cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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qcom,bam-dmux.yaml (2508B)

      1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
      2%YAML 1.2
      3---
      4$id: http://devicetree.org/schemas/net/qcom,bam-dmux.yaml#
      5$schema: http://devicetree.org/meta-schemas/core.yaml#
      6
      7title: Qualcomm BAM Data Multiplexer
      8
      9maintainers:
     10  - Stephan Gerhold <stephan@gerhold.net>
     11
     12description: |
     13  The BAM Data Multiplexer provides access to the network data channels
     14  of modems integrated into many older Qualcomm SoCs, e.g. Qualcomm MSM8916
     15  or MSM8974. It is built using a simple protocol layer on top of a DMA engine
     16  (Qualcomm BAM DMA) and bidirectional interrupts to coordinate power control.
     17
     18  Note that this schema does not directly describe a hardware block but rather
     19  a firmware convention that combines several other hardware blocks (such as the
     20  DMA engine). As such it is specific to a firmware version, not a particular
     21  SoC or hardware version.
     22
     23properties:
     24  compatible:
     25    const: qcom,bam-dmux
     26
     27  interrupts:
     28    description:
     29      Interrupts used by the modem to signal the AP.
     30      Both interrupts must be declared as IRQ_TYPE_EDGE_BOTH.
     31    items:
     32      - description: Power control
     33      - description: Power control acknowledgment
     34
     35  interrupt-names:
     36    items:
     37      - const: pc
     38      - const: pc-ack
     39
     40  qcom,smem-states:
     41    $ref: /schemas/types.yaml#/definitions/phandle-array
     42    description: State bits used by the AP to signal the modem.
     43    items:
     44      - description: Power control
     45      - description: Power control acknowledgment
     46
     47  qcom,smem-state-names:
     48    description: Names for the state bits used by the AP to signal the modem.
     49    items:
     50      - const: pc
     51      - const: pc-ack
     52
     53  dmas:
     54    items:
     55      - description: TX DMA channel phandle
     56      - description: RX DMA channel phandle
     57
     58  dma-names:
     59    items:
     60      - const: tx
     61      - const: rx
     62
     63required:
     64  - compatible
     65  - interrupts
     66  - interrupt-names
     67  - qcom,smem-states
     68  - qcom,smem-state-names
     69  - dmas
     70  - dma-names
     71
     72additionalProperties: false
     73
     74examples:
     75  - |
     76    #include <dt-bindings/interrupt-controller/irq.h>
     77
     78    mpss: remoteproc {
     79        bam-dmux {
     80            compatible = "qcom,bam-dmux";
     81
     82            interrupt-parent = <&modem_smsm>;
     83            interrupts = <1 IRQ_TYPE_EDGE_BOTH>, <11 IRQ_TYPE_EDGE_BOTH>;
     84            interrupt-names = "pc", "pc-ack";
     85
     86            qcom,smem-states = <&apps_smsm 1>, <&apps_smsm 11>;
     87            qcom,smem-state-names = "pc", "pc-ack";
     88
     89            dmas = <&bam_dmux_dma 4>, <&bam_dmux_dma 5>;
     90            dma-names = "tx", "rx";
     91        };
     92    };