[PATCH v3 1/2] dt-bindings: mfd: mt6397: Add compatibles for MT6331 RTC and keys

[AngeloGioacchino Del Regno]

The MT6331 PMIC provides many sub modules: regulators, audio
codec, LED controller, keys, RTC and some GPIOs.
It is always paired with a MT6332 Companion PMIC, which provides
thermistors, WLEDs (display LED backlight), secondary AP cluster
regulators, modem clocks, battery charger and fuel gauge.

Add the necessary compatibles to start implementing the basics.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski at linaro.org>
Reviewed-by: Matthias Brugger <matthias.bgg at gmail.com>
---
 Documentation/devicetree/bindings/mfd/mt6397.txt | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/mfd/mt6397.txt b/Documentation/devicetree/bindings/mfd/mt6397.txt
index 293db2a71ef2..500275d2c2b4 100644
--- a/Documentation/devicetree/bindings/mfd/mt6397.txt
+++ b/Documentation/devicetree/bindings/mfd/mt6397.txt
@@ -29,6 +29,7 @@ Optional subnodes:
 - rtc
 	Required properties: Should be one of follows
 		- compatible: "mediatek,mt6323-rtc"
+		- compatible: "mediatek,mt6331-rtc"
 		- compatible: "mediatek,mt6358-rtc"
 		- compatible: "mediatek,mt6397-rtc"
 	For details, see ../rtc/rtc-mt6397.txt
@@ -52,8 +53,10 @@ Optional subnodes:
 	see ../leds/leds-mt6323.txt
 
 - keys
-	Required properties:
-		- compatible: "mediatek,mt6397-keys" or "mediatek,mt6323-keys"
+	Required properties: Should be one of the following
+		- compatible: "mediatek,mt6323-keys"
+		- compatible: "mediatek,mt6331-keys"
+		- compatible: "mediatek,mt6397-keys"
 	see ../input/mtk-pmic-keys.txt
 
 - power-controller
-- 
2.35.1