linux-kernel - Re: [Letux-kernel] [BUG] SPI broken for SPI based panel drivers

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Message-ID: <CAGngYiU2OafLOHGJd-hQd-6dpnCdhv2wjKE8kDR0+R8T9B=Pkw@mail.gmail.com>
Date:   Tue, 1 Dec 2020 11:55:34 -0500
From:   Sven Van Asbroeck <thesven73@...il.com>
To:     Andreas Kemnade <andreas@...nade.info>
Cc:     Discussions about the Letux Kernel <letux-kernel@...nphoenux.org>,
        "H. Nikolaus Schaller" <hns@...delico.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Mark Brown <broonie@...nel.org>,
        kernel list <linux-kernel@...r.kernel.org>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>
Subject: Re: [Letux-kernel] [BUG] SPI broken for SPI based panel drivers

Hi Andreas,

On Tue, Dec 1, 2020 at 11:44 AM Andreas Kemnade <andreas@...nade.info> wrote:
>
> So if that one is really active-low, why did it ever work?!

Because the spi gpio chipselect was broken (inverted), and
766c6b63aa04 ("spi: fix client driver breakages when using GPIO descriptors")
fixes it.