[PATCH v2 4/8] dt-bindings: nfc: st,st21nfca: convert to dtschema

Krzysztof Kozlowski
2021-10-11T07:40:08Z

Convert the ST ST21NFCA NFC controller to DT schema format.

Changes during bindings conversion:
1. Add a new required "interrupts" property, because it was missing in
the old bindings by mistake.
2. Drop the "clock-frequency" property during conversion because it is a
property of I2C bus controller, not I2C slave device. It was also
never used by the driver.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
---
.../bindings/net/nfc/st,st21nfca.yaml | 64 +++++++++++++++++++
.../devicetree/bindings/net/nfc/st21nfca.txt | 37 -----------
2 files changed, 64 insertions(+), 37 deletions(-)
create mode 100644 Documentation/devicetree/bindings/net/nfc/st,st21nfca.yaml
delete mode 100644 Documentation/devicetree/bindings/net/nfc/st21nfca.txt

diff --git a/Documentation/devicetree/bindings/net/nfc/st,st21nfca.yaml b/Documentation/devicetree/bindings/net/nfc/st,st21nfca.yaml
new file mode 100644
index 000000000000..4356eacde8aa
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/nfc/st,st21nfca.yaml
@@ -0,0 +1,64 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/nfc/st,st21nfca.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: STMicroelectronics SAS ST21NFCA NFC controller
+
+maintainers:
+ - Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
+
+properties:
+ compatible:
+ const: st,st21nfca-i2c
+
+ enable-gpios:
+ description: Output GPIO pin used for enabling/disabling the controller
+
+ ese-present:
+ type: boolean
+ description: |
+ Specifies that an ese is physically connected to the controller
+
+ interrupts:
+ maxItems: 1
+
+ reg:
+ maxItems: 1
+
+ uicc-present:
+ type: boolean
+ description: |
+ Specifies that the uicc swp signal can be physically connected to the
+ controller
+
+required:
+ - compatible
+ - enable-gpios
+ - interrupts
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ nfc@1 {
+ compatible = "st,st21nfca-i2c";
+ reg = <0x1>;
+
+ interrupt-parent = <&gpio5>;
+ interrupts = <2 IRQ_TYPE_LEVEL_LOW>;
+ enable-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>;
+
+ ese-present;
+ uicc-present;
+ };
+ };
diff --git a/Documentation/devicetree/bindings/net/nfc/st21nfca.txt b/Documentation/devicetree/bindings/net/nfc/st21nfca.txt
deleted file mode 100644
index b8bd90f80e12..000000000000
--- a/Documentation/devicetree/bindings/net/nfc/st21nfca.txt
+++ /dev/null
@@ -1,37 +0,0 @@
-* STMicroelectronics SAS. ST21NFCA NFC Controller
-
-Required properties:
-- compatible: Should be "st,st21nfca-i2c".
-- clock-frequency: I²C work frequency.
-- reg: address on the bus
-- enable-gpios: Output GPIO pin used for enabling/disabling the ST21NFCA
-
-Optional SoC Specific Properties:
-- pinctrl-names: Contains only one value - "default".
-- pintctrl-0: Specifies the pin control groups used for this controller.
-- ese-present: Specifies that an ese is physically connected to the nfc
-controller.
-- uicc-present: Specifies that the uicc swp signal can be physically
-connected to the nfc controller.
-
-Example (for ARM-based BeagleBoard xM with ST21NFCA on I2C2):
-
-&i2c2 {
-
-
- st21nfca: st21nfca@1 {
-
- compatible = "st,st21nfca-i2c";
-
- reg = <0x01>;
- clock-frequency = <400000>;
-
- interrupt-parent = <&gpio5>;
- interrupts = <2 IRQ_TYPE_LEVEL_LOW>;
-
- enable-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>;
-
- ese-present;
- uicc-present;
- };
-};
--
2.30.2