On Fri, Oct 1, 2010 at 2:31 PM, Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > On Fri, Oct 01, 2010 at 01:23:25PM +0900, Chanwoo Choi wrote: > >> Additionally, I explain the constraints of the regulator of WM8994 codec. >> All these consumer supply of WM8994 codec connected the regulator(VCC_1.8V) >> on a circuit diagram. "VCC_1.8V" regulator is always enabled, because it is >> used to many devices on Goni/Aquila board. This is required especially > > It would be nicer to connect this to the regulator on the PMIC (I'm > assuming there is one), even if it is always enabled. That said, is the > PMIC on these boards supported by Linux yet? FYI: now wm8994 codec is connected to I/O power directly. and there's no connection with PMIC. Maybe you mean the I/O power LDO and use it. but it's always on in case of s5pc110. and can't turn off the this LDO on max8998 except the sleep. Thank you, Kyungmin Park > >> when there are many devices physically attached to "VCC_1.8V" and some of >> they did not "register" as consumers to "VCC_1.8V". "VCC_1.8V" might be >> turned off by those who are registered while "unregistered" are still active > > You can set the always_on flag in the regulator constraints to prevent > this happening - if that flag is set the supply will be kept active even > if all consumers are disabled. > -- > To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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