On 03/08/2013 11:46 AM, Marc Kleine-Budde wrote:
> On 02/04/2013 04:58 PM, Roger Quadros wrote:
>> The PHY clock, clock rate, VCC regulator and RESET regulator
>> can now be provided via device tree.
>>
>> Signed-off-by: Roger Quadros <rogerq@xxxxxx>
>> ---
>> .../devicetree/bindings/usb/usb-nop-xceiv.txt | 34 ++++++++++++++++++++
>> drivers/usb/otg/nop-usb-xceiv.c | 31 ++++++++++++++++++
>> 2 files changed, 65 insertions(+), 0 deletions(-)
>> create mode 100644 Documentation/devicetree/bindings/usb/usb-nop-xceiv.txt
>>
>> diff --git a/Documentation/devicetree/bindings/usb/usb-nop-xceiv.txt b/Documentation/devicetree/bindings/usb/usb-nop-xceiv.txt
>> new file mode 100644
>> index 0000000..d7e2726
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/usb/usb-nop-xceiv.txt
>> @@ -0,0 +1,34 @@
>> +USB NOP PHY
>> +
>> +Required properties:
>> +- compatible: should be usb-nop-xceiv
>> +
>> +Optional properties:
>> +- clocks: phandle to the PHY clock. Use as per Documentation/devicetree
>> + /bindings/clock/clock-bindings.txt
>> + This property is required if clock-frequency is specified.
>> +
>> +- clock-names: Should be "main_clk"
>> +
>> +- clock-frequency: the clock frequency (in Hz) that the PHY clock must
>> + be configured to.
>> +
>> +- vcc-supply: phandle to the regulator that provides RESET to the PHY.
>> +
>> +- reset-supply: phandle to the regulator that provides power to the PHY.
>> +
>> +Example:
>> +
>> + hsusb1_phy {
>> + compatible = "usb-nop-xceiv";
>> + clock-frequency = <19200000>;
>
> Why do you hardcode the clock frequency here? You should use
> clk_get_rate() to get the frequency from the clock tree.
What about declaring a "fixed-clock" node in the device tree? Then it
should be possible to keep the driver free of any omap specific code.
Marc
--
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