Linux SPI subsystem development
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From: Jay Fang <f.fangjian@huawei.com>
To: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: "broonie@kernel.org" <broonie@kernel.org>,
	"linus.walleij@linaro.org" <linus.walleij@linaro.org>,
	"linux-spi@vger.kernel.org" <linux-spi@vger.kernel.org>,
	"linux-gpio@vger.kernel.org" <linux-gpio@vger.kernel.org>,
	"linuxarm@huawei.com" <linuxarm@huawei.com>,
	"huangdaode@huawei.com" <huangdaode@huawei.com>,
	"tangzihao1@hisilicon.com" <tangzihao1@hisilicon.com>
Subject: Re: [PATCH 0/2] spi: Correct CS GPIOs polarity when using GPIO descriptors
Date: Thu, 6 May 2021 17:11:31 +0800	[thread overview]
Message-ID: <e919da77-a664-d78b-2c47-cc9ba8745a72@huawei.com> (raw)
In-Reply-To: <CAHp75Vei0QGaKiq5Nai7Gsa=jcMSipaXV_6qZbBy=f0OrN=DHQ@mail.gmail.com>

On 2021/5/6 16:14, Andy Shevchenko wrote:
> 
> 
> On Thursday, May 6, 2021, Andy Shevchenko <andy.shevchenko@gmail.com <mailto:andy.shevchenko@gmail.com>> wrote:
> 
> 
> 
>     On Thursday, May 6, 2021, Jay Fang <f.fangjian@huawei.com <mailto:f.fangjian@huawei.com>> wrote:
> 
>         This series introduces a generic implementation to solve the conflict
>         between the 'cs-gpios' flags and the optional SPI slaves flags. So we
>         don't need to add two similar quirks separately for DT and ACPI.
> 
> 
>     NAK. There is a patch against documentation that clarifies polarity of GPIO for ACPI. I have a fix for that to use generic implementation of  CS GPIOs .

Thanks. Has the Fix patch been merged ? Commit Id ?

> 
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git/commit/?h=bleeding-edge&id=ec3576eac11d66a388b6cba6a7cfb3b45039a712 <https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git/commit/?h=bleeding-edge&id=ec3576eac11d66a388b6cba6a7cfb3b45039a712>
> 
> 
> If your ACPI table uses GPIO CS with polarity low (assumes _DSD() is involved), this is a bug. Fix firmware or do a quirk specific for your platform.
> 
>  
> 
>      
> 
>         Jay Fang (2):
>           spi: Correct CS GPIOs polarity when using GPIO descriptors
>           Revert "gpio: of: Handle SPI chipselect legacy bindings"
> 
>          drivers/gpio/gpiolib-of.c | 51 ++---------------------------------------------
>          drivers/spi/spi.c         | 22 ++++++++++++++++++--
>          2 files changed, 22 insertions(+), 51 deletions(-)
> 
>         -- 
>         2.7.4
> 
> 
> 
>     -- 
>     With Best Regards,
>     Andy Shevchenko
> 
> 
> 
> 
> -- 
> With Best Regards,
> Andy Shevchenko
> 
> 



  parent reply	other threads:[~2021-05-06  9:11 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-06  3:00 [PATCH 0/2] spi: Correct CS GPIOs polarity when using GPIO descriptors Jay Fang
2021-05-06  3:00 ` [PATCH 1/2] " Jay Fang
2021-05-06  3:00 ` [PATCH 2/2] Revert "gpio: of: Handle SPI chipselect legacy bindings" Jay Fang
     [not found] ` <CAHp75Vfr8t9UVqVn6hLSN6Mi3=iNAn612eE-qKq9HfrwNhpg3Q@mail.gmail.com>
     [not found]   ` <CAHp75Vei0QGaKiq5Nai7Gsa=jcMSipaXV_6qZbBy=f0OrN=DHQ@mail.gmail.com>
2021-05-06  9:11     ` Jay Fang [this message]
2021-05-06  9:44       ` [PATCH 0/2] spi: Correct CS GPIOs polarity when using GPIO descriptors Andy Shevchenko
2021-05-06  9:51         ` Andy Shevchenko
2021-05-06 11:06         ` Linus Walleij
2021-05-06 11:24           ` Mark Brown
     [not found]           ` <CAHp75Veoqnd3Hgzq8DAz-_=QxMt-+r608dkzPp67YA5eitLJNw@mail.gmail.com>
2021-05-06 11:34             ` Mark Brown
2021-05-06 12:17               ` Andy Shevchenko

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