linux-kernel - Re: [PATCH v8 1/2] arm64: dts: qcom: sc7280: Add pinmux for I2S speaker and Headset

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Date:   Tue, 12 Apr 2022 20:13:04 +0530
From:   Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>
CC:     <agross@...nel.org>, <robh+dt@...nel.org>,
        <linux-arm-msm@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <quic_rohkumar@...cinc.com>,
        <srinivas.kandagatla@...aro.org>, <dianders@...omium.org>,
        <swboyd@...omium.org>, <judyhsiao@...omium.org>,
        Venkata Prasad Potturu <quic_potturu@...cinc.com>
Subject: Re: [PATCH v8 1/2] arm64: dts: qcom: sc7280: Add pinmux for I2S
 speaker and Headset


On 4/12/2022 8:03 PM, Bjorn Andersson wrote:
Thanks for your time Bjorn!!!
> On Tue 12 Apr 08:14 CDT 2022, Srinivasa Rao Mandadapu wrote:
>
>> Add pinmux nodes for primary and secondary I2S for SC7280 based platforms.
>>
>> Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>
>> Co-developed-by: Venkata Prasad Potturu <quic_potturu@...cinc.com>
>> Signed-off-by: Venkata Prasad Potturu <quic_potturu@...cinc.com>
>> ---
>>   arch/arm64/boot/dts/qcom/sc7280-idp.dtsi | 14 +++++++++++
>>   arch/arm64/boot/dts/qcom/sc7280.dtsi     | 40 ++++++++++++++++++++++++++++++++
>>   2 files changed, 54 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi b/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi
>> index ecbf2b8..1fc94b5 100644
>> --- a/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi
>> @@ -359,6 +359,20 @@
>>   	bias-disable;
>>   };
>>   
>> +&mi2s1_data0 {
>> +	drive-strength = <6>;
>> +	bias-disable;
>> +};
>> +
>> +&mi2s1_sclk {
>> +	drive-strength = <6>;
>> +	bias-disable;
>> +};
>> +
>> +&mi2s1_ws {
>> +	drive-strength = <6>;
>> +};
>> +
>>   &pm7325_gpios {
>>   	key_vol_up_default: key-vol-up-default {
>>   		pins = "gpio6";
>> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
>> index f0b64be..6e6cfeda 100644
>> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
>> @@ -3522,6 +3522,46 @@
>>   				function = "edp_hot";
>>   			};
>>   
>> +			mi2s0_data0: mi2s0-data0 {
> Are these ever going to be selected individually, or could this be:
>
> mi2s0_state: mi2s0-state {
> 	data0 {
> 		...;
> 	};
>
> 	data1 {
> 		...;
> 	};
>
> 	mclk {
> 		...;
> 	};
>
> 	etc
> };
>
> mi2s1-state {
> 	...;
> };
>
> And then a single pinctrl-0 = <&mi2c0_state>;
>
> Regards,
> Bjorn

We are not selecting individually. Actually we were following the same, 
but Doug Anderson suggested this way of handling in 1st version of patches.

So changed accordingly.

>
>> +				pins = "gpio98";
>> +				function = "mi2s0_data0";
>> +			};
>> +
>> +			mi2s0_data1: mi2s0-data1 {
>> +				pins = "gpio99";
>> +				function = "mi2s0_data1";
>> +			};
>> +
>> +			mi2s0_mclk: mi2s0-mclk {
>> +				pins = "gpio96";
>> +				function = "pri_mi2s";
>> +			};
>> +
>> +			mi2s0_sclk: mi2s0-sclk {
>> +				pins = "gpio97";
>> +				function = "mi2s0_sck";
>> +			};
>> +
>> +			mi2s0_ws: mi2s0-ws {
>> +				pins = "gpio100";
>> +				function = "mi2s0_ws";
>> +			};
>> +
>> +			mi2s1_data0: mi2s1-data0 {
>> +				pins = "gpio107";
>> +				function = "mi2s1_data0";
>> +			};
>> +
>> +			mi2s1_sclk: mi2s1-sclk {
>> +				pins = "gpio106";
>> +				function = "mi2s1_sck";
>> +			};
>> +
>> +			mi2s1_ws: mi2s1-ws {
>> +				pins = "gpio108";
>> +				function = "mi2s1_ws";
>> +			};
>> +
>>   			pcie1_clkreq_n: pcie1-clkreq-n {
>>   				pins = "gpio79";
>>   				function = "pcie1_clkreqn";
>> -- 
>> 2.7.4
>>