On Sat, Nov 26, 2016 at 12:05 AM, Aurelien Jarno <[email protected]> wrote:
> On 2016-11-23 09:43, Michael Stapelberg wrote: > > Source: linux > > Severity: wishlist > > Tags: patch > > > > Thank you for your work on maintaining the Linux kernel in Debian, I > really > > appreciate it! > > > > I am interested in running Debian on the Raspberry Pi 3. > > > > As per https://github.com/anholt/linux/wiki/Raspberry-Pi-3, the > mainline Linux > > kernel in version 4.8 includes support for the Raspberry Pi 3, so we are > in > > pretty good shape already. > > > > However, when trying to boot linux-image-4.8.0-1-arm64 version 4.8.5-1, I > > noticed that the kernel can’t find any block devices (and hence no root > file > > system). This is because the bcm2835-sdhost MMC driver has not actually > made it > > into Linux 4.8; it is still under review: > > https://www.spinics.net/lists/arm-kernel/msg513433.html > > While this is correct, please note that the BCM2835 has two sdhost > controller, one that can be used for the wireless card and one for the > sdcard. The 4.8 kernel already has support for the other sdhost > controller, namely the iProc one. You can use this one for your root > filesystem as it is built in the Debian kernel. > > I guess you have a problem somewhere, maybe in the device tree that > causes the wrong SD controller to be used. I use the device tree that is > provided by the kernel: > Thanks for pointing this out! I must have indeed messed up the DTB while testing. I just installed linux-image-4.8.0-1-arm64 without any modifications and could indeed still boot successfully. So, this bug is no longer a blocker for Raspberry Pi 3 support, but would still be good to get fixed to enable us to make progress on the WiFi card support. > > | sdhci: sdhci@7e300000 { > | compatible = "brcm,bcm2835-sdhci"; > | reg = <0x7e300000 0x100>; > | interrupts = <2 30>; > | clocks = <&clocks BCM2835_CLOCK_EMMC>; > | status = "disabled"; > | }; > > This work since at least kernel 4.8.4-1~exp1. > > Aurelien > > -- > Aurelien Jarno GPG: 4096R/1DDD8C9B > [email protected] http://www.aurel32.net > -- Best regards, Michael
