linux-kernel - [PATCH 5.19 079/207] arm64: dts: imx8mn: remove GPU power domain reset

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Message-Id: <20220926100810.114790618@linuxfoundation.org>
Date:   Mon, 26 Sep 2022 12:11:08 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Marco Felsch <m.felsch@...gutronix.de>,
        Lucas Stach <l.stach@...gutronix.de>,
        Adam Ford <aford173@...il.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.19 079/207] arm64: dts: imx8mn: remove GPU power domain reset

From: Marco Felsch <m.felsch@...gutronix.de>

[ Upstream commit 347155d1fa85972ac19d1bf58ae3f3ce95e51a5d ]

The PGC (power gating controller) already handles the reset for the
GPUMIX power domain. By specifying it within the device tree the reset
it issued a 2nd time. This confuses the hardware during power up and
sporadically hangs the SoC. Fix this by removing the reset property and
let the hardware handle the reset.

Fixes: 9a0f3b157e22e ("arm64: dts: imx8mn: Enable GPU")
Signed-off-by: Marco Felsch <m.felsch@...gutronix.de>
Signed-off-by: Lucas Stach <l.stach@...gutronix.de>
Tested-by: Adam Ford <aford173@...il.com>
Signed-off-by: Shawn Guo <shawnguo@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/arm64/boot/dts/freescale/imx8mn.dtsi | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mn.dtsi b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
index e41e1d56f980..7bd4eecd592e 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
@@ -672,7 +672,6 @@ pgc_gpumix: power-domain@2 {
 							 <&clk IMX8MN_CLK_GPU_SHADER>,
 							 <&clk IMX8MN_CLK_GPU_BUS_ROOT>,
 							 <&clk IMX8MN_CLK_GPU_AHB>;
-						resets = <&src IMX8MQ_RESET_GPU_RESET>;
 					};
 
 					pgc_dispmix: power-domain@3 {
-- 
2.35.1