[PATCH v7]pwm: add BCM2835 PWM driver

Bart Tanghe bart.tanghe at thomasmore.be
Wed Oct 8 07:02:49 PDT 2014


On 2014-10-08 14:19, Thierry Reding wrote:
> On Wed, Oct 08, 2014 at 12:14:32PM +0200, Bart Tanghe wrote:
>> Add pwm driver for Broadcom BCM2835 processor (Raspberry Pi)
>>
>> Signed-off-by: Bart Tanghe <bart.tanghe at thomasmore.be>
>> ---
>> Changed in v7:
>>  - clean up the shameful clk_enable error handling introduced in v6
>>  - clean up the code nits
>>
>> diff --git a/Documentation/devicetree/bindings/pwm/pwm-bcm2835.txt b/Documentation/devicetree/bindings/pwm/pwm-bcm2835.txt
>> new file mode 100644
>> index 0000000..d5162db
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/pwm/pwm-bcm2835.txt
>> @@ -0,0 +1,27 @@
>> +BCM2835 PWM controller (Raspberry Pi controller)
>> +
>> +Required properties:
>> +- compatible: should be "brcm,bcm2835-pwm"
>> +- reg: physical base address and length of the controller's registers
>> +- clock: this clock defines the base clock frequency of the pwm
>> +hardware system, the period and the duty_cycle of the pwm signal is a
>> +multiple of the base period
> 
> This needs to document the #pwm-cells property. I can fix that up when
> applying, though.
> 
> Let's give Stephen and others a chance to give this another look.
> 
> Thierry
> 
Perfect, thanks.

Bart



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