linux-kernel - [PATCH 2/3] dt-bindings: watchdog: sunxi: Add compatible for D1

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Message-Id: <20210726035143.53132-2-samuel@sholland.org>
Date:   Sun, 25 Jul 2021 22:51:42 -0500
From:   Samuel Holland <samuel@...lland.org>
To:     Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Rob Herring <robh+dt@...nel.org>,
        Maxime Ripard <mripard@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-sunxi@...ts.linux.dev, linux-watchdog@...r.kernel.org,
        linux-kernel@...r.kernel.org, Samuel Holland <samuel@...lland.org>
Subject: [PATCH 2/3] dt-bindings: watchdog: sunxi: Add compatible for D1

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.

Signed-off-by: Samuel Holland <samuel@...lland.org>
---
 .../devicetree/bindings/watchdog/allwinner,sun4i-a10-wdt.yaml   | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/watchdog/allwinner,sun4i-a10-wdt.yaml b/Documentation/devicetree/bindings/watchdog/allwinner,sun4i-a10-wdt.yaml
index 853ceb1b7c0f..756e6ab99860 100644
--- a/Documentation/devicetree/bindings/watchdog/allwinner,sun4i-a10-wdt.yaml
+++ b/Documentation/devicetree/bindings/watchdog/allwinner,sun4i-a10-wdt.yaml
@@ -29,6 +29,7 @@ properties:
       - items:
           - const: allwinner,suniv-f1c100s-wdt
           - const: allwinner,sun4i-a10-wdt
+      - const: allwinner,sun20i-d1-wdt
 
   reg:
     maxItems: 1
@@ -59,6 +60,7 @@ if:
     compatible:
       contains:
         enum:
+          - allwinner,sun20i-d1-wdt
           - allwinner,sun50i-r329-wdt
 
 then:
-- 
2.31.1