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dt-bindings: adv7511: Extend bindings to allow specifying slave map addresses 

The ADV7511 has four 256-byte maps that can be accessed via the main I2C
ports. Each map has it own I2C address and acts as a standard slave
device on the I2C bus.

Extend the device tree node bindings to be able to override the default
addresses so that address conflicts with other devices on the same bus
may be resolved at the board description level.

Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1518544137-2742-3-git-send-email-kbingham@kernel.org
This commit is contained in:
Kieran Bingham 2018-02-13 17:48:54 +00:00 committed by Archit Taneja
parent 6e35fed963
commit ffdd073681
1 changed files with 16 additions and 2 deletions
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18
Documentation/devicetree/bindings/display/bridge/adi,adv7511.txt
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@ -14,7 +14,13 @@ Required properties:
"adi,adv7513"
"adi,adv7533"
- reg: I2C slave address
- reg: I2C slave addresses
The ADV7511 internal registers are split into four pages exposed through
different I2C addresses, creating four register maps. Each map has it own
I2C address and acts as a standard slave device on the I2C bus. The main
address is mandatory, others are optional and revert to defaults if not
specified.
The ADV7511 supports a large number of input data formats that differ by their
color depth, color format, clock mode, bit justification and random
@ -70,6 +76,9 @@ Optional properties:
rather than generate its own timings for HDMI output.
- clocks: from common clock binding: reference to the CEC clock.
- clock-names: from common clock binding: must be "cec".
- reg-names : Names of maps with programmable addresses.
It can contain any map needing a non-default address.
Possible maps names are : "main", "edid", "cec", "packet"
Required nodes:
@ -88,7 +97,12 @@ Example
adv7511w: hdmi@39 {
compatible = "adi,adv7511w";
reg = <39>;
/*
* The EDID page will be accessible on address 0x66 on the I2C
* bus. All other maps continue to use their default addresses.
*/
reg = <0x39>, <0x66>;
reg-names = "main", "edid";
interrupt-parent = <&gpio3>;
interrupts = <29 IRQ_TYPE_EDGE_FALLING>;
clocks = <&cec_clock>;