linux-kernel - Re: [PATCH 2/6] clk: qcom: ipq9574: Enable APSS clock driver

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Message-ID: <9157d3c9-cca2-8694-ffcb-6cafa7b43d84@linaro.org>
Date:   Fri, 13 Jan 2023 16:12:11 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     devi priya <quic_devipriy@...cinc.com>, agross@...nel.org,
        andersson@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, mturquette@...libre.com,
        sboyd@...nel.org, jassisinghbrar@...il.com,
        catalin.marinas@....com, will@...nel.org, shawnguo@...nel.org,
        arnd@...db.de, marcel.ziswiler@...adex.com,
        dmitry.baryshkov@...aro.org, nfraprado@...labora.com,
        broonie@...nel.org, linux-arm-msm@...r.kernel.org,
        linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc:     quic_srichara@...cinc.com, quic_gokulsri@...cinc.com,
        quic_sjaganat@...cinc.com, quic_kathirav@...cinc.com,
        quic_arajkuma@...cinc.com, quic_anusha@...cinc.com,
        quic_poovendh@...cinc.com
Subject: Re: [PATCH 2/6] clk: qcom: ipq9574: Enable APSS clock driver



On 13.01.2023 15:36, devi priya wrote:
> Enable APSS clock driver for IPQ9574 based devices
Please be more descriptive of what you're doing and why
you're doing it.

clk: qcom: apss-ipq-pll: Add IPQ9574 support

Add IPQ9574-specific APSS PLL configuration values.


mailbox: qcom-apcs-ipc: Add IPQ9574 support

Add a compatible for IPQ9574's mailbox. The SoC, similarly
to other IPQs uses the APSS IPQ PLL driver for CPU scaling.


> 
> Co-developed-by: Praveenkumar I <quic_ipkumar@...cinc.com>
> Signed-off-by: Praveenkumar I <quic_ipkumar@...cinc.com>
> Signed-off-by: devi priya <quic_devipriy@...cinc.com>
> ---
>  drivers/clk/qcom/apss-ipq-pll.c         | 13 +++++++++++++
>  drivers/mailbox/qcom-apcs-ipc-mailbox.c |  5 +++++
>  2 files changed, 18 insertions(+)
> 
> diff --git a/drivers/clk/qcom/apss-ipq-pll.c b/drivers/clk/qcom/apss-ipq-pll.c
> index a5aea27eb867..dd0c01bf5a98 100644
> --- a/drivers/clk/qcom/apss-ipq-pll.c
> +++ b/drivers/clk/qcom/apss-ipq-pll.c
> @@ -61,6 +61,18 @@ static const struct alpha_pll_config ipq8074_pll_config = {
>  	.test_ctl_hi_val = 0x4000,
>  };
>  
> +static const struct alpha_pll_config ipq9574_pll_config = {
> +	.l = 0x3b,
> +	.config_ctl_val = 0x200D4828,
Lowercase hex, please.

> +	.config_ctl_hi_val = 0x6,
> +	.early_output_mask = BIT(3),
> +	.aux2_output_mask = BIT(2),
> +	.aux_output_mask = BIT(1),
> +	.main_output_mask = BIT(0),
> +	.test_ctl_val = 0x0,
> +	.test_ctl_hi_val = 0x4000,
> +};
> +
>  static const struct regmap_config ipq_pll_regmap_config = {
>  	.reg_bits		= 32,
>  	.reg_stride		= 4,
> @@ -102,6 +114,7 @@ static int apss_ipq_pll_probe(struct platform_device *pdev)
>  static const struct of_device_id apss_ipq_pll_match_table[] = {
>  	{ .compatible = "qcom,ipq6018-a53pll", .data = &ipq6018_pll_config },
>  	{ .compatible = "qcom,ipq8074-a53pll", .data = &ipq8074_pll_config },
> +	{ .compatible = "qcom,ipq9574-a73pll", .data = &ipq9574_pll_config },
>  	{ }
>  };
These are very small changes, so maybe they'll pass, but generally
it's preferred to split changes per-file if possible (and here it is
possible if you change the APSS PLL driver first and then bind it in
APCS mbox afterwards).

>  MODULE_DEVICE_TABLE(of, apss_ipq_pll_match_table);
> diff --git a/drivers/mailbox/qcom-apcs-ipc-mailbox.c b/drivers/mailbox/qcom-apcs-ipc-mailbox.c
> index 0e9f9cba8668..90e74f9d7cb3 100644
> --- a/drivers/mailbox/qcom-apcs-ipc-mailbox.c
> +++ b/drivers/mailbox/qcom-apcs-ipc-mailbox.c
> @@ -33,6 +33,10 @@ static const struct qcom_apcs_ipc_data ipq6018_apcs_data = {
>  	.offset = 8, .clk_name = "qcom,apss-ipq6018-clk"
>  };
>  
> +static const struct qcom_apcs_ipc_data ipq9574_apcs_data = {
> +	.offset = 8, .clk_name = "qcom,apss-ipq6018-clk"
> +};
Please reuse ipq6018_apcs_data, it's identical.

Konrad
> +
>  static const struct qcom_apcs_ipc_data msm8916_apcs_data = {
>  	.offset = 8, .clk_name = "qcom-apcs-msm8916-clk"
>  };
> @@ -143,6 +147,7 @@ static int qcom_apcs_ipc_remove(struct platform_device *pdev)
>  static const struct of_device_id qcom_apcs_ipc_of_match[] = {
>  	{ .compatible = "qcom,ipq6018-apcs-apps-global", .data = &ipq6018_apcs_data },
>  	{ .compatible = "qcom,ipq8074-apcs-apps-global", .data = &ipq6018_apcs_data },
> +	{ .compatible = "qcom,ipq9574-apcs-apps-global", .data = &ipq9574_apcs_data },
>  	{ .compatible = "qcom,msm8916-apcs-kpss-global", .data = &msm8916_apcs_data },
>  	{ .compatible = "qcom,msm8939-apcs-kpss-global", .data = &msm8916_apcs_data },
>  	{ .compatible = "qcom,msm8953-apcs-kpss-global", .data = &msm8994_apcs_data },