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phy: Be able to get phy from PHY provider

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In case of phy are provided from a PHY provider nodes as following:

usbphyc: usb-phy@5a006000 {
	compatible = "st,stm32mp1-usbphyc";
	reg = <0x5a006000 0x1000>;
	clocks = <&rcc_clk USBPHY_K>;
	resets = <&rcc_rst USBPHY_R>;
	#address-cells = <1>;
	#size-cells = <0>;

	usbphyc_port0: usb-phy@0 {
		reg = <0>;
		phy-supply = <&vdd_usb>;
		vdda1v1-supply = <&reg11>;
		vdda1v8-supply = <&reg18>
		#phy-cells = <0>;
	};

	usbphyc_port1: usb-phy@1 {
		reg = <1>;
		phy-supply = <&vdd_usb>;
		vdda1v1-supply = <&reg11>;
		vdda1v8-supply = <&reg18>
		#phy-cells = <1>;
	};
};

and PHY are called as following:

usbh_ehci: usbh-ehci@5800d000 {
	compatible = "generic-ehci";
	reg = <0x5800d000 0x1000>;
	clocks = <&rcc_clk USBH>;
	resets = <&rcc_rst USBH_R>;
	interrupts = <GIC_SPI 75 IRQ_TYPE_NONE>;
	companion = <&usbh_ohci>;
	phys = <&usbphyc_port0>;
	phy-names = "usb";
	status = "okay";
};

generic_phy_get_by_index() must be updated to first look for
PHY phandle as previously and in case of error looks for PHY
provider by finding the parent's current node which is the PHY
provider.
args (ofnode_phandle_args struct) must also be updated by inserting
the phy index into the PHY provider as args[0].

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
This commit is contained in:
Patrice Chotard 2018-06-27 11:55:42 +02:00 committed by Tom Rini
parent 7d118161bb
commit a1b2faed7c
1 changed files with 15 additions and 2 deletions
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17
drivers/phy/phy-uclass.c
View file

@ -36,8 +36,8 @@ int generic_phy_get_by_index(struct udevice *dev, int index,
{ {
struct ofnode_phandle_args args; struct ofnode_phandle_args args;
struct phy_ops *ops; struct phy_ops *ops;
int ret;
struct udevice *phydev; struct udevice *phydev;
int i, ret;
debug("%s(dev=%p, index=%d, phy=%p)\n", __func__, dev, index, phy); debug("%s(dev=%p, index=%d, phy=%p)\n", __func__, dev, index, phy);
@ -55,7 +55,20 @@ int generic_phy_get_by_index(struct udevice *dev, int index,
if (ret) { if (ret) {
debug("%s: uclass_get_device_by_ofnode failed: err=%d\n", debug("%s: uclass_get_device_by_ofnode failed: err=%d\n",
__func__, ret); __func__, ret);
return ret;
/* Check if args.node's parent is a PHY provider */
ret = uclass_get_device_by_ofnode(UCLASS_PHY,
ofnode_get_parent(args.node),
&phydev);
if (ret)
return ret;
/* insert phy idx at first position into args array */
for (i = args.args_count; i > 1 ; i--)
args.args[i] = args.args[i - 1];
args.args_count++;
args.args[0] = ofnode_read_u32_default(args.node, "reg", -1);
} }
phy->dev = phydev; phy->dev = phydev;