Hi Jean-Michel, please drop the first "media:" before dt-bindings. Am 02.02.22 um 18:56 schrieb Jean-Michel Hautbois: > Introduce the dt-bindings documentation for bcm2835 CCP2/CSI2 Unicam > camera interface. Also add a MAINTAINERS entry for it. > > Signed-off-by: Dave Stevenson <dave.stevenson@xxxxxxxxxxxxxxx> > Signed-off-by: Naushir Patuck <naush@xxxxxxxxxxxxxxx> > Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@xxxxxxxxxxxxxxxx> > --- > Dave: I assumed you were the maintainer for this file, as I based it on the > bcm2835-unicam.txt file. Are you happy to be added directly as the > maintainer, or should this be specified as "Raspberry Pi Kernel > Maintenance <kernel-list@xxxxxxxxxxxxxxx>" > --- > .../bindings/media/brcm,bcm2835-unicam.yaml | 107 ++++++++++++++++++ > MAINTAINERS | 7 ++ > 2 files changed, 114 insertions(+) > create mode 100644 Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml > > diff --git a/Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml b/Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml > new file mode 100644 > index 000000000000..5bf41a8834fa > --- /dev/null > +++ b/Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml > @@ -0,0 +1,107 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/media/brcm,bcm2835-unicam.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Broadcom BCM283x Camera Interface (Unicam) > + > +maintainers: > + - Dave Stevenson <dave.stevenson@xxxxxxxxxxxxxxx> > + > +description: |- > + The Unicam block on BCM283x SoCs is the receiver for either > + CSI-2 or CCP2 data from image sensors or similar devices. > + > + The main platform using this SoC is the Raspberry Pi family of boards. > + On the Pi the VideoCore firmware can also control this hardware block, > + and driving it from two different processors will cause issues. > + To avoid this, the firmware checks the device tree configuration > + during boot. If it finds device tree nodes starting by csi then > + it will stop the firmware accessing the block, and it can then > + safely be used via the device tree binding. > + > +properties: > + compatible: > + const: brcm,bcm2835-unicam > + > + reg: > + maxItems: 2 I would be nice to have reg-names here similar to the clocks. > + > + interrupts: > + maxItems: 1 > + > + clocks: > + items: > + - description: Clock for the camera. > + - description: Clock for the vpu. > + > + clock-names: > + items: > + - const: lp > + - const: vpu > + > + power-domains: > + items: > + - description: Unicam power domain > + > + num-data-lanes: > + items: > + - enum: [ 2, 4 ] > + > + port: > + additionalProperties: false > + $ref: /schemas/graph.yaml#/$defs/port-base > + > + properties: > + endpoint: > + $ref: /schemas/media/video-interfaces.yaml# > + unevaluatedProperties: false > + > + properties: > + data-lanes: true > + link-frequencies: true > + > + required: > + - data-lanes > + - link-frequencies > + > + required: > + - endpoint > + > +required: > + - compatible > + - reg > + - interrupts > + - clocks > + - clock-names > + - power-domains > + - num-data-lanes > + - port > + > +additionalProperties: False > + > +examples: > + - | > + #include <dt-bindings/clock/bcm2835.h> > + #include <dt-bindings/interrupt-controller/arm-gic.h> > + #include <dt-bindings/power/raspberrypi-power.h> > + csi1: csi@7e801000 { > + compatible = "brcm,bcm2835-unicam"; > + reg = <0x7e801000 0x800>, > + <0x7e802004 0x4>; > + interrupts = <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>; > + clocks = <&clocks BCM2835_CLOCK_CAM1>, > + <&firmware_clocks 4>; > + clock-names = "lp", "vpu"; > + power-domains = <&power RPI_POWER_DOMAIN_UNICAM1>; > + num-data-lanes = <2>; > + port { > + csi1_ep: endpoint { > + remote-endpoint = <&imx219_0>; > + data-lanes = <1 2>; > + link-frequencies = /bits/ 64 <456000000>; > + }; > + }; > + }; > +... > diff --git a/MAINTAINERS b/MAINTAINERS > index a0770a861ca4..29344ea86847 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -3670,6 +3670,13 @@ N: bcm113* > N: bcm216* > N: kona > > +BROADCOM BCM2835 CAMERA DRIVER > +M: Raspberry Pi Kernel Maintenance <kernel-list@xxxxxxxxxxxxxxx> > +L: linux-media@xxxxxxxxxxxxxxx > +S: Maintained > +F: Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml > +F: arch/arm/boot/dts/bcm283x* > + I suggest to make the MAINTAINERS changes a single separate patch instead of small incremental changes. Best regards > BROADCOM BCM47XX MIPS ARCHITECTURE > M: Hauke Mehrtens <hauke@xxxxxxxxxx> > M: Rafał Miłecki <zajec5@xxxxxxxxx>
