5113f6f70
 김현기
kernel add
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
IMG Synchronous Peripheral Flash Interface (SPFI) controller
Required properties:
- compatible: Must be "img,spfi".
- reg: Must contain the base address and length of the SPFI registers.
- interrupts: Must contain the SPFI interrupt.
- clocks: Must contain an entry for each entry in clock-names.
See ../clock/clock-bindings.txt for details.
- clock-names: Must include the following entries:
- spfi: SPI operating clock
- sys: SPI system interface clock
- dmas: Must contain an entry for each entry in dma-names.
See ../dma/dma.txt for details.
- dma-names: Must include the following entries:
- rx
- tx
- cs-gpios: Must specify the GPIOs used for chipselect lines.
- #address-cells: Must be 1.
- #size-cells: Must be 0.
Optional properties:
- img,supports-quad-mode: Should be set if the interface supports quad mode
SPI transfers.
- spfi-max-frequency: Maximum speed supported by the spfi block.
Example:
spi@18100f00 {
compatible = "img,spfi";
reg = <0x18100f00 0x100>;
interrupts = <GIC_SHARED 22 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&spi_clk>, <&system_clk>;
clock-names = "spfi", "sys";
dmas = <&mdc 9 0xffffffff 0>, <&mdc 10 0xffffffff 0>;
dma-names = "rx", "tx";
#address-cells = <1>;
#size-cells = <0>;
};
|