qcom,nandc.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/mtd/qcom,nandc.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Qualcomm NAND controller
    8 
    9 maintainers:
   10   - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
   11 
   12 properties:
   13   compatible:
   14     enum:
   15       - qcom,ipq806x-nand
   16       - qcom,ipq4019-nand
   17       - qcom,ipq6018-nand
   18       - qcom,ipq8074-nand
   19       - qcom,sdx55-nand
   20 
   21   reg:
   22     maxItems: 1
   23 
   24   clocks:
   25     items:
   26       - description: Core Clock
   27       - description: Always ON Clock
   28 
   29   clock-names:
   30     items:
   31       - const: core
   32       - const: aon
   33 
   34   "#address-cells": true
   35   "#size-cells": true
   36 
   37 patternProperties:
   38   "^nand@[a-f0-9]$":
   39     type: object
   40     properties:
   41       nand-bus-width:
   42         const: 8
   43 
   44       nand-ecc-strength:
   45         enum: [1, 4, 8]
   46 
   47       nand-ecc-step-size:
   48         enum:
   49           - 512
   50 
   51 allOf:
   52   - $ref: "nand-controller.yaml#"
   53 
   54   - if:
   55       properties:
   56         compatible:
   57           contains:
   58             const: qcom,ipq806x-nand
   59     then:
   60       properties:
   61         dmas:
   62           items:
   63             - description: rxtx DMA channel
   64 
   65         dma-names:
   66           items:
   67             - const: rxtx
   68 
   69         qcom,cmd-crci:
   70           $ref: /schemas/types.yaml#/definitions/uint32
   71           description:
   72             Must contain the ADM command type CRCI block instance number
   73             specified for the NAND controller on the given platform
   74 
   75         qcom,data-crci:
   76           $ref: /schemas/types.yaml#/definitions/uint32
   77           description:
   78             Must contain the ADM data type CRCI block instance number
   79             specified for the NAND controller on the given platform
   80 
   81   - if:
   82       properties:
   83         compatible:
   84           contains:
   85             enum:
   86               - qcom,ipq4019-nand
   87               - qcom,ipq6018-nand
   88               - qcom,ipq8074-nand
   89               - qcom,sdx55-nand
   90 
   91     then:
   92       properties:
   93         dmas:
   94           items:
   95             - description: tx DMA channel
   96             - description: rx DMA channel
   97             - description: cmd DMA channel
   98 
   99         dma-names:
  100           items:
  101             - const: tx
  102             - const: rx
  103             - const: cmd
  104 
  105   - if:
  106       properties:
  107         compatible:
  108           contains:
  109             enum:
  110               - qcom,ipq806x-nand
  111 
  112     then:
  113       properties:
  114         qcom,boot-partitions:
  115           $ref: /schemas/types.yaml#/definitions/uint32-matrix
  116           items:
  117             items:
  118               - description: offset
  119               - description: size
  120           description:
  121             Boot partition use a different layout where the 4 bytes of spare
  122             data are not protected by ECC. Use this to declare these special
  123             partitions by defining first the offset and then the size.
  124 
  125             It's in the form of <offset1 size1 offset2 size2 offset3 ...>
  126             and should be declared in ascending order.
  127 
  128             Refer to the ipq8064 example on how to use this special binding.
  129 
  130 required:
  131   - compatible
  132   - reg
  133   - clocks
  134   - clock-names
  135 
  136 unevaluatedProperties: false
  137 
  138 examples:
  139   - |
  140     #include <dt-bindings/clock/qcom,gcc-ipq806x.h>
  141     nand-controller@1ac00000 {
  142       compatible = "qcom,ipq806x-nand";
  143       reg = <0x1ac00000 0x800>;
  144 
  145       clocks = <&gcc EBI2_CLK>,
  146                <&gcc EBI2_AON_CLK>;
  147       clock-names = "core", "aon";
  148 
  149       dmas = <&adm_dma 3>;
  150       dma-names = "rxtx";
  151       qcom,cmd-crci = <15>;
  152       qcom,data-crci = <3>;
  153 
  154       #address-cells = <1>;
  155       #size-cells = <0>;
  156 
  157       nand@0 {
  158         reg = <0>;
  159 
  160         nand-ecc-strength = <4>;
  161         nand-bus-width = <8>;
  162 
  163         qcom,boot-partitions = <0x0 0x58a0000>;
  164 
  165         partitions {
  166           compatible = "fixed-partitions";
  167           #address-cells = <1>;
  168           #size-cells = <1>;
  169 
  170           partition@0 {
  171             label = "boot-nand";
  172             reg = <0 0x58a0000>;
  173           };
  174 
  175           partition@58a0000 {
  176             label = "fs-nand";
  177             reg = <0x58a0000 0x4000000>;
  178           };
  179         };
  180       };
  181     };
  182 
  183     #include <dt-bindings/clock/qcom,gcc-ipq4019.h>
  184     nand-controller@79b0000 {
  185       compatible = "qcom,ipq4019-nand";
  186       reg = <0x79b0000 0x1000>;
  187 
  188       clocks = <&gcc GCC_QPIC_CLK>,
  189                <&gcc GCC_QPIC_AHB_CLK>;
  190       clock-names = "core", "aon";
  191 
  192       dmas = <&qpicbam 0>,
  193              <&qpicbam 1>,
  194              <&qpicbam 2>;
  195       dma-names = "tx", "rx", "cmd";
  196 
  197       #address-cells = <1>;
  198       #size-cells = <0>;
  199 
  200       nand@0 {
  201         reg = <0>;
  202         nand-ecc-strength = <4>;
  203         nand-bus-width = <8>;
  204 
  205         partitions {
  206           compatible = "fixed-partitions";
  207           #address-cells = <1>;
  208           #size-cells = <1>;
  209 
  210           partition@0 {
  211             label = "boot-nand";
  212             reg = <0 0x58a0000>;
  213           };
  214 
  215           partition@58a0000 {
  216             label = "fs-nand";
  217             reg = <0x58a0000 0x4000000>;
  218           };
  219         };
  220       };
  221     };
  222 
  223 ...

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