media: dt-bindings: media: Add Allwinner A10 CSI binding

The Allwinner A10 CMOS Sensor Interface is a camera capture interface also
used in later (A10s, A13, A20, R8 and GR8) SoCs.

On some SoCs, like the A10, there's multiple instances of that controller,
with one instance supporting more channels and having an ISP.

[Sakari Ailus: Add type: object to the endpoint node.]

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Maxime Ripard 2019-08-22 05:21:12 -03:00 committed by Mauro Carvalho Chehab
parent 623fd246bb
commit c5e8f4ccd7
2 changed files with 116 additions and 0 deletions

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@ -0,0 +1,109 @@
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/arm/allwinner,sun4i-a10-csi.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Allwinner A10 CMOS Sensor Interface (CSI) Device Tree Bindings
maintainers:
- Chen-Yu Tsai <wens@csie.org>
- Maxime Ripard <maxime.ripard@bootlin.com>
description: |-
The Allwinner A10 and later has a CMOS Sensor Interface to retrieve
frames from a parallel or BT656 sensor.
properties:
compatible:
const: allwinner,sun7i-a20-csi0
reg:
maxItems: 1
interrupts:
maxItems: 1
clocks:
items:
- description: The CSI interface clock
- description: The CSI module clock
- description: The CSI ISP clock
- description: The CSI DRAM clock
clock-names:
items:
- const: bus
- const: mod
- const: isp
- const: ram
resets:
maxItems: 1
# See ./video-interfaces.txt for details
port:
type: object
additionalProperties: false
properties:
endpoint:
type: object
properties:
bus-width:
enum: [8, 16]
data-active: true
hsync-active: true
pclk-sample: true
remote-endpoint: true
vsync-active: true
required:
- bus-width
- data-active
- hsync-active
- pclk-sample
- remote-endpoint
- vsync-active
required:
- endpoint
required:
- compatible
- reg
- interrupts
- clocks
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/clock/sun7i-a20-ccu.h>
#include <dt-bindings/reset/sun4i-a10-ccu.h>
csi0: csi@1c09000 {
compatible = "allwinner,sun7i-a20-csi0";
reg = <0x01c09000 0x1000>;
interrupts = <GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&ccu CLK_AHB_CSI0>, <&ccu CLK_CSI0>,
<&ccu CLK_CSI_SCLK>, <&ccu CLK_DRAM_CSI0>;
clock-names = "bus", "mod", "isp", "ram";
resets = <&ccu RST_CSI0>;
port {
csi_from_ov5640: endpoint {
remote-endpoint = <&ov5640_to_csi>;
bus-width = <8>;
hsync-active = <1>; /* Active high */
vsync-active = <0>; /* Active low */
data-active = <1>; /* Active high */
pclk-sample = <1>; /* Rising */
};
};
};
...

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@ -1421,6 +1421,13 @@ F: drivers/pinctrl/sunxi/
F: drivers/soc/sunxi/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux.git
Allwinner A10 CSI driver
M: Maxime Ripard <mripard@kernel.org>
L: linux-media@vger.kernel.org
T: git git://linuxtv.org/media_tree.git
F: Documentation/devicetree/bindings/media/allwinner,sun4i-a10-csi.yaml
S: Maintained
ARM/Amlogic Meson SoC CLOCK FRAMEWORK
M: Neil Armstrong <narmstrong@baylibre.com>
M: Jerome Brunet <jbrunet@baylibre.com>