Messages in this thread Patch in this message | | | From | Frank Li <> | Subject | [PATCH 1/1] arm64: dts: imx8: fix USB 3.0 Gadget Failure in QM & QXPB0 at super speed | Date | Thu, 13 Apr 2023 11:50:43 -0400 |
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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.
Fixes: dce49449e04ff ("usb: cdns3: allocate TX FIFO size according to composite EP number")
Signed-off-by: Frank Li <Frank.Li@nxp.com> --- arch/arm64/boot/dts/freescale/imx8-ss-conn.dtsi | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/arm64/boot/dts/freescale/imx8-ss-conn.dtsi b/arch/arm64/boot/dts/freescale/imx8-ss-conn.dtsi index b32c2e199c160..030c273c8be40 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 @@ usbotg3_cdns3: usb@5b120000 { interrupt-names = "host", "peripheral", "otg", "wakeup"; phys = <&usb3_phy>; phy-names = "cdns3,usb3-phy"; + cdns,on-chip-buff-size = /bits/ 16 <18>; status = "disabled"; }; }; -- 2.34.1
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