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dt-bindings: phy: mediatek: tphy: add a property for power-domains

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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@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20241012035016.17667-1-macpaul.lin@mediatek.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Macpaul Lin 2024-10-12 11:50:16 +08:00 committed by Vinod Koul
parent 3f12bf1621
commit 2ac03d0811
1 changed files with 10 additions and 0 deletions
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10
Documentation/devicetree/bindings/phy/mediatek,tphy.yaml
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@ -125,6 +125,16 @@ properties:
$ref: /schemas/types.yaml#/definitions/uint32
default: 28
power-domains:
description:
The TPHY of MediaTek should exist within a power domain. The
developer should be aware that the hardware design of MediaTek TPHY
does not require the addition of MTCMOS. If the power to the TPHY
is turned off, it will impact other functions. From the current
perspective of USB hardware design, even if MTCMOS is added to the
TPHY, it should remain always on.
maxItems: 1
# Required child node:
patternProperties:
"^(usb|pcie|sata)-phy@[0-9a-f]+$":