[PATCH v14 2/4] dt-bindings: i2c: Add Maxim MAX735x/MAX736x variants

Patrick Rudolph
2023-05-01T09:16:06Z

Update the pca954x bindings to add support for the Maxim MAX735x/MAX736x
chips. The functionality will be provided by the existing pca954x driver.

For chips that are powered off by default add a regulator called vdd-supply.

Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
.../bindings/i2c/i2c-mux-pca954x.yaml | 22 +++++++++++++++++--
1 file changed, 20 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.yaml b/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.yaml
index e5c1070903ef..6fed6eae9c9b 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.yaml
+++ b/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.yaml
@@ -4,18 +4,29 @@
$id: http://devicetree.org/schemas/i2c/i2c-mux-pca954x.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

-title: NXP PCA954x I2C bus switch
+title: NXP PCA954x I2C and compatible bus switches

maintainers:
- Laurent Pinchart <laurent.pinchart@ideasonboard.com>

description:
- The binding supports NXP PCA954x and PCA984x I2C mux/switch devices.
+ The NXP PCA954x and compatible devices are I2C bus
+ multiplexer/switches that share the same functionality
+ and register layout.
+ The devices usually have 4 or 8 child buses, which are
+ attached to the parent bus by using the SMBus "Send Byte"
+ command.

properties:
compatible:
oneOf:
- enum:
+ - maxim,max7356
+ - maxim,max7357
+ - maxim,max7358
+ - maxim,max7367
+ - maxim,max7368
+ - maxim,max7369
- nxp,pca9540
- nxp,pca9542
- nxp,pca9543
@@ -56,6 +67,9 @@ properties:
description: if present, overrides i2c-mux-idle-disconnect
$ref: /schemas/mux/mux-controller.yaml#/properties/idle-state

+ vdd-supply:
+ description: A voltage regulator supplying power to the chip.
+
required:
- compatible
- reg
@@ -68,6 +82,8 @@ allOf:
compatible:
contains:
enum:
+ - maxim,max7367
+ - maxim,max7369
- nxp,pca9542
- nxp,pca9543
- nxp,pca9544
@@ -94,6 +110,8 @@ examples:
#size-cells = <0>;
reg = <0x74>;

+ vdd-supply = <&p3v3>;
+
interrupt-parent = <&ipic>;
interrupts = <17 IRQ_TYPE_LEVEL_LOW>;
interrupt-controller;
--
2.39.2