回覆: [PATCH V6 2/3] pinctrl: Add support pin control for UP board CPLD/FPGA

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Hi Linus, 

       Thank you for spending time to review the V6 patch, for your question, please kindly to check our comments with ">>" beginning.

Best Regards, 
Larry


寄件者: Linus Walleij <linus.walleij@xxxxxxxxxx>
寄件日期: 2023年9月15日 下午 05:02
收件者: Larry Lai <larry.lai@xxxxxxxxxxxxxxx>
副本: lee@xxxxxxxxxx <lee@xxxxxxxxxx>; andriy.shevchenko@xxxxxxxxxxxxxxx <andriy.shevchenko@xxxxxxxxxxxxxxx>; pavel@xxxxxx <pavel@xxxxxx>; linux-kernel@xxxxxxxxxxxxxxx <linux-kernel@xxxxxxxxxxxxxxx>; linux-gpio@xxxxxxxxxxxxxxx <linux-gpio@xxxxxxxxxxxxxxx>; linux-leds@xxxxxxxxxxxxxxx <linux-leds@xxxxxxxxxxxxxxx>; GaryWang@xxxxxxxxxxxx <GaryWang@xxxxxxxxxxxx>; Musa Lin <musa.lin@xxxxxxxxxxxxxxx>; Jack Chang <jack.chang@xxxxxxxxxxxxxxx>; Noah Hung <noah.hung@xxxxxxxxxxxxxxx>
主旨: Re: [PATCH V6 2/3] pinctrl: Add support pin control for UP board CPLD/FPGA 
 
On Fri, Sep 15, 2023 at 5:12 AM larry.lai <larry.lai@xxxxxxxxxxxxxxx> wrote:

> The UP Squared board <http://www.upboard.com> implements certain
> features (pin control) through an on-board FPGA.
>
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
> Signed-off-by: Gary Wang <garywang@xxxxxxxxxxxx>
> Signed-off-by: larry.lai <larry.lai@xxxxxxxxxxxxxxx>

This v6 overall looks good to me!
Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>

Can the patch be merged on its own?

> +#include "core.h"
> +#include "intel/pinctrl-intel.h"

Didn't notice this before. But if Andy is OK with it, I'm
OK with it, I guess there is a reason? Perhaps it warrants
a comment explaining why you do this?
>>
Need struct intel_pinctrl gpp information to control dedicated Raspberry Pi compatible GPIOs. 
These products (Up boards) are intel approves foundation kits.

Valid reasons:
- You are using Intel-specific HW features also found in this
   FPGA

Invalid reasons:
- Using nifty macros or helpers, then either make them generic
  or (if they are small) duplicate them.

If it was that thing I asked Andy to keep locally because I didn't
agree with its generic usefulness, maybe I should be told to
reconsider.

Yours,
Linus Walleij




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