Re: PROBLEM: bindings for drivers/mfd/twl4030-power.c

From: Tony Lindgren
Date: Mon Aug 25 2014 - 17:27:04 EST

* Dr. H. Nikolaus Schaller <hns@xxxxxxxxxxxxx> [140817 08:46]:
> I am trying to make ti,use_poweroff work on 3.17-rc1 for the GTA04 board.
> Poweroff was broken for a while and I found that the driver isn't loaded at all.
> It appears to me that commit e7cd1d1eb16fcdf53001b926187a82f1f3e1a7e6
> did rename the compatible entry from "ti,twl4030-power" to "ti,twl4030-power-reset"
> but this was not documented in the bindings and of course our DT does not
> match.
> Even your commit message talks about "ti,twl4030-power" although I can't find it
> in the code.

Hmm sorry did I accidentally remove ti,twl4030-power? If so, that should
be added back for sure. Do you have a patch for that already?

> Are "ti,twl4030-power" and "ti,twl4030-power-reset" doing the same?

No, they are separate where ti,twl4030-power does not configure the
twl4030 in any way where ti,twl4030-power-reset configures the warm
reset sequence.

For gta04, what you really want is to use ti,twl4030-power-idle or
even ti,twl4030-power-idle-osc-off if the board is wired to support
cutting off the oscillator.

And you probably also want to configure some wake-up interrupts at least
for the the UARTs in the board specific .dts file, see for example the
UART3 in the existing board files that have:

interrupts-extended = <&intc 74 &omap3_pmx_core OMAP3_UART3_RX>;


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