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SubjectRe: [PATCH v4 2/5] dt-bindings: adv7511: Extend bindings to allow specifying slave map addresses
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On Tuesday 13 February 2018 11:18 PM, Kieran Bingham wrote:
> From: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
>
> 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.
>

Queued to drm-misc-next

> 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>
> ---
> v2:
> - Fixed up reg: property description to account for multiple optional
> addresses.
> - Minor reword to commit message to account for DT only change
> - Collected Robs RB tag
>
> v3:
> - Split map register addresses into individual declarations.
>
> v4:
> - Update commit title
> - Collect Laurent's RB tag
> - Fix nitpickings
> - Normalise I2C usage (I²C is harder to grep for)
>
> .../devicetree/bindings/display/bridge/adi,adv7511.txt | 18 ++++++++++++++++--
> 1 file changed, 16 insertions(+), 2 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/display/bridge/adi,adv7511.txt b/Documentation/devicetree/bindings/display/bridge/adi,adv7511.txt
> index 0047b1394c70..2c887536258c 100644
> --- a/Documentation/devicetree/bindings/display/bridge/adi,adv7511.txt
> +++ b/Documentation/devicetree/bindings/display/bridge/adi,adv7511.txt
> @@ -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>;
>

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