boards: others: neorv32: default to reading clock frequency at boot
Default to reading the clock frequency from SYSINFO at boot time to make
the board compatible with a wider range of NEORV32 implementations.
Signed-off-by: Henrik Brix Andersen <henrik@brixandersen.dk>
diff --git a/boards/others/neorv32/doc/index.rst b/boards/others/neorv32/doc/index.rst
index 507b260..518f3fa 100644
--- a/boards/others/neorv32/doc/index.rst
+++ b/boards/others/neorv32/doc/index.rst
@@ -27,9 +27,10 @@
System Clock
============
-The default board configuration assumes a system clock of 18 MHz. The clock
-frequency can be overridden by changing the ``clock-frequency`` property of the
-``cpu0`` devicetree node.
+The default board configuration reads the system clock frequency from the NEORV32 SYSINFO module,
+which results in a small run-time overhead. If the clock frequency is known at build time, this
+behavior can be overridden by setting the ``clock-frequency`` property of the ``cpu0`` devicetree
+node.
CPU
===
diff --git a/boards/others/neorv32/neorv32.dts b/boards/others/neorv32/neorv32.dts
index 23958c5..e6f6893 100644
--- a/boards/others/neorv32/neorv32.dts
+++ b/boards/others/neorv32/neorv32.dts
@@ -7,7 +7,6 @@
/dts-v1/;
#include <neorv32.dtsi>
-#include <freq.h>
#include <mem.h>
/ {
@@ -56,7 +55,6 @@
&cpu0 {
riscv,isa = "rv32im_zicsr_zifencei";
- clock-frequency = <DT_FREQ_M(18)>;
};
&bootrom {
