Convert the ST NCI (ST21NFCB) NFC controller to DT schema format. Changes during bindings conversion: 1. Add a new required "reg" property for SPI binding, because SPI child devices use it as chip-select. 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@xxxxxxxxxxxxx> --- .../bindings/net/nfc/st,st-nci.yaml | 106 ++++++++++++++++++ .../bindings/net/nfc/st-nci-i2c.txt | 38 ------- .../bindings/net/nfc/st-nci-spi.txt | 36 ------ 3 files changed, 106 insertions(+), 74 deletions(-) create mode 100644 Documentation/devicetree/bindings/net/nfc/st,st-nci.yaml delete mode 100644 Documentation/devicetree/bindings/net/nfc/st-nci-i2c.txt delete mode 100644 Documentation/devicetree/bindings/net/nfc/st-nci-spi.txt diff --git a/Documentation/devicetree/bindings/net/nfc/st,st-nci.yaml b/Documentation/devicetree/bindings/net/nfc/st,st-nci.yaml new file mode 100644 index 000000000000..a6a1bc788d29 --- /dev/null +++ b/Documentation/devicetree/bindings/net/nfc/st,st-nci.yaml @@ -0,0 +1,106 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/net/nfc/st,st-nci.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: STMicroelectronics ST NCI NFC controller + +maintainers: + - Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxxxxx> + +properties: + compatible: + enum: + - st,st21nfcb-i2c + - st,st21nfcb-spi + - st,st21nfcc-i2c + + reset-gpios: + description: Output GPIO pin used for resetting the controller + + ese-present: + type: boolean + description: | + Specifies that an ese is physically connected to the controller + + interrupts: + maxItems: 1 + + reg: + maxItems: 1 + + spi-max-frequency: true + + uicc-present: + type: boolean + description: | + Specifies that the uicc swp signal can be physically connected to the + controller + +required: + - compatible + - interrupts + - reg + - reset-gpios + +if: + properties: + compatible: + contains: + enum: + - st,st21nfcb-i2c + - st,st21nfcc-i2c +then: + properties: + spi-max-frequency: false +else: + required: + - spi-max-frequency + +additionalProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + #include <dt-bindings/interrupt-controller/irq.h> + + i2c { + #address-cells = <1>; + #size-cells = <0>; + + nfc@8 { + compatible = "st,st21nfcb-i2c"; + reg = <0x08>; + + interrupt-parent = <&gpio5>; + interrupts = <2 IRQ_TYPE_LEVEL_HIGH>; + reset-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>; + + ese-present; + uicc-present; + }; + }; + + - | + #include <dt-bindings/gpio/gpio.h> + #include <dt-bindings/interrupt-controller/irq.h> + + spi { + #address-cells = <1>; + #size-cells = <0>; + + nfc@0 { + compatible = "st,st21nfcb-spi"; + reg = <0>; + + spi-max-frequency = <4000000>; + + interrupt-parent = <&gpio5>; + interrupts = <2 IRQ_TYPE_EDGE_RISING>; + reset-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>; + + ese-present; + uicc-present; + }; + }; diff --git a/Documentation/devicetree/bindings/net/nfc/st-nci-i2c.txt b/Documentation/devicetree/bindings/net/nfc/st-nci-i2c.txt deleted file mode 100644 index baa8f8133d19..000000000000 --- a/Documentation/devicetree/bindings/net/nfc/st-nci-i2c.txt +++ /dev/null @@ -1,38 +0,0 @@ -* STMicroelectronics SAS. ST NCI NFC Controller - -Required properties: -- compatible: Should be "st,st21nfcb-i2c" or "st,st21nfcc-i2c". -- clock-frequency: I²C work frequency. -- reg: address on the bus -- interrupts: GPIO interrupt to which the chip is connected -- reset-gpios: Output GPIO pin used to reset the ST21NFCB - -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 ST21NFCB on I2C2): - -&i2c2 { - - - st21nfcb: st21nfcb@8 { - - compatible = "st,st21nfcb-i2c"; - - reg = <0x08>; - clock-frequency = <400000>; - - interrupt-parent = <&gpio5>; - interrupts = <2 IRQ_TYPE_LEVEL_HIGH>; - - reset-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>; - - ese-present; - uicc-present; - }; -}; diff --git a/Documentation/devicetree/bindings/net/nfc/st-nci-spi.txt b/Documentation/devicetree/bindings/net/nfc/st-nci-spi.txt deleted file mode 100644 index d33343330b94..000000000000 --- a/Documentation/devicetree/bindings/net/nfc/st-nci-spi.txt +++ /dev/null @@ -1,36 +0,0 @@ -* STMicroelectronics SAS. ST NCI NFC Controller - -Required properties: -- compatible: Should be "st,st21nfcb-spi" -- spi-max-frequency: Maximum SPI frequency (<= 4000000). -- interrupts: GPIO interrupt to which the chip is connected -- reset-gpios: Output GPIO pin used to reset the ST21NFCB - -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 ST21NFCB on SPI4): - -&mcspi4 { - - - st21nfcb: st21nfcb@0 { - - compatible = "st,st21nfcb-spi"; - - clock-frequency = <4000000>; - - interrupt-parent = <&gpio5>; - interrupts = <2 IRQ_TYPE_EDGE_RISING>; - - reset-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>; - - ese-present; - uicc-present; - }; -}; -- 2.30.2
