The speed coefficient for Raspberry Pi 2 was probably calibrated
for a scaled down clock frequency.
To prevent JTAG/SWD overclocking, use the value corresponding
to the 'official' maximum CPU clock.
Change-Id: Iaff58b092198dce6d6552c9d31d6a3ba4aaaa2d5
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: https://review.openocd.org/c/openocd/+/7305
Tested-by: jenkins
Reviewed-by: Jonathan Bell <jonathan@raspberrypi.com>
bcm2835gpio peripheral_base 0x3F000000
# Transition delay calculation: SPEED_COEFF/khz - SPEED_OFFSET
-# These depend on system clock, calibrated for stock 700MHz
+# These depend on system clock, calibrated for scaling_max_freq 900MHz
# bcm2835gpio speed SPEED_COEFF SPEED_OFFSET
-bcm2835gpio speed_coeffs 146203 36
+bcm2835gpio speed_coeffs 225000 36
# Each of the JTAG lines need a gpio number set: tck tms tdi tdo
# Header pin numbers: 23 22 19 21
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