AW: (EXT) Re: [PATCH 1/2] dt-bindings: mtd: spi-nor: Add output-driver-strength property

On Mon, 05 Oct 2021 14:26:28 +0200, Rob Herring wrote:

From: Rob Herring <robh@kernel.org>
On Mon, 04 Oct 2021 13:15:28 +0200, Alexander Stein wrote:

quoted

From: Alexander Stein <redacted>

This property is for optimizing output voltage impedance and is
specific to each board.

Signed-off-by: Alexander Stein <redacted>
---
I checked Micron and Macronix datasheets. Both have similar but not
identical supported values. Also the register locations are different.
For those reasons I decided to specify the Ohms value directly and let
the device specfic driver figure out if it is supported where to write
it to.
BTW: Are the Ohm values and the corresponding register bits standardized
somewhere?

 Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

Running 'make dtbs_check' with the schema in this patch gives the
following warnings. Consider if they are expected or the schema is
incorrect. These may not be new warnings.

Note that it is not yet a requirement to have 0 warnings for dtbs_check.
This will change in the future.

Full log is available here: https://patchwork.ozlabs.org/patch/1536062

Thanks for pointing that out. I checked the amount of error messages related to
jedec,spi-nor.yaml before and after applying these patches using

ARCH=arm64 make -j12 dtbs_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml 2>&1 > /dev/null | wc -l

with all arm64 platforms enabled. There wasn't a change in the line count,
so I assume this new binding didn't cause them.

Best regards,
Alexander