summaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree/bindings/pinctrl/intel,pinctrl-keembay.yaml
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/devicetree/bindings/pinctrl/intel,pinctrl-keembay.yaml')
-rw-r--r--Documentation/devicetree/bindings/pinctrl/intel,pinctrl-keembay.yaml136
1 files changed, 136 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pinctrl/intel,pinctrl-keembay.yaml b/Documentation/devicetree/bindings/pinctrl/intel,pinctrl-keembay.yaml
new file mode 100644
index 000000000..005d95a9e
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/intel,pinctrl-keembay.yaml
@@ -0,0 +1,136 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/intel,pinctrl-keembay.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Intel Keem Bay pin controller
+
+maintainers:
+ - Lakshmi Sowjanya D <lakshmi.sowjanya.d@intel.com>
+
+description: |
+ Intel Keem Bay SoC integrates a pin controller which enables control
+ of pin directions, input/output values and configuration
+ for a total of 80 pins.
+
+properties:
+ compatible:
+ const: intel,keembay-pinctrl
+
+ reg:
+ maxItems: 2
+
+ gpio-controller: true
+
+ '#gpio-cells':
+ const: 2
+
+ ngpios:
+ description: The number of GPIOs exposed.
+ const: 80
+
+ interrupts:
+ description:
+ Specifies the interrupt lines to be used by the controller.
+ Each interrupt line is shared by upto 4 GPIO lines.
+ maxItems: 8
+
+ interrupt-controller: true
+
+ '#interrupt-cells':
+ const: 2
+
+patternProperties:
+ '^gpio@[0-9a-f]*$':
+ type: object
+ additionalProperties: false
+
+ description:
+ Child nodes can be specified to contain pin configuration information,
+ which can then be utilized by pinctrl client devices.
+ The following properties are supported.
+
+ properties:
+ pins:
+ description: |
+ The name(s) of the pins to be configured in the child node.
+ Supported pin names are "GPIO0" up to "GPIO79".
+
+ bias-disable: true
+
+ bias-pull-down: true
+
+ bias-pull-up: true
+
+ drive-strength:
+ description: IO pads drive strength in milli Ampere.
+ enum: [2, 4, 8, 12]
+
+ bias-bus-hold:
+ type: boolean
+
+ input-schmitt-enable:
+ type: boolean
+
+ slew-rate:
+ description: GPIO slew rate control.
+ 0 - Fast(~100MHz)
+ 1 - Slow(~50MHz)
+ enum: [0, 1]
+
+additionalProperties: false
+
+required:
+ - compatible
+ - reg
+ - gpio-controller
+ - ngpios
+ - '#gpio-cells'
+ - interrupts
+ - interrupt-controller
+ - '#interrupt-cells'
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ // Example 1
+ gpio@0 {
+ compatible = "intel,keembay-pinctrl";
+ reg = <0x600b0000 0x88>,
+ <0x600b0190 0x1ac>;
+ gpio-controller;
+ ngpios = <0x50>;
+ #gpio-cells = <0x2>;
+ interrupts = <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 97 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 99 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
+ // Example 2
+ gpio@1 {
+ compatible = "intel,keembay-pinctrl";
+ reg = <0x600c0000 0x88>,
+ <0x600c0190 0x1ac>;
+ gpio-controller;
+ ngpios = <0x50>;
+ #gpio-cells = <0x2>;
+ interrupts = <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 97 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 99 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };