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Message-ID: <20210624192200.22559-11-p.yadav@ti.com>
Date: Fri, 25 Jun 2021 00:51:59 +0530
From: Pratyush Yadav <p.yadav@...com>
To: Mauro Carvalho Chehab <mchehab@...nel.org>
CC: Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Vignesh Raghavendra <vigneshr@...com>,
Tomi Valkeinen <tomi.valkeinen@...asonboard.com>,
Nikhil Devshatwar <nikhil.nd@...com>,
Pratyush Yadav <p.yadav@...com>,
Rob Herring <robh+dt@...nel.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <linux-media@...r.kernel.org>
Subject: [PATCH v3 10/11] media: dt-bindings: Add DT bindings for TI J721E CSI2RX driver
TI's J721E uses the Cadence CSI2RX and DPHY peripherals to facilitate
capture over a CSI-2 bus. The TI CSI2RX platform driver glues all the
parts together.
Signed-off-by: Pratyush Yadav <p.yadav@...com>
---
(no changes since v2)
Changes in v2:
- Rename to ti,j721e-csi2rx.yaml
- Add an entry in MAINTAINERS.
- Add a description for the binding.
- Change compatible to ti,j721e-csi2rx to make it SoC specific.
- Remove description from dmas, reg, power-domains.
- Remove a limit of 2 from #address-cells and #size-cells.
- Fix add ^ to csi-bridge subnode regex.
- Make ranges mandatory.
- Add unit address in example.
- Add a reference to cdns,csi2rx in csi-bridge subnode.
- Expand the example to include the csi-bridge subnode as well.
- Re-order subject prefixes.
.../bindings/media/ti,j721e-csi2rx.yaml | 101 ++++++++++++++++++
MAINTAINERS | 1 +
2 files changed, 102 insertions(+)
create mode 100644 Documentation/devicetree/bindings/media/ti,j721e-csi2rx.yaml
diff --git a/Documentation/devicetree/bindings/media/ti,j721e-csi2rx.yaml b/Documentation/devicetree/bindings/media/ti,j721e-csi2rx.yaml
new file mode 100644
index 000000000000..db87cfd65bed
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/ti,j721e-csi2rx.yaml
@@ -0,0 +1,101 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/ti,j721e-csi2rx.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI J721E CSI2RX Wrapper Device Tree Bindings
+
+description: |
+ The TI J721E CSI2RX Wrapper is a wrapper around Cadence CSI2RX bridge that
+ enables sending captured frames to memory over PSI-L DMA. In the J721E
+ Technical Reference Manual (SPRUIL1B) it is referred to as "SHIM" under the
+ CSI_RX_IF section.
+
+maintainers:
+ - Pratyush Yadav <p.yadav@...com>
+
+properties:
+ compatible:
+ items:
+ - const: ti,j721e-csi2rx
+
+ dmas:
+ maxItems: 1
+
+ dma-names:
+ items:
+ - const: rx0
+
+ reg:
+ maxItems: 1
+
+ power-domains:
+ maxItems: 1
+
+ ranges: true
+
+ "#address-cells": true
+
+ "#size-cells": true
+
+patternProperties:
+ "^csi-bridge@":
+ type: object
+ description: CSI2 bridge node.
+ $ref: cdns,csi2rx.yaml#
+
+required:
+ - compatible
+ - reg
+ - dmas
+ - dma-names
+ - power-domains
+ - ranges
+ - "#address-cells"
+ - "#size-cells"
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/soc/ti,sci_pm_domain.h>
+
+ ti_csi2rx0: ticsi2rx@...0000 {
+ compatible = "ti,j721e-csi2rx";
+ dmas = <&main_udmap 0x4940>;
+ dma-names = "rx0";
+ reg = <0x4500000 0x1000>;
+ power-domains = <&k3_pds 26 TI_SCI_PD_EXCLUSIVE>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ cdns_csi2rx: csi-bridge@...4000 {
+ compatible = "cdns,csi2rx";
+ reg = <0x4504000 0x1000>;
+ clocks = <&k3_clks 26 2>, <&k3_clks 26 0>, <&k3_clks 26 2>,
+ <&k3_clks 26 2>, <&k3_clks 26 3>, <&k3_clks 26 3>;
+ clock-names = "sys_clk", "p_clk", "pixel_if0_clk",
+ "pixel_if1_clk", "pixel_if2_clk", "pixel_if3_clk";
+ phys = <&dphy0>;
+ phy-names = "dphy";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ csi2_0: port@0 {
+
+ reg = <0>;
+
+ csi2rx0_in_sensor: endpoint {
+ remote-endpoint = <&csi2_cam0>;
+ bus-type = <4>; /* CSI2 DPHY. */
+ clock-lanes = <0>;
+ data-lanes = <1 2>;
+ };
+ };
+ };
+ };
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index 96f002b9046d..e9b110115e5f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -18471,6 +18471,7 @@ TI J721E CSI2RX DRIVER
M: Pratyush Yadav <p.yadav@...com>
L: linux-media@...r.kernel.org
S: Supported
+F: Documentation/devicetree/bindings/media/ti,j721e-csi2rx.yaml
F: drivers/media/platform/ti/j721e-csi2rx/
TI DAVINCI MACHINE SUPPORT
--
2.30.0
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