[U-Boot] [PATCH v2 3/5] i.MX6: define struct pwm_regs and PWMCR_* defines

[Stefano Babic <sbabic@denx.de>]

Hi Heiko,

On 15/07/2014 11:27, Heiko Schocher wrote:
> Hello Stefano,
> 
> Am 15.07.2014 10:58, schrieb Stefano Babic:
>> Hi Heiko,
>>
>> On 15/07/2014 10:52, Heiko Schocher wrote:
>>
>>>> I see. What do you mind to add a little effort and move the setup of
>>>> the
>>>> PWM from the aristaneos board to a PWM driver ? I see there is not
>>>> (yet)
>>>> such a driver, but why not ?
>>>
>>> Yes, I can do that ... Hmm, where do you think is a good place for this
>>> driver?
>>>
>>
>> IMHO you can create a drivers/pwm directory and add a pwm-imx.c driver.
>> This reflects the same we have in kernel.
> 
> Yes, that was also my first thought, but we have a API for this in
> include/pwm.h
> but no drivers/pwm ... so I searched pwm_init and found:
> 
> pollux:u-boot hs [20140715] $ grep -lr pwm_init .
> ./include/.pwm.h.swp
> ./include/pwm.h
> ./arch/arm/include/asm/arch-tegra20/pwm.h
> ./arch/arm/cpu/armv7/s5p-common/pwm.c
> ./arch/arm/cpu/armv7/s5p-common/timer.c
> ./arch/arm/cpu/armv7/tegra20/pwm.c
> ./board/nvidia/common/board.c
> pollux:u-boot hs [20140715] $
> 
> I think, it would better to add a "arch/arm/cpu/armv7/mx6/pwm.c"
> 
> Would this be ok?

Added Tom for asking his opinion. IMHO we had in the past a lot of
drivers hidden in arch/ directories, and we have already moved them to a
more generic drivers/ organization.

include/pwm.h is ok. It sets the prototypes as in kernel. Personally, I
would move the driver for tegra in drivers/pwm/ else to hide a new
driver in arch/arm/cpu/armv7/mx6/pwm.c

Best regards,
Stefano

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