linux-kernel - [PATCH v1] arm64: dts: imx8mm: fix missing pgc_vpu

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Date: Tue,  9 Apr 2024 09:58:02 +0100
From: Vitor Soares <ivitro@...il.com>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>
Cc: Vitor Soares <vitor.soares@...adex.com>,
	devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Lucas Stach <l.stach@...gutronix.de>,
	stable@...r.kernel.org
Subject: [PATCH v1] arm64: dts: imx8mm: fix missing pgc_vpu_* power domain parent

From: Vitor Soares <vitor.soares@...adex.com>

The pgc_vpu_* nodes miss the reference to the power domain parent,
leading the system to hang during the resume.

As these PU domains are nested inside the vpumix domain, let's reference
it accordingly. After this change, the suspend/resume is working.

Cc: Lucas Stach <l.stach@...gutronix.de>
Cc: <stable@...r.kernel.org>
Closes: https://lore.kernel.org/all/fccbb040330a706a4f7b34875db1d896a0bf81c8.camel@gmail.com/
Fixes: d39d4bb15310 ("arm64: dts: imx8mm: add GPC node")
Signed-off-by: Vitor Soares <vitor.soares@...adex.com>
---
 arch/arm64/boot/dts/freescale/imx8mm.dtsi | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
index 8a1b42b94dce..97d0c6d23ad8 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
@@ -739,16 +739,19 @@ pgc_vpumix: power-domain@6 {
 					pgc_vpu_g1: power-domain@7 {
 						#power-domain-cells = <0>;
 						reg = <IMX8MM_POWER_DOMAIN_VPUG1>;
+						power-domains = <&pgc_vpumix>;
 					};
 
 					pgc_vpu_g2: power-domain@8 {
 						#power-domain-cells = <0>;
 						reg = <IMX8MM_POWER_DOMAIN_VPUG2>;
+						power-domains = <&pgc_vpumix>;
 					};
 
 					pgc_vpu_h1: power-domain@9 {
 						#power-domain-cells = <0>;
 						reg = <IMX8MM_POWER_DOMAIN_VPUH1>;
+						power-domains = <&pgc_vpumix>;
 					};
 
 					pgc_dispmix: power-domain@10 {
-- 
2.34.1