The first two patches in the series implement the CEC capability of the Synopsys DesignWare HDMI QP TX controller found in RK3588 & RK3576 Socs.
This is based on the downstream code, but rewritten on top of the CEC helpers added recently to the DRM HDMI connector framework. The next two patches are needed for RK3576 in order to fixup the timer base setup according to the actual reference clock rate, which differs slightly from RK3588. Please note the CEC helpers are currently affected by a resource deallocation issue which may crash the kernel and freeze the system under certain test conditions. I've already submitted a patch [1] that seems to correct the problem. [1] https://lore.kernel.org/all/20250703-hdmi-cec-helper-unreg-fix-v1-1-7e7b0eb57...@collabora.com/ Signed-off-by: Cristian Ciocaltea <cristian.ciocal...@collabora.com> --- Cristian Ciocaltea (5): drm/rockchip: dw_hdmi_qp: Provide CEC IRQ in dw_hdmi_qp_plat_data drm/bridge: dw-hdmi-qp: Add CEC support drm/rockchip: dw_hdmi_qp: Provide ref clock rate in dw_hdmi_qp_plat_data drm/bridge: dw-hdmi-qp: Fixup timer base setup arm64: defconfig: Enable DW HDMI QP CEC support arch/arm64/configs/defconfig | 1 + drivers/gpu/drm/bridge/synopsys/Kconfig | 8 + drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c | 231 ++++++++++++++++++++++++- drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.h | 14 ++ drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c | 17 +- include/drm/bridge/dw_hdmi_qp.h | 2 + 6 files changed, 269 insertions(+), 4 deletions(-) --- base-commit: 8d6c58332c7a8ba025fcfa76888b6c37dbce9633 change-id: 20250703-rk3588-hdmi-cec-cea8f523df48
