From 2759a2568b354bb58e18d6cde535b6f83e02a9ac Mon Sep 17 00:00:00 2001
From: caternuson <caternuson@gmail.com>
Date: Fri, 5 Feb 2021 08:51:27 -0800
Subject: [PATCH] add comment

---
 src/adafruit_blinka/microcontroller/bcm283x/pin.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/adafruit_blinka/microcontroller/bcm283x/pin.py b/src/adafruit_blinka/microcontroller/bcm283x/pin.py
index 434a90b..5022366 100644
--- a/src/adafruit_blinka/microcontroller/bcm283x/pin.py
+++ b/src/adafruit_blinka/microcontroller/bcm283x/pin.py
@@ -147,6 +147,9 @@ spiPorts = (
 # ordered as uartId, txId, rxId
 uartPorts = ((1, TXD, RXD),)
 
+# These are the known hardware I2C ports / pins.
+# For software I2C ports created with the i2c-gpio overlay, see:
+#     https://github.com/adafruit/Adafruit_Python_Extended_Bus
 i2cPorts = (
     (1, SCL, SDA),
     (0, D1, D0),  # both pi 1 and pi 2 i2c ports!
-- 
2.49.0