This allows us to shut down the mipi power domain on the imx8. The alternative
would be to drop the dphy from the mipi power domain in the SOCs device tree
and only have the DSI host controller visible there but since the PD is mostly
about the PHY that would defeat it's purpose.
This is basically a resend from February 2020 which went without feedback.
This allows to shut off the power domain hen blanking the LCD panel:
pm_genpd_summary before:
domain status slaves
/device runtime status
----------------------------------------------------------------------
mipi on
/devices/platform/soc@0/soc@0:bus@30800000/30a00300.dphy unsupported
/devices/platform/soc@0/soc@0:bus@30800000/30a00000.mipi_dsi suspended
after:
mipi off-0
/devices/platform/soc@0/soc@0:bus@30800000/30a00300.dphy suspended
/devices/platform/soc@0/soc@0:bus@30800000/30a00000.mipi_dsi suspended
Changes from v1:
- Tweak commit message slightly
Changes from v2:
- As pre review comment by Lucas Stach
https://lore.kernel.org/linux-arm-kernel/ee22b072e0abe07559a3e6a63ccf6ece064a46cb.ca...@pengutronix.de/
Check for pm_runtime_get_sync failure
Guido Günther (1):
phy: fsl-imx8-mipi-dphy: Hook into runtime pm
.../phy/freescale/phy-fsl-imx8-mipi-dphy.c | 25 ++++++++++++++++++-
1 file changed, 24 insertions(+), 1 deletion(-)
--
2.29.2
