linux-kernel - Re: [PATCH V2 2/5] clk: qcom: apss-ipq-pll: Enable APSS clock driver in IPQ9574

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Date:   Fri, 17 Feb 2023 15:13:53 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Devi Priya <quic_devipriy@...cinc.com>, agross@...nel.org,
        andersson@...nel.org, mturquette@...libre.com, sboyd@...nel.org,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        jassisinghbrar@...il.com, catalin.marinas@....com, will@...nel.org,
        dmitry.baryshkov@...aro.org, arnd@...db.de,
        geert+renesas@...der.be, nfraprado@...labora.com,
        broonie@...nel.org, rafal@...ecki.pl,
        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
Subject: Re: [PATCH V2 2/5] clk: qcom: apss-ipq-pll: Enable APSS clock driver
 in IPQ9574



On 17.02.2023 14:41, Devi Priya wrote:
The subject is.. weird.. something like:

clk: qcom: apss-ipq-pll: add support for IPQ9574

would have made more sense, as you're not enabling the clock
driver, and certainly not *in* the SoC.

> Add the compatible and configuration values
Generally the lines in commit messages should be broken at 70-75
chars, not 40.

> for A73 Huayra PLL found on IPQ9574
> 
> Co-developed-by: Praveenkumar I <quic_ipkumar@...cinc.com>
> Signed-off-by: Praveenkumar I <quic_ipkumar@...cinc.com>
Is Praveenkumar's last name "I"?

> Signed-off-by: Devi Priya <quic_devipriy@...cinc.com>
> ---
Otherwise the code looks good, I think.

Konrad
>  Changes in V2:
> 	- Rebased the changes on the below series which refactors the
> 	  driver to accommodate Huayra & Stromer Plus PLLs
> 	  https://lore.kernel.org/linux-arm-msm/20230217083308.12017-2-quic_kathirav@quicinc.com/
> 	- Changed the hex value in ipq9574_pll_config to lowercase
> 	- Dropped the mailbox driver changes as ipq9574 mailbox is 
> 	  compatible with ipq6018
> 
>  drivers/clk/qcom/apss-ipq-pll.c | 19 +++++++++++++++++++
>  1 file changed, 19 insertions(+)
> 
> diff --git a/drivers/clk/qcom/apss-ipq-pll.c b/drivers/clk/qcom/apss-ipq-pll.c
> index cf4f0d340cbf..ce28d882ee78 100644
> --- a/drivers/clk/qcom/apss-ipq-pll.c
> +++ b/drivers/clk/qcom/apss-ipq-pll.c
> @@ -111,6 +111,18 @@ 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,
> +	.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,
> +};
> +
>  struct apss_pll_data {
>  	int pll_type;
>  	struct clk_alpha_pll *pll;
> @@ -135,6 +147,12 @@ static struct apss_pll_data ipq6018_pll_data = {
>  	.pll_config = &ipq6018_pll_config,
>  };
>  
> +static struct apss_pll_data ipq9574_pll_data = {
> +	.pll_type = CLK_ALPHA_PLL_TYPE_HUAYRA,
> +	.pll = &ipq_pll_huayra,
> +	.pll_config = &ipq9574_pll_config,
> +};
> +
>  static const struct regmap_config ipq_pll_regmap_config = {
>  	.reg_bits		= 32,
>  	.reg_stride		= 4,
> @@ -180,6 +198,7 @@ static const struct of_device_id apss_ipq_pll_match_table[] = {
>  	{ .compatible = "qcom,ipq5332-a53pll", .data = &ipq5332_pll_data },
>  	{ .compatible = "qcom,ipq6018-a53pll", .data = &ipq6018_pll_data },
>  	{ .compatible = "qcom,ipq8074-a53pll", .data = &ipq8074_pll_data },
> +	{ .compatible = "qcom,ipq9574-a73pll", .data = &ipq9574_pll_data },
>  	{ }
>  };
>  MODULE_DEVICE_TABLE(of, apss_ipq_pll_match_table);