mirror of
https://github.com/Qortal/Brooklyn.git
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67 lines
1.2 KiB
Plaintext
67 lines
1.2 KiB
Plaintext
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// Description: Overlay to enable NAND flash through
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// the secondary memory interface
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// Author: Luke Wren
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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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fragment@0 {
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target = <&smi>;
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__overlay__ {
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pinctrl-names = "default";
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pinctrl-0 = <&smi_pins>;
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status = "okay";
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};
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};
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fragment@1 {
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target = <&soc>;
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__overlay__ {
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nand: flash@0 {
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compatible = "brcm,bcm2835-smi-nand";
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smi_handle = <&smi>;
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#address-cells = <1>;
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#size-cells = <1>;
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status = "okay";
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partition@0 {
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label = "stage2";
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// 128k
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reg = <0 0x20000>;
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read-only;
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};
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partition@1 {
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label = "firmware";
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// 16M
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reg = <0x20000 0x1000000>;
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read-only;
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};
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partition@2 {
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label = "root";
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// 2G (will need to use 64 bit for >=4G)
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reg = <0x1020000 0x80000000>;
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};
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};
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};
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};
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fragment@2 {
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target = <&gpio>;
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__overlay__ {
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smi_pins: smi_pins {
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brcm,pins = <0 1 2 3 4 5 6 7 8 9 10 11
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12 13 14 15>;
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/* Alt 1: SMI */
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brcm,function = <5 5 5 5 5 5 5 5 5 5 5
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5 5 5 5 5>;
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/* /CS, /WE and /OE are pulled high, as they are
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generally active low signals */
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brcm,pull = <2 2 2 2 2 2 2 2 0 0 0 0 0 0 0 0>;
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};
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};
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};
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};
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