1 * Nuvoton FLASH Interface Unit (FIU) SPI Controller
3 NPCM FIU supports single, dual and quad communication interface.
5 The NPCM7XX supports three FIU modules,
6 FIU0 and FIUx supports two chip selects,
7 FIU3 support four chip select.
10 - compatible : "nuvoton,npcm750-fiu" for the NPCM7XX BMC
11 - #address-cells : should be 1.
12 - #size-cells : should be 0.
13 - reg : the first contains the register location and length,
14 the second contains the memory mapping address and length
15 - reg-names: Should contain the reg names "control" and "memory"
16 - clocks : phandle of FIU reference clock.
18 Required properties in case the pins can be muxed:
19 - pinctrl-names : a pinctrl state named "default" must be defined.
20 - pinctrl-0 : phandle referencing pin configuration of the device.
23 - nuvoton,spix-mode: enable spix-mode for an expansion bus to an ASIC or CPLD.
26 - All the FIU controller nodes should be represented in the aliases node using
27 the following format 'fiu{n}' where n is a unique number for the alias.
29 fiu0 represent fiu 0 controller
30 fiu1 represent fiu 3 controller
31 fiu2 represent fiu x controller
35 compatible = "nuvoton,npcm750-fiu";
38 reg = <0xfb000000 0x1000>, <0x80000000 0x10000000>;
39 reg-names = "control", "memory";
40 clocks = <&clk NPCM7XX_CLK_AHB>;
41 pinctrl-names = "default";
42 pinctrl-0 = <&spi3_pins>;