On Fri, May 21, 2021 at 9:54 AM Geert Uytterhoeven
[off-list ref] wrote:

Convert the PCF857x-compatible I/O expanders Device Tree binding
documentation to json-schema.

Document missing compatible values, properties, and gpio hogs.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

(...)

Perhaps the "ti,pcf8575" construct should be removed, and the few users
fixed instead?

You would rather list it as deprecated I think?
It is ABI...

+  gpio-controller: true

So this is implicitly using the generic schema in
/dtschema/schemas/gpio/gpio.yaml

+  lines-initial-states:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Bitmask that specifies the initial state of each line.
+      When a bit is set to zero, the corresponding line will be initialized to
+      the input (pulled-up) state.
+      When the  bit is set to one, the line will be initialized to the
+      low-level output state.
+      If the property is not specified all lines will be initialized to the
+      input state.

Is this something we standardized or something that should
actually be a custom "nxp," property we just missed it?
(Looks like the latter... oh well, now it is there.)

+patternProperties:
+  "^(hog-[0-9]+|.+-hog(-[0-9]+)?)$":
+    type: object

But this is already in
/dtschema/schemas/gpio/gpio-hog.yaml
for nodename, isn't that where it properly belongs?

I'm however confused here Rob will know what to do.

required:
  - gpio-hog
  - gpios

This is already in
/dtschema/schemas/gpio/gpio-hog.yaml
as well?

Yours,
Linus Walleij