On 04/03/2014 04:59 PM, Felipe Balbi wrote:
> On Thu, Apr 03, 2014 at 01:05:18PM +0530, Subbaraya Sundeep Bhatta wrote:
>> Add devicetree bindings for Xilinx axi udc driver.
>>
>> Signed-off-by: Subbaraya Sundeep Bhatta <sbhatta@xxxxxxxxxx>
>> ---
>> Changes for v2:
>> - replaced xlnx,include-dma with xlnx,has-builtin-dma
>>
>> .../devicetree/bindings/usb/udc-xilinx.txt | 20 ++++++++++++++++++++
>> 1 files changed, 20 insertions(+), 0 deletions(-)
>> create mode 100644 Documentation/devicetree/bindings/usb/udc-xilinx.txt
>>
>> diff --git a/Documentation/devicetree/bindings/usb/udc-xilinx.txt b/Documentation/devicetree/bindings/usb/udc-xilinx.txt
>> new file mode 100644
>> index 0000000..7c24fac
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/usb/udc-xilinx.txt
>> @@ -0,0 +1,20 @@
>> +Xilinx AXI USB2 device controller
>> +
>> +Required properties:
>> +- compatible : Should be "xlnx,axi-usb2-device-4.00.a"
>> +- reg : Physical base address and size of the Axi USB2
>> + device registers map.
>> +- interrupts : Property with a value describing the interrupt
>> + number.
>> +- interrupt-parent : Must be core interrupt controller
>> +- xlnx,has-builtin-dma : if DMA is included
>
> isn't there a configuration register to tell you this ?
I have checked this with Sundeep and there is nothing like that in the HW.
>
>> +
>> +Example:
>> + axi-usb2-device@42e00000 {
>> + compatible = "xlnx,axi-usb2-device-4.00.a";
>> + interrupt-parent = <0x1>;
>
> why isn't interrupt-parent a phandle ?
Just for the record: Using number here should be also fine because DTC
is converting it to numbers with linux,phandle and phandle.
[linux-next]$ dtc -O dts -I dtb /tftpboot/devicetree.dtb | less
...
ps7-scugic@f8f01000 {
#address-cells = <0x2>;
#interrupt-cells = <0x3>;
#size-cells = <0x1>;
compatible = "arm,cortex-a9-gic", "arm,gic";
interrupt-controller;
num_cpus = <0x2>;
num_interrupts = <0x60>;
reg = <0xf8f01000 0x1000 0xf8f00100 0x100>;
linux,phandle = <0x3>;
phandle = <0x3>;
};
ps7-scutimer@f8f00600 {
clocks = <0x2 0x4>;
compatible = "arm,cortex-a9-twd-timer";
interrupt-parent = <0x3>;
interrupts = <0x1 0xd 0x301>;
reg = <0xf8f00600 0x20>;
};
...
but anyway Sundeep with change it to any sensible value <&intc>;
Thanks for pointing to it,
Michal
--
Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel - Microblaze cpu - http://www.monstr.eu/fdt/
Maintainer of Linux kernel - Xilinx Zynq ARM architecture
Microblaze U-BOOT custodian and responsible for u-boot arm zynq platform
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