On Thu, Mar 06, 2025 at 09:09:46PM +0000, Jonas Karlman wrote:
> All Rockchip GMAC variants require writing to GRF to configure e.g.
> interface mode and MAC rx/tx delay. The GRF syscon regmap is located
> with help of a rockchip,grf and rockchip,php-grf phandle.
> @@ -1813,8 +1564,24 @@ static struct rk_priv_data *rk_gmac_setup(struct platform_device *pdev,
>
> bsp_priv->grf = syscon_regmap_lookup_by_phandle(dev->of_node,
> "rockchip,grf");
> - bsp_priv->php_grf = syscon_regmap_lookup_by_phandle(dev->of_node,
> - "rockchip,php-grf");
> + if (IS_ERR(bsp_priv->grf)) {
> + ret = PTR_ERR(bsp_priv->grf);
> + dev_err_probe(dev, ret, "failed to lookup rockchip,grf\n");
> + return ERR_PTR(ret);
> + }
> +
> + bsp_priv->php_grf =
> + syscon_regmap_lookup_by_phandle_optional(dev->of_node,
> + "rockchip,php-grf");
> + if ((of_device_is_compatible(dev->of_node, "rockchip,rk3588-gmac") ||
> + of_device_is_compatible(dev->of_node, "rockchip,rk3576-gmac")) &&
> + !bsp_priv->php_grf)
> + bsp_priv->php_grf = ERR_PTR(-ENODEV);
It seems odd you say all variants need this property, and then you
look for two specific variants here and do something different? Why
are these two special?
Andrew
