linux-kernel - Re: [PATCH v3 2/7] mailbox: qcom: Add support for SDX65 APCS IPC

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Date:   Mon, 21 Feb 2022 11:05:14 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     Rohit Agarwal <quic_rohiagar@...cinc.com>
Cc:     agross@...nel.org, bjorn.andersson@...aro.org,
        mturquette@...libre.com, sboyd@...nel.org, robh+dt@...nel.org,
        jassisinghbrar@...il.com, linux-arm-msm@...r.kernel.org,
        linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 2/7] mailbox: qcom: Add support for SDX65 APCS IPC

On Mon, Feb 21, 2022 at 10:52:28AM +0530, Rohit Agarwal wrote:
> In SDX65, the IPC bits are located in the APCS GCC block. Also, this block
> can provide clock functionality. Hence, add support for IPC with correct
> offset and name of the clock provider.
> 
> Signed-off-by: Rohit Agarwal <quic_rohiagar@...cinc.com>
> ---
>  drivers/mailbox/qcom-apcs-ipc-mailbox.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/mailbox/qcom-apcs-ipc-mailbox.c b/drivers/mailbox/qcom-apcs-ipc-mailbox.c
> index 9325d2a..54d7659 100644
> --- a/drivers/mailbox/qcom-apcs-ipc-mailbox.c
> +++ b/drivers/mailbox/qcom-apcs-ipc-mailbox.c
> @@ -53,6 +53,10 @@ static const struct qcom_apcs_ipc_data sdx55_apcs_data = {
>  	.offset = 0x1008, .clk_name = "qcom-sdx55-acps-clk"
>  };
>  
> +static const struct qcom_apcs_ipc_data sdx65_apcs_data = {
> +	.offset = 0x1008, .clk_name = "qcom-sdx55-acps-clk"
> +};

What I suggested was reusing the "qcom,sdx55-apcs-gcc" compatible in devicetree.
So with that, you won't need this specific compatible for SDX65 that essentially
duplicates SDX55.

Thanks,
Mani

> +
>  static const struct regmap_config apcs_regmap_config = {
>  	.reg_bits = 32,
>  	.reg_stride = 4,
> @@ -159,6 +163,7 @@ static const struct of_device_id qcom_apcs_ipc_of_match[] = {
>  	{ .compatible = "qcom,sm8150-apss-shared", .data = &apps_shared_apcs_data },
>  	{ .compatible = "qcom,sm6115-apcs-hmss-global", .data = &msm8994_apcs_data },
>  	{ .compatible = "qcom,sdx55-apcs-gcc", .data = &sdx55_apcs_data },
> +	{ .compatible = "qcom,sdx65-apcs-gcc", .data = &sdx65_apcs_data },
>  	{}
>  };
>  MODULE_DEVICE_TABLE(of, qcom_apcs_ipc_of_match);
> -- 
> 2.7.4
>