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Message-Id: <20210806142527.29113-2-lakshmi.sowjanya.d@intel.com>
Date: Fri, 6 Aug 2021 19:55:26 +0530
From: lakshmi.sowjanya.d@...el.com
To: linus.walleij@...aro.org
Cc: linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
andriy.shevchenko@...ux.intel.com,
lakshmi.bai.raja.subramanian@...el.com, tamal.saha@...el.com,
lakshmi.sowjanya.d@...el.com
Subject: [PATCH v4 1/2] dt-bindings: pinctrl: Add bindings for Intel Keembay pinctrl driver
From: Lakshmi Sowjanya D <lakshmi.sowjanya.d@...el.com>
Add Device Tree bindings documentation for Intel Keem Bay
SoC's pin controller.
Add entry for INTEL Keem Bay pinctrl driver in MAINTAINERS file
Co-developed-by: Vineetha G. Jaya Kumaran <vineetha.g.jaya.kumaran@...el.com>
Signed-off-by: Vineetha G. Jaya Kumaran <vineetha.g.jaya.kumaran@...el.com>
Co-developed-by: Vijayakannan Ayyathurai <vijayakannan.ayyathurai@...el.com>
Signed-off-by: Vijayakannan Ayyathurai <vijayakannan.ayyathurai@...el.com>
Signed-off-by: Lakshmi Sowjanya D <lakshmi.sowjanya.d@...el.com>
Acked-by: Mark Gross <mgross@...ux.intel.com>
Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
---
.../pinctrl/intel,pinctrl-keembay.yaml | 135 ++++++++++++++++++
MAINTAINERS | 5 +
2 files changed, 140 insertions(+)
create mode 100644 Documentation/devicetree/bindings/pinctrl/intel,pinctrl-keembay.yaml
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 000000000000..5e99d79499b4
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/intel,pinctrl-keembay.yaml
@@ -0,0 +1,135 @@
+# 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 Device Tree Bindings
+
+maintainers:
+ - Lakshmi Sowjanya D <lakshmi.sowjanya.d@...el.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
+
+ 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>;
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index c9467d2839f5..4265079bf90a 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -14643,6 +14643,11 @@ S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/pinctrl/intel.git
F: drivers/pinctrl/intel/
+PIN CONTROLLER - KEEMBAY
+M: Lakshmi Sowjanya D <lakshmi.sowjanya.d@...el.com>
+S: Supported
+F: drivers/pinctrl/pinctrl-keembay*
+
PIN CONTROLLER - MEDIATEK
M: Sean Wang <sean.wang@...nel.org>
L: linux-mediatek@...ts.infradead.org (moderated for non-subscribers)
--
2.17.1
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