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Message-ID: <20210521223236.18324-6-grygorii.strashko@ti.com>
Date: Sat, 22 May 2021 01:32:36 +0300
From: Grygorii Strashko <grygorii.strashko@...com>
To: Linus Walleij <linus.walleij@...aro.org>,
Bartosz Golaszewski <bgolaszewski@...libre.com>,
Santosh Shilimkar <ssantosh@...nel.org>,
Tony Lindgren <tony@...mide.com>, <devicetree@...r.kernel.org>
CC: <linux-gpio@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<linux-omap@...r.kernel.org>,
Aswath Govindraju <a-govindraju@...com>,
Grygorii Strashko <grygorii.strashko@...com>
Subject: [PATCH 5/5] dt-bindings: gpio: omap: Convert to json-schema
Convert the OMAP GPIO Device Tree binding documentation to json-schema.
The GPIO hogs node names defined to end with a 'hog' suffix.
Signed-off-by: Grygorii Strashko <grygorii.strashko@...com>
---
.../devicetree/bindings/gpio/gpio-omap.txt | 45 --------
.../bindings/gpio/ti,omap-gpio.yaml | 108 ++++++++++++++++++
2 files changed, 108 insertions(+), 45 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/gpio/gpio-omap.txt
create mode 100644 Documentation/devicetree/bindings/gpio/ti,omap-gpio.yaml
diff --git a/Documentation/devicetree/bindings/gpio/gpio-omap.txt b/Documentation/devicetree/bindings/gpio/gpio-omap.txt
deleted file mode 100644
index e57b2cb28f6c..000000000000
--- a/Documentation/devicetree/bindings/gpio/gpio-omap.txt
+++ /dev/null
@@ -1,45 +0,0 @@
-OMAP GPIO controller bindings
-
-Required properties:
-- compatible:
- - "ti,omap2-gpio" for OMAP2 controllers
- - "ti,omap3-gpio" for OMAP3 controllers
- - "ti,omap4-gpio" for OMAP4 controllers
-- reg : Physical base address of the controller and length of memory mapped
- region.
-- gpio-controller : Marks the device node as a GPIO controller.
-- #gpio-cells : Should be two.
- - first cell is the pin number
- - second cell is used to specify optional parameters (unused)
-- interrupt-controller: Mark the device node as an interrupt controller.
-- #interrupt-cells : Should be 2.
- The first cell is the GPIO number.
- The second cell is used to specify flags:
- bits[3:0] trigger type and level flags:
- 1 = low-to-high edge triggered.
- 2 = high-to-low edge triggered.
- 4 = active high level-sensitive.
- 8 = active low level-sensitive.
-- interrupts : The interrupt the controller is rising as output when an
- interrupt occures
-
-OMAP specific properties:
-- ti,hwmods: Name of the hwmod associated to the GPIO:
- "gpio<X>", <X> being the 1-based instance number
- from the HW spec.
-- ti,gpio-always-on: Indicates if a GPIO bank is always powered and
- so will never lose its logic state.
-
-
-Example:
-
-gpio0: gpio@...07000 {
- compatible = "ti,omap4-gpio";
- reg = <0x44e07000 0x1000>;
- ti,hwmods = "gpio1";
- gpio-controller;
- #gpio-cells = <2>;
- interrupt-controller;
- #interrupt-cells = <2>;
- interrupts = <96>;
-};
diff --git a/Documentation/devicetree/bindings/gpio/ti,omap-gpio.yaml b/Documentation/devicetree/bindings/gpio/ti,omap-gpio.yaml
new file mode 100644
index 000000000000..ecefeb49f3f3
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/ti,omap-gpio.yaml
@@ -0,0 +1,108 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/gpio/ti,omap-gpio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: OMAP GPIO controller bindings
+
+maintainers:
+ - Grygorii Strashko <grygorii.strashko@...com>
+
+description: |
+ The general-purpose interface combines general-purpose input/output (GPIO) banks.
+ Each GPIO banks provides up to 32 dedicated general-purpose pins with input
+ and output capabilities; interrupt generation in active mode and wake-up
+ request generation in idle mode upon the detection of external events.
+
+properties:
+ compatible:
+ oneOf:
+ - enum:
+ - ti,omap2-gpio
+ - ti,omap3-gpio
+ - ti,omap4-gpio
+ - items:
+ - const: ti,am4372-gpio
+ - const: ti,omap4-gpio
+
+ reg:
+ maxItems: 1
+
+ gpio-controller: true
+
+ '#gpio-cells':
+ const: 2
+
+ interrupt-controller: true
+
+ '#interrupt-cells':
+ const: 2
+
+ interrupts:
+ maxItems: 1
+
+ gpio-ranges: true
+
+ gpio-line-names:
+ minItems: 1
+ maxItems: 32
+
+ ti,gpio-always-on:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description:
+ Indicates if a GPIO bank is always powered and will never lose its logic state.
+
+ ti,hwmods:
+ $ref: /schemas/types.yaml#/definitions/string
+ deprecated: true
+ description:
+ Name of the hwmod associated with the GPIO. Needed on some legacy OMAP
+ SoCs which have not been converted to the ti,sysc interconnect hierarachy.
+
+ ti,no-reset-on-init:
+ $ref: /schemas/types.yaml#/definitions/flag
+ deprecated: true
+ description:
+ Do not reset on init. Used with ti,hwmods on some legacy OMAP SoCs which
+ have not been converted to the ti,sysc interconnect hierarachy.
+
+patternProperties:
+ "^(.+-hog(-[0-9]+)?)$":
+ type: object
+
+ required:
+ - gpio-hog
+
+required:
+ - compatible
+ - reg
+ - gpio-controller
+ - "#gpio-cells"
+ - interrupt-controller
+ - "#interrupt-cells"
+ - interrupts
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+
+ gpio0: gpio@0 {
+ compatible = "ti,omap4-gpio";
+ reg = <0x0 0x1000>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ interrupts = <96>;
+ ti,gpio-always-on;
+
+ ls-buf-en-hog {
+ gpio-hog;
+ gpios = <10 GPIO_ACTIVE_HIGH>;
+ output-high;
+ line-name = "LS_BUF_EN";
+ };
+ };
--
2.17.1
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