diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/lib/usbdebug.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/lib/usbdebug.c b/src/lib/usbdebug.c index 53ba4db53c..a9a7e17597 100644 --- a/src/lib/usbdebug.c +++ b/src/lib/usbdebug.c @@ -448,6 +448,23 @@ try_next_port: return -1; } + /* Wait until the controller is halted */ + status = read32((unsigned long)&ehci_regs->status); + if (!(status & STS_HALT)) { + cmd = read32((unsigned long)&ehci_regs->command); + cmd &= ~CMD_RUN; + write32((unsigned long)&ehci_regs->command, cmd); + loop = 100; + do { + dbgp_mdelay(10); + status = read32((unsigned long)&ehci_regs->status); + } while (!(status & STS_HALT) && (--loop > 0)); + if (status & STS_HALT) + dprintk(BIOS_INFO, "EHCI controller halted successfully.\n"); + else + dprintk(BIOS_INFO, "EHCI controller is not halted. Reset may fail.\n"); + } + loop = 100; /* Reset the EHCI controller */ cmd = read32((unsigned long)&ehci_regs->command); |