[PATCH v4 0/2] phy: rockchip: inno-hdmi: Change TMDS rate handling to configure() ops

[Jonas Karlman]

This series adds support for using phy_validate() and phy_configure()
with this HDMI PHY as an alternative to current in-tree unused way of
using PHY bus width to configure the TMDS character rate.

The only known users that calls phy_set_bus_width() on this PHY are my
out-of-tree HDMI 2.0 patches for Rockchip RK3228/RK3328, i.e. those
originating from LibreELEC (also carried by other distros), the
downstream vendor kernel uses a different implementation that also calls
phy_set_bus_width() on this PHY.

Patch "drm/rockchip: dw_hdmi: Configure HDMI PHY in atomic_mode_set()"
that calls phy_validate() and phy_configure() on this PHY can be found
at [1].

[1] https://lore.kernel.org/dri-devel/20260510183114.1248840-10-jonas@kwiboo.se/

This series is part of a larger multi series effort to:
- phy: rockchip: inno-hdmi: Change TMDS rate handling to configure() ops [v4]
- drm/rockchip: dw_hdmi: Misc cleanup and propagate bus format [v2]
- drm: bridge: dw_hdmi: Misc enable/disable, CEC and EDID cleanup [v7]
- drm/bridge: dw-hdmi: Improve input/output bus format handling
- drm/bridge: dw-hdmi: Convert to a HDMI bridge and use of bridge connector
- drm/bridge: dw-hdmi: Add and use tmds_char_rate_valid() plat data ops
- drm/meson: hdmi: Misc cleanup and use CEC notifier helpers [v1]
- drm/rockchip: dw_hdmi: Enable YCbCr and Deep Color modes
Link to snapshot: https://github.com/Kwiboo/linux-rockchip/commits/next-20260518-rk-hdmi-v5/

Changes in v4:
- Add NULL opts check in validate()
- Only store the opts->hdmi.tmds_char_rate value for later use
- Move comments about expected consumer usage from inline to above the
  functions
Link to v3: https://lore.kernel.org/linux-phy/20260515195512.1757363-1-jonas@kwiboo.se/

Changes in v3:
- Change validate() ops to only validate tmdsclock
- Add comments about expected consumer usage
- Update commit message with a typical call chain
Link to v2: https://lore.kernel.org/linux-phy/20260510095731.1222705-1-jonas@kwiboo.se/

Changes in v2:
- Split into two patches, one that adds new ops and a second that remove
  the old and unused workaround
- Add validate() ops to validate that the TMDS rate is supported
Link to v1: https://lore.kernel.org/linux-phy/20260503172936.194003-1-jonas@kwiboo.se/

Jonas Karlman (2):
  phy: rockchip: inno-hdmi: Add configure() and validate() ops
  phy: rockchip: inno-hdmi: Remove deprecated way to configure TMDS rate

 drivers/phy/rockchip/phy-rockchip-inno-hdmi.c | 71 +++++++++++++++----
 1 file changed, 58 insertions(+), 13 deletions(-)

-- 
2.54.0