target/linux/brcm2708/patches-4.14/950-0264-Add-overlay-for-JEDEC-SPI-NOR-flash.patch

   1 From 0222de711db11507773604084e20ad6d6960d30b Mon Sep 17 00:00:00 2001
   2 From: wavelet2 <a3d35232@btinternet.com>
   3 Date: Mon, 26 Mar 2018 21:05:10 +0100
   4 Subject: [PATCH 264/454] Add overlay for JEDEC SPI NOR flash
   5
   6 ---
   7  arch/arm/boot/dts/overlays/Makefile           |   1 +
   8  arch/arm/boot/dts/overlays/README             |   9 +
   9  .../dts/overlays/jedec-spi-nor-overlay.dts    | 309 ++++++++++++++++++
  10  3 files changed, 319 insertions(+)
  11  create mode 100644 arch/arm/boot/dts/overlays/jedec-spi-nor-overlay.dts
  12
  13 --- a/arch/arm/boot/dts/overlays/Makefile
  14 +++ b/arch/arm/boot/dts/overlays/Makefile
  15 @@ -55,6 +55,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
  16         iqaudio-dac.dtbo \
  17         iqaudio-dacplus.dtbo \
  18         iqaudio-digi-wm8804-audio.dtbo \
  19 +       jedec-spi-nor.dtbo \
  20         justboom-dac.dtbo \
  21         justboom-digi.dtbo \
  22         lirc-rpi.dtbo \
  23 --- a/arch/arm/boot/dts/overlays/README
  24 +++ b/arch/arm/boot/dts/overlays/README
  25 @@ -939,6 +939,15 @@ Params: card_name               Override
  26                                  dai stream name.
  27
  28
  29 +Name:   jedec-spi-nor
  30 +Info:   Adds support for JEDEC-compliant SPI NOR flash devices.  (Note: The
  31 +        "jedec,spi-nor" kernel driver was formerly known as "m25p80".)
  32 +Load:   dtoverlay=jedec-spi-nor,<param>=<val>
  33 +Params: flash-spi<n>-<m>        Enables flash device on SPI<n>, CS#<m>.
  34 +        flash-fastr-spi<n>-<m>  Enables flash device with fast read capability
  35 +                                on SPI<n>, CS#<m>.
  36 +
  37 +
  38  Name:   justboom-dac
  39  Info:   Configures the JustBoom DAC HAT, Amp HAT, DAC Zero and Amp Zero audio
  40          cards
  41 --- /dev/null
  42 +++ b/arch/arm/boot/dts/overlays/jedec-spi-nor-overlay.dts
  43 @@ -0,0 +1,309 @@
  44 +// Overlay for JEDEC SPI-NOR Flash Devices (aka m25p80)
  45 +
  46 +// dtparams:
  47 +//     flash-spi<n>-<m>        - Enables flash device on SPI<n>, CS#<m>.
  48 +//     flash-fastr-spi<n>-<m>  - Enables flash device with fast read capability on SPI<n>, CS#<m>.
  49 +//
  50 +// 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.
  51 +//
  52 +// Example: A single flash device with fast read capability on SPI0, CS#0:
  53 +// dtoverlay=jedec-spi-nor:flash-fastr-spi0-0
  54 +
  55 +/dts-v1/;
  56 +/plugin/;
  57 +
  58 +/ {
  59 +       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
  60 +
  61 +       // disable spi-dev on spi0.0
  62 +       fragment@0 {
  63 +               target = <&spidev0>;
  64 +               __dormant__ {
  65 +                       status = "disabled";
  66 +               };
  67 +       };
  68 +
  69 +       // disable spi-dev on spi0.1
  70 +       fragment@1 {
  71 +               target = <&spidev1>;
  72 +               __dormant__ {
  73 +                       status = "disabled";
  74 +               };
  75 +       };
  76 +
  77 +       // disable spi-dev on spi1.0
  78 +       fragment@2 {
  79 +               target-path = "spi1/spidev@0";
  80 +               __dormant__ {
  81 +                       status = "disabled";
  82 +               };
  83 +       };
  84 +
  85 +       // disable spi-dev on spi1.1
  86 +       fragment@3 {
  87 +               target-path = "spi1/spidev@1";
  88 +               __dormant__ {
  89 +                       status = "disabled";
  90 +               };
  91 +       };
  92 +
  93 +       // disable spi-dev on spi1.2
  94 +       fragment@4 {
  95 +               target-path = "spi1/spidev@2";
  96 +               __dormant__ {
  97 +                       status = "disabled";
  98 +               };
  99 +       };
 100 +
 101 +       // disable spi-dev on spi2.0
 102 +       fragment@5 {
 103 +               target-path = "spi2/spidev@0";
 104 +               __dormant__ {
 105 +                       status = "disabled";
 106 +               };
 107 +       };
 108 +
 109 +       // disable spi-dev on spi2.1
 110 +       fragment@6 {
 111 +               target-path = "spi2/spidev@1";
 112 +               __dormant__ {
 113 +                       status = "disabled";
 114 +               };
 115 +       };
 116 +
 117 +       // disable spi-dev on spi2.2
 118 +       fragment@7 {
 119 +               target-path = "spi2/spidev@2";
 120 +               __dormant__ {
 121 +                       status = "disabled";
 122 +               };
 123 +       };
 124 +
 125 +       // enable flash on spi0.0
 126 +       fragment@8 {
 127 +               target = <&spi0>;
 128 +               __dormant__ {
 129 +                       status = "okay";
 130 +                        #address-cells = <1>;
 131 +                        #size-cells = <0>;
 132 +                       spi_nor_00: spi_nor@0 {
 133 +                               #address-cells = <1>;
 134 +                               #size-cells = <1>;
 135 +                               compatible = "jedec,spi-nor";
 136 +                               reg = <0>;
 137 +                               spi-max-frequency = <500000>;
 138 +                       };
 139 +               };
 140 +       };
 141 +
 142 +       // enable flash on spi0.1
 143 +       fragment@9 {
 144 +               target = <&spi0>;
 145 +               __dormant__ {
 146 +                       status = "okay";
 147 +                        #address-cells = <1>;
 148 +                        #size-cells = <0>;
 149 +                       spi_nor_01: spi_nor@1 {
 150 +                               #address-cells = <1>;
 151 +                               #size-cells = <1>;
 152 +                               compatible = "jedec,spi-nor";
 153 +                               reg = <1>;
 154 +                               spi-max-frequency = <500000>;
 155 +                       };
 156 +               };
 157 +       };
 158 +
 159 +       // enable flash on spi1.0
 160 +       fragment@10 {
 161 +               target = <&spi1>;
 162 +               __dormant__ {
 163 +                       status = "okay";
 164 +                        #address-cells = <1>;
 165 +                        #size-cells = <0>;
 166 +                       spi_nor_10: spi_nor@0 {
 167 +                               #address-cells = <1>;
 168 +                               #size-cells = <1>;
 169 +                               compatible = "jedec,spi-nor";
 170 +                               reg = <0>;
 171 +                               spi-max-frequency = <500000>;
 172 +                       };
 173 +               };
 174 +       };
 175 +
 176 +       // enable flash on spi1.1
 177 +       fragment@11 {
 178 +               target = <&spi1>;
 179 +               __dormant__ {
 180 +                       status = "okay";
 181 +                        #address-cells = <1>;
 182 +                        #size-cells = <0>;
 183 +                       spi_nor_11: spi_nor@1 {
 184 +                               #address-cells = <1>;
 185 +                               #size-cells = <1>;
 186 +                               compatible = "jedec,spi-nor";
 187 +                               reg = <1>;
 188 +                               spi-max-frequency = <500000>;
 189 +                       };
 190 +               };
 191 +       };
 192 +
 193 +       // enable flash on spi1.2
 194 +       fragment@12 {
 195 +               target = <&spi1>;
 196 +               __dormant__ {
 197 +                       status = "okay";
 198 +                        #address-cells = <1>;
 199 +                        #size-cells = <0>;
 200 +                       spi_nor_12: spi_nor@2 {
 201 +                               #address-cells = <1>;
 202 +                               #size-cells = <1>;
 203 +                               compatible = "jedec,spi-nor";
 204 +                               reg = <2>;
 205 +                               spi-max-frequency = <500000>;
 206 +                       };
 207 +               };
 208 +       };
 209 +
 210 +       // enable flash on spi2.0
 211 +       fragment@13 {
 212 +               target = <&spi2>;
 213 +               __dormant__ {
 214 +                       status = "okay";
 215 +                        #address-cells = <1>;
 216 +                        #size-cells = <0>;
 217 +                       spi_nor_20: spi_nor@0 {
 218 +                               #address-cells = <1>;
 219 +                               #size-cells = <1>;
 220 +                               compatible = "jedec,spi-nor";
 221 +                               reg = <0>;
 222 +                               spi-max-frequency = <500000>;
 223 +                       };
 224 +               };
 225 +       };
 226 +
 227 +       // enable flash on spi2.1
 228 +       fragment@14 {
 229 +               target = <&spi2>;
 230 +               __dormant__ {
 231 +                       status = "okay";
 232 +                        #address-cells = <1>;
 233 +                        #size-cells = <0>;
 234 +                       spi_nor_21: spi_nor@1 {
 235 +                               #address-cells = <1>;
 236 +                               #size-cells = <1>;
 237 +                               compatible = "jedec,spi-nor";
 238 +                               reg = <1>;
 239 +                               spi-max-frequency = <500000>;
 240 +                       };
 241 +               };
 242 +       };
 243 +
 244 +       // enable flash on spi2.2
 245 +       fragment@15 {
 246 +               target = <&spi2>;
 247 +               __dormant__ {
 248 +                       status = "okay";
 249 +                        #address-cells = <1>;
 250 +                        #size-cells = <0>;
 251 +                       spi_nor_22: spi_nor@2 {
 252 +                               #address-cells = <1>;
 253 +                               #size-cells = <1>;
 254 +                               compatible = "jedec,spi-nor";
 255 +                               reg = <2>;
 256 +                               spi-max-frequency = <500000>;
 257 +                       };
 258 +               };
 259 +       };
 260 +
 261 +       // Enable fast read for device on spi0.0.
 262 +       // Use default active low interrupt signalling.
 263 +       fragment@16 {
 264 +               target = <&spi_nor_00>;
 265 +               __dormant__ {
 266 +                       m25p,fast-read;
 267 +               };
 268 +       };
 269 +
 270 +       // Enable fast read for device on spi0.1.
 271 +       // Use default active low interrupt signalling.
 272 +       fragment@17 {
 273 +               target = <&spi_nor_01>;
 274 +               __dormant__ {
 275 +                       m25p,fast-read;
 276 +               };
 277 +       };
 278 +
 279 +       // Enable fast read for device on spi1.0.
 280 +       // Use default active low interrupt signalling.
 281 +       fragment@18 {
 282 +               target = <&spi_nor_10>;
 283 +               __dormant__ {
 284 +                       m25p,fast-read;
 285 +               };
 286 +       };
 287 +
 288 +       // Enable fast read for device on spi1.1.
 289 +       // Use default active low interrupt signalling.
 290 +       fragment@19 {
 291 +               target = <&spi_nor_11>;
 292 +               __dormant__ {
 293 +                       m25p,fast-read;
 294 +               };
 295 +       };
 296 +
 297 +       // Enable fast read for device on spi1.2.
 298 +       // Use default active low interrupt signalling.
 299 +       fragment@20 {
 300 +               target = <&spi_nor_12>;
 301 +               __dormant__ {
 302 +                       m25p,fast-read;
 303 +               };
 304 +       };
 305 +
 306 +       // Enable fast read for device on spi2.0.
 307 +       // Use default active low interrupt signalling.
 308 +       fragment@21 {
 309 +               target = <&spi_nor_20>;
 310 +               __dormant__ {
 311 +                       m25p,fast-read;
 312 +               };
 313 +       };
 314 +
 315 +       // Enable fast read for device on spi2.1.
 316 +       // Use default active low interrupt signalling.
 317 +       fragment@22 {
 318 +               target = <&spi_nor_21>;
 319 +               __dormant__ {
 320 +                       m25p,fast-read;
 321 +               };
 322 +       };
 323 +
 324 +       // Enable fast read for device on spi2.2.
 325 +       // Use default active low interrupt signalling.
 326 +       fragment@23 {
 327 +               target = <&spi_nor_22>;
 328 +               __dormant__ {
 329 +                       m25p,fast-read;
 330 +               };
 331 +       };
 332 +
 333 +       __overrides__ {
 334 +               flash-spi0-0       = <0>,"+0+8";
 335 +               flash-spi0-1       = <0>,"+1+9";
 336 +               flash-spi1-0       = <0>,"+2+10";
 337 +               flash-spi1-1       = <0>,"+3+11";
 338 +               flash-spi1-2       = <0>,"+4+12";
 339 +               flash-spi2-0       = <0>,"+5+13";
 340 +               flash-spi2-1       = <0>,"+6+14";
 341 +               flash-spi2-2       = <0>,"+7+15";
 342 +               flash-fastr-spi0-0 = <0>,"+0+8+16";
 343 +               flash-fastr-spi0-1 = <0>,"+1+9+17";
 344 +               flash-fastr-spi1-0 = <0>,"+2+10+18";
 345 +               flash-fastr-spi1-1 = <0>,"+3+11+19";
 346 +               flash-fastr-spi1-2 = <0>,"+4+12+20";
 347 +               flash-fastr-spi2-0 = <0>,"+5+13+21";
 348 +               flash-fastr-spi2-1 = <0>,"+6+14+22";
 349 +               flash-fastr-spi2-2 = <0>,"+7+15+23";
 350 +       };
 351 +};
 352 +