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-rw-r--r--c/src/lib/libbsp/arm/atsam/README4
1 files changed, 4 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/arm/atsam/README b/c/src/lib/libbsp/arm/atsam/README
index 3df2c017cd..5f53d5f5e9 100644
--- a/c/src/lib/libbsp/arm/atsam/README
+++ b/c/src/lib/libbsp/arm/atsam/README
@@ -10,6 +10,10 @@ sams70q19, sams70q20, sams70q21, samv71j19, samv71j20, samv71j21, samv71n19,
samv71n20, samv71n21, samv71q19, samv71q20 and samv71q21. By default the BSP
uses the ATSAMV71Q21 chip. Not all variants are tested.
+Use --enable-sdram=XYZ to select the SDRAM variant where XYZ is one of
+is42s16100e-7bli and is42s16320f-7bl. Not all variants are tested with all
+controller and speed combinations.
+
Use BOARD_MAINOSC=XYZ to set the main oscillator frequency in Hz (default
12MHz).