diff options
Diffstat (limited to 'dts/Bindings/bus/sun50i-de2-bus.txt')
| -rw-r--r-- | dts/Bindings/bus/sun50i-de2-bus.txt | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/dts/Bindings/bus/sun50i-de2-bus.txt b/dts/Bindings/bus/sun50i-de2-bus.txt new file mode 100644 index 0000000000..87dfb33fb3 --- /dev/null +++ b/dts/Bindings/bus/sun50i-de2-bus.txt @@ -0,0 +1,37 @@ +Device tree bindings for Allwinner A64 DE2 bus + +The Allwinner A64 DE2 is on a special bus, which needs a SRAM region (SRAM C) +to be claimed for enabling the access. + +Required properties: + + - compatible: Should contain "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>; + }; + }; |