[PATCH 21/27] phy: rockchip-inno-usb2: Add RK3572 support

[Manivannan Sadhasivam]

On 2026-10-22 00:11 +0800, Cunhao Lu wrote:
> Support both RK3572 USB2 PHY instances.
> 
> Signed-off-by: Cunhao Lu <1579567540 at qq.com>

Nitpicks below. With those fixed,

Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam at oss.qualcomm.com>

> ---
>  drivers/phy/rockchip/phy-rockchip-inno-usb2.c | 136 ++++++++++++++++++++++++++
>  1 file changed, 136 insertions(+)
> 
> diff --git a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
> index 7d8a533f24aea..16a36e68cb6d3 100644
> --- a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
> +++ b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
> @@ -1544,6 +1544,49 @@ static int rk3528_usb2phy_tuning(struct rockchip_usb2phy *rphy)
>  	return 0;
>  }
>  
> +static int rk3572_usb2phy_tuning(struct rockchip_usb2phy *rphy)
> +{
> +	u32 reg = rphy->phy_cfg->reg;
> +	struct clk *refclk;
> +	unsigned long rate;
> +	u32 val;
> +	int ret;
> +
> +	refclk = devm_clk_get(rphy->dev, "phyclk");
> +	if (IS_ERR(refclk))
> +		return PTR_ERR(refclk);

Please insert a newline between each operation to improve readability.

> +	rate = clk_get_rate(refclk);
> +	if (rate != 24000000 && rate != 26000000)
> +		return -EINVAL;
> +
> +	ret = regmap_write(rphy->grf, reg + 0x0004,
> +			   GENMASK(18, 16) | (rate == 24000000 ? 2 : 6));
> +	if (ret)
> +		return ret;
> +
> +	ret = regmap_read(rphy->grf, reg + 0x0010, &val);
> +	if (ret)
> +		return ret;
> +	if (val & BIT(13)) {
> +		ret = regmap_write(rphy->grf, reg + 0x0010, BIT(29));
> +		if (ret)
> +			return ret;
> +		ret = rockchip_usb2phy_reset(rphy);
> +		if (ret)
> +			return ret;
> +	}
> +
> +	/* Set the normal line-state filter interval. */
> +	ret = regmap_write(rphy->grf, reg + 0x0020, 0x30100);
> +	if (ret)
> +		return ret;

Here.

> +	/* Increase HS voltage by 5.89% and double pre-emphasis current. */
> +	ret = regmap_write(rphy->grf, reg + 0x000c, GENMASK(27, 24) | 0x0900);
> +	if (ret)
> +		return ret;

And here.

- Mani