1 IMG Synchronous Peripheral Flash Interface (SP 1 IMG Synchronous Peripheral Flash Interface (SPFI) controller
2 2
3 Required properties: 3 Required properties:
4 - compatible: Must be "img,spfi". 4 - compatible: Must be "img,spfi".
5 - reg: Must contain the base address and lengt 5 - reg: Must contain the base address and length of the SPFI registers.
6 - interrupts: Must contain the SPFI interrupt. 6 - interrupts: Must contain the SPFI interrupt.
7 - clocks: Must contain an entry for each entry 7 - clocks: Must contain an entry for each entry in clock-names.
8 See ../clock/clock-bindings.txt for details. 8 See ../clock/clock-bindings.txt for details.
9 - clock-names: Must include the following entr 9 - clock-names: Must include the following entries:
10 - spfi: SPI operating clock 10 - spfi: SPI operating clock
11 - sys: SPI system interface clock 11 - sys: SPI system interface clock
12 - dmas: Must contain an entry for each entry i 12 - dmas: Must contain an entry for each entry in dma-names.
13 See ../dma/dma.txt for details. 13 See ../dma/dma.txt for details.
14 - dma-names: Must include the following entrie 14 - dma-names: Must include the following entries:
15 - rx 15 - rx
16 - tx 16 - tx
17 - cs-gpios: Must specify the GPIOs used for ch 17 - cs-gpios: Must specify the GPIOs used for chipselect lines.
18 - #address-cells: Must be 1. 18 - #address-cells: Must be 1.
19 - #size-cells: Must be 0. 19 - #size-cells: Must be 0.
20 20
21 Optional properties: 21 Optional properties:
22 - img,supports-quad-mode: Should be set if the 22 - img,supports-quad-mode: Should be set if the interface supports quad mode
23 SPI transfers. 23 SPI transfers.
24 - spfi-max-frequency: Maximum speed supported 24 - spfi-max-frequency: Maximum speed supported by the spfi block.
25 25
26 Example: 26 Example:
27 27
28 spi@18100f00 { 28 spi@18100f00 {
29 compatible = "img,spfi"; 29 compatible = "img,spfi";
30 reg = <0x18100f00 0x100>; 30 reg = <0x18100f00 0x100>;
31 interrupts = <GIC_SHARED 22 IRQ_TYPE_L 31 interrupts = <GIC_SHARED 22 IRQ_TYPE_LEVEL_HIGH>;
32 clocks = <&spi_clk>, <&system_clk>; 32 clocks = <&spi_clk>, <&system_clk>;
33 clock-names = "spfi", "sys"; 33 clock-names = "spfi", "sys";
34 dmas = <&mdc 9 0xffffffff 0>, <&mdc 10 34 dmas = <&mdc 9 0xffffffff 0>, <&mdc 10 0xffffffff 0>;
35 dma-names = "rx", "tx"; 35 dma-names = "rx", "tx";
36 36
37 #address-cells = <1>; 37 #address-cells = <1>;
38 #size-cells = <0>; 38 #size-cells = <0>;
39 }; 39 };
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