On Wed, Dec 15, 2010 at 01:09:42PM +0000, Tomasz Mloduchowski wrote:
On 12/15/10 12:39, Felipe Balbi wrote:
On Wed, Dec 15, 2010 at 12:27:10PM +0000, Tomasz Mloduchowski wrote:
I would gladly welcome any pointers that could help me solve this
issue.
you're connecting a FS/LS device to EHCI port, that doesn't work. OMAP
can't handle port handoff to companion OHCI controller, then it fails
not being able to enumerate the device. Try remuxing your port to OHCI
controller and disabling EHCI from Kconfig.
It actually is a HS device (it's a 4-port hub) - when booting the
vendor supplied kernel (based off 2.6.32, i.e. pre -IR redesign), the
device identifies as follows:
Bus 001 Device 002: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB
with the following boot messages:
usb 1-2: new high speed USB device using ehci-omap and address 2
usb 1-2: New USB device found, idVendor=05e3, idProduct=0608
usb 1-2: New USB device strings: Mfr=0, Product=1, SerialNumber=0
usb 1-2: Product: USB2.0 Hub
hub 1-2:1.0: USB hub found
hub 1-2:1.0: 4 ports detected
I've pasted the boot log for my kernel:
http://pastie.org/1379102
And the boot log for the original kernel:
http://pastie.org/1379100
It could be a bug on the reset sequence on ehci-omap.c, do you have
anything connected to any of the hub ports ?
Please enable CONFIG_USB_DEBUG on your kernel config and grab a bit more
information.
Also, boot the machine without the device attached and after booting
run:
# dmesg -c
then attach the device, then grab the output of dmesg.
I don't have the ability to disconnect the hub - it's integrated on
the board :(
I see.
I've also made a mistake describing the pastebins - the working, PSP
kernel boot log is here:
http://pastie.org/1379102
while the non-working git kernel messages are here (with CONFIG_USB_DEBUG):
http://pastie.org/1379100
I'm quoting a snippet below for commenting.
[ 1.639892] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 1.646759] ehci_hcd: block sizes: qh 60 qtd 96 itd 160 sitd 96
[ 1.646881] ehci-omap ehci-omap.0: failed to get ehci port1 regulator
This is alarming. Please add this patch to get the error code:
diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c
index 116ae28..5da3fa3 100644
--- a/drivers/usb/host/ehci-omap.c
+++ b/drivers/usb/host/ehci-omap.c
@@ -682,7 +682,8 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev)
if (IS_ERR(omap->regulator[i])) {
omap->regulator[i] = NULL;
dev_dbg(&pdev->dev,
- "failed to get ehci port%d regulator\n", i);
+ "failed to get ehci port%d regulator --> %d\n", i,
+ PTR_ERR(omap->regulator[i]));
} else {
regulator_enable(omap->regulator[i]);
}
[ 1.646911] ehci-omap ehci-omap.0: starting TI EHCI USB Controller
[ 1.647064] ehci-omap ehci-omap.0: OMAP UHH_REVISION 0x10
[ 1.647094] ehci-omap ehci-omap.0: TLL RESET DONE
[ 1.647094] ehci-omap ehci-omap.0: OMAP3 ES version > ES2.1
[ 1.647125] ehci-omap ehci-omap.0: UHH setup done, uhh_hostconfig=21c
[ 2.649841] ehci-omap ehci-omap.0: phy reset operation timed out
This is also alarming... Let's increase the timeout just for a debugging
purpose:
diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c
index 116ae28..fa8bff0 100644
--- a/drivers/usb/host/ehci-omap.c
+++ b/drivers/usb/host/ehci-omap.c
@@ -239,7 +239,7 @@ static void omap_usb_utmi_init(struct ehci_hcd_omap *omap, u8 tll_channel_mask)
static void omap_ehci_soft_phy_reset(struct ehci_hcd_omap *omap, u8 port)
{
- unsigned long timeout = jiffies + msecs_to_jiffies(1000);
+ unsigned long timeout = jiffies + msecs_to_jiffies(10000);
unsigned reg = 0;
reg = ULPI_FUNC_CTRL_RESET
beware, this might slow your boot time quite a lot :-p
The rest is just continuing the enumeration and there's not much
interesting there besides the "unable to enumerate" message, which could
be caused by the two problems above.
--
balbi
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