Hi Laurent,

On Thu, Jun 17, 2021 at 3:57 AM Laurent Pinchart
[off-list ref] wrote:

On Thu, Apr 29, 2021 at 06:47:06PM +0300, Laurent Pinchart wrote:

quoted

On Thu, Apr 29, 2021 at 02:47:31PM +0200, Geert Uytterhoeven wrote:

quoted

The "resets" property is not present on R-Car Gen1 SoCs.
Supporting it would require migrating from renesas,cpg-clocks to
renesas,cpg-mssr.

Reflect this in the DT bindings by removing the global "required:
resets".  All SoCs that do have "resets" properties already have
SoC-specific rules making it required.

Should we drop the

        resets:
        maxItems: 1

from renesas,du-r8a7779 then ? And maybe the

  resets: true

in the general case ?

Any opinion on this ?

Oops, I did reply to this on April 29, but accidentally dropped
all CCs, which made it disappear from your radar, too?

| R-Car H1 does have a reset controller, we just don't have support for
| it in the DT bindings and Linux driver yet.  So from that point of view
| it makes sense to keep it.
|
| Of course we can remove it, and re-add it later if we ever add support,
| as at that time we probably will want to change the bindings anyway
| to make it required again.

And you replied on April 30, also in private:

|> R-Car H1 does have a reset controller, we just don't have support for
| > it in the DT bindings and Linux driver yet.  So from that point of view
| > it makes sense to keep it.
|
| Not sure what we would "keep", given that there's no reset controller
| available :-)
|
| > Of course we can remove it, and re-add it later if we ever add support,
| > as at that time we probably will want to change the bindings anyway
| > to make it required again.
|
| Let's not bother. I doubt H1 will get support for a reset controller as
| that's an old platform, and the DT bindings thus don't matter too much.
| I'll take this patch as-is.
|
| Reviewed-by: Laurent Pinchart [off-list ref]

quoted

quoted

Fixes: 99d66127fad25ebb ("dt-bindings: display: renesas,du: Convert binding to YAML")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
 Documentation/devicetree/bindings/display/renesas,du.yaml | 1 -
 1 file changed, 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/display/renesas,du.yaml b/Documentation/devicetree/bindings/display/renesas,du.yaml
index 552a99ce4f1280d7..e955034da53b86e2 100644
--- a/Documentation/devicetree/bindings/display/renesas,du.yaml
+++ b/Documentation/devicetree/bindings/display/renesas,du.yaml

@@ -89,7 +89,6 @@ required:
   - reg
   - clocks
   - interrupts
-  - resets
   - ports

 allOf:

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds