linux-kernel - Re: [PATCH v2 1/2] riscv: dts: sifive: unleashed/unmatched: Remove PWM controlled LED's active-low properties

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Date:   Tue, 31 Jan 2023 18:31:59 +0000
From:   Conor Dooley <conor@...nel.org>
To:     Nylon Chen <nylon.chen@...ive.com>
Cc:     aou@...s.berkeley.edu, emil.renner.berthing@...onical.com,
        geert+renesas@...der.be, heiko@...ech.de,
        krzysztof.kozlowski+dt@...aro.org, palmer@...belt.com,
        paul.walmsley@...ive.com, robh+dt@...nel.org,
        thierry.reding@...il.com, u.kleine-koenig@...gutronix.de,
        devicetree@...r.kernel.org, linux-pwm@...r.kernel.org,
        linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
        nylon7717@...il.com, zong.li@...ive.com, greentime.hu@...ive.com,
        vincent.chen@...ive.com
Subject: Re: [PATCH v2 1/2] riscv: dts: sifive: unleashed/unmatched: Remove
 PWM controlled LED's active-low properties

Hey Nylon,

On Mon, Jan 30, 2023 at 05:32:28PM +0800, Nylon Chen wrote:
> This removes the active-low properties of the PWM-controlled LEDs in
> the HiFive Unmatched device tree.
> 
> The reference is hifive-unleashed-a00.pdf[0] and hifive-unmatched-schematics-v3.pdf[1].
> 
> [0]: https://sifive.cdn.prismic.io/sifive/c52a8e32-05ce-4aaf-95c8-7bf8453f8698_hifive-unleashed-a00-schematics-1.pdf
> [1]: https://sifive.cdn.prismic.io/sifive/6a06d6c0-6e66-49b5-8e9e-e68ce76f4192_hifive-unmatched-schematics-v3.pdf

Ideally these would be:
Link: https://sifive.cdn.prismic.io/sifive/c52a8e32-05ce-4aaf-95c8-7bf8453f8698_hifive-unleashed-a00-schematics-1.pdf [0]
so that they integrate nice with the git trailers mechanism.
If you resend, please update them to regular link tags.

I checked out the circuits last time around and agreed that they should
not be active-low.
Reviewed-by: Conor Dooley <conor.dooley@...rochip.com>

I expect that both patches will go through the PWM tree together, so:
Acked-by: Conor Dooley <conor.dooley@...rochip.com>

Thanks,
Conor.

> 
> Signed-off-by: Nylon Chen <nylon.chen@...ive.com>
> ---
>  arch/riscv/boot/dts/sifive/hifive-unleashed-a00.dts | 4 ----
>  arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts | 4 ----
>  2 files changed, 8 deletions(-)
> 
> diff --git a/arch/riscv/boot/dts/sifive/hifive-unleashed-a00.dts b/arch/riscv/boot/dts/sifive/hifive-unleashed-a00.dts
> index 900a50526d77..7a9f336a391c 100644
> --- a/arch/riscv/boot/dts/sifive/hifive-unleashed-a00.dts
> +++ b/arch/riscv/boot/dts/sifive/hifive-unleashed-a00.dts
> @@ -50,7 +50,6 @@ led-controller {
>  
>  		led-d1 {
>  			pwms = <&pwm0 0 7812500 PWM_POLARITY_INVERTED>;
> -			active-low;
>  			color = <LED_COLOR_ID_GREEN>;
>  			max-brightness = <255>;
>  			label = "d1";
> @@ -58,7 +57,6 @@ led-d1 {
>  
>  		led-d2 {
>  			pwms = <&pwm0 1 7812500 PWM_POLARITY_INVERTED>;
> -			active-low;
>  			color = <LED_COLOR_ID_GREEN>;
>  			max-brightness = <255>;
>  			label = "d2";
> @@ -66,7 +64,6 @@ led-d2 {
>  
>  		led-d3 {
>  			pwms = <&pwm0 2 7812500 PWM_POLARITY_INVERTED>;
> -			active-low;
>  			color = <LED_COLOR_ID_GREEN>;
>  			max-brightness = <255>;
>  			label = "d3";
> @@ -74,7 +71,6 @@ led-d3 {
>  
>  		led-d4 {
>  			pwms = <&pwm0 3 7812500 PWM_POLARITY_INVERTED>;
> -			active-low;
>  			color = <LED_COLOR_ID_GREEN>;
>  			max-brightness = <255>;
>  			label = "d4";
> diff --git a/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts b/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts
> index 07387f9c135c..11f08a545ee6 100644
> --- a/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts
> +++ b/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts
> @@ -52,7 +52,6 @@ led-controller-1 {
>  
>  		led-d12 {
>  			pwms = <&pwm0 0 7812500 PWM_POLARITY_INVERTED>;
> -			active-low;
>  			color = <LED_COLOR_ID_GREEN>;
>  			max-brightness = <255>;
>  			label = "d12";
> @@ -69,19 +68,16 @@ multi-led {
>  
>  			led-red {
>  				pwms = <&pwm0 2 7812500 PWM_POLARITY_INVERTED>;
> -				active-low;
>  				color = <LED_COLOR_ID_RED>;
>  			};
>  
>  			led-green {
>  				pwms = <&pwm0 1 7812500 PWM_POLARITY_INVERTED>;
> -				active-low;
>  				color = <LED_COLOR_ID_GREEN>;
>  			};
>  
>  			led-blue {
>  				pwms = <&pwm0 3 7812500 PWM_POLARITY_INVERTED>;
> -				active-low;
>  				color = <LED_COLOR_ID_BLUE>;
>  			};
>  		};
> -- 
> 2.36.1
> 

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