-----Original Message----- From: Mark Brown [mailto:broonie@kernel.org] Sent: Thursday, October 10, 2013 3:29 AM To: Inki Dae Cc: Olof Johansson; Sean Paul; devicetree@vger.kernel.org; linux-samsung- soc@vger.kernel.org; linux-doc@vger.kernel.org; linux- kernel@vger.kernel.org; DRI mailing list; linux-arm- kernel@lists.infradead.org Subject: Re: [PATCH 3/5] drm/bridge: Add PTN3460 bridge driver
On Fri, Oct 04, 2013 at 11:05:48AM +0900, Inki Dae wrote:
2013/10/4 Olof Johansson olof@lixom.net:
"If PD_N is LOW, then the device is in Deep power-down completely, even if supply rail is ON; for the device to be able to operate, the PD_N pin must be HIGH."
I still think the pin could be replaced with a regulator. But lvds-bridge node has "powerdown-gpio" property - it say this board will use gpio pin - specific to board. So it seems no problem.
No, don't model things that aren't regulators as regulators - it's just confusing from a usability standpoint and causes breakage when the pins don't behave like regulators.
It seems that there was your missing point. That _is not_ what I mentioned. I mean that other boards can use a regulator instead of gpio pin.