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Subject[PATCH 3/5] ARM: dts: imx50: Add PHY node for usbotg and adjust clocks
Date
Even though the ChipIdea USB controller binding[1] doesn't specify the
properties that reference a PHY as required, the Linux driver
requires[2] such a reference.

The clock situation is like on i.MX53: The USB controller is clocked
from IMX5_CLK_USBOH3_GATE and the PHY from IMX5_CLK_USB_PHY1_GATE.

[1]: Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt
[2]: Search for EINVAL in drivers/usb/chipidea/ci_hdrc_imx.c

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
---
arch/arm/boot/dts/imx50.dtsi | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/imx50.dtsi b/arch/arm/boot/dts/imx50.dtsi
index ee1e3e8bf4ec..e5632ce24ba0 100644
--- a/arch/arm/boot/dts/imx50.dtsi
+++ b/arch/arm/boot/dts/imx50.dtsi
@@ -76,6 +76,14 @@
};
};

+ usbphy0: usbphy-0 {
+ compatible = "usb-nop-xceiv";
+ clocks = <&clks IMX5_CLK_USB_PHY1_GATE>;
+ clock-names = "main_clk";
+ #phy-cells = <0>;
+ status = "okay";
+ };
+
soc {
#address-cells = <1>;
#size-cells = <1>;
@@ -187,7 +195,8 @@
compatible = "fsl,imx50-usb", "fsl,imx27-usb";
reg = <0x53f80000 0x0200>;
interrupts = <18>;
- clocks = <&clks IMX5_CLK_USB_PHY1_GATE>;
+ clocks = <&clks IMX5_CLK_USBOH3_GATE>;
+ fsl,usbphy = <&usbphy0>;
status = "disabled";
};

--
2.20.1
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