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[2/4] dt: exynos5250: Enable support for generic USB 3.0 phy

Message ID 1383205544-32244-3-git-send-email-gautam.vivek@samsung.com (mailing list archive)
State New, archived
Headers show

Commit Message

Vivek Gautam Oct. 31, 2013, 7:45 a.m. UTC
Update device tree bindings for DWC3 controller and
USB 3.0 phy present on Exynos 5250 SoC, to start using
the phy driver based on generic phy framework.

Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
---
 arch/arm/boot/dts/exynos5250.dtsi |   17 ++++++-----------
 1 files changed, 6 insertions(+), 11 deletions(-)

Comments

Tomasz Figa Nov. 10, 2013, 2:54 p.m. UTC | #1
Hi Vivek,

On Thursday 31 of October 2013 13:15:42 Vivek Gautam wrote:
> Update device tree bindings for DWC3 controller and
> USB 3.0 phy present on Exynos 5250 SoC, to start using
> the phy driver based on generic phy framework.
> 
> Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
> ---
>  arch/arm/boot/dts/exynos5250.dtsi |   17 ++++++-----------
>  1 files changed, 6 insertions(+), 11 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi
> index bbac42a..31a6595 100644
> --- a/arch/arm/boot/dts/exynos5250.dtsi
> +++ b/arch/arm/boot/dts/exynos5250.dtsi
> @@ -472,22 +472,17 @@
>  			compatible = "synopsys,dwc3";
>  			reg = <0x12000000 0x10000>;
>  			interrupts = <0 72 0>;
> -			usb-phy = <&usb2_phy &usb3_phy>;
> +			phys = <&usb3_phy>;
> +			phy-names = "usb3-phy";

Does the driver already support generic PHY framework?

Also it looks like originally it required two PHYs, while your patch
changes it to just one.

>  		};
>  	};
>  
>  	usb3_phy: usbphy@12100000 {
>  		compatible = "samsung,exynos5250-usb3phy";

Hmm, this is not fully right. The new bindings should have new compatible
value. This is also a comment to patch 1/1. This is because a device tree
binding associated with specific compatible value is an ABI and should not
be changed in a way that breaks backwards compatibility.

Best regards,
Tomasz
diff mbox

Patch

diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi
index bbac42a..31a6595 100644
--- a/arch/arm/boot/dts/exynos5250.dtsi
+++ b/arch/arm/boot/dts/exynos5250.dtsi
@@ -472,22 +472,17 @@ 
 			compatible = "synopsys,dwc3";
 			reg = <0x12000000 0x10000>;
 			interrupts = <0 72 0>;
-			usb-phy = <&usb2_phy &usb3_phy>;
+			phys = <&usb3_phy>;
+			phy-names = "usb3-phy";
 		};
 	};
 
 	usb3_phy: usbphy@12100000 {
 		compatible = "samsung,exynos5250-usb3phy";
-		reg = <0x12100000 0x100>;
-		clocks = <&clock 1>, <&clock 286>;
-		clock-names = "ext_xtal", "usbdrd30";
-		#address-cells = <1>;
-		#size-cells = <1>;
-		ranges;
-
-		usbphy-sys {
-			reg = <0x10040704 0x8>;
-		};
+		reg = <0x12100000 0x100 0x10040704 0x4>;
+		clocks = <&clock 286>, <&clock 1>;
+		clock-names = "phy", "usb3drd";
+		#phy-cells = <0>;
 	};
 
 	usb@12110000 {