Hi Tim,
On Thu, Apr 27, 2023 at 2:52 PM Tim Harvey tharvey@gateworks.com wrote:
Fabio,
The original issue I was trying to solve should not be visible on imx8mm-evk unless you changed its usbotg1 to dr_mode = "host" in which case you should see a hang with a simple 'usb start && usb stop'.
Just did the following change as you suggested:
diff --git a/arch/arm/dts/imx8mm-evk.dtsi b/arch/arm/dts/imx8mm-evk.dtsi index 7d6317d95b13..0be3ab66ed5f 100644 --- a/arch/arm/dts/imx8mm-evk.dtsi +++ b/arch/arm/dts/imx8mm-evk.dtsi @@ -400,7 +400,7 @@ };
&usbotg1 { - dr_mode = "otg"; + dr_mode = "host"; hnp-disable; srp-disable; adp-disable; diff --git a/configs/imx8mm_evk_defconfig b/configs/imx8mm_evk_defconfig index ab9ad41b4548..70c7a21f2d9f 100644 --- a/configs/imx8mm_evk_defconfig +++ b/configs/imx8mm_evk_defconfig @@ -119,3 +119,4 @@ CONFIG_CI_UDC=y CONFIG_SDP_LOADADDR=0x40400000 CONFIG_USB_GADGET_DOWNLOAD=y CONFIG_IMX_WATCHDOG=y +CONFIG_CMD_USB=y
Tested against my series that syncs imx8mm with Linux 6.3:
u-boot=> usb start && usb stop starting USB... Bus usb@32e40000: USB EHCI 1.00 scanning bus usb@32e40000 for devices... 1 USB Device(s) found stopping USB.. u-boot=>
No hang is observed.