- 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