Power Management - wall comments

[admin]

The focus of this group is power management, which covers issues for power, clocks, timers and buses, including connections to and control of PMICs.  The group’s focus covers these issues for all i.MX devices and OS’s.

[i_Mx53]

Hi,

I am using this i.mx53 sabre tablet.

I am working on power mangement of this board.

How can i get the power button informatin in linux-2.6.35.I want to know about the power button status.

So that if we press  the power button it has to go into sleep mode and again press it has to resume.

These things how can i monitor form the linux.

Thanks,

Nag

[JessBrown]

You could try one of Wolfson's PMICs, The WM831x and WM832x should support the i.MX25 processor

[andrew_questps]

We haven't seen that problem, but we had to remove the MC34704 from our design as it was drawing 50mA while the rest of the system was asleep! We also managed to blow a couple of the power supplies up through regular use, no shorts etc, maybe they were getting too hot?

[Jim_Carlson]

I have a customer using the MC34704 with the i.MX25.  When the system is heated in an oven to >70°C, and then power is applied, the MC34704 will NOT power up.  When the system is cooled and power is applied, it runs normally even when heated back to >70°C.

Has anyone seens this problem?

Thank you!