linux-kernel - Re: [PATCH v2 10/10] arm: dts: mediatek: add mt7629 pwm support

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Date:   Wed, 14 Aug 2019 19:47:43 +0800
From:   Ryder Lee <ryder.lee@...iatek.com>
To:     Sam Shih <sam.shih@...iatek.com>
CC:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Thierry Reding <thierry.reding@...il.com>,
        John Crispin <john@...ozen.org>, <linux-pwm@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-mediatek@...ts.infradead.org>
Subject: Re: [PATCH v2 10/10] arm: dts: mediatek: add mt7629 pwm support

On Wed, 2019-08-14 at 18:43 +0800, Sam Shih wrote:
> From: sam shih <sam.shih@...iatek.com>
> 
> This adds pwm support for MT7629.
> 
> Signed-off-by: Sam Shih <sam.shih@...iatek.com>
> ---
>  arch/arm/boot/dts/mt7629.dtsi | 14 ++++++++++++++
>  drivers/pwm/pwm-mediatek.c    |  7 +++++++
>  2 files changed, 21 insertions(+)

Split dts and driver into different patches.
 
> diff --git a/arch/arm/boot/dts/mt7629.dtsi b/arch/arm/boot/dts/mt7629.dtsi
> index 9608bc2ccb3f..352df8d61788 100644
> --- a/arch/arm/boot/dts/mt7629.dtsi
> +++ b/arch/arm/boot/dts/mt7629.dtsi
> @@ -241,6 +241,18 @@
>  			status = "disabled";
>  		};
>  
> +		pwm: pwm@...06000 {
> +			compatible = "mediatek,mt7629-pwm";
> +			reg = <0 0x11006000 0 0x1000>;
> +			interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_LOW>;
> +			clocks = <&topckgen CLK_TOP_PWM_SEL>,
> +				 <&pericfg CLK_PERI_PWM_PD>,
> +				 <&pericfg CLK_PERI_PWM1_PD>;
> +			clock-names = "top", "main", "pwm1";
> +			num-pwms = <1>;
> +			status = "disabled";
> +		};
> +
>  		i2c: i2c@...07000 {
>  			compatible = "mediatek,mt7629-i2c",
>  				     "mediatek,mt2712-i2c";
> diff --git a/drivers/pwm/pwm-mediatek.c b/drivers/pwm/pwm-mediatek.c
> index 922a7543a2b1..d2352ca7792e 100644
> --- a/drivers/pwm/pwm-mediatek.c
> +++ b/drivers/pwm/pwm-mediatek.c
> @@ -327,11 +327,18 @@ static const struct pwm_mediatek_of_data mt7628_pwm_data = {
>  	.has_clks = false,
>  };
>  
> +static const struct pwm_mediatek_of_data mt7629_pwm_data = {
> +	.fallback_npwms = 1,
> +	.pwm45_fixup = false,
> +	.has_clks = true,
> +};
> +
>  static const struct of_device_id pwm_mediatek_of_match[] = {
>  	{ .compatible = "mediatek,mt2712-pwm", .data = &mt2712_pwm_data },
>  	{ .compatible = "mediatek,mt7622-pwm", .data = &mt7622_pwm_data },
>  	{ .compatible = "mediatek,mt7623-pwm", .data = &mt7623_pwm_data },
>  	{ .compatible = "mediatek,mt7628-pwm", .data = &mt7628_pwm_data },
> +	{ .compatible = "mediatek,mt7629-pwm", .data = &mt7629_pwm_data },
>  	{ },
>  };
>  MODULE_DEVICE_TABLE(of, pwm_mediatek_of_match);

It's odd. You fallback to use mt7622 compatible here: 
[PATCH v2 7/10] dt-bindings: pwm: update bindings for MT7629 SoC.


Ryder