From: dianders@chromium.org (Doug Anderson)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v4 2/2] pwm: rockchip: Added to support for RK3288 SoC
Date: Wed, 6 Aug 2014 19:16:51 -0700 [thread overview]
Message-ID: <CAD=FV=Xw8tz2keCUtO+qYUmnuv=+DPGZjY9-j_2XmAcP3Luzjg@mail.gmail.com> (raw)
In-Reply-To: <53E2D605.2000704@rock-chips.com>
Caesar,
On Wed, Aug 6, 2014 at 6:27 PM, caesar <caesar.wang@rock-chips.com> wrote:
> Doug,
>
> ? 2014?08?07? 06:46, Doug Anderson ??:
>
>> Caesar,
>>
>> On Thu, Jul 24, 2014 at 3:21 AM, Caesar Wang <caesar.wang@rock-chips.com>
>> wrote:
>>>
>>> +static const struct rockchip_pwm_data pwm_data_v1 = {
>>> + .regs.duty = PWM_HRC,
>>> + .regs.period = PWM_LRC,
>>> + .regs.cntr = PWM_CNTR,
>>> + .regs.ctrl = PWM_CTRL,
>>> + .prescaler = PRESCALER,
>>> + .set_enable = rockchip_pwm_set_enable_v1,
>>> +};
>>> +
>>> +static const struct rockchip_pwm_data pwm_data_v2 = {
>>> + .regs.duty = PWM_LRC,
>>> + .regs.period = PWM_HRC,
>>> + .regs.cntr = PWM_CNTR,
>>> + .regs.ctrl = PWM_CTRL,
>>> + .prescaler = PRESCALER-1,
>>> + .set_enable = rockchip_pwm_set_enable_v2,
>>> +};
>>> +
>>> +static const struct rockchip_pwm_data pwm_data_vop = {
>>> + .regs.duty = PWM_LRC,
>>> + .regs.period = PWM_HRC,
>>> + .regs.cntr = PWM_CTRL,
>>> + .regs.ctrl = PWM_CNTR,
>>
>> Did you really mean to flip CTRL and CNTR here? If so, that's super
>> confusing and deserves a comment. AKA, I think the above should not
>> be:
>>
>> + .regs.cntr = PWM_CTRL,
>> + .regs.ctrl = PWM_CNTR,
>>
>> ...but should be
>>
>> + .regs.cntr = PWM_CNTR,
>> + .regs.ctrl = PWM_CTRL,
>>
>> If you didn't mean to flip CTRL and CNTR here, then just get rid of
>> pwm_data_vop and refer to pwm_data_v2. In fact, I'd suggest that you
>> totally remove the "rockchip,vop-pwm" since there's nothing different
>> between "rockchip,rk3288-pwm" and "rockchip,vop-pwm".
>
>
> Sorry,I think it's no problem. the "rockchip,rk3288-pwm" and
> "rockchip,vop-pwm" are seperate PWM controllers.
> They are just different registers address between CNTR and CTRL .
OK, I looked up in the TRM. Right, the CNTR and CTRL are flipped on
the vop. So I think that the only change you need is to add:
#define PWM_VOP_CTRL 0x00
#define PWM_VOP_CNTR 0x0c
...then use these new #defines for the vop structure.
As you have the code written right now it's very confusing. The new
#defines will fix this.
>> Have you validated Thierry's suggestion to allow you to access your
>> memory range?
>
> Yes,we have solve it in lcdc driver.
> The Mark Yao have the submission in [0].
>
> [0]: https://lkml.org/lkml/2014/8/4/20
Excellent! Then we should be able to land after you fix the above.
-Doug
next prev parent reply other threads:[~2014-08-07 2:16 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-24 10:21 [PATCH v4 0/2] This series adds support for RK3288 SoC integrated PWM Caesar Wang
2014-07-24 10:21 ` [PATCH v4 1/2] pwm: rockchip: document RK3288 SoC compatible Caesar Wang
2014-07-24 10:21 ` [PATCH v4 2/2] pwm: rockchip: Added to support for RK3288 SoC Caesar Wang
2014-08-06 22:46 ` Doug Anderson
2014-08-07 1:27 ` caesar
2014-08-07 2:16 ` Doug Anderson [this message]
2014-08-07 3:23 ` caesar
2014-08-07 3:26 ` Doug Anderson
2014-08-07 3:37 ` caesar
2014-08-07 3:46 ` Doug Anderson
2014-08-07 4:05 ` caesar
2014-08-07 6:12 ` Thierry Reding
2014-08-07 6:18 ` Thierry Reding
2014-08-07 13:04 ` caesar
2014-08-07 13:14 ` Thierry Reding
2014-08-07 13:55 ` caesar
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