdhci {
> bus-width = <8>;
> no-sdio;
> --
> 2.40.0
>
