Hi Vivek,
On Tuesday 15 of January 2013 19:08:30 Vivek Gautam wrote:
> Adding OHCI device tree node for Exynos5250 along with
> the device base address.
>
> Signed-off-by: Vivek Gautam <gautam.vivek@xxxxxxxxxxx>
> Acked-by: Jingoo Han <jg1.han@xxxxxxxxxxx>
> Acked-by: Grant Likely <grant.likely@xxxxxxxxxxxx>
> ---
> .../devicetree/bindings/usb/exynos-usb.txt | 15
> +++++++++++++++ arch/arm/boot/dts/exynos5250.dtsi |
> 6 ++++++ 2 files changed, 21 insertions(+), 0 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/usb/exynos-usb.txt
> b/Documentation/devicetree/bindings/usb/exynos-usb.txt index
> e8bbb47..f66fcdd 100644
> --- a/Documentation/devicetree/bindings/usb/exynos-usb.txt
> +++ b/Documentation/devicetree/bindings/usb/exynos-usb.txt
> @@ -23,3 +23,18 @@ Example:
> interrupts = <0 71 0>;
> samsung,vbus-gpio = <&gpx2 6 1 3 3>;
> };
> +
> +OHCI
> +Required properties:
> + - compatible: should be "samsung,exynos4210-ohci" for USB 2.0
> + OHCI companion controller in host mode.
> + - reg: physical base address of the controller and length of memory
> mapped + region.
> + - interrupts: interrupt number to the cpu.
> +
> +Example:
> + usb@12120000 {
> + compatible = "samsung,exynos4210-ohci";
> + reg = <0x12120000 0x100>;
> + interrupts = <0 71 0>;
> + };
> diff --git a/arch/arm/boot/dts/exynos5250.dtsi
> b/arch/arm/boot/dts/exynos5250.dtsi index 2cbe53e..ebb0907 100644
> --- a/arch/arm/boot/dts/exynos5250.dtsi
> +++ b/arch/arm/boot/dts/exynos5250.dtsi
> @@ -281,6 +281,12 @@
> interrupts = <0 71 0>;
> };
>
> + usb@12120000 {
> + compatible = "samsung,exynos4210-ohci";
> + reg = <0x12120000 0x100>;
> + interrupts = <0 71 0>;
For Samsung platforms we decided per board enabling of nodes and so this
node should also contain:
status = "disabled";
while in dts file of board using ohci there would be an overriding entry:
usb@12120000 {
status = "okay";
};
I know that Exynos5250 has not been yet converted into this convention,
but using it when adding new devices will simplify the process.
Best regards,
Tomasz
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