Commit 3473ba38 authored by Neil Armstrong's avatar Neil Armstrong Committed by Mauro Carvalho Chehab
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media: dt-bindings: media: meson-ao-cec: Add G12A AO-CEC-B Compatible 



The Amlogic G12A embeds a second CEC controller named AO-CEC-B, and
the other one is AO-CEC-A described by the current bindings.

The register interface is very close but the internal architecture
is totally different.

The other difference is the clock source, the AO-CEC-B takes the
"oscin", the Always-On Oscillator clock, as input and embeds a
dual-divider clock divider to provide the precise 32768Hz base
clock for CEC communication.

Signed-off-by: default avatarNeil Armstrong <narmstrong@baylibre.com>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+samsung@kernel.org>
parent cea053be

Documentation/devicetree/bindings/media/meson-ao-cec.txt

+10 −3
Original line number Original line Diff line number Diff line
@@ -4,15 +4,22 @@ The Amlogic Meson AO-CEC module is present is Amlogic SoCs and its purpose is 
to handle communication between HDMI connected devices over the CEC bus.

to handle communication between HDMI connected devices over the CEC bus.





Required properties:

Required properties:

  - compatible : value should be following

  - compatible : value should be following depending on the SoC :

	For GXBB, GXL, GXM and G12A (AO_CEC_A module) :

	"amlogic,meson-gx-ao-cec"

	"amlogic,meson-gx-ao-cec"

	For G12A (AO_CEC_B module) :

	"amlogic,meson-g12a-ao-cec"





  - reg : Physical base address of the IP registers and length of memory

  - reg : Physical base address of the IP registers and length of memory

	  mapped region.

	  mapped region.





  - interrupts : AO-CEC interrupt number to the CPU.

  - interrupts : AO-CEC interrupt number to the CPU.

  - clocks : from common clock binding: handle to AO-CEC clock.

  - clocks : from common clock binding: handle to AO-CEC clock.

  - clock-names : from common clock binding: must contain "core",

  - clock-names : from common clock binding, must contain :

		For GXBB, GXL, GXM and G12A (AO_CEC_A module) :

		- "core"

		For G12A (AO_CEC_B module) :

		- "oscin"

		corresponding to entry in the clocks property.

		corresponding to entry in the clocks property.

  - hdmi-phandle: phandle to the HDMI controller

  - hdmi-phandle: phandle to the HDMI controller