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help with USB on mpc8313e

DISCUSSION Suvidh Kankariya 2 participants 3 messages May 23, 2008

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Suvidh Kankariya

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Hi,
I am trying to use the mpc8313e internal usb phy with internal oscillator frequency of 24 Mz. in host mode on a custom board. Whenever I plugin any low/fast speed device the device gets detected but then always get an error
"cannot read descriptor 64 error 71".Also I get address error after that .

Can somebody point me what this error can be related to ?Can it be a problem with ehci drivers or some configuration. (I get a valid clock bit set in the status register).

Also can someone point me how I include support for mmc on spi. I am using kernel 2.6.20 that comes along with mpc8313e bsp.

Any pointers are highly appreciable.

Thanks in advance
Regards

Suvidh

#1 lore raw
Quoted 10 lines · Suvidh Kankariya

Hi,
I am trying to use the mpc8313e internal usb phy with internal oscillator frequency of 24 Mz. in host mode on a custom board. Whenever I plugin any low/fast speed device the device gets detected but then always get an error
"cannot read descriptor 64 error 71".Also I get address error after that .

Can somebody point me what this error can be related to ?Can it be a problem with ehci drivers or some configuration. (I get a valid clock bit set in the status register).

This reminds me: http://patchwork.ozlabs.org/linuxppc/patch?id=17782
Was getting exactly same symptoms.

Try similar changes, should help.

Quoted 9 lines

Also can someone point me how I include support for mmc on spi. I am using kernel 2.6.20 that comes along with mpc8313e bsp.

Any pointers are highly appreciable.

Thanks in advance
Regards

Suvidh

Signature · 3 lines
Anton Vorontsov
email: [email protected]
irc://irc.freenode.net/bd2
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#2 lore raw

Thanks Anton,
With the kernel version 2.6.20 I am using Majority of this changes are hard code values in mpc8313.c I did already changed this value for my custom board file.
But I am getting the error irrespectively.

Is the relatonship description between USB DR clk and other as mentioned in your thread is documented in the manual . I could not find it atleast in mpc8313e user manual.

Regards

Suvidh

Quoted 27 lines · Anton Vorontsov
Quoted 7 lines · Suvidh Kankariya

Hi,
I am trying to use the mpc8313e internal usb phy with internal oscillator frequency of 24 Mz. in host mode on a custom board. Whenever I plugin any low/fast speed device the device gets detected but then always get an error
"cannot read descriptor 64 error 71".Also I get address error after that .

Can somebody point me what this error can be related to ?Can it be a problem with ehci drivers or some configuration. (I get a valid clock bit set in the status register).

This reminds me: http://patchwork.ozlabs.org/linuxppc/patch?id=17782
Was getting exactly same symptoms.

Try similar changes, should help.

Quoted 9 lines

Also can someone point me how I include support for mmc on spi. I am using kernel 2.6.20 that comes along with mpc8313e bsp.

Any pointers are highly appreciable.

Thanks in advance
Regards

Suvidh