[PATCH] arm64: dts: imx8mm-venice-gw7901.dts: disable pgc_gpumix

[Tim Harvey <tharvey@gateworks.com>]

Since commit d39d4bb15310 ("arm64: dts: imx8mm: add GPC node") the
GW7901 will hang during kernel init because it does not power the unused GPU
voltage rails on the IMX8MM. Disable pgc_gpumix to work around this.

We also disable the GPU devices that depend on the gpumix power domain
to avoid them staying in a probe deferred state forever.

Cc: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
---
 .../boot/dts/freescale/imx8mm-venice-gw7901.dts      | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw7901.dts b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw7901.dts
index bafd5c8ea4e2..e0153ce35722 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw7901.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw7901.dts
@@ -282,6 +282,14 @@
 	};
 };
 
+&gpu_2d {
+	status = "disabled";
+};
+
+&gpu_3d {
+	status = "disabled";
+};
+
 &i2c1 {
 	clock-frequency = <100000>;
 	pinctrl-names = "default";
@@ -632,6 +640,10 @@
 	status = "okay";
 };
 
+&pgc_gpumix {
+	status = "disabled";
+};
+
 &uart1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_uart1>, <&pinctrl_uart1_gpio>;
-- 
2.17.1