From: Shawn Guo <shawnguo@kernel.org>
To: Tim Harvey <tharvey@gateworks.com>
Cc: Rob Herring <robh+dt@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
NXP Linux Team <linux-imx@nxp.com>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Adam Ford <aford173@gmail.com>,
Lucas Stach <l.stach@pengutronix.de>
Subject: Re: [PATCH] arm64: dts: imx8mn-venice-gw7902: disable gpu
Date: Wed, 26 Jan 2022 17:35:58 +0800 [thread overview]
Message-ID: <20220126093558.GL4686@dragon> (raw)
In-Reply-To: <20211216161227.31960-1-tharvey@gateworks.com>
On Thu, Dec 16, 2021 at 08:12:27AM -0800, Tim Harvey wrote:
> 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.
I do not quite follow on this. i.MX8MN integrates a GPU, and
MIMX8MN5CVTI is built on i.MX8MN, correct? If so, how comes
MIMX8MN5CVTI doesn't 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.
Is this an indication that GPU should be disabled in imx8mn.dtsi and
enabled board by board?
Shawn
>
> Cc: Adam Ford <aford173@gmail.com>
> Cc: Lucas Stach <l.stach@pengutronix.de>
> Signed-off-by: Tim Harvey <tharvey@gateworks.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
>
next prev parent reply other threads:[~2022-01-26 9:36 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-16 16:12 [PATCH] arm64: dts: imx8mn-venice-gw7902: disable gpu Tim Harvey
2021-12-16 17:02 ` Adam Ford
2022-01-26 9:35 ` Shawn Guo [this message]
2022-01-26 9:58 ` Lucas Stach
2022-01-26 11:56 ` Shawn Guo
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