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

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Message-ID: <32ca2bd2-f928-ff23-5d57-4399c2e50c39@quicinc.com>
Date:   Fri, 27 Jan 2023 21:13:35 +0530
From:   Devi Priya <quic_devipriy@...cinc.com>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>, <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 1/13/2023 8:42 PM, Konrad Dybcio wrote:
> 
> 
> 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.
> 
Sure, okay
> 
>>
>> 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.
Okay
> 
>> +	.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).
> 
Sure, will split the file changes in V2

>>   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
Okay
>> +
>>   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 },
Best Regards,
Devi Priya