On 04/02/2012 02:37 AM, Thierry Reding wrote:
> * Stephen Warren wrote:
>> On 03/28/2012 08:33 AM, Thierry Reding wrote:
>>> Add auxdata to instantiate the PWFM controller from a device tree,
>>> include the corresponding nodes in the dtsi files for Tegra 20 and
>>> Tegra 30 and add binding documentation.
>>>
>>> Signed-off-by: Thierry Reding <thierry.reding@xxxxxxxxxxxxxxxxx>
>>> Acked-by: Stephen Warren <swarren@xxxxxxxxxxxxx>
>>
>>> diff --git a/drivers/pwm/pwm-tegra.c b/drivers/pwm/pwm-tegra.c
>> ...
>>> +#ifdef CONFIG_OF
>>> +static struct of_device_id tegra_pwm_of_match[] = {
>>> + { .compatible = "nvidia,tegra20-pwm" },
>>> + { .compatible = "nvidia,tegra30-pwm" },
>>
>> Could you swap those two lines, so that tegra30-pwm matches first. It
>> makes no difference at present, but might in the future if the driver
>> actually has to differentiate the two SoCs.
>
> I thought the matching order was determined by the compatible property in the
> device tree, not the OF match table of the driver.
At least logically, yes. However, of_match_device() appears to iterate
over each match table entry, checking whether it matches any string in
the compatible flag. Perhaps this could be considered a bug?
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