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Last active May 31, 2018 06:27
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rpi kernel notes
  • sdcard/mmc

for raspberrypi, the I/O speed should be the most important things

among those distros with rpi support, in this aspect the raspbian is best, alarm is close, alpine worst

quote from this issues: there are three sdcard drivers:

CONFIG_MMC_BCM2835 (upstream)

CONFIG_MMC_SDHCI_IPROC (upstream)

CONFIG_MMC_BCM2835_MMC (downstream)

seems better use just downstream driver for better performance,

CONFIG_MMC_BCM2835_MMC=y

  • wifi

still quote from this issues: The WiFi interface is connected via SDIO on mmc1 using GPIOs 34-39

to make mmc1 appears (so that wifi will works) need to enable

CONFIG_MMC_BCM2835_MMC=y

  • todo

random, watchdog, device mapper

block, brcm, bcm, 2835

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