The Arm PL050 "Keyboard/Mouse Interface" is an Arm system IP providing a PS/2 compatible serial interface. Add a simple DT schema binding, based on the TRM[1], the existing DTs and the Linux driver. [1] https://developer.arm.com/documentation/ddi0143/latest Signed-off-by: Andre Przywara <andre.przywara@xxxxxxx> --- .../devicetree/bindings/serio/amba-pl050.yaml | 67 +++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 Documentation/devicetree/bindings/serio/amba-pl050.yaml diff --git a/Documentation/devicetree/bindings/serio/amba-pl050.yaml b/Documentation/devicetree/bindings/serio/amba-pl050.yaml new file mode 100644 index 0000000000000..9732a84550098 --- /dev/null +++ b/Documentation/devicetree/bindings/serio/amba-pl050.yaml @@ -0,0 +1,67 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/serio/amba-pl050.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Arm Ltd. PrimeCell PL050 PS/2 Keyboard/Mouse Interface + +maintainers: + - Andre Przywara <andre.przywara@xxxxxxx> + +description: + The Arm PrimeCell PS2 Keyboard/Mouse Interface (KMI) is an AMBA compliant + peripheral that can be used to implement a keyboard or mouse interface that + is IBM PS2 or AT compatible. + +# We need a select here so we don't match all nodes with 'arm,primecell' +select: + properties: + compatible: + contains: + const: arm,pl050 + required: + - compatible + +properties: + compatible: + items: + - const: arm,pl050 + - const: arm,primecell + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + items: + - description: KMI reference clock, used to generate the bus timing + - description: APB register access clock + + clock-names: + items: + - const: KMIREFCLK + - const: apb_pclk + +required: + - compatible + - reg + - interrupts + - clocks + - clock-names + +additionalProperties: false + +examples: + - | + kmi@70000 { + compatible = "arm,pl050", "arm,primecell"; + reg = <0x070000 0x1000>; + interrupts = <8>; + clocks = <&mb_clk24mhz>, <&soc_smc50mhz>; + clock-names = "KMIREFCLK", "apb_pclk"; + }; + +... -- 2.25.1
