allwinner,sun4i-a10-display-backend.yaml

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    1 # SPDX-License-Identifier: GPL-2.0
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/display/allwinner,sun4i-a10-display-backend.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Allwinner A10 Display Engine Backend Device Tree Bindings
    8 
    9 maintainers:
   10   - Chen-Yu Tsai <wens@csie.org>
   11   - Maxime Ripard <mripard@kernel.org>
   12 
   13 description: |
   14   The display engine backend exposes layers and sprites to the system.
   15 
   16 properties:
   17   compatible:
   18     enum:
   19       - allwinner,sun4i-a10-display-backend
   20       - allwinner,sun5i-a13-display-backend
   21       - allwinner,sun6i-a31-display-backend
   22       - allwinner,sun7i-a20-display-backend
   23       - allwinner,sun8i-a23-display-backend
   24       - allwinner,sun8i-a33-display-backend
   25       - allwinner,sun9i-a80-display-backend
   26 
   27   reg:
   28     minItems: 1
   29     items:
   30       - description: Display Backend registers
   31       - description: SAT registers
   32 
   33   reg-names:
   34     minItems: 1
   35     items:
   36       - const: be
   37       - const: sat
   38 
   39   interrupts:
   40     maxItems: 1
   41 
   42   clocks:
   43     minItems: 3
   44     items:
   45       - description: The backend interface clock
   46       - description: The backend module clock
   47       - description: The backend DRAM clock
   48       - description: The SAT clock
   49 
   50   clock-names:
   51     minItems: 3
   52     items:
   53       - const: ahb
   54       - const: mod
   55       - const: ram
   56       - const: sat
   57 
   58   resets:
   59     minItems: 1
   60     items:
   61       - description: The Backend reset line
   62       - description: The SAT reset line
   63 
   64   reset-names:
   65     minItems: 1
   66     items:
   67       - const: be
   68       - const: sat
   69 
   70   # FIXME: This should be made required eventually once every SoC will
   71   # have the MBUS declared.
   72   interconnects:
   73     maxItems: 1
   74 
   75   # FIXME: This should be made required eventually once every SoC will
   76   # have the MBUS declared.
   77   interconnect-names:
   78     const: dma-mem
   79 
   80   ports:
   81     $ref: /schemas/graph.yaml#/properties/ports
   82 
   83     properties:
   84       port@0:
   85         $ref: /schemas/graph.yaml#/properties/port
   86         description:
   87           Input endpoints of the controller.
   88 
   89       port@1:
   90         $ref: /schemas/graph.yaml#/properties/port
   91         description:
   92           Output endpoints of the controller.
   93 
   94     required:
   95       - port@0
   96       - port@1
   97 
   98 required:
   99   - compatible
  100   - reg
  101   - interrupts
  102   - clocks
  103   - clock-names
  104   - resets
  105   - ports
  106 
  107 additionalProperties: false
  108 
  109 if:
  110   properties:
  111     compatible:
  112       contains:
  113         const: allwinner,sun8i-a33-display-backend
  114 
  115 then:
  116   properties:
  117     reg:
  118       minItems: 2
  119 
  120     reg-names:
  121       minItems: 2
  122 
  123     clocks:
  124       minItems: 4
  125 
  126     clock-names:
  127       minItems: 4
  128 
  129     resets:
  130       minItems: 2
  131 
  132     reset-names:
  133       minItems: 2
  134 
  135   required:
  136     - reg-names
  137     - reset-names
  138 
  139 else:
  140   properties:
  141     reg:
  142       maxItems: 1
  143 
  144     reg-names:
  145       maxItems: 1
  146 
  147     clocks:
  148       maxItems: 3
  149 
  150     clock-names:
  151       maxItems: 3
  152 
  153     resets:
  154       maxItems: 1
  155 
  156     reset-names:
  157       maxItems: 1
  158 
  159 examples:
  160   - |
  161     /*
  162      * This comes from the clock/sun4i-a10-ccu.h and
  163      * reset/sun4i-a10-ccu.h headers, but we can't include them since
  164      * it would trigger a bunch of warnings for redefinitions of
  165      * symbols with the other example.
  166      */
  167 
  168     #define CLK_AHB_DE_BE0      42
  169     #define CLK_DRAM_DE_BE0     140
  170     #define CLK_DE_BE0          144
  171     #define RST_DE_BE0          5
  172 
  173     display-backend@1e60000 {
  174         compatible = "allwinner,sun4i-a10-display-backend";
  175         reg = <0x01e60000 0x10000>;
  176         interrupts = <47>;
  177         clocks = <&ccu CLK_AHB_DE_BE0>, <&ccu CLK_DE_BE0>,
  178                  <&ccu CLK_DRAM_DE_BE0>;
  179         clock-names = "ahb", "mod",
  180                       "ram";
  181         resets = <&ccu RST_DE_BE0>;
  182 
  183         ports {
  184             #address-cells = <1>;
  185             #size-cells = <0>;
  186 
  187             port@0 {
  188                 #address-cells = <1>;
  189                 #size-cells = <0>;
  190                 reg = <0>;
  191 
  192                 endpoint@0 {
  193                     reg = <0>;
  194                     remote-endpoint = <&fe0_out_be0>;
  195                 };
  196 
  197                 endpoint@1 {
  198                     reg = <1>;
  199                     remote-endpoint = <&fe1_out_be0>;
  200                 };
  201             };
  202 
  203             port@1 {
  204                 #address-cells = <1>;
  205                 #size-cells = <0>;
  206                 reg = <1>;
  207 
  208                 endpoint@0 {
  209                     reg = <0>;
  210                     remote-endpoint = <&tcon0_in_be0>;
  211                 };
  212 
  213                 endpoint@1 {
  214                     reg = <1>;
  215                     remote-endpoint = <&tcon1_in_be0>;
  216                 };
  217             };
  218         };
  219     };
  220 
  221   - |
  222     #include <dt-bindings/interrupt-controller/arm-gic.h>
  223 
  224     /*
  225      * This comes from the clock/sun8i-a23-a33-ccu.h and
  226      * reset/sun8i-a23-a33-ccu.h headers, but we can't include them
  227      * since it would trigger a bunch of warnings for redefinitions of
  228      * symbols with the other example.
  229      */
  230 
  231     #define CLK_BUS_DE_BE       40
  232     #define CLK_BUS_SAT         46
  233     #define CLK_DRAM_DE_BE      84
  234     #define CLK_DE_BE           85
  235     #define RST_BUS_DE_BE       21
  236     #define RST_BUS_SAT         27
  237 
  238     display-backend@1e60000 {
  239         compatible = "allwinner,sun8i-a33-display-backend";
  240         reg = <0x01e60000 0x10000>, <0x01e80000 0x1000>;
  241         reg-names = "be", "sat";
  242         interrupts = <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>;
  243         clocks = <&ccu CLK_BUS_DE_BE>, <&ccu CLK_DE_BE>,
  244                  <&ccu CLK_DRAM_DE_BE>, <&ccu CLK_BUS_SAT>;
  245         clock-names = "ahb", "mod",
  246                       "ram", "sat";
  247         resets = <&ccu RST_BUS_DE_BE>, <&ccu RST_BUS_SAT>;
  248         reset-names = "be", "sat";
  249 
  250         ports {
  251             #address-cells = <1>;
  252             #size-cells = <0>;
  253 
  254             port@0 {
  255                 reg = <0>;
  256 
  257                 endpoint {
  258                     remote-endpoint = <&fe0_out_be0>;
  259                 };
  260             };
  261 
  262             port@1 {
  263                 reg = <1>;
  264 
  265                 endpoint {
  266                     remote-endpoint = <&drc0_in_be0>;
  267                 };
  268             };
  269         };
  270     };
  271 
  272 ...

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/display/allwinner,sun4i-a10-display-backend.yaml

FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/display/allwinner,sun4i-a10-display-backend.yaml