linux-kernel - Re: [PATCH 2/3] arm: dts: rk322x: correct uart2 pinctrl and add another sets

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Date:   Wed, 17 May 2017 15:35:42 +0800
From:   Frank Wang <frank.wang@...k-chips.com>
To:     Kever Yang <ellisys@....com>
Cc:     heiko@...ech.de, robh+dt@...nel.org, mark.rutland@....com,
        linux@...linux.org.uk, huangtao@...k-chips.com,
        devicetree@...r.kernel.org, charles.chen@...k-chips.com,
        wmc@...k-chips.com, kevan.lan@...k-chips.com,
        linux-kernel@...r.kernel.org, sugar.zhang@...k-chips.com,
        linux-rockchip@...ts.infradead.org, cody.xie@...k-chips.com,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 2/3] arm: dts: rk322x: correct uart2 pinctrl and add
 another sets

Hi Kever,


On 2017/5/17 14:31, Kever Yang wrote:
> Hi Frank,
>
>
> On 05/17/2017 11:40 AM, Frank Wang wrote:
>> Correct UART2 PINCTRL flag and add another PINCTRL sets for UART2
>> in case of confict with SDMMC.
>>
>> Signed-off-by: Frank Wang <frank.wang@...k-chips.com>
>> ---
>>   arch/arm/boot/dts/rk322x.dtsi | 11 +++++++++--
>>   1 file changed, 9 insertions(+), 2 deletions(-)
>>
>> diff --git a/arch/arm/boot/dts/rk322x.dtsi 
>> b/arch/arm/boot/dts/rk322x.dtsi
>> index cc6a27d..ea1239a 100644
>> --- a/arch/arm/boot/dts/rk322x.dtsi
>> +++ b/arch/arm/boot/dts/rk322x.dtsi
>> @@ -222,7 +222,7 @@
>>           clocks = <&cru SCLK_UART2>, <&cru PCLK_UART2>;
>>           clock-names = "baudclk", "apb_pclk";
>>           pinctrl-names = "default";
>> -        pinctrl-0 = <&uart2_xfer>;
>> +        pinctrl-0 = <&uart21_xfer>;
>
> There are more than one group of UART in rk322x, maybe we need to move
> or add this setting in the dts file to override dtsi setting?
>

That makes sense, I will delete above change in next version and 
overwrite it in dts file later.

BR.
Frank


> Thanks,
> - Kever
>>           reg-shift = <2>;
>>           reg-io-width = <4>;
>>           status = "disabled";
>> @@ -693,7 +693,7 @@
>>             uart2 {
>>               uart2_xfer: uart2-xfer {
>> -                rockchip,pins = <1 18 RK_FUNC_2 &pcfg_pull_none>,
>> +                rockchip,pins = <1 18 RK_FUNC_2 &pcfg_pull_up>,
>>                           <1 19 RK_FUNC_2 &pcfg_pull_none>;
>>               };
>>   @@ -705,5 +705,12 @@
>>                   rockchip,pins = <0 24 RK_FUNC_1 &pcfg_pull_none>;
>>               };
>>           };
>> +
>> +        uart2-1 {
>> +            uart21_xfer: uart21-xfer {
>> +                rockchip,pins = <1 10 RK_FUNC_2 &pcfg_pull_up>,
>> +                        <1 9 RK_FUNC_2 &pcfg_pull_none>;
>> +            };
>> +        };
>>       };
>>   };
>
>
>
>
>