On Mon, Sep 22, 2025 at 02:18:45PM +0200, Mike Looijmans wrote: > The tmds181 and sn65dp159 are "retimers" and hence can be considered > HDMI-to-HDMI bridges. Typical usage is to convert the output of an > FPGA into a valid HDMI signal, and it will typically be inserted > between an encoder and hdmi-connector. > > Signed-off-by: Mike Looijmans <[email protected]> > --- > > Changes in v6: > Add DRM_DISPLAY_HDMI_HELPER to Kconfig > Change "ti,mode" to "ti,retimer-mode" > > Changes in v5: > Really added vcc/vdd regulator support > "oe" gpio is now "reset" (reversed logic) > devicetree enums ti,equalizer and ti,mode > Always disable HDMI_SEL (formerly "dvi-mode") > > Changes in v4: > dev_err_probe, this_module, of_match_ptr > Use fallback compatible > Add vcc-supply and vdd-supply > > Changes in v3: > Lower-case hex values and use defines for EYESCAN registers > Remove equalizer code (unlikely to be used) > Remove attributes (no longer useful, undocumented) > Fix build for 6.17 kernel > Use devm_drm_bridge_alloc > Sort includes and add linux/bitfield.h > Check chip type and complain on mismatch > > Changes in v2: > Use atomic_enable/disable > Use #defines for bit fields in registers > Allow HDMI 2 compliance > Filter modes on clock range > Use cross-over pixel frequency instead of manual overides > Devicetree bindings according to standards > > drivers/gpu/drm/bridge/Kconfig | 12 + > drivers/gpu/drm/bridge/Makefile | 1 + > drivers/gpu/drm/bridge/ti-tmds181.c | 427 ++++++++++++++++++++++++++++ > 3 files changed, 440 insertions(+) > create mode 100644 drivers/gpu/drm/bridge/ti-tmds181.c > > diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig > index b9e0ca85226a..d679180b05b1 100644 > --- a/drivers/gpu/drm/bridge/Kconfig > +++ b/drivers/gpu/drm/bridge/Kconfig > @@ -430,6 +430,18 @@ config DRM_TI_SN65DSI86 > help > Texas Instruments SN65DSI86 DSI to eDP Bridge driver > > +config DRM_TI_TMDS181 > + tristate "TI TMDS181 and SN65DP159 HDMI retimer bridge driver" > + depends on OF > + select DRM_KMS_HELPER
Do you need it here? > + select DRM_DISPLAY_HDMI_HELPER missing select DRM_DISPLAY_HELPER > + select REGMAP_I2C > + help > + Enable this to support the TI TMDS181 and SN65DP159 HDMI retimers. > + The SN65DP159 provides output into a cable (source) whereas the > + TMDS181 is meant to forward a cable signal into a PCB (sink). Either > + can be set up as source or sink though. > + > config DRM_TI_TPD12S015 > tristate "TI TPD12S015 HDMI level shifter and ESD protection" > depends on OF -- With best wishes Dmitry
