linux-kernel - Re: [PATCH 05/12] arm64: dts: Add I2C nodes for Hi3660

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Date:   Tue, 23 May 2017 13:55:53 +0800
From:   zhangfei <zhangfei.gao@...aro.org>
To:     Rob Herring <robh@...nel.org>, Guodong Xu <guodong.xu@...aro.org>
Cc:     xuwei5@...ilicon.com, catalin.marinas@....com, will.deacon@....com,
        wangkefeng.wang@...wei.com, puck.chen@...ilicon.com,
        xuejiancheng@...ilicon.com, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 05/12] arm64: dts: Add I2C nodes for Hi3660

Hi, Rob


Thanks for the review.

On 2017年05月23日 08:39, Rob Herring wrote:
> On Wed, May 17, 2017 at 04:37:38PM +0800, Guodong Xu wrote:
>> From: Zhangfei Gao <zhangfei.gao@...aro.org>
>>
>> Add I2C nodes for Hi3660-hikey960.
>>
>> On HiKey960,
>> I2C0, I2C7 is connected to Low Speed Expansion Connector.
>> I2C1 is connected to ADV7535.
>> I2C3 is connected to USB5734.
>>
>> Signed-off-by: Zhangfei Gao <zhangfei.gao@...aro.org>
>> Signed-off-by: Guodong Xu <guodong.xu@...aro.org>
>> ---
>>   arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dts | 18 ++++++++
>>   arch/arm64/boot/dts/hisilicon/hi3660.dtsi         | 56 +++++++++++++++++++++++
>>   2 files changed, 74 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dts b/arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dts
>> index 64875a5..f685b1e 100644
>> --- a/arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dts
>> +++ b/arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dts
>> @@ -29,6 +29,24 @@
>>   	};
>>   };
>>   
>> +&i2c0 {
>> +	status = "okay";
>> +};
>> +
>> +&i2c1 {
>> +	status = "okay";
>> +
>> +	adv7533: adv7533@39 {
>> +		status = "ok";
>> +		compatible = "adi,adv7533";
>> +		reg = <0x39>;
>> +	};
>> +};
>> +
>> +&i2c7 {
>> +	status = "okay";
>> +};
> labels for the LS connector?
Any examples?
There is compile error if only change dts like
ls-connector {
         &i2c7 {
                 status = "okay";
         };
};

>
>> +
>>   &uart5 {
>>   	status = "okay";
>>   };
>> diff --git a/arch/arm64/boot/dts/hisilicon/hi3660.dtsi b/arch/arm64/boot/dts/hisilicon/hi3660.dtsi
>> index f55710a..f217c9d 100644
>> --- a/arch/arm64/boot/dts/hisilicon/hi3660.dtsi
>> +++ b/arch/arm64/boot/dts/hisilicon/hi3660.dtsi
>> @@ -186,6 +186,62 @@
>>   			#reset-cells = <2>;
>>   		};
>>   
>> +		i2c0: i2c@...71000 {
> lowercase hex please.
Yes, will change
>
>> +			compatible = "snps,designware-i2c";
> These should have an SoC specific compatible.
We directly use drivers/i2c/busses/i2c-designware-platdrv.c,
do we still an soc specific compatible?
Checked arch/arm64/boot/dts/amd/amd-seattle-soc.dtsi, and other examples,

compatible = "snps,designware-i2c" is used.


Thanks