[PATCH v2 06/16] dt-bindings: timer: add Canaan k210 to Synopsys DesignWare timer

From: Conor Dooley
Date: Mon Jun 27 2022 - 15:41:49 EST


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
+
+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