linux-kernel - [PATCH v4 2/6] dt-bindings: net: can: binding for CTU CAN FD open-source IP core.

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Message-Id: <701442883f2b439637ff84544745725bdee7bcf8.1596408856.git.pisa@cmp.felk.cvut.cz>
Date:   Mon,  3 Aug 2020 20:34:50 +0200
From:   pisa@....felk.cvut.cz
To:     linux-can@...r.kernel.org, devicetree@...r.kernel.org,
        mkl@...gutronix.de, socketcan@...tkopp.net
Cc:     wg@...ndegger.com, davem@...emloft.net, robh+dt@...nel.org,
        mark.rutland@....com, c.emde@...dl.org, armbru@...hat.com,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        martin.jerabek01@...il.com, ondrej.ille@...il.com,
        jnovak@....cvut.cz, jara.beran@...il.com, porazil@...ron.com,
        Pavel Pisa <pisa@....felk.cvut.cz>
Subject: [PATCH v4 2/6] dt-bindings: net: can: binding for CTU CAN FD open-source IP core.

From: Pavel Pisa <pisa@....felk.cvut.cz>

The device-tree bindings for open-source CAN FD IP core
which design started at Department of Measurement
at Faculty of Electrical Engineering
of Czech Technical University in Prague.
The IP core main author is Ondrej Ille who continues
on the core development even after finishing the studies.

The CTU CAN FD IP core main repository

  https://gitlab.fel.cvut.cz/canbus/ctucanfd_ip_core

The list of related CAN bus projects which we participate in

   http://canbus.pages.fel.cvut.cz/

The commit text again to make checkpatch happy.

Signed-off-by: Pavel Pisa <pisa@....felk.cvut.cz>
---
 .../devicetree/bindings/net/can/ctu,ctucanfd.yaml  | 70 ++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/can/ctu,ctucanfd.yaml

diff --git a/Documentation/devicetree/bindings/net/can/ctu,ctucanfd.yaml b/Documentation/devicetree/bindings/net/can/ctu,ctucanfd.yaml
new file mode 100644
index 000000000000..b74bfc951062
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/can/ctu,ctucanfd.yaml
@@ -0,0 +1,70 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/can/ctu,ctucanfd.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: CTU CAN FD Open-source IP Core Device Tree Bindings
+
+description: |
+  Open-source CAN FD IP core developed at the Czech Technical University in Prague
+
+  The core sources and documentation on project page
+    [1] sources : https://gitlab.fel.cvut.cz/canbus/ctucanfd_ip_core
+    [2] datasheet : https://canbus.pages.fel.cvut.cz/ctucanfd_ip_core/Progdokum.pdf
+
+  Integration in Xilinx Zynq SoC based system together with
+  OpenCores SJA1000 compatible controllers
+    [3] project : https://gitlab.fel.cvut.cz/canbus/zynq/zynq-can-sja1000-top
+  Martin Jerabek dimploma thesis with integration and testing
+  framework description
+    [4] PDF : https://dspace.cvut.cz/bitstream/handle/10467/80366/F3-DP-2019-Jerabek-Martin-Jerabek-thesis-2019-canfd.pdf
+
+maintainers:
+  - Pavel Pisa <pisa@....felk.cvut.cz>
+  - Ondrej Ille <ondrej.ille@...il.com>
+  - Martin Jerabek <martin.jerabek01@...il.com>
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - const: ctu,ctucanfd
+          - const: ctu,canfd-2
+      - const: ctu,ctucanfd
+
+  reg:
+    description:
+      mapping into bus address space, offset and size
+    maxItems: 1
+
+  interrupts:
+    description: |
+      interrupt source. For Zynq SoC system, format is <(is_spi) (number) (type)>
+      where is_spi defines if it is SPI (shared peripheral) interrupt,
+      the second number is translated to the vector by addition of 32
+      on Zynq-7000 systems and type is IRQ_TYPE_LEVEL_HIGH (4) for Zynq.
+    maxItems: 1
+
+  clocks:
+    description: |
+      phandle of reference clock (100 MHz is appropriate
+      for FPGA implementation on Zynq-7000 system).
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+
+additionalProperties: false
+
+examples:
+  - |
+    ctu_can_fd_0: can@...30000 {
+      compatible = "ctu,ctucanfd";
+      interrupts = <0 30 4>;
+      clocks = <&clkc 15>;
+      reg = <0x43c30000 0x10000>;
+    };
-- 
2.11.0