From e0fcd180364bb6b7e21692def79153a80fab9260 Mon Sep 17 00:00:00 2001 From: David Michaeli Date: Sun, 4 Feb 2024 02:05:17 +0200 Subject: [PATCH] Update README.md --- README.md | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/README.md b/README.md index 44b8942..5eb23b6 100644 --- a/README.md +++ b/README.md @@ -17,6 +17,10 @@ CaribouLite is an affordable, educational, open-source SDR evaluation platform a +## NOTE: No Support for RPI-5 +Due to the architectural changes in RPI5 - the new I/O controller called "RP1" chip, CaribouLite is not supported on RPI5. We assume that the reason is the removal of the SMI interface altogether from the external interfaces by Broadcomm's team. +So, if you intend to use CaribouLite on RPI5 please don't - it won't work. Why was the SMI interface deprecated by Broadcomm (either from its hardware or kernel SW support)? Most probably due to the same reason this interface was not documented in the first place - no interest in supporting a high-speed external interface within the 40-pin connector. + # Getting Started & Installation Use the following steps to install the CaribouLite on your choice of RPI board 1. Mount the CaribouLite on a **un-powered** RPI device using the 40-pin header.