On Tue, Jul 30, 2024 at 05:01:31PM +0200, Marc Gonzalez wrote: > TDP158 is an AC-coupled DVI / HDMI to TMDS level shifting Redriver. > It supports DVI 1.0, HDMI 1.4b and 2.0b. > It supports 4 TMDS channels, HPD, and a DDC interface. > It supports dual power supply rails (1.1V on VDD, 3.3V on VCC) > for power reduction. Several methods of power management are > implemented to reduce overall power consumption. > It supports fixed receiver EQ gain using I2C or pin strap to > compensate for different lengths input cable or board traces. > > Features > > - AC-coupled TMDS or DisplayPort dual-mode physical layer input > to HDMI 2.0b TMDS physical layer output supporting up to 6Gbps > data rate, compatible with HDMI 2.0b electrical parameters > - DisplayPort dual-mode standard version 1.1 > - Programmable fixed receiver equalizer up to 15.5dB > - Global or independent high speed lane control, pre-emphasis > and transmit swing, and slew rate control > - I2C or pin strap programmable > - Configurable as a DisplayPort redriver through I2C > - Full lane swap on main lanes > - Low power consumption (200 mW at 6Gbps, 8 mW in shutdown) > > https://www.ti.com/lit/ds/symlink/tdp158.pdf > > Like the TFP410, the TDP158 can be set up in 2 different ways: > 1) hard-coding its configuration settings using pin-strapping resistors > 2) placing it on an I2C bus, and defer set-up until run-time > > The mode is selected via pin 8 = I2C_EN > I2C_EN high = I2C Control Mode > I2C_EN low = Pin Strap Mode > > On our board, I2C_EN is pulled high. > > Signed-off-by: Marc Gonzalez <mgonzalez@xxxxxxxxxx> > --- > .../bindings/display/bridge/ti,tdp158.yaml | 57 ++++++++++++++++++++++ > 1 file changed, 57 insertions(+) > > diff --git a/Documentation/devicetree/bindings/display/bridge/ti,tdp158.yaml b/Documentation/devicetree/bindings/display/bridge/ti,tdp158.yaml > new file mode 100644 > index 0000000000000..fe3de1534efc1 > --- /dev/null > +++ b/Documentation/devicetree/bindings/display/bridge/ti,tdp158.yaml > @@ -0,0 +1,57 @@ > +# SPDX-License-Identifier: GPL-2.0-only For new bindings: GPL-2.0-only OR BSD-2-Clause With that, Reviewed-by: Rob Herring (Arm) <robh@xxxxxxxxxx>
