Subject: Re: [PATCH 4/7] clk: imx: imx8qxp: Enable SCU and LPCG clocks for I2C in CM40 SS

From: Shawn Guo <[email-masked]>
Date: Tue, 10 Mar 2020 11:45:11 +0800

On Mon, Feb 17, 2020 at 11:19:18AM +0800, Joakim Zhang wrote:
> Enable SCU and LPCG clocks for I2C in CM40 SS.
> 
> Signed-off-by: Joakim Zhang <[email-masked]>

So you decided to stop waiting for Aisheng's new imx8qxp clock driver?

Shawn

> ---
>  drivers/clk/imx/clk-imx8qxp-lpcg.c | 12 ++++++++++++
>  drivers/clk/imx/clk-imx8qxp-lpcg.h |  3 +++
>  drivers/clk/imx/clk-imx8qxp.c      |  4 ++++
>  3 files changed, 19 insertions(+)
> 
> diff --git a/drivers/clk/imx/clk-imx8qxp-lpcg.c b/drivers/clk/imx/clk-imx8qxp-lpcg.c
> index 04c8ee35e14c..795909ecfba6 100644
> --- a/drivers/clk/imx/clk-imx8qxp-lpcg.c
> +++ b/drivers/clk/imx/clk-imx8qxp-lpcg.c
> @@ -151,6 +151,17 @@ static const struct imx8qxp_lpcg_data imx8qxp_lpcg_lsio[] = {
>  	{ IMX_LSIO_LPCG_PWM6_IPG_MSTR_CLK, "pwm6_lpcg_ipg_mstr_clk", "pwm6_clk", 0, LSIO_PWM_6_LPCG, 24, 0, },
>  };
>  
> +static const struct imx8qxp_lpcg_data imx8qxp_lpcg_cm40[] = {
> +	{ IMX_CM40_LPCG_I2C_CLK, "cm40_lpcg_i2c_clk", "cm40_i2c_clk", 0, CM40_I2C_LPCG, 0, 0, },
> +	{ IMX_CM40_LPCG_I2C_IPG_CLK, "cm40_lpcg_i2c_ipg_clk", "cm40_ipg_clk_root", 0, CM40_I2C_LPCG, 16, 0, },
> +};
> +
> +static const struct imx8qxp_ss_lpcg imx8qxp_ss_cm40 = {
> +	.lpcg = imx8qxp_lpcg_cm40,
> +	.num_lpcg = ARRAY_SIZE(imx8qxp_lpcg_cm40),
> +	.num_max = IMX_CM40_LPCG_CLK_END,
> +};
> +
>  static const struct imx8qxp_ss_lpcg imx8qxp_ss_lsio = {
>  	.lpcg = imx8qxp_lpcg_lsio,
>  	.num_lpcg = ARRAY_SIZE(imx8qxp_lpcg_lsio),
> @@ -219,6 +230,7 @@ static const struct of_device_id imx8qxp_lpcg_match[] = {
>  	{ .compatible = "fsl,imx8qxp-lpcg-adma", &imx8qxp_ss_adma, },
>  	{ .compatible = "fsl,imx8qxp-lpcg-conn", &imx8qxp_ss_conn, },
>  	{ .compatible = "fsl,imx8qxp-lpcg-lsio", &imx8qxp_ss_lsio, },
> +	{ .compatible = "fsl,imx8qxp-lpcg-cm40", &imx8qxp_ss_cm40, },
>  	{ /* sentinel */ }
>  };
>  
> diff --git a/drivers/clk/imx/clk-imx8qxp-lpcg.h b/drivers/clk/imx/clk-imx8qxp-lpcg.h
> index 2a37ce57c500..28ca730dd135 100644
> --- a/drivers/clk/imx/clk-imx8qxp-lpcg.h
> +++ b/drivers/clk/imx/clk-imx8qxp-lpcg.h
> @@ -99,4 +99,7 @@
>  #define ADMA_FLEXCAN_1_LPCG		0x1ce0000
>  #define ADMA_FLEXCAN_2_LPCG		0x1cf0000
>  
> +/* CM40 SS */
> +#define CM40_I2C_LPCG			0x60000
> +
>  #endif /* _IMX8QXP_LPCG_H */
> diff --git a/drivers/clk/imx/clk-imx8qxp.c b/drivers/clk/imx/clk-imx8qxp.c
> index 5e2903efc488..d051073ff042 100644
> --- a/drivers/clk/imx/clk-imx8qxp.c
> +++ b/drivers/clk/imx/clk-imx8qxp.c
> @@ -53,6 +53,7 @@ static int imx8qxp_clk_probe(struct platform_device *pdev)
>  	clks[IMX_HSIO_PER_CLK]		= clk_hw_register_fixed_rate(NULL, "hsio_per_clk_root", NULL, 0, 133333333);
>  	clks[IMX_LSIO_MEM_CLK]		= clk_hw_register_fixed_rate(NULL, "lsio_mem_clk_root", NULL, 0, 200000000);
>  	clks[IMX_LSIO_BUS_CLK]		= clk_hw_register_fixed_rate(NULL, "lsio_bus_clk_root", NULL, 0, 100000000);
> +	clks[IMX_CM40_IPG_CLK]		= clk_hw_register_fixed_rate(NULL, "cm40_ipg_clk_root", NULL, 0, 132000000);
>  
>  	/* ARM core */
>  	clks[IMX_A35_CLK]		= imx_clk_scu("a35_clk", IMX_SC_R_A35, IMX_SC_PM_CLK_CPU);
> @@ -128,6 +129,9 @@ static int imx8qxp_clk_probe(struct platform_device *pdev)
>  	clks[IMX_GPU0_CORE_CLK]		= imx_clk_scu("gpu_core0_clk",	 IMX_SC_R_GPU_0_PID0, IMX_SC_PM_CLK_PER);
>  	clks[IMX_GPU0_SHADER_CLK]	= imx_clk_scu("gpu_shader0_clk", IMX_SC_R_GPU_0_PID0, IMX_SC_PM_CLK_MISC);
>  
> +	/* CM40 SS */
> +	clks[IMX_CM40_I2C_CLK]		= imx_clk_scu("cm40_i2c_clk", IMX_SC_R_M4_0_I2C, IMX_SC_PM_CLK_PER);
> +
>  	for (i = 0; i < clk_data->num; i++) {
>  		if (IS_ERR(clks[i]))
>  			pr_warn("i.MX clk %u: register failed with %ld\n",
> -- 
> 2.17.1
> 

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