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-rw-r--r--dts/Bindings/gpio/gpio-aspeed.txt7
1 files changed, 5 insertions, 2 deletions
diff --git a/dts/Bindings/gpio/gpio-aspeed.txt b/dts/Bindings/gpio/gpio-aspeed.txt
index 7e9b586770..b2033fc3a7 100644
--- a/dts/Bindings/gpio/gpio-aspeed.txt
+++ b/dts/Bindings/gpio/gpio-aspeed.txt
@@ -2,7 +2,8 @@ Aspeed GPIO controller Device Tree Bindings
-------------------------------------------
Required properties:
-- compatible : Either "aspeed,ast2400-gpio" or "aspeed,ast2500-gpio"
+- compatible : Either "aspeed,ast2400-gpio", "aspeed,ast2500-gpio",
+ or "aspeed,ast2600-gpio".
- #gpio-cells : Should be two
- First cell is the GPIO line number
@@ -17,7 +18,9 @@ Required properties:
Optional properties:
-- clocks : A phandle to the clock to use for debounce timings
+- clocks : A phandle to the clock to use for debounce timings
+- ngpios : Number of GPIOs controlled by this controller. Should be set
+ when there are multiple GPIO controllers on a SoC (ast2600).
The gpio and interrupt properties are further described in their respective
bindings documentation: