[PATCH v3 1/2] ohci-platform: Add support for devicetree instantiation
Sergei Shtylyov
sergei.shtylyov at cogentembedded.com
Thu Jan 9 15:14:30 EST 2014
Hello.
On 01/09/2014 08:57 PM, Hans de Goede wrote:
> Add support for ohci-platform instantiation from devicetree, including
> optionally getting clks and a phy from devicetree, and enabling / disabling
> those on power_on / off.
> This should allow using ohci-platform from devicetree in various cases.
> Specifically after this commit it can be used for the ohci controller found
> on Allwinner sunxi SoCs.
> Signed-off-by: Hans de Goede <hdegoede at redhat.com>
> ---
> .../devicetree/bindings/usb/mmio-ohci.txt | 22 +++
> drivers/usb/host/ohci-platform.c | 150 ++++++++++++++++++---
> 2 files changed, 152 insertions(+), 20 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/usb/mmio-ohci.txt
> diff --git a/Documentation/devicetree/bindings/usb/mmio-ohci.txt b/Documentation/devicetree/bindings/usb/mmio-ohci.txt
> new file mode 100644
> index 0000000..9c776ed
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/usb/mmio-ohci.txt
> @@ -0,0 +1,22 @@
> +Generic MMIO OHCI controller
OHCI controller always uses MMIO, and likewise EHCI. You don't need to
specifically mention it.
> +
> +Required properties:
> +- compatible : "mmio-ohci"
Likewise, it's not a good name. Why not call it "platform-ohci"?
> +- reg : ohci controller register range (address and length)
> +- interrupts : ohci controller interrupt
> +
> +Optional properties:
> +- clocks : a list of phandle + clock specifier pairs
> +- phys : phandle + phy specifier pair
> +- phy-names : "usb"
> +
> +Example:
> +
> + ohci0: ohci at 0x01c14400 {
> + compatible = "mmio-ohci";
> + reg = <0x01c14400 0x100>;
> + interrupts = <64>;
> + clocks = <&usb_clk 6>, <&ahb_gates 2>;
> + phys = <&usbphy 1>;
> + phy-names = "usb";
> + };
WBR, Sergei
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