linux-kernel - Re: [PATCH v3 1/2] ARM: Exynos5250: Enabling ehci-s5p driver

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Date:	Sat, 15 Dec 2012 07:23:12 +0000
From:	Grant Likely <grant.likely@...retlab.ca>
To:	Vivek Gautam <gautam.vivek@...sung.com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org,
	devicetree-discuss@...ts.ozlabs.org
Cc:	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
	kgene.kim@...sung.com, jg1.han@...sung.com,
	thomas.abraham@...aro.org
Subject: Re: [PATCH v3 1/2] ARM: Exynos5250: Enabling ehci-s5p driver

On Thu, 13 Dec 2012 22:06:01 +0530, Vivek Gautam <gautam.vivek@...sung.com> 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>
> ---
>  .../devicetree/bindings/usb/exynos-usb.txt         |   25 ++++++++++++++++++++
>  arch/arm/boot/dts/exynos5250-smdk5250.dts          |    4 +++
>  arch/arm/boot/dts/exynos5250.dtsi                  |    6 ++++
>  arch/arm/mach-exynos/include/mach/map.h            |    1 +
>  arch/arm/mach-exynos/mach-exynos5-dt.c             |    2 +
>  5 files changed, 38 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 711b55f..f990086 100644
> --- a/arch/arm/boot/dts/exynos5250-smdk5250.dts
> +++ b/arch/arm/boot/dts/exynos5250-smdk5250.dts
> @@ -218,4 +218,8 @@
>  	i2s_2: i2s@...70000 {
>  		status = "disabled";
>  	};
> +
> +	usb@...10000 {
> +		samsung,vbus-gpio = <&gpx2 6 1 3 3>;
> +	};
>  };
> diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi
> index 581e57a..584bb9a 100644
> --- a/arch/arm/boot/dts/exynos5250.dtsi
> +++ b/arch/arm/boot/dts/exynos5250.dtsi
> @@ -299,6 +299,12 @@
>  		rx-dma-channel = <&pdma0 11>; /* preliminary */
>  	};
>  
> +	usb@...10000 {
> +		compatible = "samsung,exynos4210-ehci";
> +		reg = <0x12110000 0x100>;
> +		interrupts = <0 71 0>;
> +	};
> +
>  	amba {
>  		#address-cells = <1>;
>  		#size-cells = <1>;
> diff --git a/arch/arm/mach-exynos/include/mach/map.h b/arch/arm/mach-exynos/include/mach/map.h
> index cbb2852..b2c662f 100644
> --- a/arch/arm/mach-exynos/include/mach/map.h
> +++ b/arch/arm/mach-exynos/include/mach/map.h
> @@ -201,6 +201,7 @@
>  #define EXYNOS4_PA_EHCI			0x12580000
>  #define EXYNOS4_PA_OHCI			0x12590000
>  #define EXYNOS4_PA_HSPHY		0x125B0000
> +#define EXYNOS5_PA_EHCI			0x12110000
>  #define EXYNOS4_PA_MFC			0x13400000
>  
>  #define EXYNOS4_PA_UART			0x13800000
> diff --git a/arch/arm/mach-exynos/mach-exynos5-dt.c b/arch/arm/mach-exynos/mach-exynos5-dt.c
> index 462e5ac..b3b9af1 100644
> --- a/arch/arm/mach-exynos/mach-exynos5-dt.c
> +++ b/arch/arm/mach-exynos/mach-exynos5-dt.c
> @@ -110,6 +110,8 @@ static const struct of_dev_auxdata exynos5250_auxdata_lookup[] __initconst = {
>  				"samsung-i2s.1", NULL),
>  	OF_DEV_AUXDATA("samsung,samsung-i2s", 0x12D70000,
>  				"samsung-i2s.2", NULL),
> +	OF_DEV_AUXDATA("samsung,exynos4210-ehci", EXYNOS5_PA_EHCI,
> +				"s5p-ehci", NULL),

I'm assuming the above change is temporary. What is left to be done to
drop the auxdata in theses two patches?

Otherwise the patch looks fine.

Acked-by: Grant Likely <grant.likely@...retlab.ca>
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