* [PATCH] arm64: dts: imx8mm-venice-gw7901.dts: disable pgc_gpumix
@ 2021-10-05 15:23 Tim Harvey
2021-10-06 7:22 ` Lucas Stach
0 siblings, 1 reply; 2+ messages in thread
From: Tim Harvey @ 2021-10-05 15:23 UTC (permalink / raw)
To: Shawn Guo, Rob Herring, Sascha Hauer, Pengutronix Kernel Team,
Fabio Estevam, NXP Linux Team, linux-arm-kernel, linux-kernel
Cc: Tim Harvey, Lucas Stach
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
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] arm64: dts: imx8mm-venice-gw7901.dts: disable pgc_gpumix
2021-10-05 15:23 [PATCH] arm64: dts: imx8mm-venice-gw7901.dts: disable pgc_gpumix Tim Harvey
@ 2021-10-06 7:22 ` Lucas Stach
0 siblings, 0 replies; 2+ messages in thread
From: Lucas Stach @ 2021-10-06 7:22 UTC (permalink / raw)
To: Tim Harvey, Shawn Guo, Rob Herring, Sascha Hauer,
Pengutronix Kernel Team, Fabio Estevam, NXP Linux Team,
linux-arm-kernel, linux-kernel
Am Dienstag, dem 05.10.2021 um 08:23 -0700 schrieb Tim Harvey:
> 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";
> +};
I suggest to also disable the pgc_gpu, as that one is in the same
situation as the GPU devices and will stay in probe deferred state
forever, as the gpumix domain is not available.
Regards,
Lucas
> +
> &uart1 {
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_uart1>, <&pinctrl_uart1_gpio>;
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