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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 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.



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"

	For G12A (AO_CEC_B module) :

	"amlogic,meson-g12a-ao-cec"



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

	  mapped region.



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

  - 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.

  - hdmi-phandle: phandle to the HDMI controller