--- /dev/null
+// Overlay for JEDEC SPI-NOR Flash Devices (aka m25p80)
+
+// dtparams:
+// flash-spi<n>-<m> - Enables flash device on SPI<n>, CS#<m>.
+// flash-fastr-spi<n>-<m> - Enables flash device with fast read capability on SPI<n>, CS#<m>.
+//
+// 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.
+//
+// Example: A single flash device with fast read capability on SPI0, CS#0:
+// dtoverlay=jedec-spi-nor:flash-fastr-spi0-0
+
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+ // disable spi-dev on spi0.0
+ fragment@0 {
+ target = <&spidev0>;
+ __dormant__ {
+ status = "disabled";
+ };
+ };
+
+ // disable spi-dev on spi0.1
+ fragment@1 {
+ target = <&spidev1>;
+ __dormant__ {
+ status = "disabled";
+ };
+ };
+
+ // disable spi-dev on spi1.0
+ fragment@2 {
+ target-path = "spi1/spidev@0";
+ __dormant__ {
+ status = "disabled";
+ };
+ };
+
+ // disable spi-dev on spi1.1
+ fragment@3 {
+ target-path = "spi1/spidev@1";
+ __dormant__ {
+ status = "disabled";
+ };
+ };
+
+ // disable spi-dev on spi1.2
+ fragment@4 {
+ target-path = "spi1/spidev@2";
+ __dormant__ {
+ status = "disabled";
+ };
+ };
+
+ // disable spi-dev on spi2.0
+ fragment@5 {
+ target-path = "spi2/spidev@0";
+ __dormant__ {
+ status = "disabled";
+ };
+ };
+
+ // disable spi-dev on spi2.1
+ fragment@6 {
+ target-path = "spi2/spidev@1";
+ __dormant__ {
+ status = "disabled";
+ };
+ };
+
+ // disable spi-dev on spi2.2
+ fragment@7 {
+ target-path = "spi2/spidev@2";
+ __dormant__ {
+ status = "disabled";
+ };
+ };
+
+ // enable flash on spi0.0
+ fragment@8 {
+ target = <&spi0>;
+ __dormant__ {
+ status = "okay";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ spi_nor_00: spi_nor@0 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "jedec,spi-nor";
+ reg = <0>;
+ spi-max-frequency = <500000>;
+ };
+ };
+ };
+
+ // enable flash on spi0.1
+ fragment@9 {
+ target = <&spi0>;
+ __dormant__ {
+ status = "okay";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ spi_nor_01: spi_nor@1 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "jedec,spi-nor";
+ reg = <1>;
+ spi-max-frequency = <500000>;
+ };
+ };
+ };
+
+ // enable flash on spi1.0
+ fragment@10 {
+ target = <&spi1>;
+ __dormant__ {
+ status = "okay";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ spi_nor_10: spi_nor@0 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "jedec,spi-nor";
+ reg = <0>;
+ spi-max-frequency = <500000>;
+ };
+ };
+ };
+
+ // enable flash on spi1.1
+ fragment@11 {
+ target = <&spi1>;
+ __dormant__ {
+ status = "okay";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ spi_nor_11: spi_nor@1 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "jedec,spi-nor";
+ reg = <1>;
+ spi-max-frequency = <500000>;
+ };
+ };
+ };
+
+ // enable flash on spi1.2
+ fragment@12 {
+ target = <&spi1>;
+ __dormant__ {
+ status = "okay";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ spi_nor_12: spi_nor@2 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "jedec,spi-nor";
+ reg = <2>;
+ spi-max-frequency = <500000>;
+ };
+ };
+ };
+
+ // enable flash on spi2.0
+ fragment@13 {
+ target = <&spi2>;
+ __dormant__ {
+ status = "okay";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ spi_nor_20: spi_nor@0 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "jedec,spi-nor";
+ reg = <0>;
+ spi-max-frequency = <500000>;
+ };
+ };
+ };
+
+ // enable flash on spi2.1
+ fragment@14 {
+ target = <&spi2>;
+ __dormant__ {
+ status = "okay";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ spi_nor_21: spi_nor@1 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "jedec,spi-nor";
+ reg = <1>;
+ spi-max-frequency = <500000>;
+ };
+ };
+ };
+
+ // enable flash on spi2.2
+ fragment@15 {
+ target = <&spi2>;
+ __dormant__ {
+ status = "okay";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ spi_nor_22: spi_nor@2 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "jedec,spi-nor";
+ reg = <2>;
+ spi-max-frequency = <500000>;
+ };
+ };
+ };
+
+ // Enable fast read for device on spi0.0.
+ // Use default active low interrupt signalling.
+ fragment@16 {
+ target = <&spi_nor_00>;
+ __dormant__ {
+ m25p,fast-read;
+ };
+ };
+
+ // Enable fast read for device on spi0.1.
+ // Use default active low interrupt signalling.
+ fragment@17 {
+ target = <&spi_nor_01>;
+ __dormant__ {
+ m25p,fast-read;
+ };
+ };
+
+ // Enable fast read for device on spi1.0.
+ // Use default active low interrupt signalling.
+ fragment@18 {
+ target = <&spi_nor_10>;
+ __dormant__ {
+ m25p,fast-read;
+ };
+ };
+
+ // Enable fast read for device on spi1.1.
+ // Use default active low interrupt signalling.
+ fragment@19 {
+ target = <&spi_nor_11>;
+ __dormant__ {
+ m25p,fast-read;
+ };
+ };
+
+ // Enable fast read for device on spi1.2.
+ // Use default active low interrupt signalling.
+ fragment@20 {
+ target = <&spi_nor_12>;
+ __dormant__ {
+ m25p,fast-read;
+ };
+ };
+
+ // Enable fast read for device on spi2.0.
+ // Use default active low interrupt signalling.
+ fragment@21 {
+ target = <&spi_nor_20>;
+ __dormant__ {
+ m25p,fast-read;
+ };
+ };
+
+ // Enable fast read for device on spi2.1.
+ // Use default active low interrupt signalling.
+ fragment@22 {
+ target = <&spi_nor_21>;
+ __dormant__ {
+ m25p,fast-read;
+ };
+ };
+
+ // Enable fast read for device on spi2.2.
+ // Use default active low interrupt signalling.
+ fragment@23 {
+ target = <&spi_nor_22>;
+ __dormant__ {
+ m25p,fast-read;
+ };
+ };
+
+ __overrides__ {
+ flash-spi0-0 = <0>,"+0+8";
+ flash-spi0-1 = <0>,"+1+9";
+ flash-spi1-0 = <0>,"+2+10";
+ flash-spi1-1 = <0>,"+3+11";
+ flash-spi1-2 = <0>,"+4+12";
+ flash-spi2-0 = <0>,"+5+13";
+ flash-spi2-1 = <0>,"+6+14";
+ flash-spi2-2 = <0>,"+7+15";
+ flash-fastr-spi0-0 = <0>,"+0+8+16";
+ flash-fastr-spi0-1 = <0>,"+1+9+17";
+ flash-fastr-spi1-0 = <0>,"+2+10+18";
+ flash-fastr-spi1-1 = <0>,"+3+11+19";
+ flash-fastr-spi1-2 = <0>,"+4+12+20";
+ flash-fastr-spi2-0 = <0>,"+5+13+21";
+ flash-fastr-spi2-1 = <0>,"+6+14+22";
+ flash-fastr-spi2-2 = <0>,"+7+15+23";
+ };
+};
+