On Fri, Jan 24, 2020 at 8:36 AM Maxime Ripard <[email protected]> wrote: > > On Tue, Jan 21, 2020 at 09:14:02PM -0600, Samuel Holland wrote: > > On 1/21/20 3:05 AM, Maxime Ripard wrote: > > > On Sun, Jan 19, 2020 at 10:30:58AM -0600, Samuel Holland wrote: > > >> The Pinebook does not use the CSI bus on the A64. In fact it does not > > >> use GPIO port E for anything at all. Thus the following regulators are > > >> not used and do not need voltages set: > > >> > > >> - ALDO1: Connected to VCC-PE only > > >> - DLDO3: Not connected > > >> - ELDO3: Not connected > > >> > > >> Signed-off-by: Samuel Holland <[email protected]> > > >> --- > > >> .../boot/dts/allwinner/sun50i-a64-pinebook.dts | 16 +--------------- > > >> 1 file changed, 1 insertion(+), 15 deletions(-) > > >> > > >> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts > > >> b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts > > >> index ff32ca1a495e..8e7ce6ad28dd 100644 > > >> --- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts > > >> +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts > > >> @@ -202,9 +202,7 @@ > > >> }; > > >> > > >> ®_aldo1 { > > >> - regulator-min-microvolt = <2800000>; > > >> - regulator-max-microvolt = <2800000>; > > >> - regulator-name = "vcc-csi"; > > >> + regulator-name = "vcc-pe"; > > >> }; > > > > > > If it's connected to PE, I'd expect the voltage to be at 3.3v? > > > > If we provide voltage constraints, the regulator core will enable the > > regulator > > and set its voltage at boot. That seems like a bit of a waste. > > I'm not sure the regulator core enables them if there's neither > regulator-boot-on nor regulator-always-on. > > > I don't think the voltage really matters, since nothing is plugged in to the > > port. ALDO1 can't go over 3.3V anyway, so even if it does get turned on for > > some > > reason, nothing will get damaged. > > Looking at the schematics, it looks like the PE pins are connected to > the front-facing camera?
The only camera on Pinebook is UVC > > Maxime > > _______________________________________________ > linux-arm-kernel mailing list > [email protected] > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/linux-sunxi/CA%2BE%3DqVf0wcds7SzLOQT5BS2fVXT5w6-e9yhTK4%3DBXBm%3D%3DP3Kzg%40mail.gmail.com.
