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From: Frank.Li@oss.nxp.com
To: Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>, Frank Li <Frank.Li@nxp.com>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	Fabio Estevam <festevam@gmail.com>,
	devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND
	FLATTENED DEVICE TREE BINDINGS),
	imx@lists.linux.dev (open list:ARM/FREESCALE IMX / MXC /
	LAYERSCAPE ARM ARCHIT...),
	linux-arm-kernel@lists.infradead.org (moderated
	list:ARM/FREESCALE IMX / MXC / LAYERSCAPE ARM ARCHIT...),
	linux-kernel@vger.kernel.org (open list)
Cc: imx@lists.linux.dev, Emanuele Ghidoli <ghidoliemanuele@gmail.com>,
	Peng Fan <peng.fan@oss.nxp.com>
Subject: [PATCH 1/1] Revert "arm64: dts: imx8qm-ss-conn: add usbotg3 iommu information"
Date: Fri,  6 Nov 2026 11:18:08 -0500	[thread overview]
Message-ID: <20261106161809.3512378-1-Frank.Li@oss.nxp.com> (raw)

From: Frank Li <Frank.Li@nxp.com>

This reverts commit 73c3b40e536d9cb624db90b460bc384147576a57. There is
a hack in U-Boot, which calls sc_rm_set_master_sid() to set the SID for
bus masters that depend on power domain information of the node. But
cdns_usb is a child node of the glue driver, which does not need power
domain information.

More time is needed to find a good method to program sc_rm_set_master_sid()
in the kernel and reduce U-Boot dependence. So revert this patch first to
get USB host working again.

Reported-by: Emanuele Ghidoli <ghidoliemanuele@gmail.com>
Link: https://lore.kernel.org/imx/b911ff91-ce7b-462e-a7fb-f8c6d682c85b@gmail.com/
Cc: Peng Fan <peng.fan@oss.nxp.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
 arch/arm64/boot/dts/freescale/imx8qm-ss-conn.dtsi | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8qm-ss-conn.dtsi b/arch/arm64/boot/dts/freescale/imx8qm-ss-conn.dtsi
index f25f62d51f69e..1d1cde2bd879d 100644
--- a/arch/arm64/boot/dts/freescale/imx8qm-ss-conn.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8qm-ss-conn.dtsi
@@ -67,7 +67,3 @@ &usdhc3 {
 	compatible = "fsl,imx8qm-usdhc", "fsl,imx8qxp-usdhc", "fsl,imx7d-usdhc";
 	iommus = <&smmu 0x11 0x7f80>;
 };
-
-&usbotg3_cdns3 {
-	iommus = <&smmu 0x4 0x7f80>;
-};
-- 
2.43.0


                 reply	other threads:[~2026-11-06 16:18 UTC|newest]

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