linux-kernel - Re: [PATCH v4 5/6] arm64: dts: qcom: sm4450-qrd: add QRD4450 uart support

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Message-ID: <0bf7db81-feda-4395-97fc-97d5a0f1b6db@quicinc.com>
Date:   Mon, 25 Sep 2023 08:39:49 +0800
From:   Tengfei Fan <quic_tengfan@...cinc.com>
To:     Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
CC:     <agross@...nel.org>, <andersson@...nel.org>,
        <konrad.dybcio@...aro.org>, <tglx@...utronix.de>, <maz@...nel.org>,
        <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <conor+dt@...nel.org>, <catalin.marinas@....com>,
        <will@...nel.org>, <geert+renesas@...der.be>, <arnd@...db.de>,
        <neil.armstrong@...aro.org>, <nfraprado@...labora.com>,
        <rafal@...ecki.pl>, <peng.fan@....com>,
        <linux-arm-msm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <quic_tsoni@...cinc.com>,
        <quic_shashim@...cinc.com>, <quic_kaushalk@...cinc.com>,
        <quic_tdas@...cinc.com>, <quic_tingweiz@...cinc.com>,
        <quic_aiquny@...cinc.com>, <kernel@...cinc.com>
Subject: Re: [PATCH v4 5/6] arm64: dts: qcom: sm4450-qrd: add QRD4450 uart
 support



在 9/24/2023 3:12 AM, Dmitry Baryshkov 写道:
> On Fri, 22 Sept 2023 at 11:13, Tengfei Fan <quic_tengfan@...cinc.com> wrote:
>>
>> Add uart support for QRD4450 for enable uart console.
>>
>> Signed-off-by: Tengfei Fan <quic_tengfan@...cinc.com>
>> ---
>>   arch/arm64/boot/dts/qcom/sm4450-qrd.dts | 19 +++++++++++++++++--
>>   1 file changed, 17 insertions(+), 2 deletions(-)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/sm4450-qrd.dts b/arch/arm64/boot/dts/qcom/sm4450-qrd.dts
>> index 00a1c81ca397..e354bad57a9e 100644
>> --- a/arch/arm64/boot/dts/qcom/sm4450-qrd.dts
>> +++ b/arch/arm64/boot/dts/qcom/sm4450-qrd.dts
>> @@ -10,9 +10,24 @@
>>          model = "Qualcomm Technologies, Inc. SM4450 QRD";
>>          compatible = "qcom,sm4450-qrd", "qcom,sm4450";
>>
>> -       aliases { };
>> +       aliases {
>> +               serial0 = &uart7;
>> +       };
>>
>>          chosen {
>> -               bootargs = "console=hvc0";
>> +               stdout-path = "serial0:115200n8";
>>          };
>>   };
>> +
>> +&qupv3_id_0 {
>> +       status = "okay";
>> +};
>> +
>> +&tlmm {
>> +       /* Reserved for other subsystems */
>> +       gpio-reserved-ranges = <0 4>, <136 1>;
>> +};
> 
> Is this also related to the UART support? it looks like it is a
> separate patch, which should likely have the Fixes tag
Hi Dmitry,
This is related to the pinctrl support, UART support depend on pinctrl.
I will separate this to another patch for clearer.
> 
>> +
>> +&uart7 {
>> +       status = "okay";
>> +};
>> --
>> 2.17.1
>>
> 
> 

-- 
Thx and BRs,
Tengfei Fan