After diffing the working dtb and the failing one (meson-gxl-s905d-phicomm-n1.dtb from compiling the kernel by hand), the issue was found to be the incorrectly high max-frequency specified in meson-gx-p23x-q20x.dtsi: mmc@7400Continue reading
Yes it’s the patch metioned in [v2,0/6] ARM64: meson: GXBaby (S905) and Vega S95 enablement. You might also would like to take a look at how did I build DebianContinue reading
Phicomm N1 uses BCM4345/6. The driver for that chip should come with kernel and needs no extra steps. It’s the firmware that is missing. Hence the firmware should be installedContinue reading
Cross build Debian 9 for N1 This is what the box finally looks like: $ ssh root@1.1.1.2 Linux n1-box 4.20.0 #2 SMP PREEMPT Mon Dec 31 12:00:00 UTC 2018 aarch64Continue reading
Update: If you really care about the number of files in /boot, I suggest you read this post, which will allow you to remove emmc_autoscript as well. Only the followingContinue reading
The corresponding memory region was shrinked in DTB for 3.1x by this patch, and I changed the dtb I’m using accordingly. — a.dts 2018-01-01 00:00:00.000000000 +0000 +++ b.dts 2018-01-01 00:00:00.000000000Continue reading
fw_printenv / fw_setenv on Armbian 5.6x does not work out of box: # fw_printenv Cannot parse config file ‘/etc/fw_env.config’: No such file or directory To solve this issue, put theContinue reading
It looks that u-boot does not make the whole memory region visible to Linux kernel on my N1 box: # hexdump -C /sys/firmware/devicetree/base/memory@0/reg 00000000 00 00 00 00 00 00Continue reading
Nothing tricky. Just replace all occurrance of bionic with cosmic in /etc/apt/sources.list and do a apt full-upgrade. For details, see Upgrading from Ubuntu 18.04. But what worth noting is thatContinue reading
Update: The patch mentioned in this post has been merged and I suppose it will be part of Linux 5.0. Phicomm N1’s dtb has also been merged into Linux 5.0.Continue reading