| Message ID | 1430314604-28680-1-git-send-email-fhunleth@troodon-software.com |
|---|---|
| State | Accepted |
| Headers | show |
On 04/29/2015 03:36 PM, Frank Hunleth wrote: > This changes the kernel used on the Raspberry Pi 2 from the 3.19 branch > back to the 3.18 branch. This provides a couple of advantages: > > 1. mmc0 works again. Floris Bos found out that this was due to using > the precompiled DTB files from rpi-firmware. These DTBs were built > using 3.18. > 2. The rpi-3.18.y branch is not regularly rebased like rpi-3.19.y > according to popcornmix. See > https://github.com/raspberrypi/linux/issues/915. > > Signed-off-by: Frank Hunleth <fhunleth@troodon-software.com> Can confirm buildroot's raspberrypi2_defconfig now works on a Pi 2 including mmc0, so patch works as intended. Reviewed-by: Floris Bos <bos@je-eigen-domein.nl> Did notice the rpi-firmware package itself could use some more work. Besides the binary device tree files always being installed thing, the sample config.txt in package/rpi-firmware/config.txt also contains values that are not that suitable for the Pi 2. E.g. the Pi 2 normally runs at 900 Mhz but is being downclocked to 700 by "arm_freq=700" there. Might be better not to have any low level settings like that there, just "kernel=zImage" Yours sincerely, Floris Bos
Dear Frank Hunleth, On Wed, 29 Apr 2015 09:36:43 -0400, Frank Hunleth wrote: > This changes the kernel used on the Raspberry Pi 2 from the 3.19 branch > back to the 3.18 branch. This provides a couple of advantages: > > 1. mmc0 works again. Floris Bos found out that this was due to using > the precompiled DTB files from rpi-firmware. These DTBs were built > using 3.18. > 2. The rpi-3.18.y branch is not regularly rebased like rpi-3.19.y > according to popcornmix. See > https://github.com/raspberrypi/linux/issues/915. > > Signed-off-by: Frank Hunleth <fhunleth@troodon-software.com> > --- > configs/raspberrypi2_defconfig | 8 ++++---- > 1 file changed, 4 insertions(+), 4 deletions(-) Applied both patches, thanks. What about the raspberrypi_defconfig ? Is there any reason to keep it around using the 3.12 kernel ? Or can we rename raspberrypi_dt_defconfig to raspberrypi_defconfig ? Thanks, Thomas
On Fri, May 1, 2015 at 4:25 AM, Thomas Petazzoni <thomas.petazzoni@free-electrons.com> wrote: > Dear Frank Hunleth, > > On Wed, 29 Apr 2015 09:36:43 -0400, Frank Hunleth wrote: >> This changes the kernel used on the Raspberry Pi 2 from the 3.19 branch >> back to the 3.18 branch. This provides a couple of advantages: >> >> 1. mmc0 works again. Floris Bos found out that this was due to using >> the precompiled DTB files from rpi-firmware. These DTBs were built >> using 3.18. >> 2. The rpi-3.18.y branch is not regularly rebased like rpi-3.19.y >> according to popcornmix. See >> https://github.com/raspberrypi/linux/issues/915. >> >> Signed-off-by: Frank Hunleth <fhunleth@troodon-software.com> >> --- >> configs/raspberrypi2_defconfig | 8 ++++---- >> 1 file changed, 4 insertions(+), 4 deletions(-) > > Applied both patches, thanks. > > What about the raspberrypi_defconfig ? Is there any reason to keep it > around using the 3.12 kernel ? Or can we rename > raspberrypi_dt_defconfig to raspberrypi_defconfig ? I've never used raspberrypi_defconfig, so I would be in favor of this. Regards, Frank
Hello, On Fri, 1 May 2015 06:20:28 -0400, Frank Hunleth wrote: > > What about the raspberrypi_defconfig ? Is there any reason to keep it > > around using the 3.12 kernel ? Or can we rename > > raspberrypi_dt_defconfig to raspberrypi_defconfig ? > > I've never used raspberrypi_defconfig, so I would be in favor of this. Yann, your thought? Thomas
diff --git a/configs/raspberrypi2_defconfig b/configs/raspberrypi2_defconfig index 6a48b26..5859749 100644 --- a/configs/raspberrypi2_defconfig +++ b/configs/raspberrypi2_defconfig @@ -7,15 +7,15 @@ BR2_TOOLCHAIN_BUILDROOT_CXX=y BR2_TARGET_GENERIC_GETTY_PORT="tty1" -# Lock to 3.19 headers as the RPi2 kernel is based off the 3.19 branch +# Lock to 3.18 headers as the RPi2 kernel is based off the 3.18 branch BR2_KERNEL_HEADERS_VERSION=y -BR2_DEFAULT_KERNEL_VERSION="3.19" -BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_3_19=y +BR2_DEFAULT_KERNEL_VERSION="3.18" +BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_3_18=y BR2_LINUX_KERNEL=y BR2_LINUX_KERNEL_CUSTOM_GIT=y BR2_LINUX_KERNEL_CUSTOM_REPO_URL="https://github.com/raspberrypi/linux.git" -BR2_LINUX_KERNEL_CUSTOM_REPO_VERSION="2c4959b772a35d9d459b0a92f39bb066e9a44d37" +BR2_LINUX_KERNEL_CUSTOM_REPO_VERSION="2747cc0bde4ca441691260fae1e34c9ef954ccae" BR2_LINUX_KERNEL_DEFCONFIG="bcm2709" BR2_LINUX_KERNEL_ZIMAGE=y
This changes the kernel used on the Raspberry Pi 2 from the 3.19 branch back to the 3.18 branch. This provides a couple of advantages: 1. mmc0 works again. Floris Bos found out that this was due to using the precompiled DTB files from rpi-firmware. These DTBs were built using 3.18. 2. The rpi-3.18.y branch is not regularly rebased like rpi-3.19.y according to popcornmix. See https://github.com/raspberrypi/linux/issues/915. Signed-off-by: Frank Hunleth <fhunleth@troodon-software.com> --- configs/raspberrypi2_defconfig | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)