On Fri, 21 Feb 2020 11:10:01 +0900, Masahiro Yamada wrote:

Convert the UniPhier GPIO controller binding to DT schema format.

I omitted the 'gpio-ranges' property because it is defined in the
dt-schema project (/schemas/gpio/gpio.yaml).

As of writing, the 'gpio-ranges-group-names' is not defined in that
file despite it is a common property described in
Documentation/devicetree/bindings/gpio/gpio.txt
So, I defined it in this schema.

Signed-off-by: Masahiro Yamada <redacted>
---

I have a question about the range about 'ngpio'.

  ngpios:
    minimum: 0
    maximum: 512

The 'ngpio' property is already defined as 'uint32' in the dt-schema tool:
https://github.com/robherring/dt-schema/blob/master/schemas/gpio/gpio.yaml#L20

'uint32' is unsigned, so 'minimum: 0' looks too obvious.

I cannot omit the minimum because minimum and maximum depend on each other.
I just put a sensible number, 512, in maximum.

If this range is entirely unneeded, I will delete it.

This property is generally for when you can have some number less 
than a maximum number implied by the compatible string. 

If there is really no max (e.g. 2^32 - 1 is valid), then just do 
'ngpios: true'

 .../bindings/gpio/gpio-uniphier.txt           | 51 -----------
 .../gpio/socionext,uniphier-gpio.yaml         | 89 +++++++++++++++++++
 MAINTAINERS                                   |  2 +-
 3 files changed, 90 insertions(+), 52 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/gpio/gpio-uniphier.txt
 create mode 100644 Documentation/devicetree/bindings/gpio/socionext,uniphier-gpio.yaml

My bot found errors running 'make dt_binding_check' on your patch:

Documentation/devicetree/bindings/display/simple-framebuffer.example.dts:21.16-37.11: Warning (chosen_node_is_root): /example-0/chosen: chosen node must be at root node
Error: Documentation/devicetree/bindings/gpio/socionext,uniphier-gpio.example.dts:38.34-35 syntax error
FATAL ERROR: Unable to parse input tree
scripts/Makefile.lib:300: recipe for target 'Documentation/devicetree/bindings/gpio/socionext,uniphier-gpio.example.dt.yaml' failed
make[1]: *** [Documentation/devicetree/bindings/gpio/socionext,uniphier-gpio.example.dt.yaml] Error 1
Makefile:1263: recipe for target 'dt_binding_check' failed
make: *** [dt_binding_check] Error 2

See https://patchwork.ozlabs.org/patch/1241747
Please check and re-submit.