Re: [PATCH v3] arm64: dts: meson: Fix mmc cd-gpios polarity

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Hello,

On Fri 11 Jan 2019 at 19:55, Kevin Hilman wrote:

Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx> writes:

Hi,

some nit-picks as well as my Tested-by (in case it's not too late) below.
thank you for taking care of this!

You're welcome !
On Thu, Jan 10, 2019 at 4:40 PM Loys Ollivier <lollivier@xxxxxxxxxxxx> wrote:

Commit 89a5e15bcba8 ("gpio/mmc/of: Respect polarity in the device tree")
changed the behavior of "cd-inverted" to follow the device tree bindings
specification.
Lines specifying "cd-inverted" are now "active high".
this depends on the polarity from the cd-gpios property. above commit
caused cd-inverted to be applied twice (effectively making it a
no-op). thus "cd-inverted" only means "active high" if cd-gpios also
sets GPIO_ACTIVE_HIGH. if the polarity in cd-gpios is GPIO_ACTIVE_LOW
together with "cd-inverted" then the GPIO will be treated as active
low.

Hum ok so there's more to it than the commit message. I'll come by with
something clearer for a v4. Thank you for the clarification.
Fix the SD card for meson by setting the cd-gpios as "active low" according
to the boards specifications.
not only switching to GPIO_ACTIVE_LOW, also dropping "cd-inverted"

Indeed.
Fixes: 89a5e15bcba8 ("gpio/mmc/of: Respect polarity in the device tree")
in my patches for the 32-bit boards I used the commit which added SD
card support to the board for the Fixes tag. however, I'm fine with
this as well (I just wanted to point out that there's a small
difference in our commits).

OK, I treat fixes tags as:
from the introduction (or discovery) of a regression (or bug), the
"Fixes" commit will patch the commit that introduced the regression.
Hence why I tagged the commit from which the platform was not acting
correctly anymore. If that's fine for you it's fine for me as well :)
Signed-off-by: Loys Ollivier <lollivier@xxxxxxxxxxxx>
on my Khadas VIM(1), using Kevin's v5.0/fixes branch:
Tested-by: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx>

I can add this tested-by tag in my v5.0/fixes branch for now, and can
replace it with a follow up if Loys can update the changelog with your
suggestions/clarifications.

Will do.
Thanks,

Kevin


--
-L



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