From: Frank Li Date: Mon, 15 May 2023 16:20:53 +0000 (-0400) Subject: arm64: dts: imx8: fix USB 3.0 Gadget Failure in QM & QXPB0 at super speed X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=0f554e37dad416f445cd3ec5935f5aec1b0e7ba5;p=linux.git arm64: dts: imx8: fix USB 3.0 Gadget Failure in QM & QXPB0 at super speed Resolve USB 3.0 gadget failure for QM and QXPB0 in super speed mode with single IN and OUT endpoints, like mass storage devices, due to incorrect ACTUAL_MEM_SIZE in ep_cap2 (32k instead of actual 18k). Implement dt property cdns,on-chip-buff-size to override ep_cap2 and set it to 18k for imx8QM and imx8QXP chips. No adverse effects for 8QXP C0. Cc: stable@vger.kernel.org Fixes: dce49449e04f ("usb: cdns3: allocate TX FIFO size according to composite EP number") Signed-off-by: Frank Li Signed-off-by: Shawn Guo --- diff --git a/arch/arm64/boot/dts/freescale/imx8-ss-conn.dtsi b/arch/arm64/boot/dts/freescale/imx8-ss-conn.dtsi index 2209c1ac6e9b0..e62a43591361b 100644 --- a/arch/arm64/boot/dts/freescale/imx8-ss-conn.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8-ss-conn.dtsi @@ -171,6 +171,7 @@ conn_subsys: bus@5b000000 { interrupt-names = "host", "peripheral", "otg", "wakeup"; phys = <&usb3_phy>; phy-names = "cdns3,usb3-phy"; + cdns,on-chip-buff-size = /bits/ 16 <18>; status = "disabled"; }; };