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