From c8c6790926b6e6c5c51b485ab703c27771c8cdb6 Mon Sep 17 00:00:00 2001
From: mstroh76 <m.stroh76@gmail.com>
Date: Sat, 10 Jan 2026 17:15:10 +0100
Subject: [PATCH] adjust Pi4 speed, Kernel 6.12.47, Bookwork, 2026

---
 wiringPi/test/wiringpi_test7_bench.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/wiringPi/test/wiringpi_test7_bench.c b/wiringPi/test/wiringpi_test7_bench.c
index 9c0f221..ffdf367 100644
--- a/wiringPi/test/wiringpi_test7_bench.c
+++ b/wiringPi/test/wiringpi_test7_bench.c
@@ -83,7 +83,8 @@ int main (void) {
     case PI_MODEL_400:
     case PI_MODEL_CM4:
     case PI_MODEL_CM4S:
-      fExpectTimedigitalWrite = 0.020; //us
+      //fExpectTimedigitalWrite = 0.020; //us  - with kernel <6.12.47
+      fExpectTimedigitalWrite = 0.016; //us
       fExpectTimedigitalRead  = 0.038; //us
       fExpectTimepinMode      = 0.121; //us
       fWriteReadDelayFactor   = 1.86;