Commit 332184ad authored by Heiko Stuebner's avatar Heiko Stuebner Committed by Kishon Vijay Abraham I

phy: rockchip-emmc: should be a child device of the GRF

The emmc-phy is fully enclosed in the general register files (GRF).
Therefore as seen from the device-tree it shouldn't be a separate platform-
device but instead a sub-device of the GRF - using the simply-mfd mechanism.

The driver entered the kernel in the current merge-window, so we can still
adapt the binding without needing a fallback, as the binding hasn't been
released with a full kernel yet.
Signed-off-by: default avatarHeiko Stuebner <heiko@sntech.de>
Acked-by: default avatarRob Herring <robh@kernel.org>
Reviewed-by: default avatarShawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: default avatarKishon Vijay Abraham I <kishon@ti.com>
parent 0311c76e
...@@ -3,17 +3,21 @@ Rockchip EMMC PHY ...@@ -3,17 +3,21 @@ Rockchip EMMC PHY
Required properties: Required properties:
- compatible: rockchip,rk3399-emmc-phy - compatible: rockchip,rk3399-emmc-phy
- rockchip,grf : phandle to the syscon managing the "general
register files"
- #phy-cells: must be 0 - #phy-cells: must be 0
- reg: PHY configure reg address offset in "general - reg: PHY configure reg address offset in "general
register files" register files"
Example: Example:
emmcphy: phy {
compatible = "rockchip,rk3399-emmc-phy"; grf: syscon@ff770000 {
rockchip,grf = <&grf>; compatible = "rockchip,rk3399-grf", "syscon", "simple-mfd";
reg = <0xf780>;
#phy-cells = <0>; ...
emmcphy: phy@f780 {
compatible = "rockchip,rk3399-emmc-phy";
reg = <0xf780>;
#phy-cells = <0>;
};
}; };
...@@ -176,7 +176,10 @@ static int rockchip_emmc_phy_probe(struct platform_device *pdev) ...@@ -176,7 +176,10 @@ static int rockchip_emmc_phy_probe(struct platform_device *pdev)
struct regmap *grf; struct regmap *grf;
unsigned int reg_offset; unsigned int reg_offset;
grf = syscon_regmap_lookup_by_phandle(dev->of_node, "rockchip,grf"); if (!dev->parent || !dev->parent->of_node)
return -ENODEV;
grf = syscon_node_to_regmap(dev->parent->of_node);
if (IS_ERR(grf)) { if (IS_ERR(grf)) {
dev_err(dev, "Missing rockchip,grf property\n"); dev_err(dev, "Missing rockchip,grf property\n");
return PTR_ERR(grf); return PTR_ERR(grf);
......
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