From: Vladimir Zapolskiy <vz@mleia.com>
To: Lee Jones <lee.jones@linaro.org>,
Linus Walleij <linus.walleij@linaro.org>,
Rob Herring <robh+dt@kernel.org>
Cc: Marek Vasut <marek.vasut@gmail.com>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Wolfram Sang <wsa@the-dreams.de>,
devicetree@vger.kernel.org, linux-gpio@vger.kernel.org,
linux-media@vger.kernel.org, linux-kernel@vger.kernel.org,
Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>
Subject: [PATCH 2/7] dt-bindings: mfd: ds90ux9xx: add description of TI DS90Ux9xx I2C bridge
Date: Tue, 9 Oct 2018 00:12:00 +0300 [thread overview]
Message-ID: <20181008211205.2900-3-vz@mleia.com> (raw)
In-Reply-To: <20181008211205.2900-1-vz@mleia.com>
From: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>
TI DS90Ux9xx de-/serializers are capable to route I2C messages to
I2C slave devices connected to a remote de-/serializer in a pair,
the change adds description of device tree bindings of the subcontroller
to configure and enable this functionality.
Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>
---
.../bindings/mfd/ti,ds90ux9xx-i2c-bridge.txt | 61 +++++++++++++++++++
1 file changed, 61 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mfd/ti,ds90ux9xx-i2c-bridge.txt
diff --git a/Documentation/devicetree/bindings/mfd/ti,ds90ux9xx-i2c-bridge.txt b/Documentation/devicetree/bindings/mfd/ti,ds90ux9xx-i2c-bridge.txt
new file mode 100644
index 000000000000..4169e382073a
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/ti,ds90ux9xx-i2c-bridge.txt
@@ -0,0 +1,61 @@
+TI DS90Ux9xx de-/serializer I2C bridge subcontroller
+
+Required properties:
+- compatible: Must contain a generic "ti,ds90ux9xx-i2c-bridge" value and
+ may contain one more specific value from the list:
+ "ti,ds90ux925-i2c-bridge",
+ "ti,ds90ux926-i2c-bridge",
+ "ti,ds90ux927-i2c-bridge",
+ "ti,ds90ux928-i2c-bridge",
+ "ti,ds90ux940-i2c-bridge".
+
+Required properties of a de-/serializer device connected to a local I2C bus:
+- ti,i2c-bridges: List of phandles to remote de-/serializer devices with
+ two arguments: id of a local de-/serializer FPD link and an assigned
+ I2C address of a remote de-/serializer to be accessed on a local
+ I2C bus.
+
+Optional properties of a de-/serializer device connected to a local I2C bus:
+- ti,i2c-bridge-maps: List of 3-cell values:
+ - the first argument is id of a local de-/serializer FPD link,
+ - the second argument is an I2C address of a device connected to
+ a remote de-/serializer IC,
+ - the third argument is an I2C address of the remote I2C device
+ for access on a local I2C bus.
+- ti,i2c-bridge-auto-ack: Enables AUTO ACK mode.
+- ti,i2c-bridge-pass-all: Enables PASS ALL mode, remote I2C slave devices
+ are accessible on a local (host) I2C bus without I2C address
+ remappings.
+
+Remote de-/serializer device may contain a list of device nodes, each
+one represents an I2C device connected to that remote de-/serializer IC.
+
+Example (remote device is a deserializer with Atmel MXT touchscreen):
+
+serializer: serializer@c {
+ compatible = "ti,ds90ub927q", "ti,ds90ux9xx";
+ reg = <0xc>;
+
+ i2c-bridge {
+ compatible = "ti,ds90ux927-i2c-bridge",
+ "ti,ds90ux9xx-i2c-bridge";
+ ti,i2c-bridges = <&deserializer 0 0x3b>;
+ ti,i2c-bridge-maps = <0 0x4b 0x64>;
+ };
+};
+
+deserializer: deserializer {
+ compatible = "ti,ds90ub928q", "ti,ds90ux9xx";
+
+ i2c-bridge {
+ compatible = "ti,ds90ux928-i2c-bridge",
+ "ti,ds90ux9xx-i2c-bridge";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ touchscreen@4b {
+ compatible = "atmel,maxtouch";
+ reg = <0x4b>;
+ };
+ };
+};
--
2.17.1
next prev parent reply other threads:[~2018-10-08 21:12 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-08 21:11 [PATCH 0/7] mfd/pinctrl: add initial support of TI DS90Ux9xx ICs Vladimir Zapolskiy
2018-10-08 21:11 ` [PATCH 1/7] dt-bindings: mfd: ds90ux9xx: add description " Vladimir Zapolskiy
2018-10-09 0:13 ` Marek Vasut
2018-10-09 11:11 ` Vladimir Zapolskiy
2018-10-09 20:55 ` Vladimir Zapolskiy
2018-10-09 21:03 ` Marek Vasut
2018-10-10 8:41 ` Linus Walleij
2018-10-12 11:44 ` Laurent Pinchart
2018-10-13 14:28 ` Vladimir Zapolskiy
2018-10-16 12:30 ` Laurent Pinchart
2018-10-30 16:43 ` Luca Ceresoli
2018-10-30 23:40 ` Vladimir Zapolskiy
2018-10-08 21:12 ` Vladimir Zapolskiy [this message]
2018-10-12 11:54 ` [PATCH 2/7] dt-bindings: mfd: ds90ux9xx: add description of TI DS90Ux9xx I2C bridge Laurent Pinchart
2018-10-30 16:43 ` Luca Ceresoli
2018-10-31 20:12 ` Vladimir Zapolskiy
2018-11-03 21:00 ` Luca Ceresoli
2018-11-03 22:07 ` Vladimir Zapolskiy
2018-10-08 21:12 ` [PATCH 3/7] dt-bindings: pinctrl: ds90ux9xx: add description of TI DS90Ux9xx pinmux Vladimir Zapolskiy
2018-10-10 8:45 ` Linus Walleij
2018-10-17 15:02 ` Rob Herring
2018-10-12 12:01 ` Laurent Pinchart
2018-10-13 13:47 ` Vladimir Zapolskiy
2018-10-16 12:48 ` Laurent Pinchart
2018-10-30 16:44 ` Luca Ceresoli
2018-10-31 20:31 ` Vladimir Zapolskiy
2018-10-08 21:12 ` [PATCH 4/7] mfd: ds90ux9xx: add TI DS90Ux9xx de-/serializer MFD driver Vladimir Zapolskiy
2018-10-09 4:08 ` kbuild test robot
2018-10-09 11:14 ` Vladimir Zapolskiy
2018-10-12 6:03 ` Lee Jones
2018-10-12 7:41 ` Vladimir Zapolskiy
2018-10-12 8:39 ` Lee Jones
2018-10-12 9:20 ` Kieran Bingham
2018-10-12 10:58 ` Vladimir Zapolskiy
2018-10-12 11:34 ` Lee Jones
2018-10-12 14:13 ` Vladimir Zapolskiy
2018-10-12 14:25 ` Lee Jones
2018-10-12 11:47 ` Kieran Bingham
2018-10-12 13:01 ` Laurent Pinchart
2018-10-12 13:59 ` Vladimir Zapolskiy
2018-10-16 13:08 ` Laurent Pinchart
2018-10-23 8:16 ` Vladimir Zapolskiy
2018-10-30 16:44 ` Luca Ceresoli
2018-10-13 15:10 ` Vladimir Zapolskiy
2018-10-16 13:12 ` Laurent Pinchart
2018-10-16 18:32 ` Vladimir Zapolskiy
2018-10-13 12:33 ` Vladimir Zapolskiy
2018-10-12 11:24 ` Vladimir Zapolskiy
2018-10-12 11:43 ` Lee Jones
2018-10-12 14:23 ` Vladimir Zapolskiy
2018-10-12 13:07 ` Laurent Pinchart
2018-10-08 21:12 ` [PATCH 5/7] mfd: ds90ux9xx: add I2C bridge/alias and link connection driver Vladimir Zapolskiy
2018-10-12 6:04 ` Lee Jones
2018-10-12 7:32 ` Vladimir Zapolskiy
2018-10-12 9:03 ` Lee Jones
2018-10-12 13:12 ` Laurent Pinchart
2018-10-12 14:36 ` Vladimir Zapolskiy
2018-10-16 14:06 ` Laurent Pinchart
2018-10-08 21:12 ` [PATCH 6/7] pinctrl: ds90ux9xx: add TI DS90Ux9xx pinmux and GPIO controller driver Vladimir Zapolskiy
2018-10-10 9:04 ` Linus Walleij
2018-10-08 21:12 ` [PATCH 7/7] MAINTAINERS: add entry for TI DS90Ux9xx FPD-Link III drivers Vladimir Zapolskiy
2018-10-12 11:34 ` [PATCH 0/7] mfd/pinctrl: add initial support of TI DS90Ux9xx ICs Laurent Pinchart
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