From: Conor Dooley conor.dooley@microchip.com
The Canaan k210 apparently has a Sysnopsys Designware timer but according to the documentation & devicetree it has 2 interrupts rather than the standard one. Add a custom compatible that supports the 2 interrupt configuration and falls back to the standard binding (which is currently the one in use in the devicetree entry).
Link: https://canaan-creative.com/wp-content/uploads/2020/03/kendryte_standalone_p... #Page 58 Signed-off-by: Conor Dooley conor.dooley@microchip.com --- .../bindings/timer/snps,dw-apb-timer.yaml | 28 +++++++++++++++---- 1 file changed, 22 insertions(+), 6 deletions(-)
diff --git a/Documentation/devicetree/bindings/timer/snps,dw-apb-timer.yaml b/Documentation/devicetree/bindings/timer/snps,dw-apb-timer.yaml index d33c9205a909..9a76acc7a66f 100644 --- a/Documentation/devicetree/bindings/timer/snps,dw-apb-timer.yaml +++ b/Documentation/devicetree/bindings/timer/snps,dw-apb-timer.yaml @@ -12,6 +12,9 @@ maintainers: properties: compatible: oneOf: + - items: + - const: canaan,k210-apb-timer + - const: snps,dw-apb-timer - const: snps,dw-apb-timer - enum: - snps,dw-apb-timer-sp @@ -21,9 +24,6 @@ properties: reg: maxItems: 1
- interrupts: - maxItems: 1 - resets: maxItems: 1
@@ -41,7 +41,23 @@ properties:
clock-frequency: true
-additionalProperties: false +unevaluatedProperties: false + +if: + properties: + compatible: + contains: + const: canaan,k210-apb-timer + +then: + properties: + interrupts: + maxItems: 2 + +else: + properties: + interrupts: + maxItems: 1
required: - compatible @@ -60,8 +76,8 @@ oneOf: examples: - | timer@ffe00000 { - compatible = "snps,dw-apb-timer"; - interrupts = <0 170 4>; + compatible = "canaan,k210-apb-timer", "snps,dw-apb-timer"; + interrupts = <0 170 4>, <0 170 4>; reg = <0xffe00000 0x1000>; clocks = <&timer_clk>, <&timer_pclk>; clock-names = "timer", "pclk";