[PATCH v11 5/6] flexcan: Prefer device tree clock frequency if available.

[Kumar Gala]

On Aug 11, 2011, at 11:18 AM, Marc Kleine-Budde wrote:

> On 08/11/2011 06:07 PM, Robin Holt wrote:
>> If our CAN device's device tree node has a clock-frequency property,
>> then use that value for the can devices clock frequency.  If not, fall
>> back to asking the platform/mach code for the clock frequency associated
>> with the flexcan device.
> 
> nitpicking follows inline:
> 
>> Signed-off-by: Robin Holt <holt at sgi.com>
>> To: Kumar Gala <galak at kernel.crashing.org>
>> To: Wolfgang Grandegger <wg at grandegger.com>,
>> To: Marc Kleine-Budde <mkl at pengutronix.de>,
>> To: U Bhaskar-B22300 <B22300 at freescale.com>
>> To: Scott Wood <scottwood at freescale.com>
>> To: Grant Likely <grant.likely at secretlab.ca>
>> Cc: socketcan-core at lists.berlios.de,
>> Cc: netdev at vger.kernel.org,
>> Cc: PPC list <linuxppc-dev at lists.ozlabs.org>
>> Cc: devicetree-discuss at lists.ozlabs.org
>> ---
>> .../devicetree/bindings/net/can/fsl-flexcan.txt    |    2 +
>> drivers/net/can/flexcan.c                          |   33 +++++++++++++++-----
>> 2 files changed, 27 insertions(+), 8 deletions(-)
>> 
>> diff --git a/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt b/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt
>> index c78dcbb..a4382c7 100644
>> --- a/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt
>> +++ b/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt
>> @@ -11,6 +11,7 @@ Required properties:
>> 
>> - reg : Offset and length of the register set for this device
>> - interrupts : Interrupt tuple for this device
>> +- clock-frequency : The oscillator frequency driving the flexcan device
>> 
>> Example:
>> 
>> @@ -19,4 +20,5 @@ Example:
>>           reg = <0x1c000 0x1000>;
>>           interrupts = <48 0x2>;
>>           interrupt-parent = <&mpic>;
>> +          clock-frequency = <0x0bebc1fc>;
> 
> Does the device tree support dec coded integers? IMHO a frequency is
> best expressed in decimal.

Yes it does, and agree that in the example a dec # might be better

- k