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Heads up: new SD controller driver for Raspberry Pi in -current
Hi folks --
I've added a new driver for the Raspberry Pi's SD card controller to
-current. The BCM283x family includes two SD card controllers; one is an
Arasan SDHCI compliant controller (sdhc(4) driver) and another internal SD
HOST controller (the new sdhost(4) driver).
Up until now, we have been using the SDHCI controller to drive the SD
card slot. The SD HOST controller cannot do SDIO, so using it for the SD
card slot will allow us to free up the SDHCI controller for use with the
Wi-Fi chip on the Pi 3 and Zero W boards.
If you have any issues with the new driver, please report them to
port-arm@. Removing the "sdhost" driver from your kernel will revert to
the old behavior of using "sdhc" for SD cards.
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