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Date:   Thu, 03 Dec 2020 16:10:39 -0800
From:   Stephen Boyd <>
To:     Doug Anderson <>
Cc:     Alexandru M Stan <>,
        Mark Brown <>,
        linux-kernel <>,
        linux-arm-msm <>,
        linux-spi <>,
        Akash Asthana <>,
        Bjorn Andersson <>,
        Benson Leung <>,
        Enric Balletbo i Serra <>
Subject: Re: [PATCH] spi: spi-geni-qcom: Use the new method of gpio CS control

Quoting Doug Anderson (2020-12-03 12:06:10)
> On Wed, Dec 2, 2020 at 4:47 PM Stephen Boyd <> wrote:
> >
> > And that is wrong. With even more investigation and Doug's eagle eyes it
> > seems that the cros-ec driver is overriding the spi::mode to clear out
> > the SPI_CS_HIGH bit that the spi core sets in there when using the gpio
> > descriptors. I'll send a patch for cros-ec-spi shortly.
> So do we need any coordinating here, are we OK w/ trogdor devices
> being broken for a short period of time?
> I think the device tree changes switching to use GPIO for chip select
> is already queued in linux-next.  That means if we land this patch
> before the fix to cros_ec [1] then we'll end up in a broken state.
> Would we be able to do some quick landing to get the cros-ec fix into
> v5.10 and then target the SPI patch for 5.11?

I don't think it really matters if the two patches meet up in linux-next
or cros-ec is fast tracked, but it would be bad if this patch was merged
without the cros-ec one. One option would be to apply the cros-ec fix to
the spi tree along with this patch (or vice versa) so that a bisection
hole isn't created. Or this patch can wait for a while until cros-ec is
fixed. I'm not the maintainer here so it's really up to Mark and

> [1]

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