[tip: timers/clocksource] dt-bindings: timer: Add SiFive CLINT2

["tip-bot2 for Nick Hu" <tip-bot2@linutronix.de>]

The following commit has been merged into the timers/clocksource branch of tip:

Commit-ID:     0f920690a82cc99ae08cab08bee2e5685b62fd04
Gitweb:        https://git.kernel.org/tip/0f920690a82cc99ae08cab08bee2e5685b62fd04
Author:        Nick Hu <nick.hu@sifive.com>
AuthorDate:    Fri, 21 Mar 2025 16:35:06 +08:00
Committer:     Daniel Lezcano <daniel.lezcano@linaro.org>
CommitterDate: Sun, 23 Mar 2025 10:55:43 +01:00

dt-bindings: timer: Add SiFive CLINT2

Add compatible string and property for the SiFive CLINT v2. The SiFive
CLINT v2 is incompatible with the SiFive CLINT v0 due to differences
in their control methods.

Signed-off-by: Nick Hu <nick.hu@sifive.com>
Reviewed-by: Samuel Holland <samuel.holland@sifive.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20250321083507.25298-1-nick.hu@sifive.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
---
 Documentation/devicetree/bindings/timer/sifive,clint.yaml | 22 +++++++-
 1 file changed, 22 insertions(+)

diff --git a/Documentation/devicetree/bindings/timer/sifive,clint.yaml b/Documentation/devicetree/bindings/timer/sifive,clint.yaml
index 73edde5..653e2e0 100644
--- a/Documentation/devicetree/bindings/timer/sifive,clint.yaml
+++ b/Documentation/devicetree/bindings/timer/sifive,clint.yaml
@@ -37,6 +37,12 @@ properties:
               - starfive,jh8100-clint   # StarFive JH8100
           - const: sifive,clint0        # SiFive CLINT v0 IP block
       - items:
+          - {}
+          - const: sifive,clint2        # SiFive CLINT v2 IP block
+        description:
+          SiFive CLINT v2 is the HRT that supports the Zicntr. The control of sifive,clint2
+          differs from that of sifive,clint0, making them incompatible.
+      - items:
           - enum:
               - allwinner,sun20i-d1-clint
               - sophgo,cv1800b-clint
@@ -62,6 +68,22 @@ properties:
     minItems: 1
     maxItems: 4095
 
+  sifive,fine-ctr-bits:
+    maximum: 15
+    description: The width in bits of the fine counter.
+
+if:
+  properties:
+    compatible:
+      contains:
+        const: sifive,clint2
+then:
+  required:
+    - sifive,fine-ctr-bits
+else:
+  properties:
+    sifive,fine-ctr-bits: false
+
 additionalProperties: false
 
 required: