linux-kernel - RE: [PATCH v5 1/4] ARM: Exynos5250: Enabling ehci-s5p driver

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Date:	Fri, 08 Feb 2013 14:35:06 -0800
From:	Kukjin Kim <kgene.kim@...sung.com>
To:	'Vivek Gautam' <gautam.vivek@...sung.com>,
	linux-samsung-soc@...r.kernel.org
Cc:	devicetree-discuss@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
	linux-usb@...r.kernel.org, grant.likely@...retlab.ca,
	dianders@...omium.org, jg1.han@...sung.com,
	Thomas Abraham <thomas.ab@...sung.com>
Subject: RE: [PATCH v5 1/4] ARM: Exynos5250: Enabling ehci-s5p driver

Vivek Gautam wrote:
> 
> Adding EHCI device tree node for Exynos5250 along with
> the device base adress and gpio line for vbus.
> 
> Signed-off-by: Vivek Gautam <gautam.vivek@...sung.com>
> Acked-by: Jingoo Han <jg1.han@...sung.com>
> Acked-by: Grant Likely <grant.likely@...retlab.ca>
> ---
> 
> Changes from v4:
>  - Added gpio line for VBUS of USB2.0 on snow board.
> 
>  .../devicetree/bindings/usb/exynos-usb.txt         |   25
> ++++++++++++++++++++
>  arch/arm/boot/dts/exynos5250-smdk5250.dts          |    4 +++
>  arch/arm/boot/dts/exynos5250-snow.dts              |    4 +++
>  arch/arm/boot/dts/exynos5250.dtsi                  |    6 ++++
>  4 files changed, 39 insertions(+), 0 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/usb/exynos-
> usb.txt
> 
> diff --git a/Documentation/devicetree/bindings/usb/exynos-usb.txt
> b/Documentation/devicetree/bindings/usb/exynos-usb.txt
> new file mode 100644
> index 0000000..e8bbb47
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/usb/exynos-usb.txt
> @@ -0,0 +1,25 @@
> +Samsung Exynos SoC USB controller
> +
> +The USB devices interface with USB controllers on Exynos SOCs.
> +The device node has following properties.
> +
> +EHCI
> +Required properties:
> + - compatible: should be "samsung,exynos4210-ehci" for USB 2.0
> +   EHCI controller in host mode.
> + - reg: physical base address of the controller and length of memory
> mapped
> +   region.
> + - interrupts: interrupt number to the cpu.
> +
> +Optional properties:
> + - samsung,vbus-gpio:  if present, specifies the GPIO that
> +   needs to be pulled up for the bus to be powered.
> +
> +Example:
> +
> +	usb@...10000 {
> +		compatible = "samsung,exynos4210-ehci";
> +		reg = <0x12110000 0x100>;
> +		interrupts = <0 71 0>;
> +		samsung,vbus-gpio = <&gpx2 6 1 3 3>;
> +	};
> diff --git a/arch/arm/boot/dts/exynos5250-smdk5250.dts
> b/arch/arm/boot/dts/exynos5250-smdk5250.dts
> index 942d576..7363e14 100644
> --- a/arch/arm/boot/dts/exynos5250-smdk5250.dts
> +++ b/arch/arm/boot/dts/exynos5250-smdk5250.dts
> @@ -204,4 +204,8 @@
>  		samsung,mfc-r = <0x43000000 0x800000>;
>  		samsung,mfc-l = <0x51000000 0x800000>;
>  	};
> +
> +	usb@...10000 {
> +		samsung,vbus-gpio = <&gpx2 6 1 3 3>;
> +	};
>  };
> diff --git a/arch/arm/boot/dts/exynos5250-snow.dts
> b/arch/arm/boot/dts/exynos5250-snow.dts
> index 17dd951..47b6b84 100644
> --- a/arch/arm/boot/dts/exynos5250-snow.dts
> +++ b/arch/arm/boot/dts/exynos5250-snow.dts
> @@ -40,4 +40,8 @@
>  				<&gpc4 5 2 3 0>, <&gpc4 6 2 3 0>;
>  		};
>  	};
> +
> +	usb@...10000 {
> +		samsung,vbus-gpio = <&gpx1 1 1 3 3>;
> +	};
>  };
> diff --git a/arch/arm/boot/dts/exynos5250.dtsi
> b/arch/arm/boot/dts/exynos5250.dtsi
> index 30485de..2cbe53e 100644
> --- a/arch/arm/boot/dts/exynos5250.dtsi
> +++ b/arch/arm/boot/dts/exynos5250.dtsi
> @@ -275,6 +275,12 @@
>  		#size-cells = <0>;
>  	};
> 
> +	usb@...10000 {
> +		compatible = "samsung,exynos4210-ehci";
> +		reg = <0x12110000 0x100>;
> +		interrupts = <0 71 0>;
> +	};
> +
>  	amba {
>  		#address-cells = <1>;
>  		#size-cells = <1>;
> --
> 1.7.6.5

Looks good to me and applied this and "[PATCH v3 2/4] ARM: Exynos5250:
Enabling ohci-exynos driver" in Samsung tree.

Note, I think, you need to implement to use pinctrl for this instead of old
gpio bindings next time, probably after release v3.9-rc1.

Ah, one more, please use subject lines appropriate like others, "ARM: dts:
....".

Thanks.

- Kukjin

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