linux-kernel - Re: [PATCH v2 1/2] ARM: dts: Fix I2C repeated start issue on Armada-38x

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Message-ID: <87o9ppmy00.fsf@free-electrons.com>
Date:   Mon, 02 Oct 2017 16:21:19 +0200
From:   Gregory CLEMENT <gregory.clement@...e-electrons.com>
To:     Kalyan Kinthada <kalyan.kinthada@...iedtelesis.co.nz>
Cc:     jason@...edaemon.net, andrew@...n.ch,
        sebastian.hesselbarth@...il.com, robh+dt@...nel.org,
        mark.rutland@....com, linux@...linux.org.uk, wsa@...-dreams.de,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-i2c@...r.kernel.org,
        Chris Packham <chris.packham@...iedtelesis.co.nz>
Subject: Re: [PATCH v2 1/2] ARM: dts: Fix I2C repeated start issue on Armada-38x

Hi Kalyan,
 
 On ven., sept. 29 2017, Kalyan Kinthada <kalyan.kinthada@...iedtelesis.co.nz> wrote:

> All the Armada 38x(380, 385, 388) have a silicon issue in
> the I2C controller which violates the I2C repeated start timing
> (errata FE-8471889).
>
> i2c-mv64xxx driver handles this errata based on the compatible string
> "marvell,mv78230-a0-i2c".
>
> This patch activates the "marvell,mv78230-a0-i2c" compatible string
> for the I2C controller on armada-38x SoC based devices.
>
> Signed-off-by: Kalyan Kinthada <kalyan.kinthada@...iedtelesis.co.nz>

Applied on mvebu/fixes

Thanks,

Gregory

> ---
>  arch/arm/boot/dts/armada-38x.dtsi | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm/boot/dts/armada-38x.dtsi b/arch/arm/boot/dts/armada-38x.dtsi
> index 7ff0811e61db..4960722aab32 100644
> --- a/arch/arm/boot/dts/armada-38x.dtsi
> +++ b/arch/arm/boot/dts/armada-38x.dtsi
> @@ -178,7 +178,7 @@
>  			};
>  
>  			i2c0: i2c@...00 {
> -				compatible = "marvell,mv64xxx-i2c";
> +				compatible = "marvell,mv78230-a0-i2c", "marvell,mv64xxx-i2c";
>  				reg = <0x11000 0x20>;
>  				#address-cells = <1>;
>  				#size-cells = <0>;
> @@ -189,7 +189,7 @@
>  			};
>  
>  			i2c1: i2c@...00 {
> -				compatible = "marvell,mv64xxx-i2c";
> +				compatible = "marvell,mv78230-a0-i2c", "marvell,mv64xxx-i2c";
>  				reg = <0x11100 0x20>;
>  				#address-cells = <1>;
>  				#size-cells = <0>;
> -- 
> 2.14.1
>

-- 
Gregory Clement, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com