Hi,
I am working on Linux-2.6.29.5 on an MPC8360E, trying to make the FHCI USB
working.
the output of clocks in u-boot is as follows:
> Output of u-boot clocks command <
Clock configuration:
Core: 533.333 MHz
Coherent System Bus: 266.667 MHz
QE: 400 MHz
BRG: 200 MHz
Local Bus Controller:266.667 MHz
Local Bus: 66.667 MHz
DDR: 266.667 MHz
DDR Secondary: 266.667 MHz
SEC: 88.889 MHz
I2C1: 266.667 MHz
I2C2: 266.667 MHz
rcm1:~# cat /proc/cpuinfo
processor : 0
cpu : e300c1
clock : 533.333328MHz
revision : 3.1 (pvr 8083 0031)
bogomips : 133.12
timebase : 66666666
platform : MPC836x
model : RC8360
Memory : 512 MB
In the dts, because our cpu_clk and csb_clk is the same as mpc8360_rdk eval
platfrom (533.333 MHz and 266.666 MHZ)
I modeled the gtm frame limit timer the same as mpc836x_rdk.dts, namely as
follows:
ti...@440 {
compatible = "fsl,mpc8360-qe-gtm",
"fsl,qe-gtm", "fsl,gtm";
reg = <0x440 0x40>;
interrupts = <12 13 14 15>;
interrupt-parent = <&qeic>;
clock-frequency = <166666666>; /* RDK at 533.333 MHz */
/* clock-frequency = <132000000>; [DISABLED] MDS at 528 MHz */
};
In the fhci-hdc.c code, the timer is used as the "Frame limit timer"
I am wondering how is the clock-frequency = <166666666> derived and what its
function is for the fhci-usb driver?
Also, using the timer settings as shown, so far I can only got one USB flash
mass-storage device to come up successfully.
The rest of the device will enumerate, but fails like this:
usb 1-1: new full speed USB device using fsl,usb-fhci and address 2
usb 1-1: New USB device found, idVendor=0204, idProduct=6025
usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-1: Product: Flash Disk
usb 1-1: Manufacturer: CBM
usb 1-1: SerialNumber: 2519130247661913
usb 1-1: configuration #1 chosen from 1 choice
scsi1 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 2
usb-storage: waiting for device to settle before scanning
usb 1-1: reset full speed USB device using fsl,usb-fhci and address 2
usb 1-1: device descriptor read/64, error -110
usb 1-1: device descriptor read/64, error -110
usb 1-1: USB disconnect, address 2
usb-storage: device scan complete
usb 1-1: new full speed USB device using fsl,usb-fhci and address 3
usb 1-1: device descriptor read/64, error -110
usb 1-1: device descriptor read/64, error -110
hub 1-0:1.0: unable to enumerate USB device on port 1
usb 1-1: new full speed USB device using fsl,usb-fhci and address 5
usb 1-1: device descriptor read/64, error -110
usb 1-1: device descriptor read/64, error -110
From web-search, the resolution for the usb 1-1: device descriptor read/64,
error -110 is usually to modprobe -r ehci-hdc,
however I never enabled ehci driver because the fhci is the only one that works
with MPC8360.
If it is indeed a timeout from getting the device information from the flash
chip on the USB mass-storage, how can I extend this
timeout to allow for more time?
This is the relevant dmesg output on usb:
=========================================
fsl,usb-fhci e01006c0.usb: assuming board doesn't have speed gpio
fsl,usb-fhci e01006c0.usb: assuming board doesn't have power gpio
fsl,usb-fhci e01006c0.usb: at 0xe10386c0, irq 25
fsl,usb-fhci e01006c0.usb: FHCI HOST Controller
fsl,usb-fhci e01006c0.usb: new USB bus registered, assigned bus number 1
fsl,usb-fhci e01006c0.usb: irq 25, io mem 0x00000000
usb usb1: New USB device found, idVendor=1d6b, idProduct=0001
usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
usb usb1: Product: FHCI HOST Controller
usb usb1: Manufacturer: Linux 2.6.29.5-dirty fsl,usb-fhci
usb usb1: SerialNumber: e01006c0.usb
usb usb1: configuration #1 chosen from 1 choice
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 1 port detected
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
...
usb 1-1: new full speed USB device using fsl,usb-fhci and address 2
usb 1-1: New USB device found, idVendor=0204, idProduct=6025
usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-1: Product: Flash Disk
usb 1-1: Manufacturer: CBM
usb 1-1: SerialNumber: 2519130247661913
usb 1-1: configuration #1 chosen from 1 choice
scsi1 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 2
usb-storage: waiting for device to settle before scanning
usb 1-1: reset full speed USB device using fsl,usb-fhci and address 2
usb 1-1: device descriptor read/64, error -110
usb 1-1: device descriptor read/64, error -110
usb 1-1: USB disconnect, address 2
usb-storage: device scan complete
usb 1-1: new full speed USB device using fsl,usb-fhci and address 3
usb 1-1: device descriptor read/64, error -110
usb 1-1: device descriptor read/64, error -110
hub 1-0:1.0: unable to enumerate USB device on port 1
usb 1-1: new full speed USB device using fsl,usb-fhci and address 5
usb 1-1: device descriptor read/64, error -110
usb 1-1: device descriptor read/64, error -110
Thanks for everyone's time
- Richard Retanubun
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