1 Nuvoton NPCM Peripheral Serial Peripheral Inte 1 Nuvoton NPCM Peripheral Serial Peripheral Interface(PSPI) controller driver
2 2
3 Nuvoton NPCM7xx SOC support two PSPI channels. 3 Nuvoton NPCM7xx SOC support two PSPI channels.
4 4
5 Required properties: 5 Required properties:
6 - compatible : "nuvoton,npcm750-pspi" for Pol !! 6 - compatible : "nuvoton,npcm750-pspi" for NPCM7XX BMC
7 "nuvoton,npcm8 <<
8 - #address-cells : should be 1. see spi-bus.t 7 - #address-cells : should be 1. see spi-bus.txt
9 - #size-cells : should be 0. see spi-bus.txt 8 - #size-cells : should be 0. see spi-bus.txt
10 - specifies physical base address and size of 9 - specifies physical base address and size of the register.
11 - interrupts : contain PSPI interrupt. 10 - interrupts : contain PSPI interrupt.
12 - clocks : phandle of PSPI reference clock. 11 - clocks : phandle of PSPI reference clock.
13 - clock-names: Should be "clk_apb5". 12 - clock-names: Should be "clk_apb5".
14 - pinctrl-names : a pinctrl state named "defa 13 - pinctrl-names : a pinctrl state named "default" must be defined.
15 - pinctrl-0 : phandle referencing pin configu 14 - pinctrl-0 : phandle referencing pin configuration of the device.
16 - resets : phandle to the reset control for t <<
17 - cs-gpios: Specifies the gpio pins to be use 15 - cs-gpios: Specifies the gpio pins to be used for chipselects.
18 See: Documentation/devicetree/bind 16 See: Documentation/devicetree/bindings/spi/spi-bus.txt
19 17
20 Optional properties: 18 Optional properties:
21 - clock-frequency : Input clock frequency to t 19 - clock-frequency : Input clock frequency to the PSPI block in Hz.
22 Default is 25000000 Hz. 20 Default is 25000000 Hz.
23 21
>> 22 Aliases:
>> 23 - All the SPI controller nodes should be represented in the aliases node using
>> 24 the following format 'spi{n}' withe the correct numbered in "aliases" node.
>> 25
>> 26 Example:
>> 27
>> 28 aliases {
>> 29 spi0 = &spi0;
>> 30 };
>> 31
24 spi0: spi@f0200000 { 32 spi0: spi@f0200000 {
25 compatible = "nuvoton,npcm750-pspi"; 33 compatible = "nuvoton,npcm750-pspi";
26 reg = <0xf0200000 0x1000>; 34 reg = <0xf0200000 0x1000>;
27 pinctrl-names = "default"; 35 pinctrl-names = "default";
28 pinctrl-0 = <&pspi1_pins>; 36 pinctrl-0 = <&pspi1_pins>;
29 #address-cells = <1>; 37 #address-cells = <1>;
30 #size-cells = <0>; 38 #size-cells = <0>;
31 interrupts = <GIC_SPI 31 IRQ_TYPE_LEVE 39 interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>;
32 clocks = <&clk NPCM7XX_CLK_APB5>; 40 clocks = <&clk NPCM7XX_CLK_APB5>;
33 clock-names = "clk_apb5"; 41 clock-names = "clk_apb5";
34 resets = <&rstc NPCM7XX_RESET_IPSRST2 <<
35 cs-gpios = <&gpio6 11 GPIO_ACTIVE_LOW> 42 cs-gpios = <&gpio6 11 GPIO_ACTIVE_LOW>;
36 }; 43 };
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