mirror of
https://github.com/torvalds/linux.git
synced 2024-12-24 20:01:55 +00:00
6ab4a35029
Update the PSPI NPCM binding document of the spi aliases use to define the spi ID number. Signed-off-by: Tomer Maimon <tmaimon77@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
44 lines
1.4 KiB
Plaintext
44 lines
1.4 KiB
Plaintext
Nuvoton NPCM Peripheral Serial Peripheral Interface(PSPI) controller driver
|
|
|
|
Nuvoton NPCM7xx SOC support two PSPI channels.
|
|
|
|
Required properties:
|
|
- compatible : "nuvoton,npcm750-pspi" for NPCM7XX BMC
|
|
- #address-cells : should be 1. see spi-bus.txt
|
|
- #size-cells : should be 0. see spi-bus.txt
|
|
- specifies physical base address and size of the register.
|
|
- interrupts : contain PSPI interrupt.
|
|
- clocks : phandle of PSPI reference clock.
|
|
- clock-names: Should be "clk_apb5".
|
|
- pinctrl-names : a pinctrl state named "default" must be defined.
|
|
- pinctrl-0 : phandle referencing pin configuration of the device.
|
|
- cs-gpios: Specifies the gpio pins to be used for chipselects.
|
|
See: Documentation/devicetree/bindings/spi/spi-bus.txt
|
|
|
|
Optional properties:
|
|
- clock-frequency : Input clock frequency to the PSPI block in Hz.
|
|
Default is 25000000 Hz.
|
|
|
|
Aliases:
|
|
- All the SPI controller nodes should be represented in the aliases node using
|
|
the following format 'spi{n}' withe the correct numbered in "aliases" node.
|
|
|
|
Example:
|
|
|
|
aliases {
|
|
spi0 = &spi0;
|
|
};
|
|
|
|
spi0: spi@f0200000 {
|
|
compatible = "nuvoton,npcm750-pspi";
|
|
reg = <0xf0200000 0x1000>;
|
|
pinctrl-names = "default";
|
|
pinctrl-0 = <&pspi1_pins>;
|
|
#address-cells = <1>;
|
|
#size-cells = <0>;
|
|
interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>;
|
|
clocks = <&clk NPCM7XX_CLK_APB5>;
|
|
clock-names = "clk_apb5";
|
|
cs-gpios = <&gpio6 11 GPIO_ACTIVE_LOW>;
|
|
};
|