Include the MediaTek TPHY in a power domain. Add the 'power-domains'
property in the Device Tree (DT) Schema and set 'maxItems: 1'.
Also, include a reminder in the description of the 'power-domains'
property.
Signed-off-by: Macpaul Lin <macpaul.lin@xxxxxxxxxxxx>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
---
.../devicetree/bindings/phy/mediatek,tphy.yaml | 10 ++++++++++
1 file changed, 10 insertions(+)
Changes for v2:
- Add a reminder in description of 'power-domains' property.
- Fix commit message from v1.
Changes for v3:
- Use 'imperative mood' keyword in the prompt of chatGPT to refine the commit
message.
- Add 'Acked-by:' tag, thanks for the review and grammer tool sharing.
diff --git a/Documentation/devicetree/bindings/phy/mediatek,tphy.yaml b/Documentation/devicetree/bindings/phy/mediatek,tphy.yaml
index 423b7c4e62f2..6be3aa4557e5 100644
--- a/Documentation/devicetree/bindings/phy/mediatek,tphy.yaml
+++ b/Documentation/devicetree/bindings/phy/mediatek,tphy.yaml
@@ -125,6 +125,16 @@ properties:
$ref: /schemas/types.yaml#/definitions/uint32
default: 28
+ power-domains:
+ description:
+ The TPHY of MediaTek should exist within a power domain. The
+ developer should be aware that the hardware design of MediaTek TPHY
+ does not require the addition of MTCMOS. If the power to the TPHY
+ is turned off, it will impact other functions. From the current
+ perspective of USB hardware design, even if MTCMOS is added to the
+ TPHY, it should remain always on.
+ maxItems: 1
+
# Required child node:
patternProperties:
"^(usb|pcie|sata)-phy@[0-9a-f]+$":
--
2.45.2
