[PATCH 4/4] arm64: dts: imx8mp: Add hdmi parallel audio interface node

[Shengjiu Wang]

On Sat, Jul 19, 2025 at 12:30 AM Frank Li <Frank.li at nxp.com> wrote:
>
> On Fri, Jul 18, 2025 at 06:11:50PM +0800, Shengjiu Wang wrote:
> > The HDMI TX Parallel Audio Interface (HTX_PAI) is a digital module that
> > acts as the bridge between the Audio Subsystem to the HDMI TX Controller.
>
> Remove " a digital module that acts as the" is more straightforward.
>
> >
> > Correct the register map of hdmi_pvi, which is overlapped with the
> > hdmi_pai device.
>
> Shrink register map size of hdmi_pvi to avoid overlapped hdmi_pai device.

Ok, will update them in next version.
>
> >
> > Signed-off-by: Shengjiu Wang <shengjiu.wang at nxp.com>
> > ---
> >  arch/arm64/boot/dts/freescale/imx8mp-evk.dts |  4 +++
> >  arch/arm64/boot/dts/freescale/imx8mp.dtsi    | 26 +++++++++++++++++++-
> >  2 files changed, 29 insertions(+), 1 deletion(-)
> >
> > diff --git a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
> > index c0cc5611048e..cc9351a5bd65 100644
> > --- a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
> > +++ b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
> > @@ -442,6 +442,10 @@ &flexcan2 {
> >       status = "disabled";/* can2 pin conflict with pdm */
> >  };
> >
> > +&hdmi_pai {
> > +     status = "okay";
> > +};
> > +
> >  &hdmi_pvi {
> >       status = "okay";
> >  };
> > diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> > index bb24dba7338e..6e5a41f46309 100644
> > --- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> > +++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> > @@ -2063,7 +2063,7 @@ irqsteer_hdmi: interrupt-controller at 32fc2000 {
> >
> >                       hdmi_pvi: display-bridge at 32fc4000 {
> >                               compatible = "fsl,imx8mp-hdmi-pvi";
> > -                             reg = <0x32fc4000 0x1000>;
> > +                             reg = <0x32fc4000 0x800>;
> >                               interrupt-parent = <&irqsteer_hdmi>;
> >                               interrupts = <12>;
> >                               power-domains = <&hdmi_blk_ctrl IMX8MP_HDMIBLK_PD_PVI>;
> > @@ -2089,6 +2089,22 @@ pvi_to_hdmi_tx: endpoint {
> >                               };
> >                       };
> >
> > +                     hdmi_pai: hdmi at 32fc4800 {
>
> commit message it is bridge device, maybe audio-bridge is good node name

Ok, will use audio-bridge.

best regards
Shengjiu Wang
>
> Frank
> > +                             compatible = "fsl,imx8mp-hdmi-pai";
> > +                             reg = <0x32fc4800 0x800>;
> > +                             interrupt-parent = <&irqsteer_hdmi>;
> > +                             interrupts = <14>;
> > +                             power-domains = <&hdmi_blk_ctrl IMX8MP_HDMIBLK_PD_PAI>;
> > +                             status = "disabled";
> > +
> > +                             port {
> > +
> > +                                     pai_to_hdmi_tx: endpoint {
> > +                                             remote-endpoint = <&hdmi_tx_from_pai>;
> > +                                     };
> > +                             };
> > +                     };
> > +
> >                       lcdif3: display-controller at 32fc6000 {
> >                               compatible = "fsl,imx8mp-lcdif";
> >                               reg = <0x32fc6000 0x1000>;
> > @@ -2140,6 +2156,14 @@ port at 1 {
> >                                               reg = <1>;
> >                                               /* Point endpoint to the HDMI connector */
> >                                       };
> > +
> > +                                     port at 2 {
> > +                                             reg = <2>;
> > +
> > +                                             hdmi_tx_from_pai: endpoint {
> > +                                                     remote-endpoint = <&pai_to_hdmi_tx>;
> > +                                             };
> > +                                     };
> >                               };
> >                       };
> >
> > --
> > 2.34.1
> >