Re: [PATCH 2/2] clk: qcom: dispcc-eliza: Add Eliza display clock controller support
From: Krzysztof Kozlowski
Date: Tue Mar 17 2026 - 06:33:05 EST
On 17/03/2026 11:22, Konrad Dybcio wrote:
> On 3/17/26 11:06 AM, Krzysztof Kozlowski wrote:
>> Add a drvier for the display clock controller on Qualcomm Eliza SoC,
>> which is copied from SM8750 driver plus changes:
>>
>> 1. Additional DT_HDMI_PHY_PLL_CLK clock input,
>> 2. Eight new HDMI clocks,
>> 3. Different PLLs (lucid and pongo).
>>
>> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxxxxxxxx>
>> ---
>
> [...]
>
>> +static int disp_cc_eliza_probe(struct platform_device *pdev)
>> +{
>> + struct regmap *regmap;
>> + int ret;
>> +
>> + ret = devm_pm_runtime_enable(&pdev->dev);
>
> -> qcom_cc_desc.use_rpm
>
>> + if (ret)
>> + return ret;
>> +
>> + ret = pm_runtime_resume_and_get(&pdev->dev);
>> + if (ret)
>> + return ret;
>> +
>> + regmap = qcom_cc_map(pdev, &disp_cc_eliza_desc);
>> + if (IS_ERR(regmap)) {
>> + ret = PTR_ERR(regmap);
>> + goto err_put_rpm;
>> + }
>> +
>> + clk_lucid_ole_pll_configure(&disp_cc_pll0, regmap, &disp_cc_pll0_config);
>> + clk_lucid_ole_pll_configure(&disp_cc_pll1, regmap, &disp_cc_pll1_config);
>> + clk_pongo_elu_pll_configure(&disp_cc_pll2, regmap, &disp_cc_pll2_config);
>
> -> qcom_cc_driver_data.alpha_plls
>
>> +
>> + /* Enable clock gating for MDP clocks */
>> + regmap_update_bits(regmap, DISP_CC_MISC_CMD, 0x10, 0x10);
>> +
>> + /* Keep some clocks always-on */
>> + qcom_branch_set_clk_en(regmap, 0xe07c); /* DISP_CC_SLEEP_CLK */
>> + qcom_branch_set_clk_en(regmap, 0xe05c); /* DISP_CC_XO_CLK */
>> + qcom_branch_set_clk_en(regmap, 0xc00c); /* DISP_CC_MDSS_RSCC_AHB_CLK */
>> + qcom_branch_set_clk_en(regmap, 0xc008); /* DISP_CC_MDSS_RSCC_VSYNC_CLK */
>
> -> qcom_cc_driver_data.clk_regs_configure
>
Ack, I took a bit older driver as starting point but should take Kaanapali.
Best regards,
Krzysztof