bindings/mmc/sdhci-am654.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 # Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/
   3 %YAML 1.2
   4 ---
   5 $id: http://devicetree.org/schemas/mmc/sdhci-am654.yaml#
   6 $schema: http://devicetree.org/meta-schemas/core.yaml#
   7
   8 title: TI AM654 MMC Controller
   9
  10 maintainers:
  11   - Ulf Hansson <ulf.hansson@linaro.org>
  12
  13 allOf:
  14   - $ref: sdhci-common.yaml#
  15
  16 properties:
  17   compatible:
  18     oneOf:
  19       - enum:
  20           - ti,am62-sdhci
  21           - ti,am64-sdhci-4bit
  22           - ti,am64-sdhci-8bit
  23           - ti,am654-sdhci-5.1
  24           - ti,j721e-sdhci-4bit
  25           - ti,j721e-sdhci-8bit
  26       - items:
  27           - const: ti,j7200-sdhci-8bit
  28           - const: ti,j721e-sdhci-8bit
  29       - items:
  30           - const: ti,j7200-sdhci-4bit
  31           - const: ti,j721e-sdhci-4bit
  32
  33   reg:
  34     maxItems: 2
  35
  36   interrupts:
  37     maxItems: 1
  38
  39   power-domains:
  40     maxItems: 1
  41
  42   clocks:
  43     minItems: 1
  44     maxItems: 2
  45     description: Handles to input clocks
  46
  47   clock-names:
  48     minItems: 1
  49     items:
  50       - const: clk_ahb
  51       - const: clk_xin
  52
  53   dma-coherent:
  54     type: boolean
  55
  56   # PHY output tap delays:
  57   # Used to delay the data valid window and align it to the sampling clock.
  58   # Binding needs to be provided for each supported speed mode otherwise the
  59   # corresponding mode will be disabled.
  60
  61   ti,otap-del-sel-legacy:
  62     description: Output tap delay for SD/MMC legacy timing
  63     $ref: /schemas/types.yaml#/definitions/uint32
  64     minimum: 0
  65     maximum: 0xf
  66
  67   ti,otap-del-sel-mmc-hs:
  68     description: Output tap delay for MMC high speed timing
  69     $ref: /schemas/types.yaml#/definitions/uint32
  70     minimum: 0
  71     maximum: 0xf
  72
  73   ti,otap-del-sel-sd-hs:
  74     description: Output tap delay for SD high speed timing
  75     $ref: /schemas/types.yaml#/definitions/uint32
  76     minimum: 0
  77     maximum: 0xf
  78
  79   ti,otap-del-sel-sdr12:
  80     description: Output tap delay for SD UHS SDR12 timing
  81     $ref: /schemas/types.yaml#/definitions/uint32
  82     minimum: 0
  83     maximum: 0xf
  84
  85   ti,otap-del-sel-sdr25:
  86     description: Output tap delay for SD UHS SDR25 timing
  87     $ref: /schemas/types.yaml#/definitions/uint32
  88     minimum: 0
  89     maximum: 0xf
  90
  91   ti,otap-del-sel-sdr50:
  92     description: Output tap delay for SD UHS SDR50 timing
  93     $ref: /schemas/types.yaml#/definitions/uint32
  94     minimum: 0
  95     maximum: 0xf
  96
  97   ti,otap-del-sel-sdr104:
  98     description: Output tap delay for SD UHS SDR104 timing
  99     $ref: /schemas/types.yaml#/definitions/uint32
 100     minimum: 0
 101     maximum: 0xf
 102
 103   ti,otap-del-sel-ddr50:
 104     description: Output tap delay for SD UHS DDR50 timing
 105     $ref: /schemas/types.yaml#/definitions/uint32
 106     minimum: 0
 107     maximum: 0xf
 108
 109   ti,otap-del-sel-ddr52:
 110     description: Output tap delay for eMMC DDR52 timing
 111     $ref: /schemas/types.yaml#/definitions/uint32
 112     minimum: 0
 113     maximum: 0xf
 114
 115   ti,otap-del-sel-hs200:
 116     description: Output tap delay for eMMC HS200 timing
 117     $ref: /schemas/types.yaml#/definitions/uint32
 118     minimum: 0
 119     maximum: 0xf
 120
 121   ti,otap-del-sel-hs400:
 122     description: Output tap delay for eMMC HS400 timing
 123     $ref: /schemas/types.yaml#/definitions/uint32
 124     minimum: 0
 125     maximum: 0xf
 126
 127   # PHY input tap delays:
 128   # Used to delay the data valid window and align it to the sampling clock for
 129   # modes that don't support tuning
 130
 131   ti,itap-del-sel-legacy:
 132     description: Input tap delay for SD/MMC legacy timing
 133     $ref: /schemas/types.yaml#/definitions/uint32
 134     minimum: 0
 135     maximum: 0x1f
 136
 137   ti,itap-del-sel-mmc-hs:
 138     description: Input tap delay for MMC high speed timing
 139     $ref: /schemas/types.yaml#/definitions/uint32
 140     minimum: 0
 141     maximum: 0x1f
 142
 143   ti,itap-del-sel-sd-hs:
 144     description: Input tap delay for SD high speed timing
 145     $ref: /schemas/types.yaml#/definitions/uint32
 146     minimum: 0
 147     maximum: 0x1f
 148
 149   ti,itap-del-sel-sdr12:
 150     description: Input tap delay for SD UHS SDR12 timing
 151     $ref: /schemas/types.yaml#/definitions/uint32
 152     minimum: 0
 153     maximum: 0x1f
 154
 155   ti,itap-del-sel-sdr25:
 156     description: Input tap delay for SD UHS SDR25 timing
 157     $ref: /schemas/types.yaml#/definitions/uint32
 158     minimum: 0
 159     maximum: 0x1f
 160
 161   ti,itap-del-sel-ddr50:
 162     description: Input tap delay for MMC DDR50 timing
 163     $ref: /schemas/types.yaml#/definitions/uint32
 164     minimum: 0
 165     maximum: 0x1f
 166
 167   ti,itap-del-sel-ddr52:
 168     description: Input tap delay for MMC DDR52 timing
 169     $ref: /schemas/types.yaml#/definitions/uint32
 170     minimum: 0
 171     maximum: 0x1f
 172
 173   ti,trm-icp:
 174     description: DLL trim select
 175     $ref: /schemas/types.yaml#/definitions/uint32
 176     minimum: 0
 177     maximum: 0xf
 178
 179   ti,driver-strength-ohm:
 180     description: DLL drive strength in ohms
 181     $ref: /schemas/types.yaml#/definitions/uint32
 182     enum:
 183       - 33
 184       - 40
 185       - 50
 186       - 66
 187       - 100
 188
 189   ti,strobe-sel:
 190     description: strobe select delay for HS400 speed mode.
 191     $ref: /schemas/types.yaml#/definitions/uint32
 192
 193   ti,clkbuf-sel:
 194     description: Clock Delay Buffer Select
 195     $ref: /schemas/types.yaml#/definitions/uint32
 196
 197   ti,fails-without-test-cd:
 198     $ref: /schemas/types.yaml#/definitions/flag
 199     description:
 200       When present, indicates that the CD line is not connected
 201       and the controller is required to be forced into Test mode
 202       to set the TESTCD bit.
 203
 204 required:
 205   - compatible
 206   - reg
 207   - interrupts
 208   - clocks
 209   - clock-names
 210   - ti,otap-del-sel-legacy
 211
 212 unevaluatedProperties: false
 213
 214 examples:
 215   - |
 216     #include <dt-bindings/interrupt-controller/irq.h>
 217     #include <dt-bindings/interrupt-controller/arm-gic.h>
 218
 219     bus {
 220         #address-cells = <2>;
 221         #size-cells = <2>;
 222
 223         mmc0: mmc@4f80000 {
 224             compatible = "ti,am654-sdhci-5.1";
 225             reg = <0x0 0x4f80000 0x0 0x260>, <0x0 0x4f90000 0x0 0x134>;
 226             power-domains = <&k3_pds 47>;
 227             clocks = <&k3_clks 47 0>, <&k3_clks 47 1>;
 228             clock-names = "clk_ahb", "clk_xin";
 229             interrupts = <GIC_SPI 136 IRQ_TYPE_LEVEL_HIGH>;
 230             sdhci-caps-mask = <0x80000007 0x0>;
 231             mmc-ddr-1_8v;
 232             ti,otap-del-sel-legacy = <0x0>;
 233             ti,otap-del-sel-mmc-hs = <0x0>;
 234             ti,otap-del-sel-ddr52 = <0x5>;
 235             ti,otap-del-sel-hs200 = <0x5>;
 236             ti,otap-del-sel-hs400 = <0x0>;
 237             ti,itap-del-sel-legacy = <0x10>;
 238             ti,itap-del-sel-mmc-hs = <0xa>;
 239             ti,itap-del-sel-ddr52 = <0x3>;
 240             ti,trm-icp = <0x8>;
 241         };
 242     };