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freifunkist-firmware/target/linux/brcm2708/patches-4.14/950-0224-overlays-i2c-gpio-...

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From 5fa522d6069313f96c93c255a20ca40e2d2a6c57 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Tue, 20 Feb 2018 10:47:27 +0000
Subject: [PATCH 224/454] overlays: i2c-gpio: Explain bus numbers in README
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
arch/arm/boot/dts/overlays/README | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -694,7 +694,11 @@ Params: i2c_gpio_sda GPIO use
(default "2" = ~100kHz)
bus Set to a unique, non-zero value if wanting
- multiple i2c-gpio busses (default "0")
+ multiple i2c-gpio busses. If set, will be used
+ as the preferred bus number (/dev/i2c-<n>). If
+ not set, the default value is 0, but the bus
+ number will be dynamically assigned - probably
+ 3.
Name: i2c-mux