arch/arm/boot/dts/overlays/jedec-spi-nor-overlay.dts

   1 // Overlay for JEDEC SPI-NOR Flash Devices (aka m25p80)
   2
   3 // dtparams:
   4 //     flash-spi<n>-<m>        - Enables flash device on SPI<n>, CS#<m>.
   5 //     flash-fastr-spi<n>-<m>  - Enables flash device with fast read capability on SPI<n>, CS#<m>.
   6 //
   7 // If devices are present on SPI1 or SPI2, those interfaces must be enabled with one of the spi1-1/2/3cs and/or spi2-1/2/3cs overlays.
   8 //
   9 // Example: A single flash device with fast read capability on SPI0, CS#0:
  10 // dtoverlay=jedec-spi-nor:flash-fastr-spi0-0
  11
  12 /dts-v1/;
  13 /plugin/;
  14
  15 / {
  16         compatible = "brcm,bcm2835";
  17
  18         // disable spi-dev on spi0.0
  19         fragment@0 {
  20                 target = <&spidev0>;
  21                 __dormant__ {
  22                         status = "disabled";
  23                 };
  24         };
  25
  26         // disable spi-dev on spi0.1
  27         fragment@1 {
  28                 target = <&spidev1>;
  29                 __dormant__ {
  30                         status = "disabled";
  31                 };
  32         };
  33
  34         // disable spi-dev on spi1.0
  35         fragment@2 {
  36                 target-path = "spi1/spidev@0";
  37                 __dormant__ {
  38                         status = "disabled";
  39                 };
  40         };
  41
  42         // disable spi-dev on spi1.1
  43         fragment@3 {
  44                 target-path = "spi1/spidev@1";
  45                 __dormant__ {
  46                         status = "disabled";
  47                 };
  48         };
  49
  50         // disable spi-dev on spi1.2
  51         fragment@4 {
  52                 target-path = "spi1/spidev@2";
  53                 __dormant__ {
  54                         status = "disabled";
  55                 };
  56         };
  57
  58         // disable spi-dev on spi2.0
  59         fragment@5 {
  60                 target-path = "spi2/spidev@0";
  61                 __dormant__ {
  62                         status = "disabled";
  63                 };
  64         };
  65
  66         // disable spi-dev on spi2.1
  67         fragment@6 {
  68                 target-path = "spi2/spidev@1";
  69                 __dormant__ {
  70                         status = "disabled";
  71                 };
  72         };
  73
  74         // disable spi-dev on spi2.2
  75         fragment@7 {
  76                 target-path = "spi2/spidev@2";
  77                 __dormant__ {
  78                         status = "disabled";
  79                 };
  80         };
  81
  82         // enable flash on spi0.0
  83         fragment@8 {
  84                 target = <&spi0>;
  85                 __dormant__ {
  86                         status = "okay";
  87                         #address-cells = <1>;
  88                         #size-cells = <0>;
  89                         spi_nor_00: spi_nor@0 {
  90                                 #address-cells = <1>;
  91                                 #size-cells = <1>;
  92                                 compatible = "jedec,spi-nor";
  93                                 reg = <0>;
  94                                 spi-max-frequency = <500000>;
  95                         };
  96                 };
  97         };
  98
  99         // enable flash on spi0.1
 100         fragment@9 {
 101                 target = <&spi0>;
 102                 __dormant__ {
 103                         status = "okay";
 104                         #address-cells = <1>;
 105                         #size-cells = <0>;
 106                         spi_nor_01: spi_nor@1 {
 107                                 #address-cells = <1>;
 108                                 #size-cells = <1>;
 109                                 compatible = "jedec,spi-nor";
 110                                 reg = <1>;
 111                                 spi-max-frequency = <500000>;
 112                         };
 113                 };
 114         };
 115
 116         // enable flash on spi1.0
 117         fragment@10 {
 118                 target = <&spi1>;
 119                 __dormant__ {
 120                         status = "okay";
 121                         #address-cells = <1>;
 122                         #size-cells = <0>;
 123                         spi_nor_10: spi_nor@0 {
 124                                 #address-cells = <1>;
 125                                 #size-cells = <1>;
 126                                 compatible = "jedec,spi-nor";
 127                                 reg = <0>;
 128                                 spi-max-frequency = <500000>;
 129                         };
 130                 };
 131         };
 132
 133         // enable flash on spi1.1
 134         fragment@11 {
 135                 target = <&spi1>;
 136                 __dormant__ {
 137                         status = "okay";
 138                         #address-cells = <1>;
 139                         #size-cells = <0>;
 140                         spi_nor_11: spi_nor@1 {
 141                                 #address-cells = <1>;
 142                                 #size-cells = <1>;
 143                                 compatible = "jedec,spi-nor";
 144                                 reg = <1>;
 145                                 spi-max-frequency = <500000>;
 146                         };
 147                 };
 148         };
 149
 150         // enable flash on spi1.2
 151         fragment@12 {
 152                 target = <&spi1>;
 153                 __dormant__ {
 154                         status = "okay";
 155                         #address-cells = <1>;
 156                         #size-cells = <0>;
 157                         spi_nor_12: spi_nor@2 {
 158                                 #address-cells = <1>;
 159                                 #size-cells = <1>;
 160                                 compatible = "jedec,spi-nor";
 161                                 reg = <2>;
 162                                 spi-max-frequency = <500000>;
 163                         };
 164                 };
 165         };
 166
 167         // enable flash on spi2.0
 168         fragment@13 {
 169                 target = <&spi2>;
 170                 __dormant__ {
 171                         status = "okay";
 172                         #address-cells = <1>;
 173                         #size-cells = <0>;
 174                         spi_nor_20: spi_nor@0 {
 175                                 #address-cells = <1>;
 176                                 #size-cells = <1>;
 177                                 compatible = "jedec,spi-nor";
 178                                 reg = <0>;
 179                                 spi-max-frequency = <500000>;
 180                         };
 181                 };
 182         };
 183
 184         // enable flash on spi2.1
 185         fragment@14 {
 186                 target = <&spi2>;
 187                 __dormant__ {
 188                         status = "okay";
 189                         #address-cells = <1>;
 190                         #size-cells = <0>;
 191                         spi_nor_21: spi_nor@1 {
 192                                 #address-cells = <1>;
 193                                 #size-cells = <1>;
 194                                 compatible = "jedec,spi-nor";
 195                                 reg = <1>;
 196                                 spi-max-frequency = <500000>;
 197                         };
 198                 };
 199         };
 200
 201         // enable flash on spi2.2
 202         fragment@15 {
 203                 target = <&spi2>;
 204                 __dormant__ {
 205                         status = "okay";
 206                         #address-cells = <1>;
 207                         #size-cells = <0>;
 208                         spi_nor_22: spi_nor@2 {
 209                                 #address-cells = <1>;
 210                                 #size-cells = <1>;
 211                                 compatible = "jedec,spi-nor";
 212                                 reg = <2>;
 213                                 spi-max-frequency = <500000>;
 214                         };
 215                 };
 216         };
 217
 218         // Enable fast read for device on spi0.0.
 219         // Use default active low interrupt signalling.
 220         fragment@16 {
 221                 target = <&spi_nor_00>;
 222                 __dormant__ {
 223                         m25p,fast-read;
 224                 };
 225         };
 226
 227         // Enable fast read for device on spi0.1.
 228         // Use default active low interrupt signalling.
 229         fragment@17 {
 230                 target = <&spi_nor_01>;
 231                 __dormant__ {
 232                         m25p,fast-read;
 233                 };
 234         };
 235
 236         // Enable fast read for device on spi1.0.
 237         // Use default active low interrupt signalling.
 238         fragment@18 {
 239                 target = <&spi_nor_10>;
 240                 __dormant__ {
 241                         m25p,fast-read;
 242                 };
 243         };
 244
 245         // Enable fast read for device on spi1.1.
 246         // Use default active low interrupt signalling.
 247         fragment@19 {
 248                 target = <&spi_nor_11>;
 249                 __dormant__ {
 250                         m25p,fast-read;
 251                 };
 252         };
 253
 254         // Enable fast read for device on spi1.2.
 255         // Use default active low interrupt signalling.
 256         fragment@20 {
 257                 target = <&spi_nor_12>;
 258                 __dormant__ {
 259                         m25p,fast-read;
 260                 };
 261         };
 262
 263         // Enable fast read for device on spi2.0.
 264         // Use default active low interrupt signalling.
 265         fragment@21 {
 266                 target = <&spi_nor_20>;
 267                 __dormant__ {
 268                         m25p,fast-read;
 269                 };
 270         };
 271
 272         // Enable fast read for device on spi2.1.
 273         // Use default active low interrupt signalling.
 274         fragment@22 {
 275                 target = <&spi_nor_21>;
 276                 __dormant__ {
 277                         m25p,fast-read;
 278                 };
 279         };
 280
 281         // Enable fast read for device on spi2.2.
 282         // Use default active low interrupt signalling.
 283         fragment@23 {
 284                 target = <&spi_nor_22>;
 285                 __dormant__ {
 286                         m25p,fast-read;
 287                 };
 288         };
 289
 290         __overrides__ {
 291                 flash-spi0-0       = <0>,"+0+8";
 292                 flash-spi0-1       = <0>,"+1+9";
 293                 flash-spi1-0       = <0>,"+2+10";
 294                 flash-spi1-1       = <0>,"+3+11";
 295                 flash-spi1-2       = <0>,"+4+12";
 296                 flash-spi2-0       = <0>,"+5+13";
 297                 flash-spi2-1       = <0>,"+6+14";
 298                 flash-spi2-2       = <0>,"+7+15";
 299                 flash-fastr-spi0-0 = <0>,"+0+8+16";
 300                 flash-fastr-spi0-1 = <0>,"+1+9+17";
 301                 flash-fastr-spi1-0 = <0>,"+2+10+18";
 302                 flash-fastr-spi1-1 = <0>,"+3+11+19";
 303                 flash-fastr-spi1-2 = <0>,"+4+12+20";
 304                 flash-fastr-spi2-0 = <0>,"+5+13+21";
 305                 flash-fastr-spi2-1 = <0>,"+6+14+22";
 306                 flash-fastr-spi2-2 = <0>,"+7+15+23";
 307         };
 308 };
 309