On Thu, Dec 17, 2020 at 04:13:13PM +0100, Guido Günther wrote: > BUCK3 needs a regulator-enable-ramp-delay since otherwise the board > freezes on etnaviv probe. With this pgc_gpu suspends and resumes as > expected. This must have been always broken since gpcv2 support was > enabled. > > We also enable all the regulators needed for Deep Sleep Mode (DSM) as > always-on: > > - VDD_SOC supplied by BUCK1 > - VDDA_1P8 supplied by BUCK7 > - VDDA_0P9 supplied by LDO4 > - VDDA_DRAM supplied by LDO3 > - NVCC_DRAM supplied by BUCK8 > - VDD_DRAM supplied by BUCK5 > > Finally LDO5 and LDO6 provide VDD_PHY_1V8 and VDD_PHY_0V9 used by the > SOCs MIPI, HDMI and USB IP cores. While we would in theory be able to > turn these off (and I've tested that or LDO6 and mipi with USB disabled) > it is of little practical use atm since USB doesn't runtime suspend so > let's revisit this at a later point. > > Signed-off-by: Guido Günther <agx@xxxxxxxxxxx> > --- > .../boot/dts/freescale/imx8mq-librem5-devkit.dts | 11 +++++++++++ > 1 file changed, 11 insertions(+) > Reviewed-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx> Best regards, Krzysztof
