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Message-Id: <20210513210340.10466-1-olek2@wp.pl>
Date: Thu, 13 May 2021 23:03:39 +0200
From: Aleksander Jan Bajkowski <olek2@...pl>
To: linus.walleij@...aro.org, bgolaszewski@...libre.com,
robh+dt@...nel.org, john@...ozen.org, linux-gpio@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Aleksander Jan Bajkowski <olek2@...pl>
Subject: [PATCH 1/2] dt-bindings: gpio: stp: convert to json-schema
Convert the Lantiq STP Device Tree binding documentation to json-schema.
Add the missing pinctrl property.
Signed-off-by: Aleksander Jan Bajkowski <olek2@...pl>
---
.../bindings/gpio/gpio-stp-xway.txt | 42 -------
.../bindings/gpio/gpio-stp-xway.yaml | 117 ++++++++++++++++++
2 files changed, 117 insertions(+), 42 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/gpio/gpio-stp-xway.txt
create mode 100644 Documentation/devicetree/bindings/gpio/gpio-stp-xway.yaml
diff --git a/Documentation/devicetree/bindings/gpio/gpio-stp-xway.txt b/Documentation/devicetree/bindings/gpio/gpio-stp-xway.txt
deleted file mode 100644
index 78458adbf4b7..000000000000
--- a/Documentation/devicetree/bindings/gpio/gpio-stp-xway.txt
+++ /dev/null
@@ -1,42 +0,0 @@
-Lantiq SoC Serial To Parallel (STP) GPIO controller
-
-The Serial To Parallel (STP) is found on MIPS based Lantiq socs. It is a
-peripheral controller used to drive external shift register cascades. At most
-3 groups of 8 bits can be driven. The hardware is able to allow the DSL modem
-to drive the 2 LSBs of the cascade automatically.
-
-
-Required properties:
-- compatible : Should be "lantiq,gpio-stp-xway"
-- 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:
-- lantiq,shadow : The default value that we shall assume as already set on the
- shift register cascade.
-- lantiq,groups : Set the 3 bit mask to select which of the 3 groups are enabled
- in the shift register cascade.
-- lantiq,dsl : The dsl core can control the 2 LSBs of the gpio cascade. This 2 bit
- property can enable this feature.
-- lantiq,phy1 : The gphy1 core can control 3 bits of the gpio cascade.
-- lantiq,phy2 : The gphy2 core can control 3 bits of the gpio cascade.
-- lantiq,rising : use rising instead of falling edge for the shift register
-
-Example:
-
-gpio1: stp@...0bb0 {
- compatible = "lantiq,gpio-stp-xway";
- reg = <0xE100BB0 0x40>;
- #gpio-cells = <2>;
- gpio-controller;
-
- lantiq,shadow = <0xffff>;
- lantiq,groups = <0x7>;
- lantiq,dsl = <0x3>;
- lantiq,phy1 = <0x7>;
- lantiq,phy2 = <0x7>;
- /* lantiq,rising; */
-};
diff --git a/Documentation/devicetree/bindings/gpio/gpio-stp-xway.yaml b/Documentation/devicetree/bindings/gpio/gpio-stp-xway.yaml
new file mode 100644
index 000000000000..a36acc98898c
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/gpio-stp-xway.yaml
@@ -0,0 +1,117 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/gpio/gpio-stp-xway.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Lantiq SoC Serial To Parallel (STP) GPIO controller
+
+description: |
+ The Serial To Parallel (STP) is found on MIPS based Lantiq socs. It is a
+ peripheral controller used to drive external shift register cascades. At most
+ 3 groups of 8 bits can be driven. The hardware is able to allow the DSL modem
+ and Ethernet PHYs to drive some bytes of the cascade automatically.
+
+maintainers:
+ - John Crispin <john@...ozen.org>
+
+properties:
+ $nodename:
+ pattern: "^stp@[0-9a-f]+$"
+
+ compatible:
+ const: lantiq,gpio-stp-xway
+
+ reg:
+ description:
+ Address and length of the register set for the device.
+ maxItems: 1
+
+ gpio-controller:
+ description:
+ Marks the device node as a gpio controller.
+ type: boolean
+
+ "#gpio-cells":
+ description:
+ The first cell is the pin number and the second cell is used to specify
+ consumer flags.
+ const: 2
+
+ pinctrl-0:
+ description: Should specify pin control groups used for this controller.
+
+ pinctrl-names:
+ const: default
+
+ lantiq,shadow:
+ description:
+ The default value that we shall assume as already set on the
+ shift register cascade.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0x000000
+ maximum: 0xffffff
+
+ lantiq,groups:
+ description:
+ Set the 3 bit mask to select which of the 3 groups are enabled
+ in the shift register cascade.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0x0
+ maximum: 0x7
+
+ lantiq,dsl:
+ description:
+ The dsl core can control the 2 LSBs of the gpio cascade. This 2 bit
+ property can enable this feature.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0x0
+ maximum: 0x3
+
+ lantiq,phy1:
+ description:
+ The gphy1 core can control 3 bits of the gpio cascade. Available on
+ the xRX200, xRX300 and xRX330 family.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0x0
+ maximum: 0x7
+
+ lantiq,phy2:
+ description:
+ The gphy2 core can control 3 bits of the gpio cascade. Available on
+ the xRX200, xRX300 and xRX330 family.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0x0
+ maximum: 0x7
+
+ lantiq,rising:
+ description:
+ Use rising instead of falling edge for the shift register.
+ type: boolean
+
+required:
+ - compatible
+ - reg
+ - gpio-controller
+ - "#gpio-cells"
+
+additionalProperties: false
+
+examples:
+ - |
+ stp: stp@...0bb0 {
+ compatible = "lantiq,gpio-stp-xway";
+ reg = <0xE100BB0 0x40>;
+ #gpio-cells = <2>;
+ gpio-controller;
+
+ pinctrl-0 = <&stp_pins>;
+ pinctrl-names = "default";
+
+ lantiq,shadow = <0xffffff>;
+ lantiq,groups = <0x7>;
+ lantiq,dsl = <0x3>;
+ lantiq,phy1 = <0x7>;
+ lantiq,phy2 = <0x7>;
+ };
+...
--
2.30.2
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