linux-kernel - [PATCH] arm64: dts: imx8mn-venice-gw7902: disable gpu

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Message-Id: <20211216161227.31960-1-tharvey@gateworks.com>
Date:   Thu, 16 Dec 2021 08:12:27 -0800
From:   Tim Harvey <tharvey@...eworks.com>
To:     Rob Herring <robh+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>,
        NXP Linux Team <linux-imx@....com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Cc:     Tim Harvey <tharvey@...eworks.com>, Adam Ford <aford173@...il.com>,
        Lucas Stach <l.stach@...gutronix.de>
Subject: [PATCH] arm64: dts: imx8mn-venice-gw7902: disable gpu

Since commit 99aa29932271 ("arm64: dts: imx8mn: Enable GPU")
imx8mn-venice-gw7902 will hang during kernel init because it uses
a MIMX8MN5CVTI which does not have a GPU.

Disable pgc_gpumix to work around this. We also disable the GPU devices
that depend on the gpumix power domain and pgc_gpu to avoid them staying
in a probe deferred state forever.

Cc: Adam Ford <aford173@...il.com>
Cc: Lucas Stach <l.stach@...gutronix.de>
Signed-off-by: Tim Harvey <tharvey@...eworks.com>
---
 .../boot/dts/freescale/imx8mn-venice-gw7902.dts      | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mn-venice-gw7902.dts b/arch/arm64/boot/dts/freescale/imx8mn-venice-gw7902.dts
index 236f425e1570..2d58005d20e4 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn-venice-gw7902.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mn-venice-gw7902.dts
@@ -220,6 +220,10 @@
 	};
 };
 
+&disp_blk_ctrl {
+	status = "disabled";
+};
+
 /* off-board header */
 &ecspi2 {
 	pinctrl-names = "default";
@@ -251,6 +255,10 @@
 	};
 };
 
+&gpu {
+	status = "disabled";
+};
+
 &i2c1 {
 	clock-frequency = <100000>;
 	pinctrl-names = "default";
@@ -546,6 +554,10 @@
 	status = "okay";
 };
 
+&pgc_gpumix {
+	status = "disabled";
+};
+
 /* off-board header */
 &sai3 {
 	pinctrl-names = "default";
-- 
2.17.1