On Sat, Jun 18, 2022 at 01:30:27PM +0100, Conor Dooley wrote: > From: Conor Dooley <conor.dooley@xxxxxxxxxxxxx> > > 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_programming_guide_20190311144158_en.pdf #Page 58 > Signed-off-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx> > --- > .../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 When more than 1, you need to define what they are and the order. > + > +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"; > -- > 2.36.1 > >
