Thread (37 messages) 37 messages, 3 authors, 2024-09-11

Re: [PATCH 01/22] dt-bindings: arm: cpus: Add Apple A7-A11 CPU cores

From: Nick Chan <hidden>
Date: 2024-09-11 18:40:15
Also in: asahi, linux-arm-kernel, linux-gpio, linux-pm, linux-watchdog, lkml


On 12/9/2024 02:16, Conor Dooley wrote:
On Wed, Sep 11, 2024 at 04:40:51PM +0800, Nick Chan wrote:
quoted
Add the following CPU cores:

- apple,cyclone: A7 cores
- apple,typhoon: A8 cores
- apple,twister: A9 cores
- apple,hurricane-zephyr: A10 logical cores
- apple,monsoon: A11 performance cores
- apple,mistral: A11 efficiency cores

In the Apple A10, there are physical performance-efficiency cores that
forms logical cores to software depending on the current p-state, and
only one type of core may be active at one time.

Signed-off-by: Nick Chan <redacted>
---
 Documentation/devicetree/bindings/arm/cpus.yaml | 6 ++++++
 1 file changed, 6 insertions(+)
diff --git a/Documentation/devicetree/bindings/arm/cpus.yaml b/Documentation/devicetree/bindings/arm/cpus.yaml
index f308ff6c3532..3959e022079f 100644
--- a/Documentation/devicetree/bindings/arm/cpus.yaml
+++ b/Documentation/devicetree/bindings/arm/cpus.yaml
@@ -89,6 +89,12 @@ properties:
       - apple,blizzard
       - apple,icestorm
       - apple,firestorm
+      - apple,mistral
+      - apple,monsoon
+      - apple,hurricane-zephyr
+      - apple,twister
+      - apple,typhoon
+      - apple,cyclone
Same on this one, can you add these in alphanumerical order, even if the
existing 3 devices are not in it? You could take the opportunity to
reshuffle icestorm and firestorm while you're at it.
(Same goes for the watchdog, pinctrl and cluster-cpufreq bindings)
I am not actually sure what is the right thing to do here. It seems that
these bindings are
originally sorted using SoC types (desktop or mobile) and generations.
But then again I have
looked at some other in-tree bindings from asahi, and it seems to be a
mix of alphabetical
and logical sorting in the way mentioned above.

Maybe we can get some clarification from an Asahi Maintainer?

For the soc-level machine compatibles though, I believe that should be
retaining the logical
order instead of trying to use alphabetical order.
Cheers,
Conor.
quoted
       - arm,arm710t
       - arm,arm720t
       - arm,arm740t
-- 
2.46.0
Nick Chan
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