[PATCH v2 1/9] dt-bindings: arm: cpus: Add Apple M4 CPU core compatibles

Yureka Lilian <[email protected]> Sat, 01 Aug 2026 23:40:31 +0200
Newsgroups org.kernel.vger.linux-i2c,dev.linux.lists.asahi,org.infradead.lists.linux-arm-kernel,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-gpio,org.kernel.vger.linux-kernel,org.kernel.vger.linux-pwm
Message-ID <20260801-apple-m4-initial-devicetrees-v2-1-5cb07cc275da@cyberchaos.dev>
The core types of the M4 SoC no longer carry individual codenames.
Apple's device trees re-use the 'everest' and 'sawtooth' codenames from
the M3 generation for all later cores.

Instead, we use a combination of the SoC's codename ('Donan') and the
type of core ('e' and 'p' for the efficiency and performance cores
respectively) as compatible for these cores.

Acked-by: Krzysztof Kozlowski <[email protected]>
Signed-off-by: Yureka Lilian <[email protected]>
---
 Documentation/devicetree/bindings/arm/cpus.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/cpus.yaml b/Documentation/devicetree/bindings/arm/cpus.yaml
index 5be89c584026..c328e9fb9843 100644
--- a/Documentation/devicetree/bindings/arm/cpus.yaml
+++ b/Documentation/devicetree/bindings/arm/cpus.yaml
@@ -86,6 +86,8 @@ properties:
           - apple,avalanche
           - apple,blizzard
           - apple,cyclone
+          - apple,donan-e
+          - apple,donan-p
           - apple,everest
           - apple,firestorm
           - apple,hurricane-zephyr

-- 
2.55.0