diff mbox series

[v13,08/17] dt-bindings: fix sifive gpio properties

Message ID 20210118020244.103451-9-damien.lemoal@wdc.com
State Superseded
Headers show
Series None | expand

Checks

Context Check Description
robh/checkpatch success

Commit Message

Damien Le Moal Jan. 18, 2021, 2:02 a.m. UTC
The sifive gpio IP block supports up to 32 GPIOs. Reflect that in the
interrupts property description and maxItems. Also add the standard
ngpios property to describe the number of GPIOs available on the
implementation.

Also add the "canaan,k210-gpiohs" compatible string to indicate the use
of this gpio controller in the Canaan Kendryte K210 SoC. If this
compatible string is used, do not define the clocks property as
required as the K210 SoC does not have a software controllable clock
for the Sifive gpio IP block.

Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Rob Herring <robh@kernel.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
---
 .../devicetree/bindings/gpio/sifive,gpio.yaml | 21 ++++++++++++++++---
 1 file changed, 18 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/gpio/sifive,gpio.yaml b/Documentation/devicetree/bindings/gpio/sifive,gpio.yaml
index ab22056f8b44..2cef18ca737c 100644
--- a/Documentation/devicetree/bindings/gpio/sifive,gpio.yaml
+++ b/Documentation/devicetree/bindings/gpio/sifive,gpio.yaml
@@ -16,6 +16,7 @@  properties:
       - enum:
           - sifive,fu540-c000-gpio
           - sifive,fu740-c000-gpio
+          - canaan,k210-gpiohs
       - const: sifive,gpio0
 
   reg:
@@ -23,9 +24,9 @@  properties:
 
   interrupts:
     description:
-      interrupt mapping one per GPIO. Maximum 16 GPIOs.
+      interrupt mapping one per GPIO. Maximum 32 GPIOs.
     minItems: 1
-    maxItems: 16
+    maxItems: 32
 
   interrupt-controller: true
 
@@ -38,6 +39,10 @@  properties:
   "#gpio-cells":
     const: 2
 
+  ngpios:
+    minimum: 1
+    maximum: 32
+
   gpio-controller: true
 
 required:
@@ -46,10 +51,20 @@  required:
   - interrupts
   - interrupt-controller
   - "#interrupt-cells"
-  - clocks
   - "#gpio-cells"
   - gpio-controller
 
+if:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - sifive,fu540-c000-gpio
+          - sifive,fu740-c000-gpio
+then:
+  required:
+    - clocks
+
 additionalProperties: false
 
 examples: