From: Georgi Vlaev <gvlaev@xxxxxxxxxxx>
Add device tree bindings for the Juniper I2CS MFD driver.
Signed-off-by: Georgi Vlaev <gvlaev@xxxxxxxxxxx>
[Ported from Juniper kernel]
Signed-off-by: Pantelis Antoniou <pantelis.antoniou@xxxxxxxxxxxx>
---
Documentation/devicetree/bindings/mfd/jnx-i2cs.txt | 68 ++++++++++++++++++++++
1 file changed, 68 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mfd/jnx-i2cs.txt
diff --git a/Documentation/devicetree/bindings/mfd/jnx-i2cs.txt b/Documentation/devicetree/bindings/mfd/jnx-i2cs.txt
new file mode 100644
index 0000000..0ec103b
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/jnx-i2cs.txt
@@ -0,0 +1,68 @@
+Device-Tree bindings for Juniper Networks I2CS FPGA MFD
+
+Required properties:
+- compatible - Must be one of:
+ "jnx,i2cs-rcb" (Routing Engine or Control Board FRUs)
+ "jnx,i2cs-fpc" (Flexible Port Concentrator FRUs)
+ "jnx,i2cs-sib" (Switching Interface Board FRUs)
+ "jnx,i2cs-fan" (Fan Tray FRUs)
+
+Optional properties:
+
+Depending on the FRU, the I2CS MFD has varied group of sub-devices:
+
+Device Description
+------ -----------
+jnx,i2cs-gpio : Virtual gpio mapping driver
+jnx,i2cs-fan-hwmon : hwmon driver for fan trays
+jnx,i2c-mux-i2cs : I2C Mux driver for FPC FRUs
+jnx,leds-i2cs : Led driver
+
+All these optional nodes are described in their respective binding
+documents.
+
+Example node:
+
+i2cs@54 {
+ compatible = "jnx,i2cs-fpc";
+ reg = <0x54>;
+ #address-cells = <0>;
+ #size-cells = <0>;
+
+ fpc2_mux {
+ compatible = "jnx,i2c-mux-i2cs";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ fpc2i2c0: i2c@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0>;
+ };
+ };
+
+ fpc2_gpiomap: gpio-jnx-i2cs {
+ compatible = "jnx,gpio-i2cs";
+ reg = <0x54>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ interrupt-controller;
+
+ /*
+ * Map bits [0-3] of reg 0x21 as gpio inputs, bits [4-7]
+ * as gpio outputs
+ */
+ i2c-gpio-map = <0x21 0x0f>;
+ };
+
+ leds-jnx-i2cs {
+ compatible = "jnx,leds-i2cs";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ sib8-active {
+ reg = <0>;
+ linux,default-trigger = "sib8-active";
+ };
+ };
+};
--
1.9.1
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