linux-kernel - [PATCH v8 2/5] dt-bindings: can: can-transceiver: Document new binding

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Message-ID: <1516102634-6771-3-git-send-email-faiz_abbas@ti.com>
Date:   Tue, 16 Jan 2018 17:07:11 +0530
From:   Faiz Abbas <faiz_abbas@...com>
To:     <wg@...ndegger.com>, <mkl@...gutronix.de>, <robh+dt@...nel.org>,
        <mark.rutland@....com>
CC:     <linux-can@...r.kernel.org>, <netdev@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <faiz_abbas@...com>, <nsekhar@...com>, <fcooper@...com>,
        <robh@...nel.org>, <Wenyou.Yang@...rochip.com>,
        <sergei.shtylyov@...entembedded.com>, <linux-omap@...r.kernel.org>,
        <b29396@...escale.com>
Subject: [PATCH v8 2/5] dt-bindings: can: can-transceiver: Document new binding

From: Franklin S Cooper Jr <fcooper@...com>

Add documentation to describe usage of the new can-transceiver binding.
This new binding is applicable for any CAN device therefore it exists as
its own document.

Signed-off-by: Franklin S Cooper Jr <fcooper@...com>
Signed-off-by: Sekhar Nori <nsekhar@...com>
Acked-by: Rob Herring <robh@...nel.org>
Signed-off-by: Faiz Abbas <faiz_abbas@...com>
---
 .../bindings/net/can/can-transceiver.txt           | 24 ++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/can/can-transceiver.txt

diff --git a/Documentation/devicetree/bindings/net/can/can-transceiver.txt b/Documentation/devicetree/bindings/net/can/can-transceiver.txt
new file mode 100644
index 0000000..0011f53
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/can/can-transceiver.txt
@@ -0,0 +1,24 @@
+Generic CAN transceiver Device Tree binding
+------------------------------
+
+CAN transceiver typically limits the max speed in standard CAN and CAN FD
+modes. Typically these limitations are static and the transceivers themselves
+provide no way to detect this limitation at runtime. For this situation,
+the "can-transceiver" node can be used.
+
+Required Properties:
+ max-bitrate:	a positive non 0 value that determines the max
+		speed that CAN/CAN-FD can run. Any other value
+		will be ignored.
+
+Examples:
+
+Based on Texas Instrument's TCAN1042HGV CAN Transceiver
+
+m_can0 {
+	....
+	can-transceiver {
+		max-bitrate = <5000000>;
+	};
+	...
+};
-- 
2.7.4