| Message ID | 1518544137-2742-3-git-send-email-kbingham@kernel.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
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>; >
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>;