linux-kernel - Re: [PATCH v13 4/4] arm64: dts: qcom: sc7280-herobrine: Add lpi pinmux properties for CRD 3.0/3.1

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Message-ID: <YnL+qwoSHt/95PcU@google.com>
Date:   Wed, 4 May 2022 15:31:07 -0700
From:   Matthias Kaehlcke <mka@...omium.org>
To:     Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>
Cc:     agross@...nel.org, bjorn.andersson@...aro.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 v13 4/4] arm64: dts: qcom: sc7280-herobrine: Add lpi
 pinmux properties for CRD 3.0/3.1

On Wed, May 04, 2022 at 04:46:27PM +0530, Srinivasa Rao Mandadapu wrote:
> Add LPASS LPI pinctrl properties, which are required for Audio
> functionality on herobrine based platforms of rev5+
> (aka CRD 3.0/3.1) boards.
> 
> 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-herobrine-crd.dts | 63 +++++++++++++++++++++++
>  1 file changed, 63 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sc7280-herobrine-crd.dts b/arch/arm64/boot/dts/qcom/sc7280-herobrine-crd.dts
> index deaea3a..dc61bad 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280-herobrine-crd.dts
> +++ b/arch/arm64/boot/dts/qcom/sc7280-herobrine-crd.dts
> @@ -110,6 +110,69 @@ ap_ts_pen_1v8: &i2c13 {
>   * - If a pin is totally internal to Qcard then it gets Qcard name.
>   * - If a pin is not hooked up on Qcard, it gets no name.
>   */
> +&lpass_dmic01_clk {
> +	drive-strength = <8>;
> +	bias-disable;
> +};
> +
> +&lpass_dmic01_data {
> +	bias-pull-down;
> +};
> +
> +&lpass_dmic01_clk_sleep {
> +	drive-strength = <2>;
> +};

should be after 'lpass_dmic01_clk'

> +
> +&lpass_dmic23_clk {
> +	drive-strength = <8>;
> +	bias-disable;
> +};
> +
> +&lpass_dmic23_data {
> +	bias-pull-down;
> +};
> +
> +&lpass_dmic23_clk_sleep {
> +	drive-strength = <2>;
> +};

see above

> +
> +&lpass_rx_swr_clk {
> +	drive-strength = <2>;
> +	slew-rate = <1>;
> +	bias-disable;
> +};
> +
> +&lpass_rx_swr_data {
> +	drive-strength = <2>;
> +	slew-rate = <1>;
> +	bias-bus-hold;
> +};
> +
> +&lpass_rx_swr_clk_sleep {
> +	drive-strength = <2>;

drive strengh is the same as for 'lpass_rx_swr_clk', can be omitted?

> +	bias-pull-down;
> +};

see 'lpass_dmic23_clk_sleep'

> +
> +&lpass_rx_swr_data_sleep {
> +	drive-strength = <2>;

is drive strength really needed here?

> +	bias-pull-down;
> +};
> +
> +&lpass_tx_swr_clk {
> +	drive-strength = <2>;
> +	slew-rate = <1>;
> +	bias-disable;
> +};
> +
> +&lpass_tx_swr_data {
> +	slew-rate = <1>;
> +	bias-bus-hold;
> +};
> +
> +&lpass_tx_swr_clk_sleep {
> +	drive-strength = <2>;

is drive strength really needed here?

> +	bias-pull-down;
> +};

see 'lpass_dmic23_clk_sleep'

>  
>  &mi2s1_data0 {
>  	drive-strength = <6>;
> -- 
> 2.7.4
>