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