Hi,
I’m working on a Beagleboard-xm similar board(only some GPIO
difference),and modify uboot&kernel,the board boot-up successfully.
To debug convinently, I include
CONFIG_CMD_DHCP、CONFIG_CMD_PING、CONFIG_CMD_NET in uboot, and add mine
command to reset LAN9514…
+static int reset_hub(cmd_tbl_t *cmdtp,int flag,int argc,char * const
argv[])+{+ gpio_request(13,"reset hub");+ gpio_direction_output(13,1);+
__udelay(10000);+ gpio_direction_output(13,0);+ return 0;
+}+U_BOOT_CMD(resethub,CONFIG_SYS_MAXARGS,1,reset_hub,"reset hub","");
But, there is a problem:
When first start usb ,LAN9514 enumerate successfully. But in the second
time, LAN9514 enumerate fail.
U-Boot# usb start(Re)start USB...
USB0: USB EHCI 1.00
scanning bus 0 for devices... 3 USB Device(s) found
scanning usb for storage devices... 0 Storage Device(s) found
scanning usb for ethernet devices... 1 Ethernet Device(s) found
U-Boot# usb start(Re)start USB...
USB0: USB EHCI 1.00
scanning bus 0 for devices... 1 USB Device(s) found
scanning usb for storage devices... 0 Storage Device(s) found
scanning usb for ethernet devices... 0 Ethernet Device(s) found
I have checked USB2HS_RESET waveform and HUB_RESET waveform,they seems ok.
and I checkout USB3320 ‘s USBDM0、USBDP0 pin, nothing output when “usb start
“command, is USB3320 reset fail?
<https://lh5.googleusercontent.com/-AG7W_ZFYE08/U99EJlybmzI/AAAAAAAAAFE/eF1IDq7azs8/s1600/22222222.png>
<https://lh4.googleusercontent.com/-i_3nbvClW28/U99EF3Q9F6I/AAAAAAAAAE8/UcLPH6k3fas/s1600/1111111.png>
And my kernel can’t enumerate LAN9514 either,the dmesg say “connection is
closed”:
ehci-omap ehci-omap.0: GetStatus port:2 status 003002 0 ACK POWER OWNER
sig=se0 CSC
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