From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
To: linux-media@vger.kernel.org
Cc: Dave Stevenson <dave.stevenson@raspberrypi.com>,
David Plowman <david.plowman@raspberrypi.com>,
Jean-Michel Hautbois <jeanmichel.hautbois@yoseli.org>,
Hans Verkuil <hverkuil-cisco@xs4all.nl>,
Naushir Patuck <naush@raspberrypi.com>,
Sakari Ailus <sakari.ailus@linux.intel.com>,
kernel-list@raspberrypi.com,
linux-rpi-kernel@lists.infradead.org,
Florian Fainelli <florian.fainelli@broadcom.com>,
Ray Jui <rjui@broadcom.com>,
Scott Branden <sbranden@broadcom.com>,
bcm-kernel-feedback-list@broadcom.com,
Conor Dooley <conor+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
devicetree@vger.kernel.org
Subject: [PATCH v7 08/15] dt-bindings: media: Add bindings for bcm2835-unicam
Date: Mon, 25 Mar 2024 00:08:44 +0200 [thread overview]
Message-ID: <20240324220854.15010-9-laurent.pinchart@ideasonboard.com> (raw)
In-Reply-To: <20240324220854.15010-1-laurent.pinchart@ideasonboard.com>
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
Introduce the dt-bindings documentation for bcm2835 CCP2/CSI2 Unicam
camera interface.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Co-developed-by: Naushir Patuck <naush@raspberrypi.com>
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Co-developed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>
Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
Changes since v5:
- Squash MAINTAINERS changes in
Changes since v3:
- Make MAINTAINERS its own patch
- Describe the reg and clocks correctly
- Use a vendor entry for the number of data lanes
---
.../bindings/media/brcm,bcm2835-unicam.yaml | 117 ++++++++++++++++++
MAINTAINERS | 6 +
2 files changed, 123 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..1938ace23b3d
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml
@@ -0,0 +1,117 @@
+# 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:
+ - Raspberry Pi Kernel Maintenance <kernel-list@raspberrypi.com>
+
+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 whose name starts with '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:
+ items:
+ - description: Unicam block.
+ - description: Clock Manager Image (CMI) block.
+
+ reg-names:
+ items:
+ - const: unicam
+ - const: cmi
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ items:
+ - description: Clock to drive the LP state machine of Unicam.
+ - description: Clock for the VPU (core clock).
+
+ clock-names:
+ items:
+ - const: lp
+ - const: vpu
+
+ power-domains:
+ items:
+ - description: Unicam power domain
+
+ brcm,num-data-lanes:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [ 2, 4 ]
+ description: |
+ Number of CSI-2 data lanes supported by this Unicam instance. The number
+ of data lanes actively used is specified with the data-lanes endpoint
+ property.
+
+ port:
+ $ref: /schemas/graph.yaml#/$defs/port-base
+ unevaluatedProperties: false
+
+ properties:
+ endpoint:
+ $ref: /schemas/media/video-interfaces.yaml#
+ unevaluatedProperties: false
+
+ properties:
+ data-lanes: true
+
+ required:
+ - data-lanes
+
+ required:
+ - endpoint
+
+required:
+ - compatible
+ - reg
+ - reg-names
+ - interrupts
+ - clocks
+ - clock-names
+ - power-domains
+ - brcm,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>;
+ reg-names = "unicam", "cmi";
+ 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>;
+ brcm,num-data-lanes = <2>;
+ port {
+ csi1_ep: endpoint {
+ remote-endpoint = <&imx219_0>;
+ data-lanes = <1 2>;
+ };
+ };
+ };
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index 63c42cc6748b..ee7ee1ec6370 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4035,6 +4035,12 @@ N: bcm113*
N: bcm216*
N: kona
+BROADCOM BCM2835 CAMERA DRIVERS
+M: Raspberry Pi Kernel Maintenance <kernel-list@raspberrypi.com>
+L: linux-media@vger.kernel.org
+S: Maintained
+F: Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml
+
BROADCOM BCM47XX MIPS ARCHITECTURE
M: Hauke Mehrtens <hauke@hauke-m.de>
M: Rafał Miłecki <zajec5@gmail.com>
--
Regards,
Laurent Pinchart
next prev parent reply other threads:[~2024-03-24 22:09 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-24 22:08 [PATCH v7 00/15] media: Add driver for the Raspberry Pi <5 CSI-2 receiver Laurent Pinchart
2024-03-24 22:08 ` [PATCH v7 01/15] media: i2c: imx219: Inline imx219_update_pad_format() in its caller Laurent Pinchart
2024-03-24 22:08 ` [PATCH v7 02/15] media: i2c: imx219: Add internal image sink pad Laurent Pinchart
2024-03-27 9:51 ` Tomi Valkeinen
2024-03-28 16:09 ` Laurent Pinchart
2024-03-28 16:18 ` Tomi Valkeinen
2024-03-28 16:56 ` Laurent Pinchart
2024-03-24 22:08 ` [PATCH v7 03/15] media: i2c: imx219: Report internal routes to userspace Laurent Pinchart
2024-03-27 9:56 ` Tomi Valkeinen
2024-04-04 8:19 ` Tomi Valkeinen
2024-04-04 8:29 ` Sakari Ailus
2024-04-04 10:29 ` Tomi Valkeinen
2024-04-04 10:34 ` Laurent Pinchart
2024-03-24 22:08 ` [PATCH v7 04/15] media: i2c: imx219: Report streams using frame descriptors Laurent Pinchart
2024-03-27 10:08 ` Tomi Valkeinen
2024-03-28 17:17 ` Laurent Pinchart
2024-03-24 22:08 ` [PATCH v7 05/15] media: i2c: imx219: Add embedded data support Laurent Pinchart
2024-03-26 23:30 ` Sakari Ailus
2024-03-27 0:22 ` Laurent Pinchart
2024-03-27 6:52 ` Sakari Ailus
2024-03-27 10:51 ` Tomi Valkeinen
2024-03-28 21:49 ` Laurent Pinchart
2024-03-29 9:13 ` Tomi Valkeinen
2024-03-24 22:08 ` [PATCH v7 06/15] media: v4l: Add V4L2-PIX-FMT-Y12P format Laurent Pinchart
2024-03-27 11:08 ` Tomi Valkeinen
2024-03-27 11:18 ` Laurent Pinchart
2024-03-24 22:08 ` [PATCH v7 07/15] media: v4l: Add V4L2-PIX-FMT-Y14P format Laurent Pinchart
2024-03-24 22:08 ` Laurent Pinchart [this message]
2024-03-24 22:08 ` [PATCH v7 09/15] media: bcm2835-unicam: Add support for CCP2/CSI2 camera interface Laurent Pinchart
2024-03-27 11:21 ` Tomi Valkeinen
2024-04-01 13:52 ` Laurent Pinchart
2024-04-02 6:00 ` Tomi Valkeinen
2024-04-02 6:05 ` Laurent Pinchart
2024-03-24 22:08 ` [PATCH v7 10/15] ARM: dts: bcm2835-rpi: Move firmware-clocks from bcm2711 to bcm2835 Laurent Pinchart
2024-03-24 22:08 ` [PATCH v7 11/15] ARM: dts: bcm2835: Add Unicam CSI nodes Laurent Pinchart
2024-03-24 22:08 ` [PATCH v7 12/15] ARM: dts: bcm2711-rpi: Add pinctrl-based multiplexing for I2C0 Laurent Pinchart
2024-03-24 22:08 ` [PATCH v7 13/15] ARM: dts: bcm2711-rpi-cm4-io: Add RTC on I2C0 Laurent Pinchart
2024-03-24 22:08 ` [PATCH v7 14/15] ARM: dts: bcm2711-rpi-4-b: Add CAM1 regulator Laurent Pinchart
2024-03-24 22:08 ` [PATCH v7 15/15] [DNI] arm64: dts: broadcom: Add overlay for Raspberry Pi 4B IMX219 camera Laurent Pinchart
2024-03-25 13:55 ` [PATCH v7 00/15] media: Add driver for the Raspberry Pi <5 CSI-2 receiver Rob Herring
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