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

Message ID 20240911084353.28888-3-towinchenmi@gmail.com
State Superseded
Headers show
Series Initial device trees for A7-A11 based Apple devices | expand

Commit Message

Nick Chan Sept. 11, 2024, 8:40 a.m. UTC
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 <towinchenmi@gmail.com>
---
 Documentation/devicetree/bindings/arm/cpus.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

Comments

Conor Dooley Sept. 11, 2024, 6:16 p.m. UTC | #1
On Wed, Sep 11, 2024 at 04:40:51PM +0800, Nick Chan wrote:
> 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 <towinchenmi@gmail.com>
> ---
>  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.

Cheers,
Conor.

>        - arm,arm710t
>        - arm,arm720t
>        - arm,arm740t
> -- 
> 2.46.0
>
Nick Chan Sept. 11, 2024, 6:40 p.m. UTC | #2
On 12/9/2024 02:16, Conor Dooley wrote:
> On Wed, Sep 11, 2024 at 04:40:51PM +0800, Nick Chan wrote:
>> 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 <towinchenmi@gmail.com>
>> ---
>>  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.
> 
>>        - arm,arm710t
>>        - arm,arm720t
>>        - arm,arm740t
>> -- 
>> 2.46.0
>>

Nick Chan
diff mbox series

Patch

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
       - arm,arm710t
       - arm,arm720t
       - arm,arm740t