Re: [PATCH v8 2/3] dt-bindings: arm: cpus: Document 'mediatek,freq-domain' property

From: Lukasz Luba
Date: Fri Nov 20 2020 - 03:35:39 EST




On 11/19/20 5:13 PM, Sudeep Holla wrote:
On Thu, Nov 19, 2020 at 03:23:20PM +0000, Lukasz Luba wrote:


On 10/28/20 3:08 PM, Rob Herring wrote:
On Mon, Oct 26, 2020 at 04:19:08PM +0800, Hector Yuan wrote:
From: "Hector.Yuan" <hector.yuan@xxxxxxxxxxxx>

Add devicetree documentation for 'mediatek,freq-domain' property specific
to Mediatek CPUs. This property is used to reference the CPUFREQ node
along with the domain id.

Signed-off-by: Hector.Yuan <hector.yuan@xxxxxxxxxxxx>
---
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 1222bf1..e995b26 100644
--- a/Documentation/devicetree/bindings/arm/cpus.yaml
+++ b/Documentation/devicetree/bindings/arm/cpus.yaml
@@ -255,6 +255,12 @@ properties:
where voltage is in V, frequency is in MHz.
+ mediatek,freq-domain:
+ $ref: '/schemas/types.yaml#/definitions/phandle-array'
+ description:
+ CPUs supporting freq-domain must set their "mediatek,freq-domain" property
+ with phandle to a cpufreq_hw node followed by the domain id.

This needs to be a common binding shared with SCMI domains.

Would it be accurate to create a new binding file:
Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek-hw.txt
?


Nope, Rob already asked to unify all such bindings and generalise it.
Here is my attempt[1] and this must just use it or help to enhance that
in order to make use of that binding.


That's great. Thank you for the information.

Regards,
Lukasz