linux-stable/drivers/staging/wilc1000/microchip,wilc1000,spi.txt
Eugen Hristev ae8779e198 staging: dt-bindings: wilc1000: add optional rtc_clk property
Add bindings for optional rtc clock pin.

Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Acked-by: Ajay Singh <ajay.kathat@microchip.com>
Link: https://lore.kernel.org/r/1568037993-4646-1-git-send-email-eugen.hristev@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-12 10:35:51 +01:00

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* Microchip WILC wireless SPI device
The wilc1000 chips can be connected via SPI. This document describes
the binding for the SPI connected module.
Required properties:
- compatible : Should be "microchip,wilc1000-spi"
- spi-max-frequency : Maximum SPI clocking speed of device in Hz
- reg : Chip select address of device
- irq-gpios : Connect to a host IRQ
Optional:
- rtc_clk : Clock connected on the rtc clock line. Must be assigned
a frequency with assigned-clocks property, and must be
connected to a clock provider.
Examples:
spi1: spi@fc018000 {
cs-gpios = <&pioB 21 0>;
status = "okay";
wilc_spi@0 {
compatible = "microchip,wilc1000-spi";
spi-max-frequency = <48000000>;
reg = <0>;
irq-gpios = <&pioC 27 0>;
clocks = <&pck1>;
clock-names = "rtc_clk";
assigned-clocks = <&pck1>;
assigned-clock-rates = <32768>;
status = "okay";
};
};