[PATCH v4 06/12] phy: rockchip: inno-usb2: Add support #address_cells = 2

[Kever Yang]

On 2023/2/17 19:58, Jagan Teki wrote:
> New Rockchip devices have the usb phy nodes as standalone devices.
> These nodes have register nodes with #address_cells = 2, but only
> use 32 bit addresses.
>
> Adjust the driver to check if the returned address is "0", and adjust
> the index in that case.
>
> Derived and adjusted the similar change from linux-next with below
>   commit <9c19c531dc98> ("phy: phy-rockchip-inno-usb2: support
>   #address_cells = 2")
>
> Co-developed-by: Manoj Sai <abbaraju.manojsai at amarulasolutions.com>
> Signed-off-by: Manoj Sai <abbaraju.manojsai at amarulasolutions.com>
> Signed-off-by: Jagan Teki <jagan at amarulasolutions.com>
Reviewed-by: Kever Yang <kever.yang at rock-chips.com>

Thanks,
- Kever
> ---
>   drivers/phy/rockchip/phy-rockchip-inno-usb2.c | 11 ++++++++++-
>   1 file changed, 10 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
> index b32a498ea7..a01148db22 100644
> --- a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
> +++ b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
> @@ -179,12 +179,21 @@ static int rockchip_usb2phy_probe(struct udevice *dev)
>   	if (IS_ERR(priv->reg_base))
>   		return PTR_ERR(priv->reg_base);
>   
> -	ret = ofnode_read_u32(dev_ofnode(dev), "reg", &reg);
> +	ret = ofnode_read_u32_index(dev_ofnode(dev), "reg", 0, &reg);
>   	if (ret) {
>   		dev_err(dev, "failed to read reg property (ret = %d)\n", ret);
>   		return ret;
>   	}
>   
> +	/* support address_cells=2 */
> +	if (reg == 0) {
> +		if (ofnode_read_u32_index(dev_ofnode(dev), "reg", 1, &reg)) {
> +			dev_err(dev, "%s must have reg[1]\n",
> +				ofnode_get_name(dev_ofnode(dev)));
> +			return -EINVAL;
> +		}
> +	}
> +
>   	phy_cfgs = (const struct rockchip_usb2phy_cfg *)
>   					dev_get_driver_data(dev);
>   	if (!phy_cfgs)