linux-kernel - Re: [PATCH 3/7] clk: qcom: Add DISPCC driver support for SM4450

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Date: Sun, 31 Mar 2024 04:28:26 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Ajit Pandey <quic_ajipan@...cinc.com>
Cc: Michael Turquette <mturquette@...libre.com>, Stephen Boyd <sboyd@...nel.org>, 
	Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
	Conor Dooley <conor+dt@...nel.org>, Bjorn Andersson <andersson@...nel.org>, 
	Konrad Dybcio <konrad.dybcio@...aro.org>, Vinod Koul <vkoul@...nel.org>, 
	Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>, linux-arm-msm@...r.kernel.org, 
	linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Taniya Das <quic_tdas@...cinc.com>, Jagadeesh Kona <quic_jkona@...cinc.com>, 
	Imran Shaik <quic_imrashai@...cinc.com>, 
	Satya Priya Kakitapalli <quic_skakitap@...cinc.com>
Subject: Re: [PATCH 3/7] clk: qcom: Add DISPCC driver support for SM4450

On Sat, 30 Mar 2024 at 20:29, Ajit Pandey <quic_ajipan@...cinc.com> wrote:
>
> Add Display Clock Controller (DISPCC) support for SM4450 platform.
>
> Signed-off-by: Ajit Pandey <quic_ajipan@...cinc.com>
> ---
>  drivers/clk/qcom/Kconfig         |  10 +
>  drivers/clk/qcom/Makefile        |   1 +
>  drivers/clk/qcom/dispcc-sm4450.c | 781 +++++++++++++++++++++++++++++++
>  3 files changed, 792 insertions(+)
>  create mode 100644 drivers/clk/qcom/dispcc-sm4450.c
>

[skipped]

> +static int disp_cc_sm4450_probe(struct platform_device *pdev)
> +{
> +       struct regmap *regmap;

Is there a MMCX power domain on the platform? See how other dispcc
drivers handle pm_runtime status.

> +
> +       regmap = qcom_cc_map(pdev, &disp_cc_sm4450_desc);
> +       if (IS_ERR(regmap))
> +               return PTR_ERR(regmap);
> +
> +       clk_lucid_evo_pll_configure(&disp_cc_pll0, regmap, &disp_cc_pll0_config);
> +       clk_lucid_evo_pll_configure(&disp_cc_pll1, regmap, &disp_cc_pll1_config);
> +
> +       /* Keep some clocks always enabled */
> +       qcom_branch_set_clk_en(regmap, 0xe070); /* DISP_CC_SLEEP_CLK */
> +       qcom_branch_set_clk_en(regmap, 0xe054); /* DISP_CC_XO_CLK */
> +
> +       return qcom_cc_really_probe(pdev, &disp_cc_sm4450_desc, regmap);
> +}
> +
> +static struct platform_driver disp_cc_sm4450_driver = {
> +       .probe = disp_cc_sm4450_probe,
> +       .driver = {
> +               .name = "dispcc-sm4450",
> +               .of_match_table = disp_cc_sm4450_match_table,
> +       },
> +};
> +
> +module_platform_driver(disp_cc_sm4450_driver);
> +
> +MODULE_DESCRIPTION("QTI DISPCC SM4450 Driver");
> +MODULE_LICENSE("GPL");
> --
> 2.25.1
>
>


-- 
With best wishes
Dmitry