On Fri, Feb 6, 2026 at 11:33 PM Hongyang Zhao <[email protected]> wrote: > > The LT9611 HDMI bridge has two DSI input ports (Port A and Port B). > The current driver only supports Port A or dual-port (A+B) mode, but > some boards like RubikPi3 connect DSI to Port B only. > > This series adds support for using DSI Port B as the input source by > utilizing the existing ports mechanism in devicetree: > > - port@0 corresponds to LT9611 DSI Port A input > - port@1 corresponds to LT9611 DSI Port B input > > The driver detects which ports are populated and configures the hardware > accordingly. When only port@1 is present, it configures port swap > (register 0x8303 bit 6) and byte_clk source (register 0x8250 bit 3:2) > for Port B operation. > > Signed-off-by: Hongyang Zhao <[email protected]> > --- > Changes in v3: > - v2 incorporates significant changes based on Neil's review of v1, > so remove Roger’s Reviewed-by tag from the v2 commit message. > - Link to v2: > https://patch.msgid.link/[email protected] > > Changes in v2: > - Use ports mechanism instead of boolean property > - port@0 corresponds to LT9611 Port A, port@1 to Port B > - Driver detects which port is populated and configures accordingly > - Link to v1: > https://lore.kernel.org/r/[email protected] > > --- > Hongyang Zhao (3): > dt-bindings: display: lt9611: Support single Port B input > drm/bridge: lt9611: Add support for single Port B input > arm64: dts: qcom: qcs6490-rubikpi3: Use lt9611 DSI Port B > > .../bindings/display/bridge/lontium,lt9611.yaml | 15 +++++-- > .../boot/dts/qcom/qcs6490-thundercomm-rubikpi3.dts | 8 ++-- > drivers/gpu/drm/bridge/lontium-lt9611.c | 46 > +++++++++++++++------- > 3 files changed, 47 insertions(+), 22 deletions(-) > --- > base-commit: 46fe65a2c28ecf5df1a7475aba1f08ccf4c0ac1b > change-id: 20260127-rubikpi-next-20260116-99c1dbea50e4
Reviewed-by: Roger Shimizu <[email protected]> Tested-by: Roger Shimizu <[email protected]> -Roger
