41 lines
1.1 KiB
Plaintext
41 lines
1.1 KiB
Plaintext
Device tree bindings for Allwinner DE2/3 bus
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The Allwinner A64 DE2 is on a special bus, which needs a SRAM region (SRAM C)
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to be claimed for enabling the access. The DE3 on Allwinner H6 is at the same
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situation, and the binding also applies.
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Required properties:
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- compatible: Should be one of:
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- "allwinner,sun50i-a64-de2"
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- "allwinner,sun50i-h6-de3", "allwinner,sun50i-a64-de2"
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- reg: A resource specifier for the register space
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- #address-cells: Must be set to 1
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- #size-cells: Must be set to 1
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- ranges: Must be set up to map the address space inside the
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DE2, for the sub-blocks of DE2.
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- allwinner,sram: the SRAM that needs to be claimed
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Example:
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de2@1000000 {
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compatible = "allwinner,sun50i-a64-de2";
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reg = <0x1000000 0x400000>;
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allwinner,sram = <&de2_sram 1>;
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#address-cells = <1>;
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#size-cells = <1>;
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ranges = <0 0x1000000 0x400000>;
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display_clocks: clock@0 {
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compatible = "allwinner,sun50i-a64-de2-clk";
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reg = <0x0 0x100000>;
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clocks = <&ccu CLK_DE>,
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<&ccu CLK_BUS_DE>;
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clock-names = "mod",
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"bus";
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resets = <&ccu RST_BUS_DE>;
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#clock-cells = <1>;
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#reset-cells = <1>;
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};
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};
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