[PATCH] dt-bindings: gpio: gpio-xilinx: Convert Xilinx axi gpio binding to YAML

From: Srinivas Neeli
Date: Tue Aug 09 2022 - 09:08:57 EST

Convert Xilinx axi gpio binding documentation to YAML.

Signed-off-by: Srinivas Neeli <srinivas.neeli@xxxxxxxxxx>
---
.../devicetree/bindings/gpio/gpio-xilinx.txt | 48 ------
.../bindings/gpio/xlnx,gpio-xilinx.yaml | 140 ++++++++++++++++++
2 files changed, 140 insertions(+), 48 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/gpio/gpio-xilinx.txt
create mode 100644 Documentation/devicetree/bindings/gpio/xlnx,gpio-xilinx.yaml

diff --git a/Documentation/devicetree/bindings/gpio/gpio-xilinx.txt b/Documentation/devicetree/bindings/gpio/gpio-xilinx.txt
deleted file mode 100644
index e506f30e1a95..000000000000
--- a/Documentation/devicetree/bindings/gpio/gpio-xilinx.txt
+++ /dev/null
@@ -1,48 +0,0 @@
-Xilinx plb/axi GPIO controller
-
-Dual channel GPIO controller with configurable number of pins
-(from 1 to 32 per channel). Every pin can be configured as
-input/output/tristate. Both channels share the same global IRQ but
-local interrupts can be enabled on channel basis.
-
-Required properties:
-- compatible : Should be "xlnx,xps-gpio-1.00.a"
-- reg : Address and length of the register set for the device
-- #gpio-cells : Should be two. The first cell is the pin number and the
- second cell is used to specify optional parameters (currently unused).
-- gpio-controller : Marks the device node as a GPIO controller.
-
-Optional properties:
-- clocks : Input clock specifier. Refer to common clock bindings.
-- interrupts : Interrupt mapping for GPIO IRQ.
-- xlnx,all-inputs : if n-th bit is setup, GPIO-n is input
-- xlnx,dout-default : if n-th bit is 1, GPIO-n default value is 1
-- xlnx,gpio-width : gpio width
-- xlnx,tri-default : if n-th bit is 1, GPIO-n is in tristate mode
-- xlnx,is-dual : if 1, controller also uses the second channel
-- xlnx,all-inputs-2 : as above but for the second channel
-- xlnx,dout-default-2 : as above but the second channel
-- xlnx,gpio2-width : as above but for the second channel
-- xlnx,tri-default-2 : as above but for the second channel
-
-
-Example:
-gpio: gpio@40000000 {
- #gpio-cells = <2>;
- compatible = "xlnx,xps-gpio-1.00.a";
- clocks = <&clkc25>;
- gpio-controller ;
- interrupt-parent = <&microblaze_0_intc>;
- interrupts = < 6 2 >;
- reg = < 0x40000000 0x10000 >;
- xlnx,all-inputs = <0x0>;
- xlnx,all-inputs-2 = <0x0>;
- xlnx,dout-default = <0x0>;
- xlnx,dout-default-2 = <0x0>;
- xlnx,gpio-width = <0x2>;
- xlnx,gpio2-width = <0x2>;
- xlnx,interrupt-present = <0x1>;
- xlnx,is-dual = <0x1>;
- xlnx,tri-default = <0xffffffff>;
- xlnx,tri-default-2 = <0xffffffff>;
-} ;
diff --git a/Documentation/devicetree/bindings/gpio/xlnx,gpio-xilinx.yaml b/Documentation/devicetree/bindings/gpio/xlnx,gpio-xilinx.yaml
new file mode 100644
index 000000000000..089e297aa530
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/xlnx,gpio-xilinx.yaml
@@ -0,0 +1,140 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/gpio/xlnx,gpio-xilinx.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Xilinx Axi GPIO controller Device Tree Bindings
+
+maintainers:
+ - Neeli Srinivas <srinivas.neeli@xxxxxxx>
+
+description:
+ The AXI GPIO design provides a general purpose input/output interface
+ to an AXI4-Lite interface. The AXI GPIO can be configured as either
+ a single or a dual-channel device. The width of each channel is
+ independently configurable. The channels can be configured to
+ generate an interrupt when a transition on any of their inputs occurs.
+
+properties:
+ compatible:
+ enum:
+ - xlnx,xps-gpio-1.00.a
+ reg:
+ maxItems: 1
+
+ "#gpio-cells":
+ const: 2
+
+ interrupts:
+ maxItems: 1
+
+ gpio-controller: true
+
+ gpio-line-names:
+ description: strings describing the names of each gpio line
+ minItems: 1
+ maxItems: 64
+
+ interrupt-controller: true
+
+ "#interrupt-cells":
+ const: 2
+
+ clocks:
+ maxItems: 1
+
+ interrupt-names: true
+
+ xlnx,all-inputs:
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+ description: This option sets this GPIO channel1 bits in input mode.
+
+ xlnx,all-inputs-2:
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+ description: This option sets this GPIO channel2 bits in input mode.
+
+ xlnx,all-outputs:
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+ description: This option sets this GPIO channel1 bits in output mode.
+
+ xlnx,all-outputs-2:
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+ description: This option sets this GPIO channel2 bits in output mode.
+
+ xlnx,dout-default:
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+ description: Sets the default value of all the enabled bits of
+ channel1. By default, this parameter is set to 0x0.
+
+ xlnx,dout-default-2:
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+ description: Sets the default value of all the enabled bits of
+ channel2. By default, this parameter is set to 0x0.
+
+ xlnx,gpio-width:
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+ description: The value defines the bit width of the GPIO channel1.
+ Its value can be from 1 to 32, and default value is 32.
+
+ xlnx,gpio2-width:
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+ description: The value defines the bit width of the GPIO channel2.
+ Its value can be from 1 to 32, and default value is 32.
+
+ xlnx,interrupt-present:
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+ description: This parameter enables interrupt control logic
+ and interrupt registers in GPIO module. By default it is 0.
+ xlnx,is-dual:
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+ description: This parameter enables a second GPIO channel (GPIO2).
+
+ xlnx,tri-default:
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+ description: This value configures the input or output mode
+ of each bit of GPIO channel1.
+
+ xlnx,tri-default-2:
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+ description: This value configures the input or output mode
+ of each bit of GPIO channel2.
+
+required:
+ - reg
+ - compatible
+ - gpio-controller
+ - "#gpio-cells"
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ gpio@e000a000 {
+ #gpio-cells = <2>;
+ #interrupt-cells = <0x2>;
+ clocks = <&zynqmp_clk 71>;
+ compatible = "xlnx,xps-gpio-1.00.a";
+ gpio-controller;
+ interrupt-controller;
+ interrupt-names = "ip2intc_irpt";
+ interrupt-parent = <&gic>;
+ interrupts = <0 89 4>;
+ reg = <0xa0020000 0x10000>;
+ xlnx,all-inputs = <0x0>;
+ xlnx,all-inputs-2 = <0x0>;
+ xlnx,all-outputs = <0x0>;
+ xlnx,all-outputs-2 = <0x0>;
+ xlnx,dout-default = <0x0>;
+ xlnx,dout-default-2 = <0x0>;
+ xlnx,gpio-width = <0x20>;
+ xlnx,gpio2-width = <0x20>;
+ xlnx,interrupt-present = <0x1>;
+ xlnx,is-dual = <0x1>;
+ xlnx,tri-default = <0xFFFFFFFF>;
+ xlnx,tri-default-2 = <0xFFFFFFFF>;
+ };
+
+...
--
2.17.1