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Date: Thu, 16 Dec 2021 20:30:59 +0530
From: lakshmi.sowjanya.d@...el.com
To: linus.walleij@...aro.org
Cc: linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
bgolaszewski@...libre.com, linux-kernel@...r.kernel.org,
andriy.shevchenko@...ux.intel.com, tamal.saha@...el.com,
pandith.n@...el.com, kenchappa.demakkanavar@...el.com,
lakshmi.sowjanya.d@...el.com
Subject: [PATCH v3 1/2] dt-bindings: pinctrl: Add bindings for Intel Thunderbay pinctrl driver
From: Lakshmi Sowjanya D <lakshmi.sowjanya.d@...el.com>
Add Device Tree bindings documentation and an entry in MAINTAINERS file
for Intel Thunder Bay SoC's pin controller.
Signed-off-by: Lakshmi Sowjanya D <lakshmi.sowjanya.d@...el.com>
---
.../pinctrl/intel,pinctrl-thunderbay.yaml | 122 ++++++++++++++++++
MAINTAINERS | 5 +
2 files changed, 127 insertions(+)
create mode 100644 Documentation/devicetree/bindings/pinctrl/intel,pinctrl-thunderbay.yaml
diff --git a/Documentation/devicetree/bindings/pinctrl/intel,pinctrl-thunderbay.yaml b/Documentation/devicetree/bindings/pinctrl/intel,pinctrl-thunderbay.yaml
new file mode 100644
index 000000000000..528f0d8445dd
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/intel,pinctrl-thunderbay.yaml
@@ -0,0 +1,122 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/intel,pinctrl-thunderbay.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Intel Thunder Bay pin controller Device Tree Bindings
+
+maintainers:
+ - Lakshmi Sowjanya D <lakshmi.sowjanya.d@...el.com>
+
+description: |
+ Intel Thunder Bay SoC integrates a pin controller which enables control
+ of pin directions, input/output values and configuration
+ for a total of 67 pins.
+
+properties:
+ compatible:
+ const: intel,thunderbay-pinctrl
+
+ reg:
+ maxItems: 1
+
+ gpio-controller: true
+
+ '#gpio-cells':
+ const: 2
+
+ gpio-ranges:
+ maxItems: 1
+
+ interrupts:
+ description:
+ Specifies the interrupt lines to be used by the controller.
+ maxItems: 2
+
+ interrupt-controller: true
+
+ '#interrupt-cells':
+ const: 2
+
+patternProperties:
+ '^gpio@[0-9a-f]*$':
+ type: object
+
+ 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.
+ $ref: pincfg-node.yaml#
+
+ properties:
+ pins:
+ description: |
+ The name(s) of the pins to be configured in the child node.
+ Supported pin names are "GPIO0" up to "GPIO66".
+
+ bias-disable: true
+
+ bias-pull-down: true
+
+ bias-pull-up: true
+
+ drive-strength:
+ description: Drive strength for the pad.
+ enum: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]
+
+ bias-bus-hold:
+ type: boolean
+
+ input-schmitt-enable:
+ type: boolean
+
+ slew-rate:
+ description: GPIO slew rate control.
+ 0 - Slow
+ 1 - Fast
+ enum: [0, 1]
+
+ additionalProperties: false
+
+required:
+ - compatible
+ - reg
+ - gpio-controller
+ - '#gpio-cells'
+ - gpio-ranges
+ - interrupts
+ - interrupt-controller
+ - '#interrupt-cells'
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ // Example 1
+ pinctrl0: gpio@0 {
+ compatible = "intel,thunderbay-pinctrl";
+ reg = <0x600b0000 0x88>;
+ gpio-controller;
+ #gpio-cells = <0x2>;
+ gpio-ranges = <&pinctrl0 0 0 67>;
+ interrupts = <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
+ // Example 2
+ pinctrl1: gpio@1 {
+ compatible = "intel,thunderbay-pinctrl";
+ reg = <0x600c0000 0x88>;
+ gpio-controller;
+ #gpio-cells = <0x2>;
+ gpio-ranges = <&pinctrl1 0 0 53>;
+ interrupts = <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index 13f9a84a617e..db744ba259e4 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -15127,6 +15127,11 @@ L: linux-omap@...r.kernel.org
S: Maintained
F: drivers/pinctrl/pinctrl-single.c
+PIN CONTROLLER - THUNDERBAY
+M: Lakshmi Sowjanya D <lakshmi.sowjanya.d@...el.com>
+S: Supported
+F: drivers/pinctrl/pinctrl-thunderbay.c
+
PKTCDVD DRIVER
M: linux-block@...r.kernel.org
S: Orphan
--
2.17.1
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