* [PATCH v3 1/2] dt-binding: pinctrl: Add cypress,cy8c95x0
2022-08-16 5:49 [PATCH v3 0/2] pinctrl: Add Cypress cy8c95x0 Patrick Rudolph
@ 2022-08-16 5:49 ` Patrick Rudolph
2022-08-16 7:48 ` Krzysztof Kozlowski
2022-08-24 22:24 ` Linus Walleij
0 siblings, 2 replies; 4+ messages in thread
From: Patrick Rudolph @ 2022-08-16 5:49 UTC (permalink / raw)
To: Linus Walleij, Patrick Rudolph
Cc: Rob Herring, Krzysztof Kozlowski, linux-gpio, devicetree,
linux-kernel
Added device tree binding documentation for
Cypress CY8C95x0 I2C pin-controller.
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
---
.../bindings/pinctrl/cypress,cy8c95x0.yaml | 134 ++++++++++++++++++
1 file changed, 134 insertions(+)
create mode 100644 Documentation/devicetree/bindings/pinctrl/cypress,cy8c95x0.yaml
diff --git a/Documentation/devicetree/bindings/pinctrl/cypress,cy8c95x0.yaml b/Documentation/devicetree/bindings/pinctrl/cypress,cy8c95x0.yaml
new file mode 100644
index 000000000000..915cbbcc3555
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/cypress,cy8c95x0.yaml
@@ -0,0 +1,134 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/cypress,cy8c95x0.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Cypress CY8C95X0 I2C GPIO expander
+
+maintainers:
+ - Patrick Rudolph <patrick.rudolph@9elements.com>
+
+description: |
+ This supports the 20/40/60 pin Cypress CYC95x0 GPIO I2C expanders.
+ Pin function configuration is performed on a per-pin basis.
+
+properties:
+ compatible:
+ enum:
+ - cypress,cy8c9520
+ - cypress,cy8c9540
+ - cypress,cy8c9560
+
+ reg:
+ maxItems: 1
+
+ gpio-controller: true
+
+ '#gpio-cells':
+ description:
+ The first cell is the GPIO number and the second cell specifies GPIO
+ flags, as defined in <dt-bindings/gpio/gpio.h>.
+ const: 2
+
+ interrupts:
+ maxItems: 1
+
+ interrupt-controller: true
+
+ '#interrupt-cells':
+ const: 2
+
+ gpio-line-names: true
+
+ gpio-ranges:
+ maxItems: 1
+
+ gpio-reserved-ranges:
+ maxItems: 1
+
+ vdd-supply:
+ description:
+ Optional power supply.
+
+patternProperties:
+ '-pins$':
+ type: object
+ description:
+ Pinctrl node's client devices use subnodes for desired pin configuration.
+ Client device subnodes use below standard properties.
+ $ref: pincfg-node.yaml#
+
+ properties:
+ pins:
+ description:
+ List of gpio pins affected by the properties specified in this
+ subnode.
+ items:
+ pattern: '^gp([0-7][0-7])$'
+ minItems: 1
+ maxItems: 60
+
+ function:
+ description:
+ Specify the alternative function to be configured for the specified
+ pins.
+ enum: [ gpio, pwm ]
+
+ bias-pull-down: true
+
+ bias-pull-up: true
+
+ bias-disable: true
+
+ output-high: true
+
+ output-low: true
+
+ drive-push-pull: true
+
+ drive-open-drain: true
+
+ drive-open-source: true
+
+ required:
+ - pins
+ - function
+
+ additionalProperties: false
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - interrupt-controller
+ - '#interrupt-cells'
+ - gpio-controller
+ - '#gpio-cells'
+
+additionalProperties: false
+
+allOf:
+ - $ref: "pinctrl.yaml#"
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ pinctrl@20 {
+ compatible = "cypress,cy8c9520";
+ reg = <0x20>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ #interrupt-cells = <2>;
+ interrupts = <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-controller;
+ vdd-supply = <&p3v3>;
+ gpio-reserved-ranges = <5 1>;
+ };
+ };
--
2.37.1
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