cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

amlogic,meson-vpu.yaml (4378B)

      1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
      2# Copyright 2019 BayLibre, SAS
      3%YAML 1.2
      4---
      5$id: "http://devicetree.org/schemas/display/amlogic,meson-vpu.yaml#"
      6$schema: "http://devicetree.org/meta-schemas/core.yaml#"
      7
      8title: Amlogic Meson Display Controller
      9
     10maintainers:
     11  - Neil Armstrong <narmstrong@baylibre.com>
     12
     13description: |
     14  The Amlogic Meson Display controller is composed of several components
     15  that are going to be documented below
     16
     17  DMC|---------------VPU (Video Processing Unit)----------------|------HHI------|
     18     | vd1   _______     _____________    _________________     |               |
     19  D  |-------|      |----|            |   |                |    |   HDMI PLL    |
     20  D  | vd2   | VIU  |    | Video Post |   | Video Encoders |<---|-----VCLK      |
     21  R  |-------|      |----| Processing |   |                |    |               |
     22     | osd2  |      |    |            |---| Enci ----------|----|-----VDAC------|
     23  R  |-------| CSC  |----| Scalers    |   | Encp ----------|----|----HDMI-TX----|
     24  A  | osd1  |      |    | Blenders   |   | Encl ----------|----|---------------|
     25  M  |-------|______|----|____________|   |________________|    |               |
     26  ___|__________________________________________________________|_______________|
     27
     28
     29  VIU: Video Input Unit
     30  ---------------------
     31
     32  The Video Input Unit is in charge of the pixel scanout from the DDR memory.
     33  It fetches the frames addresses, stride and parameters from the "Canvas" memory.
     34  This part is also in charge of the CSC (Colorspace Conversion).
     35  It can handle 2 OSD Planes and 2 Video Planes.
     36
     37  VPP: Video Post Processing
     38  --------------------------
     39
     40  The Video Post Processing is in charge of the scaling and blending of the
     41  various planes into a single pixel stream.
     42  There is a special "pre-blending" used by the video planes with a dedicated
     43  scaler and a "post-blending" to merge with the OSD Planes.
     44  The OSD planes also have a dedicated scaler for one of the OSD.
     45
     46  VENC: Video Encoders
     47  --------------------
     48
     49  The VENC is composed of the multiple pixel encoders
     50   - ENCI : Interlace Video encoder for CVBS and Interlace HDMI
     51   - ENCP : Progressive Video Encoder for HDMI
     52   - ENCL : LCD LVDS Encoder
     53  The VENC Unit gets a Pixel Clocks (VCLK) from a dedicated HDMI PLL and clock
     54  tree and provides the scanout clock to the VPP and VIU.
     55  The ENCI is connected to a single VDAC for Composite Output.
     56  The ENCI and ENCP are connected to an on-chip HDMI Transceiver.
     57
     58properties:
     59  compatible:
     60    oneOf:
     61      - items:
     62          - enum:
     63              - amlogic,meson-gxbb-vpu # GXBB (S905)
     64              - amlogic,meson-gxl-vpu # GXL (S905X, S905D)
     65              - amlogic,meson-gxm-vpu # GXM (S912)
     66          - const: amlogic,meson-gx-vpu
     67      - enum:
     68          - amlogic,meson-g12a-vpu # G12A (S905X2, S905Y2, S905D2)
     69
     70  reg:
     71    maxItems: 2
     72
     73  reg-names:
     74    items:
     75      - const: vpu
     76      - const: hhi
     77
     78  interrupts:
     79    maxItems: 1
     80
     81  amlogic,canvas:
     82    description: should point to a canvas provider node
     83    $ref: /schemas/types.yaml#/definitions/phandle
     84
     85  power-domains:
     86    maxItems: 1
     87    description: phandle to the associated power domain
     88
     89  port@0:
     90    $ref: /schemas/graph.yaml#/properties/port
     91    description:
     92      A port node pointing to the CVBS VDAC port node.
     93
     94  port@1:
     95    $ref: /schemas/graph.yaml#/properties/port
     96    description:
     97      A port node pointing to the HDMI-TX port node.
     98
     99  "#address-cells":
    100    const: 1
    101
    102  "#size-cells":
    103    const: 0
    104
    105required:
    106  - compatible
    107  - reg
    108  - interrupts
    109  - port@0
    110  - port@1
    111  - "#address-cells"
    112  - "#size-cells"
    113  - amlogic,canvas
    114
    115additionalProperties: false
    116
    117examples:
    118  - |
    119    vpu: vpu@d0100000 {
    120        compatible = "amlogic,meson-gxbb-vpu", "amlogic,meson-gx-vpu";
    121        reg = <0xd0100000 0x100000>, <0xc883c000 0x1000>;
    122        reg-names = "vpu", "hhi";
    123        interrupts = <3>;
    124        #address-cells = <1>;
    125        #size-cells = <0>;
    126        amlogic,canvas = <&canvas>;
    127
    128        /* CVBS VDAC output port */
    129        port@0 {
    130            reg = <0>;
    131
    132            cvbs_vdac_out: endpoint {
    133                remote-endpoint = <&tv_connector_in>;
    134            };
    135        };
    136
    137        /* HDMI TX output port */
    138        port@1 {
    139            reg = <1>;
    140
    141            hdmi_tx_out: endpoint {
    142                remote-endpoint = <&hdmi_tx_in>;
    143            };
    144        };
    145    };