linux-kernel - Re: [linux-sunxi] [PATCH v2 2/4] ARM: dtsi: add pwm node for sun8i.

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Message-ID: <b8af4f6a-c2df-7382-9a1c-9c1a9ea5f8c4@arm.com>
Date:   Wed, 28 Feb 2018 01:53:49 +0000
From:   André Przywara <andre.przywara@....com>
To:     hao5781286@...il.com, thierry.reding@...il.com, robh+dt@...nel.org,
        mark.rutland@....com, wens@...e.org,
        maxime.ripard@...e-electrons.com
Cc:     linux@...linux.org.uk, Claudiu.Beznea@...rochip.com,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-pwm@...r.kernel.org, linux-sunxi@...glegroups.com
Subject: Re: [linux-sunxi] [PATCH v2 2/4] ARM: dtsi: add pwm node for sun8i.

Hi,

The subject line should mention the R40, there are far too many sun8i SoCs.

On 25/02/18 13:51, hao_zhang wrote:
> This patch adds pwm node for sun8i.
> 
> Signed-off-by: hao_zhang <hao5781286@...il.com>
> ---
>  arch/arm/boot/dts/sun8i-r40.dtsi | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/sun8i-r40.dtsi b/arch/arm/boot/dts/sun8i-r40.dtsi
> index 173dcc1..99a0261 100644
> --- a/arch/arm/boot/dts/sun8i-r40.dtsi
> +++ b/arch/arm/boot/dts/sun8i-r40.dtsi
> @@ -295,6 +295,11 @@
>  				bias-pull-up;
>  			};
>  
> +			pwm_ch0_pin: pwm-ch0-pin {
> +				pins = "PB2";
> +				function = "pwm";
> +			};
> +
>  			uart0_pb_pins: uart0-pb-pins {
>  				pins = "PB22", "PB23";
>  				function = "uart0";
> @@ -306,6 +311,14 @@
>  			reg = <0x01c20c90 0x10>;
>  		};
>  
> +		pwm: pwm@...3400 {
> +			     compatible = "allwinner,sun8i-r40-pwm";
> +			     reg = <0x01c23400 0x154>;

Following my comments on the binding document:
			interrupts = <GIC_SPI 47 IRQ_TYPE_LEVEL_HIGH>;

> +			     clocks = <&osc24M>;

And possibly multiple clocks here (though I fail to find the APB1 clock
being exposed by our CCU).

Cheers,
Andre.

> +			     #pwm-cells = <3>;
> +			     status = "disabled";
> +		};
> +
>  		uart0: serial@...8000 {
>  			compatible = "snps,dw-apb-uart";
>  			reg = <0x01c28000 0x400>;
>