linux-kernel - Re: [PATCH 0/2] i2c: meson: add support for Meson G12A SoC i2c controller

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Date:   Thu, 29 Nov 2018 19:55:43 +0800
From:   Jian Hu <jian.hu@...ogic.com>
To:     Jerome Brunet <jbrunet@...libre.com>,
        Neil Armstrong <narmstrong@...libre.com>
CC:     Kevin Hilman <khilman@...libre.com>,
        Carlo Caione <carlo@...one.org>, Rob Herring <robh@...nel.org>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Wolfram Sang <wsa@...-dreams.de>,
        Mark Rutland <mark.rutland@....com>,
        Jianxin Pan <jianxin.pan@...ogic.com>,
        Hanjie Lin <hanjie.lin@...ogic.com>,
        <linux-amlogic@...ts.infradead.org>, <linux-i2c@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>
Subject: Re: [PATCH 0/2] i2c: meson: add support for Meson G12A SoC i2c
 controller



On 2018/11/29 19:02, Jerome Brunet wrote:
> On Thu, 2018-11-29 at 18:59 +0800, Jian Hu wrote:
>> 1)Add G12A SoC i2c compatible string in dt-bindings.
>> 2)Add compatible and data for G12A I2C controller driver.
>>
>> Jian Hu (2):
>>    dt-bindings: i2c: meson: add Meson G12A SoC i2c compatible string
>>    i2c: meson: add support for Meson G12A SoC I2C controller
> 
> Looks to me that the g12a is compatible with the axg. What is the point of
> adding this new compatible string ?
> 

I am okay if it is reasonable below in file 
arch/arm64/boot/dts/amlogic/meson-g12a.dtsi. I2c controller node just 
uses axg's compatible.

			i2c0: i2c@...00 {
				compatible = "amlogic,meson-axg-i2c";
				reg = <0x0 0x1f000 0x0 0x20>;
				interrupts = <GIC_SPI 21 		   IRQ_TYPE_EDGE_RISING>;
				clocks = <&clkc CLKID_I2C>;
				#address-cells = <1>;
				#size-cells = <0>;
				status = "disabled";
			};

If it is, I just submit the i2c controller node in meson-g12a.dtsi.

>>
>>   Documentation/devicetree/bindings/i2c/i2c-meson.txt | 1 +
>>   drivers/i2c/busses/i2c-meson.c                      | 5 +++++
>>   2 files changed, 6 insertions(+)
>>
> 
> 
> .
>