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Subject[PATCH v2 1/4] dt-bindings: i2c: Add Maxim MAX735x/MAX736x variants
Date
Add the Maxim MAX735x/MAX736x as supported chip and give an example
how to use it. The functionality will be provided by the exisintg
pca954x driver.

Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
---
.../bindings/i2c/i2c-mux-max735x.yaml | 101 ++++++++++++++++++
1 file changed, 101 insertions(+)
create mode 100644 Documentation/devicetree/bindings/i2c/i2c-mux-max735x.yaml

diff --git a/Documentation/devicetree/bindings/i2c/i2c-mux-max735x.yaml b/Documentation/devicetree/bindings/i2c/i2c-mux-max735x.yaml
new file mode 100644
index 000000000000..dc924ec934ca
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/i2c-mux-max735x.yaml
@@ -0,0 +1,101 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/i2c/i2c-mux-max735x.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Maxim MAX735x/MAX736x I2C bus switch
+
+maintainers:
+ - Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+
+description:
+ The binding supports Maxim MAX735x and MAX736x I2C mux/switch devices.
+
+allOf:
+ - $ref: /schemas/i2c/i2c-mux.yaml#
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - maxim,max7367
+ - maxim,max7369
+ then:
+ properties:
+ interrupts: true
+
+ "#interrupt-cells":
+ const: 2
+
+ interrupt-controller: true
+
+properties:
+ compatible:
+ oneOf:
+ - enum:
+ - maxim,max7356
+ - maxim,max7357
+ - maxim,max7358
+ - maxim,max7367
+ - maxim,max7368
+ - maxim,max7369
+
+ reg:
+ maxItems: 1
+
+ reset-gpios:
+ maxItems: 1
+
+ i2c-mux-idle-disconnect:
+ type: boolean
+ description: Forces mux to disconnect all children in idle state. This is
+ necessary for example, if there are several multiplexers on the bus and
+ the devices behind them use same I2C addresses.
+
+ idle-state:
+ description: if present, overrides i2c-mux-idle-disconnect
+ $ref: /schemas/mux/mux-controller.yaml#/properties/idle-state
+
+required:
+ - compatible
+ - reg
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ i2c-mux@74 {
+ compatible = "maxim,max7357";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0x74>;
+
+ i2c@1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <1>;
+
+ eeprom@54 {
+ compatible = "atmel,24c08";
+ reg = <0x54>;
+ };
+ };
+
+ i2c@7 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <7>;
+
+ rtc@51 {
+ compatible = "nxp,pcf8563";
+ reg = <0x51>;
+ };
+ };
+ };
+ };
+...
--
2.33.1
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