linux-kernel - Re: [PATCH v2 3/3] arm64: allwinner: h6: add i2c0 node in PineH64

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Message-ID: <20190816075211.xaq54q2cdniwjpp3@flea>
Date:   Fri, 16 Aug 2019 09:52:11 +0200
From:   Maxime Ripard <maxime.ripard@...tlin.com>
To:     Bhushan Shah <bshah@....org>
Cc:     Icenowy Zheng <icenowy@...c.io>, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Chen-Yu Tsai <wens@...e.org>, Wolfram Sang <wsa@...-dreams.de>,
        Gregory CLEMENT <gregory.clement@...tlin.com>,
        linux-i2c@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 3/3] arm64: allwinner: h6: add i2c0 node in PineH64

65;5603;1c
On Fri, Aug 16, 2019 at 12:17:10PM +0530, Bhushan Shah wrote:
> i2c0 bus is exposed by PI-2 BUS in the PineH64, model B.
>
> Signed-off-by: Bhushan Shah <bshah@....org>
> ---
> Changes in v2:
>   - Don't enable the i2c0 node in PineH64 by default
>
>  arch/arm64/boot/dts/allwinner/sun50i-h6-pine-h64.dts | 9 +++++++++
>  1 file changed, 9 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6-pine-h64.dts b/arch/arm64/boot/dts/allwinner/sun50i-h6-pine-h64.dts
> index 684d1daa3081..97d9b7c63fb3 100644
> --- a/arch/arm64/boot/dts/allwinner/sun50i-h6-pine-h64.dts
> +++ b/arch/arm64/boot/dts/allwinner/sun50i-h6-pine-h64.dts
> @@ -160,6 +160,15 @@
>  	vcc-pg-supply = <&reg_aldo1>;
>  };
>
> +/* This i2c interface is exposed on PI-2 BUS, Pin 3 (I2C_SDA) and 5 (I2C_SCL) */
> +&i2c0 {
> +	status = "disabled";
> +};

This property is set to disabled in the DTSI already

> +&i2c0_pins {
> +	bias-pull-up;
> +};
> +

And this should be in the same overlay than the one that sets status
to okay.

Maxime

--
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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