On Thu, Sep 02, 2021 at 05:57:49PM -0500, Samuel Holland wrote: > D1 keeps the same register layout and clock sources as the R329, but it > adds a key field which must be set to update the watchdog's "CFG" and > "MODE" registers. Therefore it is not backward-compatible. > > Similarly to the R329, the D1 has three watchdog instances, and only one > of them has the "soft reset" registers. So that instance needs an extra > compatible string. > > Signed-off-by: Samuel Holland <samuel@xxxxxxxxxxxx> > Acked-by: Maxime Ripard <maxime@xxxxxxxxxx> Acked-by: Guenter Roeck <linux@xxxxxxxxxxxx> > --- > Changes v2 to v3: > - Add additional allwinner,sun20i-d1-wdt-reset compatible > Changes v1 to v2: > - None > > .../bindings/watchdog/allwinner,sun4i-a10-wdt.yaml | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/Documentation/devicetree/bindings/watchdog/allwinner,sun4i-a10-wdt.yaml b/Documentation/devicetree/bindings/watchdog/allwinner,sun4i-a10-wdt.yaml > index 877f47759814..44cad9427ae6 100644 > --- a/Documentation/devicetree/bindings/watchdog/allwinner,sun4i-a10-wdt.yaml > +++ b/Documentation/devicetree/bindings/watchdog/allwinner,sun4i-a10-wdt.yaml > @@ -30,6 +30,10 @@ properties: > - items: > - const: allwinner,suniv-f1c100s-wdt > - const: allwinner,sun4i-a10-wdt > + - const: allwinner,sun20i-d1-wdt > + - items: > + - const: allwinner,sun20i-d1-wdt-reset > + - const: allwinner,sun20i-d1-wdt > > reg: > maxItems: 1 > @@ -62,6 +66,8 @@ if: > compatible: > contains: > enum: > + - allwinner,sun20i-d1-wdt > + - allwinner,sun20i-d1-wdt-reset > - allwinner,sun50i-r329-wdt > - allwinner,sun50i-r329-wdt-reset >
