@@ -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 +39,14 @@ properties:
"#gpio-cells":
const: 2
+ ngpios:
+ description:
+ The number of GPIOs available on the controller implementation.
+ It is 16 for the SiFive SoCs and 32 for the Canaan K210.
+ minimum: 1
+ maximum: 32
+ default: 16
+
gpio-controller: true
required:
@@ -46,10 +55,20 @@ 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:
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 | 25 ++++++++++++++++--- 1 file changed, 22 insertions(+), 3 deletions(-)