[PATCH v4 5/7] drm/bridge: imx: add driver for HDMI TX Parallel Audio Interface

[Liu Ying]

On 08/08/2025, 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.
> This IP block is found in the HDMI subsystem of the i.MX8MP SoC.
> 
> Data received from the audio subsystem can have an arbitrary component
> ordering. The HTX_PAI block has integrated muxing options to select which
> sections of the 32-bit input data word will be mapped to each IEC60958
> field. The HTX_PAI_FIELD_CTRL register contains mux selects to
> individually select P,C,U,V,Data, and Preamble.
> 
> Use component helper so that imx8mp-hdmi-tx will be aggregate driver,
> imx8mp-hdmi-pai will be component driver, then imx8mp-hdmi-pai can use
> bind() ops to get the plat_data from imx8mp-hdmi-tx device.
> 
> Signed-off-by: Shengjiu Wang <shengjiu.wang at nxp.com>
> ---
>  drivers/gpu/drm/bridge/imx/Kconfig           |  11 ++
>  drivers/gpu/drm/bridge/imx/Makefile          |   1 +
>  drivers/gpu/drm/bridge/imx/imx8mp-hdmi-pai.c | 158 +++++++++++++++++++
>  drivers/gpu/drm/bridge/imx/imx8mp-hdmi-tx.c  |  63 +++++++-
>  include/drm/bridge/dw_hdmi.h                 |   6 +
>  5 files changed, 234 insertions(+), 5 deletions(-)
>  create mode 100644 drivers/gpu/drm/bridge/imx/imx8mp-hdmi-pai.c

Reviewed-by: Liu Ying <victor.liu at nxp.com>
Thanks!