Hi Lubomir, Thank you for the patch. On Fri, Oct 30, 2020 at 04:07:59AM +0100, Lubomir Rintel wrote: > Himax HX8837 is a secondary display controller used to drive the panel > on OLPC platforms. > > Signed-off-by: Lubomir Rintel <lkundrak@xxxxx> > Reviewed-by: Rob Herring <robh@xxxxxxxxxx> > > --- > Changes since v4: > - Rob's Reviewed-by > > Changes since v3: > - Moved to bindings/display/ > - Added the ports > - Converted to YAML > - Removed Pavel's Ack, because the changes are substantial > > Changes since v2: > - s/betweend/between/ > > Changes since v1: > - s/load-gpio/load-gpios/ > - Use interrupt bindings instead of gpio for the IRQ > > .../bindings/display/bridge/himax,hx8837.yaml | 96 +++++++++++++++++++ > 1 file changed, 96 insertions(+) > create mode 100644 Documentation/devicetree/bindings/display/bridge/himax,hx8837.yaml > > diff --git a/Documentation/devicetree/bindings/display/bridge/himax,hx8837.yaml b/Documentation/devicetree/bindings/display/bridge/himax,hx8837.yaml > new file mode 100644 > index 0000000000000..f5b0a00f5089d > --- /dev/null > +++ b/Documentation/devicetree/bindings/display/bridge/himax,hx8837.yaml > @@ -0,0 +1,96 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +# Copyright (C) 2018,2019,2020 Lubomir Rintel <lkundrak@xxxxx> > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/display/bridge/himax,hx8837.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: HX8837 Display Controller Device Tree Bindings > + > +maintainers: > + - Lubomir Rintel <lkundrak@xxxxx> > + > +properties: > + compatible: > + const: himax,hx8837 > + > + reg: > + const: 0xd > + > + load-gpios: > + maxItems: 1 > + description: GPIO specifier of DCON_LOAD pin (active high) > + > + stat-gpios: > + minItems: 2 > + description: GPIO specifier of DCON_STAT0 and DCON_STAT1 pins (active high) > + > + interrupts: > + maxItems: 1 > + description: Interrupt specifier of DCON_IRQ pin (edge falling) > + > + ports: > + type: object > + > + properties: > + port@0: > + type: object > + description: | > + Video port for RGB input. > + > + port@1: > + type: object > + description: | > + Video port connected to the panel. > + > + required: > + - port@0 > + - port@1 No regulators ? > + > +required: > + - compatible > + - reg > + - load-gpios > + - stat-gpios Do stat-gpios need to be mandatory ? The driver in patch 2/2 doesn't seem to use them, could we have boards where those signals are not connected to GPIOs ? > + - interrupts > + - ports > + > +additionalProperties: false > + > +examples: > + - | > + #include <dt-bindings/gpio/gpio.h> > + #include <dt-bindings/interrupt-controller/irq.h> > + > + i2c { > + #address-cells = <1>; > + #size-cells = <0>; > + Could you please avoid spaces or tabs at end of lines ? There are three other occurrences below. > + lcd-controller@d { > + compatible = "himax,hx8837"; > + reg = <0x0d>; > + stat-gpios = <&gpio 100 GPIO_ACTIVE_HIGH>, > + <&gpio 101 GPIO_ACTIVE_HIGH>; > + load-gpios = <&gpio 142 GPIO_ACTIVE_HIGH>; > + interrupts = <&gpio 124 IRQ_TYPE_EDGE_FALLING>; > + > + ports { > + #address-cells = <0x01>; > + #size-cells = <0x00>; > + > + port@0 { > + reg = <0x00>; reg = <0> should be fine. Same below. With thse small issues addressed, > + dcon_rgb_in: endpoint { > + remote-endpoint = <&lcd0_rgb_out>; > + }; > + }; > + > + port@1 { > + reg = <0x01>; > + dcon_gettl_out: endpoint { > + remote-endpoint = <&panel_dettl_in>; > + }; > + }; > + }; > + }; > + }; It's customary to end bindings with ... (not sure why though, given that it seems to work find without) -- Regards, Laurent Pinchart
