linux-kernel - Re: [PATCH 1/2] gpio: gpio-74x164: add support for CDx4HC4094

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Message-ID: <CAHp75VddBhc9peHXfNfTyTNni246kC8CyLqCrMFadn67LGDarQ@mail.gmail.com>
Date:   Mon, 25 Jul 2022 11:32:16 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Marcus Folkesson <marcus.folkesson@...il.com>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Maxime Ripard <mripard@...nel.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] gpio: gpio-74x164: add support for CDx4HC4094

On Thu, Jul 21, 2022 at 11:32 AM Marcus Folkesson
<marcus.folkesson@...il.com> wrote:
>
> 74hc4094 and 75hc4094 works similar to 74x164 but has an additional
> storage latch associated with each stage for strobing data from the
> serial input to parallell buffer tri-state output.

parallel

> Add support for an optional strobe pin.

Sorry for my absence of understanding, but why?
SPI has MOSI, CLK, CS, where the last one is exactly for that. No?


-- 
With Best Regards,
Andy Shevchenko