tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1* NXP Flex Serial Peripheral Interface (FSPI)
2
3Required properties:
4 - compatible : Should be "nxp,lx2160a-fspi"
5 - reg : First contains the register location and length,
6 Second contains the memory mapping address and length
7 - reg-names : Should contain the resource reg names:
8 - fspi_base: configuration register address space
9 - fspi_mmap: memory mapped address space
10 - interrupts : Should contain the interrupt for the device
11
12Required SPI slave node properties:
13 - reg : There are two buses (A and B) with two chip selects each.
14 This encodes to which bus and CS the flash is connected:
15 - <0>: Bus A, CS 0
16 - <1>: Bus A, CS 1
17 - <2>: Bus B, CS 0
18 - <3>: Bus B, CS 1
19
20Example showing the usage of two SPI NOR slave devices on bus A:
21
22fspi0: spi@20c0000 {
23 compatible = "nxp,lx2160a-fspi";
24 reg = <0x0 0x20c0000 0x0 0x10000>, <0x0 0x20000000 0x0 0x10000000>;
25 reg-names = "fspi_base", "fspi_mmap";
26 interrupts = <0 25 0x4>; /* Level high type */
27 clocks = <&clockgen 4 3>, <&clockgen 4 3>;
28 clock-names = "fspi_en", "fspi";
29
30 mt35xu512aba0: flash@0 {
31 reg = <0>;
32 ....
33 };
34
35 mt35xu512aba1: flash@1 {
36 reg = <1>;
37 ....
38 };
39};