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0a36afa823
In rpi-firmware 25e2b597ebfb2495eab4816a276758dcc6ea21f1, the GET_CLOCK_RATE mailbox property was changed to return the last value set by SET_CLOCK_RATE. https://github.com/raspberrypi/firmware/issues/1619#issuecomment-917025502 Due to this change in firmware behavior, bcm2835_get_mmc_clock now returns a clock rate of zero since we do not issue SET_CLOCK_RATE. This results in degraded MMC performance. SET_CLOCK_RATE fixes the clock to a specific value and disables scaling so is not an ideal solution. Instead, fallback to GET_MAX_CLOCK_RATE in bcm2835_get_mmc_clock if GET_CLOCK_RATE returns zero. Signed-off-by: Vincent Fazio <vfazio@xes-inc.com> Signed-off-by: Peter Robinson <pbrobinson@gmail.com> |
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base.h | ||
gpio.h | ||
mbox.h | ||
msg.h | ||
sdhci.h | ||
timer.h | ||
wdog.h |