On Thursday 28 November 2013 02:58 PM, Peter Ujfalusi wrote:
Since in DT booted kernel dummy regulators are no longer supported we need
to provide valid phandle for the regulator needed by the backlight.
On the board VBAT is used to power the LCD backlight(s).
Signed-off-by: Peter Ujfalusi<peter.ujfalusi@xxxxxx>
---
Hi,
This patch is needed for 3.13 to get the LCD backlight to work again.
Is this usage of power supply a mandatory requirement?
There is a thread which discusses this issue[1]:
http://www.spinics.net/lists/arm-kernel/msg288215.html
According to the above, regulator framework have support in 3.13-rc1 to
returns
a dummy regulator if there is none specified in the dts data.
Thierry told that there seems to be a bug in regulator in handling these
case.
Though, I also posted a patch on pwm a couple of days ago[2]
[2]: https://patchwork.kernel.org/patch/3246711/
I posted it without "power-supply" by testing it with the
solution proposed in [1].
If I dont use the solution[1], it fails for me also.
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