On Mon, Oct 08, 2018 at 06:06:18PM +0000, Leonard Crestez wrote: > Now that mxsfb has functional runtime_pm support we can enable power > gating for the DISPLAY power domain on imx6sx. > > Since pci-imx doesn't support runtime power gating this is still > always-on unless PCI is disabled/unused. But it's reasonable for an imx > board to not have PCI. > > The current pd_pcie is actually only for PCIE_PHY, the PCIE ip block is > actually inside the DISPLAY domain. This is handled by adding the pcie > node in both power domains, using multi-pd support. > > Series is against linux-next. The last patch needs runtime PM in all > drivers or it will cause hangs. This means Shawn should hold back on it > until the PCI and mxsfb dependencies get merged (both might take a long > time). So you can just review that patch and I will resend it later, > perhaps in another cycle. > > --- > > Changes since v1: > * Document multi-pd in imx6q-pcie bindings and add DT list > * Don't refer to "DISPLAY" as "DISPMIX" because the Reference Manual > doesn't do that. > * Link to v1: https://lore.kernel.org/patchwork/cover/994092/ > > This is independent of other imx6-pci PM patches such as this one: > * https://lore.kernel.org/patchwork/patch/996806/ > Device links are quite nice! > > Link to mxsfb thread: https://lkml.org/lkml/2018/9/26/1185 > > Leonard Crestez (4): > soc: imx: gpc: Increase GPC_CLK_MAX to 7 > dt-bindings: imx6q-pcie: Add multi-pd bindings for imx6sx > PCI: imx: Add multi-pd support > ARM: dts: imx6sx: Add DISPLAY power domain support > > .../bindings/pci/fsl,imx6q-pcie.txt | 4 +- > arch/arm/boot/dts/imx6sx.dtsi | 19 +++++++- > drivers/pci/controller/dwc/pci-imx6.c | 48 +++++++++++++++++++ > drivers/soc/imx/gpc.c | 2 +- > 4 files changed, 70 insertions(+), 3 deletions(-) As agreed with Shawn, I have applied patches 2-3 to pci/dwc for v4.21, thanks. Lorenzo
