On Tue, 2009-08-11 at 09:33 +0300, Felipe Balbi wrote: > Hi, > > On Mon, Aug 10, 2009 at 10:42:41PM +0200, ext Peter Barada wrote: > > Since the twl4030 thinks its got Vbus, I've added code to dump the > > TWL4030 register accesses and other structure in the twl4030-usb.c code > > to understand what its doing. So, from power up(with nothing connected), > > I see: > > > > twl4030_usb twl4030_usb: ++ twl4030_usb_ldo_init: > > twl4030_usb twl4030_usb: -- twl4030_usb_ldo_init: > > twl4030_usb twl4030_usb: ++ twl4030_usb_irq: > > twl4030_usb twl4030_usb: twl4030_readb: module 12 address 0f data 72 > > twl4030_usb twl4030_usb: HW_CONDITIONS 0x72/114; link 1 (None) > > twl4030_usb twl4030_usb: ++ twl4030_phy_suspend: controller_off 0 > > twl4030_usb twl4030_usb: -- twl4030_usb_irq: > > twl4030_usb twl4030_usb: Initialized TWL4030 USB module > > twl4030_usb twl4030_usb: twl4030_usb_write: address 0c data 20 > > > > 1) The only write is from twl4030_vbus_work to clear DRVBUS in OTG_CTRL > > since HW_CONDITION shows Vbus and ID not set. > > that's ok, so far. > > > modprobe of the driver gives > > > > OMAP-35x# modprobe musb_hdrc > > musb_hdrc: version 6.0, pio, host, debug=3 > > twl4030_usb twl4030_usb: ++ twl4030_phy_resume: > > twl4030_usb twl4030_usb: ++ twl4030_phy_power: on 1 > > twl4030_usb twl4030_usb: twl4030_readb: module 00 address fd data 01 > > twl4030_usb twl4030_usb: twl4030_i2c_write_u8_verify: module 00 address > > fd data 00 > > twl4030_usb twl4030_usb: twl4030_readb: module 00 address fe data 06 > > twl4030_usb twl4030_usb: twl4030_usb_write: address fe data 06 > > twl4030_usb twl4030_usb: -- twl4030_phy_power: > > twl4030_usb twl4030_usb: twl4030_i2c_access: on 1 > > twl4030_usb twl4030_usb: twl4030_readb: module 00 address fe data 06 > > twl4030_usb twl4030_usb: twl4030_i2c_write_u8_verify: module 00 address > > fe data 07 > > twl4030_usb twl4030_usb: twl4030_readb: module 00 address ff data 01 > > twl4030_usb twl4030_usb: twl4030_readb: module 00 address ff data 01 > > twl4030_usb twl4030_usb: -- twl4030_i2c_access: > > twl4030_usb twl4030_usb: twl4030_usb_set_mode: mode 1 > > twl4030_usb twl4030_usb: twl4030_usb_write: address 09 data 04 > > twl4030_usb twl4030_usb: twl4030_usb_write: address ad data 20 > > twl4030_usb twl4030_usb: twl4030_usb_write: address 06 data 1b > > twl4030_usb twl4030_usb: -- twl4030_usb_set_mode: > > twl4030_usb twl4030_usb: twl4030_i2c_access: on 0 > > twl4030_usb twl4030_usb: twl4030_readb: module 00 address fe data 07 > > twl4030_usb twl4030_usb: twl4030_i2c_write_u8_verify: module 00 address > > fe data 06 > > twl4030_usb twl4030_usb: -- twl4030_i2c_access: > > twl4030_usb twl4030_usb: -- twl4030_phy_resume: > > HS USB OTG: revision 0x33, sysconfig 0x2010, sysstatus 0x1, intrfsel > > 0x1, simenable 0x0 > > musb_hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine (X), bulk > > split (X), HB-ISO Rx, HB-ISO Tx, SoftConn) > > musb_hdrc: MHDRC RTL version 1.400 > > musb_hdrc: setup fifo_mode 4 > > musb_hdrc: 28/31 max ep, 16384/16384 memory > > musb_hdrc: hw_ep 0shared, max 64 > > musb_hdrc: hw_ep 1tx, max 512 > > musb_hdrc: hw_ep 1rx, max 512 > > musb_hdrc: hw_ep 2tx, max 512 > > musb_hdrc: hw_ep 2rx, max 512 > > musb_hdrc: hw_ep 3tx, max 512 > > musb_hdrc: hw_ep 3rx, max 512 > > musb_hdrc: hw_ep 4tx, max 512 > > musb_hdrc: hw_ep 4rx, max 512 > > musb_hdrc: hw_ep 5tx, max 512 > > musb_hdrc: hw_ep 5rx, max 512 > > musb_hdrc: hw_ep 6tx, max 512 > > musb_hdrc: hw_ep 6rx, max 512 > > musb_hdrc: hw_ep 7tx, max 512 > > musb_hdrc: hw_ep 7rx, max 512 > > musb_hdrc: hw_ep 8tx, max 512 > > musb_hdrc: hw_ep 8rx, max 512 > > musb_hdrc: hw_ep 9tx, max 512 > > musb_hdrc: hw_ep 9rx, max 512 > > musb_hdrc: hw_ep 10tx, max 256 > > musb_hdrc: hw_ep 10rx, max 64 > > musb_hdrc: hw_ep 11tx, max 256 > > musb_hdrc: hw_ep 11rx, max 64 > > musb_hdrc: hw_ep 12tx, max 256 > > musb_hdrc: hw_ep 12rx, max 64 > > musb_hdrc: hw_ep 13shared, max 4096 > > musb_hdrc: hw_ep 14shared, max 1024 > > musb_hdrc: hw_ep 15shared, max 1024 > > musb_hdrc: USB Host mode controller at d80ab000 using PIO, IRQ 92 > > musb_hdrc musb_hdrc: MUSB HDRC host driver > > musb_hdrc musb_hdrc: new USB bus registered, assigned bus number 1 > > usb usb1: configuration #1 chosen from 1 choice > > hub 1-0:1.0: USB hub found > > hub 1-0:1.0: 1 port detected > > musb_start 883: <== devctl 80 > > usb usb1: New USB device found, idVendor=1d6b, idProduct=0002 > > usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1 > > usb usb1: Product: MUSB HDRC host driver > > usb usb1: Manufacturer: Linux 2.6.28-rc8-omap1-05704-gf6ea2bb-dirty > > musb-hcd > > usb usb1: SerialNumber: musb_hdrc > > musb_init_controller 2057: HOST mode, status 0, devctl 81 B > > twl4030_usb twl4030_usb: ++ twl4030_usb_irq: > > twl4030_usb twl4030_usb: twl4030_readb: module 12 address 0f data f2 > > twl4030_usb twl4030_usb: HW_CONDITIONS 0xf2/242; link 2 (Vbus) > > twl4030_usb twl4030_usb: ++ twl4030_phy_resume: > > twl4030_usb twl4030_usb: -- twl4030_usb_irq: > > twl4030_usb twl4030_usb: twl4030_usb_write: address 0c data 20 > > OMAP-35x# musb_stage2_irq 812: SUSPEND (b_idle) devctl 91 power e0 > > twl4030_usb twl4030_usb: ++ twl4030_usb_irq: > > twl4030_usb twl4030_usb: twl4030_readb: module 12 address 0f data 72 > > twl4030_usb twl4030_usb: HW_CONDITIONS 0x72/114; link 1 (None) > > twl4030_usb twl4030_usb: ++ twl4030_phy_suspend: controller_off 0 > > twl4030_usb twl4030_usb: ++ twl4030_phy_power: on 0 > > twl4030_usb twl4030_usb: twl4030_usb_write: address 0c data 20 > > twl4030_usb twl4030_usb: twl4030_readb: module 00 address fd data 00 > > twl4030_usb twl4030_usb: twl4030_i2c_write_u8_verify: module 00 address > > fd data 01 > > twl4030_usb twl4030_usb: -- twl4030_phy_power: > > twl4030_usb twl4030_usb: -- twl4030_phy_suspend: > > twl4030_usb twl4030_usb: -- twl4030_usb_irq: > > > > > > As you can see, the twl4030-usb interrupt triggers and HW_CONDITIONS > > shows that Vbus is set. At this point, musb_hdrc (apparently) tries to > > talk to the device that it assumes is attached, and since nothing is out > > there, triggers the SUSPEND interrupt and then the twl4030 triggers to > > pull Vbus. > > weird you got a suspend irq. that should only come when musb sees 3 > consecutive SOFs. > > Anyways, that shouldn't harm, and that new device found is just the > roothub. Should be fine as well. > > > > 1. connect micro-a cable and see what happens and what musb tells you ? > > > > twl4030_usb twl4030_usb: ++ twl4030_usb_irq: > > twl4030_usb twl4030_usb: twl4030_readb: module 12 address 0f data 76 > > twl4030_usb twl4030_usb: HW_CONDITIONS 0x76/118; link 3 (ID) > > twl4030_usb twl4030_usb: ++ twl4030_phy_resume: > > twl4030_usb twl4030_usb: ++ twl4030_phy_power: on 1 > > twl4030_usb twl4030_usb: twl4030_usb_write: address 0b data 20 > > twl4030_usb twl4030_usb: twl4030_readb: module 00 address fd data 01 > > twl4030_usb twl4030_usb: twl4030_i2c_write_u8_verify: module 00 address > > fd data 00 > > twl4030_usb twl4030_usb: twl4030_readb: module 00 address fe data 06 > > twl4030_usb twl4030_usb: twl4030_usb_write: address fe data 06 > > twl4030_usb twl4030_usb: -- twl4030_phy_power: > > twl4030_usb twl4030_usb: ++ twl4030_i2c_access: on 1 > > twl4030_usb twl4030_usb: twl4030_readb: module 00 address fe data 06 > > twl4030_usb twl4030_usb: twl4030_i2c_write_u8_verify: module 00 address > > fe data 07 > > twl4030_usb twl4030_usb: twl4030_readb: module 00 address ff data 01 > > twl4030_usb twl4030_usb: twl4030_readb: module 00 address ff data 01 > > twl4030_usb twl4030_usb: -- twl4030_i2c_access: > > twl4030_usb twl4030_usb: ++ twl4030_usb_set_mode: mode 1 > > twl4030_usb twl4030_usb: twl4030_usb_write: address 09 data 04 > > twl4030_usb twl4030_usb: twl4030_usb_write: address ad data 20 > > twl4030_usb twl4030_usb: twl4030_usb_write: address 06 data 1b > > twl4030_usb twl4030_usb: -- twl4030_usb_set_mode: > > twl4030_usb twl4030_usb: twl4030_i2c_access: on 0 > > twl4030_usb twl4030_usb: twl4030_readb: module 00 address fe data 07 > > twl4030_usb twl4030_usb: twl4030_i2c_write_u8_verify: module 00 address > > fe data 06 > > twl4030_usb twl4030_usb: -- twl4030_i2c_access: > > twl4030_usb twl4030_usb: -- twl4030_phy_resume: > > twl4030_usb twl4030_usb: -- twl4030_usb_irq: > > but this is weird. When you connect micro-A, vbus should go on and musb > should set the session bit in the devctl register. Maybe that's what > it's missing. > > let's try some other hackish test, apply this patch and after connecting > micro-a cable do: echo 1 > /sys/devices/platform/musb_hdrc/connect Unfortunately, with the patch, and: 1) modprobe musb_hdrc 2) modprobe g_ether 3) connect micro-a cable 4) echo 1 > /sys/devices/platform/musb_hdrc/connect Nothing happens - no isr or output. -- Peter Barada <peterb@xxxxxxxxxxx> Logic Product Development, Inc. -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
