linux-kernel - Re: [PATCH V2 5/9] clk: qcom: add Global Clock controller (GCC) driver for IPQ5332 SoC

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Date:   Tue, 31 Jan 2023 13:09:46 -0800
From:   Stephen Boyd <sboyd@...nel.org>
To:     Kathiravan Thirumoorthy <quic_kathirav@...cinc.com>,
        agross@...nel.org, andersson@...nel.org, arnd@...db.de,
        catalin.marinas@....com, devicetree@...r.kernel.org,
        dmitry.baryshkov@...aro.org, konrad.dybcio@...aro.org,
        krzysztof.kozlowski+dt@...aro.org, linus.walleij@...aro.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        marcel.ziswiler@...adex.com, mturquette@...libre.com,
        nfraprado@...labora.com, quic_gurus@...cinc.com,
        robh+dt@...nel.org, robimarko@...il.com, shawnguo@...nel.org,
        will@...nel.org
Cc:     Kathiravan T <quic_kathirav@...cinc.com>
Subject: Re: [PATCH V2 5/9] clk: qcom: add Global Clock controller (GCC) driver for IPQ5332 SoC

Quoting Kathiravan Thirumoorthy (2023-01-30 03:46:58)
> diff --git a/drivers/clk/qcom/gcc-ipq5332.c b/drivers/clk/qcom/gcc-ipq5332.c
> new file mode 100644
> index 000000000000..a8ce618bb81b
> --- /dev/null
> +++ b/drivers/clk/qcom/gcc-ipq5332.c
> @@ -0,0 +1,3954 @@
[...]
> +
> +static const struct clk_parent_data gcc_parent_data_xo = { .index = DT_XO };
> +
> +static struct clk_alpha_pll gpll0_main = {
[...]
> +};
> +
> +static const struct parent_map gcc_parent_map_3[] = {
> +       { P_XO, 0 },
> +};
> +
> +static const struct clk_parent_data gcc_parent_data_3[] = {

Isn't this the same as gcc_parent_data_xo?

> +       { .index = DT_XO },
> +};
> +
> +static const struct parent_map gcc_parent_map_4[] = {
> +       { P_XO, 0 },
> +       { P_GPLL0_OUT_MAIN, 1 },
> +       { P_GCC_GPLL0_OUT_MAIN_DIV_CLK_SRC, 4 },
> +       { P_SLEEP_CLK, 6 },
> +};
> +
> +static const struct clk_parent_data gcc_parent_data_4[] = {
> +       { .index = DT_XO },
> +       { .hw = &gpll0.clkr.hw },
> +       { .hw = &gpll0_div2.hw },
[..]
> +
> +static int gcc_ipq5332_probe(struct platform_device *pdev)
> +{
> +       struct regmap *regmap;
> +
> +       regmap = qcom_cc_map(pdev, &gcc_ipq5332_desc);
> +       if (IS_ERR(regmap))
> +               return PTR_ERR(regmap);
> +
> +       return qcom_cc_really_probe(pdev, &gcc_ipq5332_desc, regmap);

If you don't need to write anything in probe you can simply use
qcom_cc_probe().