27 Jun
2010
27 Jun
'10
10:55 p.m.
On 27 Jun 2010, at 11:43, Vasily Khoruzhick wrote:
В сообщении от 27 июня 2010 13:10:54 автор Mark Brown написал:
Old drivers for fairly obscure chips aren't always a good guide to best practices for things.
Ok, what driver should I use as reference?
Off the top of my head WM8904 does regulator based power management.
It's softreset and it's performed by writing some value to some reg. i2c xfers is not possible when codec is not enabled (it is not at this point)
It needs to happen at some point.
Softreset is performed right after codec power on, it can't be performed earlier.
After power on it's not needed, the device should be in the default state already. It's only required on startup when there's no power control for the device.