Dear All:
I found that if I don't plug the USB (include D+ and D- data) , the PMU
setting will not change in U-Boot.
I remove U4905 and short the U4905( RT9711)'s VIN and VOUT. I set U4904
(AAT1275) to output 5V.
I set MBCC7 =3 (suspend) and MBCC8 = 0, the total current doesn't
still increase
Therefore, using 0 ohm resistor replace U4905 is maybe a solution.
Best wish
Allen Chang
Allen Chang 提到:
forward~
------------------------------------------------------------------------
主旨:
Re: [gta02] Fwd: PS: high rate of broken devices even on prodction
test. DESIGN BUG!
寄件者:
Allen Chang <[EMAIL PROTECTED]>
日期:
Thu, 17 Apr 2008 11:39:47 +0800
收件者 (To):
Werner Almesberger <[EMAIL PROTECTED]>
收件者 (To):
Werner Almesberger <[EMAIL PROTECTED]>
副本 (CC):
GTA02 <[EMAIL PROTECTED]>
Hi Werner:
I set the MBCC7=3 (suspend) and MBCC8=0. I found the USB doesn't
supply any current for GTA02.
But I plug the USB power into GTA02, the PMU will change it's register
status. The MBCC will change back "1".
Can someone give me a SW which the MBCC always is "3"?
Therefore, I can make the DC-DC output 5V and found what happen?
Best Wish
Allen Chang
Werner Almesberger 提到:
Wolfgang Spraul wrote:
o- either set max allowable USB current of PCF50633 to 0mA when in
hostmode,
That should work if we choose "suspend" in MBCC7.usbdevstat and set
MBCC8.usbenasus = 0
See also Figure 38 and Table 103.
Need verification, though. The PMU is complex enough for surprises ;-)
- Werner
_______________________________________________
gta02 mailing list
[EMAIL PROTECTED]
https://lists.internal.openmoko.org/mailman/listinfo/gta02
_______________________________________________
gta02 mailing list
[EMAIL PROTECTED]
https://lists.internal.openmoko.org/mailman/listinfo/gta02
begin:vcard
fn:Allen Chang
n:Chang;Allen
org:FIC;MC
email;internet:[EMAIL PROTECTED]
title:Engineer
tel;work:(02)8751-8751 #6171
version:2.1
end:vcard
