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From: Shawn Guo <shawn.gsc@gmail.com>
To: Marek Vasut <marex@denx.de>
Cc: linux-arm-kernel@lists.infradead.org,
	Conor Dooley <conor+dt@kernel.org>,
	Fabio Estevam <festevam@gmail.com>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	NXP Linux Team <linux-imx@nxp.com>,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	Rob Herring <robh+dt@kernel.org>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Shawn Guo <shawnguo@kernel.org>,
	devicetree@vger.kernel.org
Subject: Re: [PATCH] arm64: dts: imx8mp: Disable UART4 by default on Data Modul i.MX8M Plus eDM SBC
Date: Sat, 3 Feb 2024 22:15:04 +0800	[thread overview]
Message-ID: <20240203141504.GH463595@dragon> (raw)
In-Reply-To: <20231220000345.42593-1-marex@denx.de>

On Wed, Dec 20, 2023 at 01:02:42AM +0100, Marek Vasut wrote:
> UART4 is used as CM7 coprocessor debug UART and may not be accessible from
> Linux in case it is protected by RDC. The RDC protection is set up by the
> platform firmware. UART4 is not used on this platform by Linux. Disable
> UART4 by default to prevent boot hangs, which occur when the RDC protection
> is in place.
> 
> Fixes: 562d222f23f0 ("arm64: dts: imx8mp: Add support for Data Modul i.MX8M Plus eDM SBC")
> Signed-off-by: Marek Vasut <marex@denx.de>

Applied, thanks!

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http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

WARNING: multiple messages have this Message-ID (diff)
From: Shawn Guo <shawn.gsc@gmail.com>
To: Marek Vasut <marex@denx.de>
Cc: linux-arm-kernel@lists.infradead.org,
	Conor Dooley <conor+dt@kernel.org>,
	Fabio Estevam <festevam@gmail.com>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	NXP Linux Team <linux-imx@nxp.com>,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	Rob Herring <robh+dt@kernel.org>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Shawn Guo <shawnguo@kernel.org>,
	devicetree@vger.kernel.org
Subject: Re: [PATCH] arm64: dts: imx8mp: Disable UART4 by default on Data Modul i.MX8M Plus eDM SBC
Date: Sat, 3 Feb 2024 22:15:04 +0800	[thread overview]
Message-ID: <20240203141504.GH463595@dragon> (raw)
In-Reply-To: <20231220000345.42593-1-marex@denx.de>

On Wed, Dec 20, 2023 at 01:02:42AM +0100, Marek Vasut wrote:
> UART4 is used as CM7 coprocessor debug UART and may not be accessible from
> Linux in case it is protected by RDC. The RDC protection is set up by the
> platform firmware. UART4 is not used on this platform by Linux. Disable
> UART4 by default to prevent boot hangs, which occur when the RDC protection
> is in place.
> 
> Fixes: 562d222f23f0 ("arm64: dts: imx8mp: Add support for Data Modul i.MX8M Plus eDM SBC")
> Signed-off-by: Marek Vasut <marex@denx.de>

Applied, thanks!

  parent reply	other threads:[~2024-02-03 14:15 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-12-20  0:02 [PATCH] arm64: dts: imx8mp: Disable UART4 by default on Data Modul i.MX8M Plus eDM SBC Marek Vasut
2023-12-20  0:02 ` Marek Vasut
2023-12-29 23:01 ` Fabio Estevam
2023-12-29 23:01   ` Fabio Estevam
2024-02-03 14:15 ` Shawn Guo [this message]
2024-02-03 14:15   ` Shawn Guo

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