On 8/19/08, Joerg Reisenweber [EMAIL PROTECTED] wrote:
This power removal is done by U1705, and it should relyably cut power when we
disable IO_3V3 what is quite normal for shutoff.
No special kernel action required.
This is in a lot of cases a faulty assumtion.
Depending on the internal
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Somebody in the thread at some point said:
| On 8/19/08, Joerg Reisenweber [EMAIL PROTECTED] wrote:
|
| This power removal is done by U1705, and it should relyably cut power
when we
| disable IO_3V3 what is quite normal for shutoff.
| No special
On 8/20/08, Andy Green [EMAIL PROTECTED] wrote:
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Somebody in the thread at some point said:
| On 8/19/08, Joerg Reisenweber [EMAIL PROTECTED] wrote:
|
| This power removal is done by U1705, and it should relyably cut power
when we
|
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Somebody in the thread at some point said:
| On 8/20/08, Andy Green [EMAIL PROTECTED] wrote:
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| Somebody in the thread at some point said:
| | On 8/19/08, Joerg Reisenweber [EMAIL PROTECTED] wrote:
On 8/20/08, Andy Green [EMAIL PROTECTED] wrote:
So, which pins still have any high level that can feed GSM side through
protection diodes in this situation? CPU doesn't have any rail above 0V...
Sorry for herding goats.
MY understanding was we talk about
CPU up _and_ GSM down.
i.e.
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Somebody in the thread at some point said:
| So unless we're absolutely sure no GPIO can ever have a non-zero
| potential (or only through a very large impedance) while we're in
Have a look at the circuit and give some examples of signals that can
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Somebody in the thread at some point said:
| On 8/20/08, Werner Almesberger [EMAIL PROTECTED] wrote:
|
| That's why try to control as many signals to subsystems that are
| active in PMU.STANDBY as possible from PMU GPIOs. And yes, it would
| be
Andy Green wrote:
Have a look at the circuit and give some examples of signals that can be
in this condition in off state, then we can talk about it. Otherwise
it's just handwaving.
I don't have any specific problem I suspect to happen. I just wanted
to point out the general problem (which
Uwe Klein wrote:
Would reeducating the PMU help?
If you have some technology how to alter the mask-programmed default
settings we (and probably lots of others as well) would be extremely
interested ;-)
- Werner
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hardware mailing list
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Somebody in the thread at some point said:
| On 8/20/08, Andy Green [EMAIL PROTECTED] wrote:
| We have no control over PMU startup. It brings up various rails how it
| likes all at the same time at levels it likes.
| The PCF50633 ?
| I have printed
Am Mi 20. August 2008 schrieb Werner Almesberger:
I don't have any specific problem I suspect to happen. I just wanted
to point out the general problem (which seems particularly bad with
those Samsung SoCs), which seems to be important since Joerg recently
suggested to run all sorts of GPIOs
If I'm in a situation where I absolutely want to make sure we don't
emit any power, I'd remove the battery anyway.
OK, there are people who feel uncomfortable with a battery in *any*
cellphone
nearby, when they have some confidential talk ;-)
OTOH, I'm more concerned about possible
Joerg Reisenweber wrote:
HUH? Please give a pointer or quote! :-(
Phew. Instead of spending the rest of the day searching through our
archives for those old problems, let me just briefly describe what
happened:
- GTA01: while powering down (PMU.NoPower), the GPIOs would jerk,
causing
On 8/20/08, Andy Green [EMAIL PROTECTED] wrote:
Yes, but the datasheet does not have all the info. There are various
mask-programmed options on our variant I don't know are listed anywhere
externally. But the basic deal is it switches on a bunch of regulators
all at the same moment with
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Somebody in the thread at some point said:
| On 8/20/08, Andy Green [EMAIL PROTECTED] wrote:
|
| Yes, but the datasheet does not have all the info. There are various
| mask-programmed options on our variant I don't know are listed anywhere
|
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Somebody in the thread at some point said:
| Am Mi 20. August 2008 schrieb Werner Almesberger:
| Joerg Reisenweber wrote:
| HUH? Please give a pointer or quote! :-(
| Phew. Instead of spending the rest of the day searching through our
| archives for
Joerg Reisenweber wrote:
Fine! But where in this description is the point about ME suggesting sth
like routing (new) GPIO to all sorts of peripherals???
Ah, this was the mail that scared me:
https://lists.internal.openmoko.org/pipermail/gta03/2008-August/000497.html
I'm well aware about the
There are people that think all kinds of stupid stuff, we shouldn't
let
it divert us from reality.
- -Andy
If I'd read it on a wet t-shirt, I'd believe it, but as it stands,
just some dork email .. meh. I want to BELIEVE!
;
--
Jay Vaughan
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