[PATCH v4 00/11] consolidated i.MX8MP HSIO/MEDIA/HDMI blk-ctrl series

[Lucas Stach]

Hi all,

this series adds a bunch more power domains that integrate with the blk-ctrls
to the i.MX8MP. It depends on the i.MX8MP GPCv2 support series posted in [1].

The HSIO blk-ctrl bindings are already applied upstream, so they are not part
of this series anymore. The DT description hasn't changed, but the
implementation of the HSIO blk-ctrl driver is reworked quite a bit from the
last round of patches, so I've dropped the review/tested-by tags.

I've also picked up the pretty thoroughly reviewed and tested MEDIA blk-ctrl
patches from Paul and Laurent into this series, as they would conflict with
other patches from this series when applied separately. This should hopefully
make it easier for Shawn to pick things up.

Finally this now also adds the HDMI blk-ctrl, not part of any previous series.
This one is pretty complex and the documentation in the reference manual
appears to be inaccurate. I found at least the following issues:

1. GLOBAL_XTAL24M_CLK_EN does not actually gate the 24MHz reference clock,
the PHY PLL happily locks and provides correct clocks without this clock being
ungated. It seems to gate some clock input of the HDMI TX controller instead,
register access to this controller fails without this clock.

2. HDMI_RTX_RESET_CTL0 bits 6 and 7 are marked as "reserved" in the manual,
but they are actually required to be configured. Bit 6 seems to keep something
in the display pixel clock path in inactive state and Bit 7 seems to reset
the HDMI TX i2c controller.

The HDMI blk-ctrl part is tested quite extensively with a PoC HDMI support
patchset, which I will send out in a bit, so I'm pretty sure that the
support as implemented is working. I've put the patches last in the series
in case that this turns out to be controversial, so the other patches can
be applied independent from the HDMI support.

Regards,
Lucas

[1] https://lore.kernel.org/all/20220330104620.3600159-1-l.stach@pengutronix.de/


Laurent Pinchart (1):
  arm64: dts: imx8mp: Add MEDIAMIX power domains

Lucas Stach (7):
  soc: imx: imx8m-blk-ctrl: set power device name
  soc: imx: add i.MX8MP HSIO blk-ctrl
  dt-bindings: power: imx8mp: add defines for HDMI blk-ctrl domains
  dt-bindings: soc: add binding for i.MX8MP HDMI blk-ctrl
  soc: imx: add i.MX8MP HDMI blk-ctrl
  arm64: dts: imx8mp: add HSIO power-domains
  arm64: dts: imx8mp: add HDMI power-domains

Paul Elder (3):
  dt-bindings: soc: Add i.MX8MP media block control DT bindings
  soc: imx: imx8m-blk-ctrl: Add i.MX8MP media blk-ctrl
  arm64: dts: imx8mp: Add MEDIA_BLK_CTRL

 .../soc/imx/fsl,imx8mp-hdmi-blk-ctrl.yaml     |  84 +++
 .../soc/imx/fsl,imx8mp-media-blk-ctrl.yaml    | 104 +++
 arch/arm64/boot/dts/freescale/imx8mp.dtsi     | 153 +++-
 drivers/soc/imx/Makefile                      |   1 +
 drivers/soc/imx/imx8m-blk-ctrl.c              | 124 +++-
 drivers/soc/imx/imx8mp-blk-ctrl.c             | 696 ++++++++++++++++++
 include/dt-bindings/power/imx8mp-power.h      |  18 +
 7 files changed, 1172 insertions(+), 8 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/soc/imx/fsl,imx8mp-hdmi-blk-ctrl.yaml
 create mode 100644 Documentation/devicetree/bindings/soc/imx/fsl,imx8mp-media-blk-ctrl.yaml
 create mode 100644 drivers/soc/imx/imx8mp-blk-ctrl.c

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2.30.2