linux-kernel - Re: [PATCH v4 8/8] clk: qcom: Add GPU clock controller driver for SM6115

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Date:   Tue, 31 Jan 2023 11:25:02 +0200
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>,
        linux-arm-msm@...r.kernel.org, andersson@...nel.org,
        agross@...nel.org, krzysztof.kozlowski@...aro.org
Cc:     marijn.suijten@...ainline.org,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, linux-kernel@...r.kernel.org,
        linux-clk@...r.kernel.org
Subject: Re: [PATCH v4 8/8] clk: qcom: Add GPU clock controller driver for
 SM6115

On 31/01/2023 01:59, Konrad Dybcio wrote:
> Add support for the GPU clock controller found on SM6115.
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> ---
>   drivers/clk/qcom/Kconfig        |   9 +
>   drivers/clk/qcom/Makefile       |   1 +
>   drivers/clk/qcom/gpucc-sm6115.c | 512 ++++++++++++++++++++++++++++++++
>   3 files changed, 522 insertions(+)
>   create mode 100644 drivers/clk/qcom/gpucc-sm6115.c

[skipped]

> +static int gpu_cc_sm6115_probe(struct platform_device *pdev)
> +{
> +	struct regmap *regmap;
> +	unsigned int value, mask;
> +
> +	regmap = qcom_cc_map(pdev, &gpu_cc_sm6115_desc);
> +	if (IS_ERR(regmap))
> +		return PTR_ERR(regmap);
> +
> +	clk_alpha_pll_configure(&gpu_cc_pll0, regmap, &gpu_cc_pll0_config);
> +	clk_alpha_pll_configure(&gpu_cc_pll1, regmap, &gpu_cc_pll1_config);
> +
> +	/* Recommended WAKEUP/SLEEP settings for the gpu_cc_cx_gmu_clk */
> +	mask = CX_GMU_CBCR_WAKE_MASK << CX_GMU_CBCR_WAKE_SHIFT;
> +	mask |= CX_GMU_CBCR_SLEEP_MASK << CX_GMU_CBCR_SLEEP_SHIFT;
> +	value = 0xf << CX_GMU_CBCR_WAKE_SHIFT | 0xf << CX_GMU_CBCR_SLEEP_SHIFT;
> +	regmap_update_bits(regmap, gpu_cc_cx_gmu_clk.clkr.enable_reg, mask, value);
> +
> +	/* Set up PERIPH/MEM retain on the GPU core clock */
> +	regmap_update_bits(regmap, gpu_cc_gx_gfx3d_clk.halt_reg,
> +			   (BIT(14) | BIT(13)), (BIT(14) | BIT(13)));

But you have your new helpers to set these values, don't you?

> +
> +	return qcom_cc_really_probe(pdev, &gpu_cc_sm6115_desc, regmap);
> +}
> +
> +static struct platform_driver gpu_cc_sm6115_driver = {
> +	.probe = gpu_cc_sm6115_probe,
> +	.driver = {
> +		.name = "sm6115-gpucc",
> +		.of_match_table = gpu_cc_sm6115_match_table,
> +	},
> +};
> +module_platform_driver(gpu_cc_sm6115_driver);
> +
> +MODULE_DESCRIPTION("QTI GPU_CC SM6115 Driver");
> +MODULE_LICENSE("GPL");

-- 
With best wishes
Dmitry