linux-kernel - [PATCH v2] arm64: dts: mediatek: mt8195: Fix dtbs

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Message-ID: <20241008071540.32607-1-macpaul.lin@mediatek.com>
Date: Tue, 8 Oct 2024 15:15:40 +0800
From: Macpaul Lin <macpaul.lin@...iatek.com>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Matthias Brugger
	<matthias.bgg@...il.com>, AngeloGioacchino Del Regno
	<angelogioacchino.delregno@...labora.com>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-mediatek@...ts.infradead.org>, Seiya Wang <seiya.wang@...iatek.com>,
	Tinghan Shen <tinghan.shen@...iatek.com>, Chunfeng Yun
	<chunfeng.yun@...iatek.com>, Alexandre Mergnat <amergnat@...libre.com>
CC: Bear Wang <bear.wang@...iatek.com>, Pablo Sun <pablo.sun@...iatek.com>,
	Macpaul Lin <macpaul.lin@...iatek.com>, Macpaul Lin <macpaul@...il.com>, Sen
 Chu <sen.chu@...iatek.com>, Chris-qj chen <chris-qj.chen@...iatek.com>,
	MediaTek Chromebook Upstream
	<Project_Global_Chrome_Upstream_Group@...iatek.com>, Chen-Yu Tsai
	<wenst@...omium.org>
Subject: [PATCH v2] arm64: dts: mediatek: mt8195: Fix dtbs_check error for tphy

The u3phy1 node in mt8195.dtsi was triggering a dtbs_check error.
The error message was:
  t-phy@...30000: 'power-domains' does not match any of the regexes:
    '^(usb|pcie|sata)-phy@[0-9a-f]+$', 'pinctrl-[0-9]+'
Fix this issue by dropping 'power-domains' of u3phy1 node.

This is because MediaTek tphy dose not need to add mtcmos.  It is not
necessary to add 'power-domains'. If the power of the tphy is turned off,
it will affect other functions. From the current USB hardware design
perspective, even if mtcmos is added to the phy, it is always on.

Fixes: 37f2582883be ("arm64: dts: Add mediatek SoC mt8195 and evaluation board")
Signed-off-by: Macpaul Lin <macpaul.lin@...iatek.com>
---
 arch/arm64/boot/dts/mediatek/mt8195.dtsi | 1 -
 1 file changed, 1 deletion(-)

Changes for v2:
 - Add detail description of the tphy design for explaining the reason
   of this change.

diff --git a/arch/arm64/boot/dts/mediatek/mt8195.dtsi b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
index ade685ed2190..1c6f08dde31c 100644
--- a/arch/arm64/boot/dts/mediatek/mt8195.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
@@ -1920,7 +1920,6 @@ u3phy1: t-phy@...30000 {
 			#address-cells = <1>;
 			#size-cells = <1>;
 			ranges = <0 0 0x11e30000 0xe00>;
-			power-domains = <&spm MT8195_POWER_DOMAIN_SSUSB_PCIE_PHY>;
 			status = "disabled";
 
 			u2port1: usb-phy@0 {
-- 
2.45.2