linux-kernel - Re: [PATCH 1/2] ARM: dts: exynos: Use macro for PWM signal polarity in Exynos4 boards

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Message-ID: <20161028134138.GB5646@kozik-lap>
Date:   Fri, 28 Oct 2016 16:41:38 +0300
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Javier Martinez Canillas <javier@....samsung.com>
Cc:     linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        Kukjin Kim <kgene@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        linux-samsung-soc@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 1/2] ARM: dts: exynos: Use macro for PWM signal polarity
 in Exynos4 boards

On Thu, Oct 27, 2016 at 02:47:17PM -0300, Javier Martinez Canillas wrote:
> Using the PWM_POLARITY_INVERTED macro instead of the hardcoded number
> 0 makes the DTS easier to read.


Eeee.... PWM_POLARITY_INVERTED = 1 << 0 = 1.

And you are replacing 0 with 1. Hm? This is not described at all in
commit message...

Best regards,
Krzysztof

> 
> Signed-off-by: Javier Martinez Canillas <javier@....samsung.com>
> ---
> 
>  arch/arm/boot/dts/exynos4412-odroidu3.dts | 3 ++-
>  arch/arm/boot/dts/exynos4412-trats2.dts   | 3 ++-
>  2 files changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/exynos4412-odroidu3.dts b/arch/arm/boot/dts/exynos4412-odroidu3.dts
> index 99634c54dca9..480a80624b77 100644
> --- a/arch/arm/boot/dts/exynos4412-odroidu3.dts
> +++ b/arch/arm/boot/dts/exynos4412-odroidu3.dts
> @@ -12,6 +12,7 @@
>  */
>  
>  /dts-v1/;
> +#include <dt-bindings/pwm/pwm.h>
>  #include "exynos4412-odroid-common.dtsi"
>  
>  / {
> @@ -35,7 +36,7 @@
>  
>  	fan0: pwm-fan {
>  		compatible = "pwm-fan";
> -		pwms = <&pwm 0 10000 0>;
> +		pwms = <&pwm 0 10000 PWM_POLARITY_INVERTED>;
>  		cooling-min-state = <0>;
>  		cooling-max-state = <3>;
>  		#cooling-cells = <2>;
> diff --git a/arch/arm/boot/dts/exynos4412-trats2.dts b/arch/arm/boot/dts/exynos4412-trats2.dts
> index 41ecd6d465a7..63ad30507d4f 100644
> --- a/arch/arm/boot/dts/exynos4412-trats2.dts
> +++ b/arch/arm/boot/dts/exynos4412-trats2.dts
> @@ -18,6 +18,7 @@
>  #include <dt-bindings/gpio/gpio.h>
>  #include <dt-bindings/interrupt-controller/irq.h>
>  #include <dt-bindings/clock/maxim,max77686.h>
> +#include <dt-bindings/pwm/pwm.h>
>  
>  / {
>  	model = "Samsung Trats 2 based on Exynos4412";
> @@ -164,7 +165,7 @@
>  			max77693_haptic {
>  				compatible = "maxim,max77693-haptic";
>  				haptic-supply = <&ldo26_reg>;
> -				pwms = <&pwm 0 38022 0>;
> +				pwms = <&pwm 0 38022 PWM_POLARITY_INVERTED>;
>  			};
>  
>  			charger {
> -- 
> 2.7.4
>