Commit 4c83146c authored by Nikunj Kela's avatar Nikunj Kela Committed by Greg Kroah-Hartman
Browse files

dt-bindings: serial: describe SA8255p 



SA8255p platform abstracts resources such as clocks, interconnect and
GPIO pins configuration in Firmware. SCMI power and perf protocols are
used to send request for resource configurations.

Add DT bindings for the QUP GENI UART controller on sa8255p platform.

The wakeup interrupt (IRQ) is treated as optional, as not all UART
instances have a wakeup-capable interrupt routed via the PDC.

Signed-off-by: default avatarNikunj Kela <quic_nkela@quicinc.com>
Co-developed-by: default avatarPraveen Talari <quic_ptalari@quicinc.com>
Signed-off-by: default avatarPraveen Talari <quic_ptalari@quicinc.com>
Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250721174532.14022-2-quic_ptalari@quicinc.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent a8d455db

Documentation/devicetree/bindings/serial/qcom,sa8255p-geni-uart.yaml

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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/serial/qcom,sa8255p-geni-uart.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#



title: Qualcomm Geni based QUP UART interface



maintainers:

  - Praveen Talari <quic_ptalari@quicinc.com>



allOf:

  - $ref: /schemas/serial/serial.yaml#



properties:

  compatible:

    enum:

      - qcom,sa8255p-geni-uart

      - qcom,sa8255p-geni-debug-uart



  reg:

    maxItems: 1



  interrupts:

    minItems: 1

    items:

      - description: UART core irq

      - description: Wakeup irq (RX GPIO)



  interrupt-names:

    description:

      The UART interrupt and optionally the RX in-band wakeup interrupt

      as not all UART instances have a wakeup-capable interrupt routed

      via the PDC.

    minItems: 1

    items:

      - const: uart

      - const: wakeup



  power-domains:

    minItems: 2

    maxItems: 2



  power-domain-names:

    items:

      - const: power

      - const: perf



required:

  - compatible

  - reg

  - interrupts

  - power-domains

  - power-domain-names



unevaluatedProperties: false



examples:

  - |

    #include <dt-bindings/interrupt-controller/arm-gic.h>



    serial@990000 {

        compatible = "qcom,sa8255p-geni-uart";

        reg = <0x990000 0x4000>;

        interrupts = <GIC_SPI 531 IRQ_TYPE_LEVEL_HIGH>;

        power-domains = <&scmi0_pd 0>, <&scmi0_dvfs 0>;

        power-domain-names = "power", "perf";

    };

...