linux-kernel - Re: [PATCH 6/6] clk: qcom: apss-ipq-pll: add support for IPQ8074

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Date:   Mon, 11 Jul 2022 15:51:45 +0300
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Robert Marko <robimarko@...il.com>
Cc:     bjorn.andersson@...aro.org, agross@...nel.org,
        konrad.dybcio@...ainline.org, mturquette@...libre.com,
        sboyd@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, sivaprak@...eaurora.org,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 6/6] clk: qcom: apss-ipq-pll: add support for IPQ8074

On Mon, 11 Jul 2022 at 14:22, Robert Marko <robimarko@...il.com> wrote:
>
> Add support for IPQ8074 since it uses the same PLL setup, however it does
> not require the Alpha PLL to be reconfigured.
>
> Signed-off-by: Robert Marko <robimarko@...il.com>
> ---
>  drivers/clk/qcom/apss-ipq-pll.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/clk/qcom/apss-ipq-pll.c b/drivers/clk/qcom/apss-ipq-pll.c
> index bef7899ad0d6..acfb3ec4f142 100644
> --- a/drivers/clk/qcom/apss-ipq-pll.c
> +++ b/drivers/clk/qcom/apss-ipq-pll.c
> @@ -55,6 +55,7 @@ static const struct regmap_config ipq_pll_regmap_config = {
>  static int apss_ipq_pll_probe(struct platform_device *pdev)
>  {
>         struct device *dev = &pdev->dev;
> +       struct device_node *node = dev->of_node;
>         struct regmap *regmap;
>         void __iomem *base;
>         int ret;
> @@ -67,7 +68,8 @@ static int apss_ipq_pll_probe(struct platform_device *pdev)
>         if (IS_ERR(regmap))
>                 return PTR_ERR(regmap);
>
> -       clk_alpha_pll_configure(&ipq_pll, regmap, &ipq_pll_config);
> +       if (of_device_is_compatible(node, "qcom,ipq6018-a53pll"))
> +               clk_alpha_pll_configure(&ipq_pll, regmap, &ipq_pll_config);

I'd suggest having the 8074 config here too. It seems logical to me to
make sure that the pll is configured correctly.

>
>         ret = devm_clk_register_regmap(dev, &ipq_pll.clkr);
>         if (ret)
> @@ -79,6 +81,7 @@ 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" },
> +       { .compatible = "qcom,ipq8074-a53pll" },
>         { }
>  };
>  MODULE_DEVICE_TABLE(of, apss_ipq_pll_match_table);
> --
> 2.36.1
>


-- 
With best wishes
Dmitry