Re: [PATCH V8 02/12] phy: freescale: add Samsung HDMI PHY

[Luca Ceresoli]

On Sat,  3 Feb 2024 10:52:42 -0600
Adam Ford <aford173@xxxxxxxxx> wrote:

> From: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
> 
> This adds the driver for the Samsung HDMI PHY found on the
> i.MX8MP SoC.
> 
> Signed-off-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
> Signed-off-by: Adam Ford <aford173@xxxxxxxxx>
> Tested-by: Alexander Stein <alexander.stein@xxxxxxxxxxxxxxx>

[...]

> +#define PHY_REG_33		0x84
> +#define  REG33_MODE_SET_DONE	BIT(7)
> +#define  REG33_FIX_DA		BIT(1)
> +
> +#define PHY_REG_34		0x88
> +#define  REG34_PHY_READY	BIT(7)
> +#define  REG34_PLL_LOCK		BIT(6)
> +#define  REG34_PHY_CLK_READY	BIT(5)
> +
> +

Nitpick: only one empty line here.

> +#define PHY_PLL_REGS_NUM 48

[...]

> +static int phy_clk_register(struct fsl_samsung_hdmi_phy *phy)
> +{
> +	struct device *dev = phy->dev;
> +	struct device_node *np = dev->of_node;
> +	struct clk_init_data init;
> +	const char *parent_name;
> +	struct clk *phyclk;
> +	int ret;
> +
> +	parent_name = __clk_get_name(phy->refclk);
> +
> +	init.parent_names = &parent_name;
> +	init.num_parents = 1;
> +	init.flags = 0;
> +	init.name = "hdmi_pclk";
> +	init.ops = &phy_clk_ops;
> +
> +	phy->hw.init = &init;
> +
> +	phyclk = devm_clk_register(dev, &phy->hw);
> +	if (IS_ERR(phyclk))
> +		return dev_err_probe(dev, PTR_ERR(phyclk),
> +				     "failed to register clock\n");
> +
> +	ret = of_clk_add_provider(np, of_clk_src_simple_get, phyclk);

Ouch:

> This function is *deprecated*. Use of_clk_add_hw_provider() instead.

Appears as an easy replacement though.

Otherwise looks good.

Luca

-- 
Luca Ceresoli, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com