I recompiled the kernel with the original settings and made sure that the USB HDC are on. Then I did the echo F command: [root@OMAP3EVM /]#echo F > /proc/driver/musb_hdrc musb_stage0_irq 459: <== Power=f0, DevCtl=80, bIntrUSB=0x80 musb_stage0_irq 593: OTG STATE: B_idle musb_stage0_irq 595: OTG STATE: A_idle musb_stage0_irq 636: VBUS_ERROR in b_idle (80, <SessEnd), retry #3, port1 00080108 omap_set_vbus 97: VBUS b_idle, devctl 80 The code mentionned that non-repeating VBUS_ERROR could be ignored thus, afterward, I did these tests with the mini-AB: USB mouse: no power. USB hub: no power. Self-powered USB hub: no detection Self-powered DVD reader: no detection Again, please let me know what else is missing. Robert -----Original Message----- From: Pandita, Vikram [mailto:vikram.pandita@xxxxxx] Sent: February 29, 2008 12:15 PM To: Le Van Mao, Robert Cc: linux-omap@xxxxxxxxxxxxxxx Subject: RE: OMAP 3430 and ISP1504A USB support Robert >Sent: Friday, February 29, 2008 10:17 PM > >I have tested USB OTG port for Mass storage on EVM. All I do is to compile the kernel with default >config and on prompt, > ># echo S > /proc/driver/musb_hdrc The option changed some time back and now it is: echo F > /proc/driver/musb_hdrc > >For few devices I have noticed some issues, I connected an externally powered hub to the board and >connected my device (a USB stick) to hub. This works with out any issue. > >Regards, >Khasim > > > >Nryvnyʙjzjvjz ��.n��������+%������w��{.n�����{�������ܨ}���Ơz�j:+v�����w����ޙ��&�)ߡ�a����z�ޗ���ݢj��w�f