Thread (3 messages) 3 messages, 3 authors, 2020-08-19

Re: [PATCH 1/8] spi: spi-s3c64xx: swap s3c64xx_spi_set_cs() and s3c64xx_enable_datapath()

From: Mark Brown <broonie@kernel.org>
Date: 2020-08-19 13:21:46
Also in: linux-samsung-soc, linux-spi, lkml

On Wed, Aug 19, 2020 at 02:58:22PM +0200, Krzysztof Kozlowski wrote:
On Wed, Aug 19, 2020 at 02:51:27PM +0200, Lukasz Stelmach wrote:
quoted
Honestly, I don't know and I couldn't find out why. It makes stuff
work. There has been a commit like this before
quoted
    0f5a751ace25 spi/s3c64xx: Enable GPIO /CS prior to starting hardware
quoted
Apparently, it was lost in
quoted
    0732a9d2a155 spi/s3c64xx: Use core message handling
Then describe at least this... maybe Mark knows why he brough back old
code after refactoring?
I'm not sure what's being referred to as being lost in the second commit
TBH.  The first commit is simple code motion rather than a correctness
thing, and more related to the handling of GPIO controlled chip selects
according to the description (which people should be using with that
controller anyway where possible IIRC, the native chip select has too
many assumptions about what it's doing).  I don't know that I ever
actually used a system that used the native chip select as the actual
chip select.  Perhaps some quirk was introduced where the chip select
signal does something?

The commit is also lacking a description of what the issues that are
being fixed are.
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