Category Archives: Linux / ARM

Linux on ARM

ARM64 – Odroid C2 – Ethernet Fix, at Last..

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Thanks to Jerome Brunet, there is now a fix for the long-standing Ethernet hang problem on the C2..   Details are here:   http://lists.infradead.org/pipermail/linux-amlogic/2016-November/001538.html The patch is an attachment – named ‘attachment.bin‘, and so will need to be renamed to something appropriate..     I applied this to the 4.9-rc3-derived version of the C2 patched kernel, from https://git.kernel.org/cgit/linux/kernel/git/khilman/linux-amlogic.git/log/?h=v4.10/integ..    There is a … Continue reading →

ARM64 – Odroid C2 – Hack to Fix Ethernet Hangs..

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I had been constantly frustrated by the Odroid C2 meson8b-dwmac Ethernet ‘hang’ problem, which has persisted over (at least..) eight different ‘patched kernel’ versions that I have tested..    The network link hung/stopped after a short time at full (1000Mbps) speed, and also – sometimes after a bit longer – at reduced (100Mbps) speed.. The driver does show … Continue reading →

ARM64 – Odroid C2 – New MMC Driver, Ethernet / USB Still Broken..

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After some of the code for the C2 has been removed from various git repositories, there is a new 4.9-rc1-based tree at https://git.kernel.org/cgit/linux/kernel/git/khilman/linux-amlogic.git/?h=v4.10/integ , which now includes the ‘new’ rewritten MMC driver. To select this, choose ‘Amlogic S905/GX* SD/MMC Host Controller support (MMC_MESON_GX)‘ in the kernel config.. …… Fedora 24 (Workstation Edition) Kernel 4.9.0-rc1-c2 on an aarch64 … Continue reading →

ARM64 – Multiple Meson MMC Mystery..

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I was going to update the Odroid C2 to the latest patched kernel, but then found that the meson-mmc driver had mysteriously vanished from the source tree..     This – of course – makes the kernel pretty useless…    I did some research, but could not find any specific mention of the removal of this code, but then found … Continue reading →

ARM64 – Odroid C2 – Boots with Latest ‘Linux-Next’..

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I tried the latest ‘Linux-Next’ version, from https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/log/?id=refs/tags/next-20160913 and the C2 booted OK, but the Ethernet problem still persists.. ……… eth0: device MAC address 00:1e:06:33:13:6e meson6-dwmac c9410000.ethernet eth0: Link is Up – 1Gbps/Full – flow control rx/tx Fedora 24 (Workstation Edition) Kernel 4.8.0-rc6-next-20160913 on an aarch64 (ttyAML0) ………………… # uname -a Linux rgc2 4.8.0-rc6-next-20160913 #2 SMP PREEMPT … Continue reading →

ARM64 – Odroid C2 – Boots with Patched 4.8-rc4 – Ethernet Issues..

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Decided to try the Odroid C2 with the latest Kernel, and recently-released patches for MMC support.. Used the (patched) version of 4.8-rc4 from here:  https://github.com/ioft/linux/tree/c2    Thanks to umiddelb for producing this, which incorporates the (e)MMC support patches, and also includes patches providing the latest version of the dwmac_meson8b Ethernet driver, and associated mods to the device tree … Continue reading →

ARM64 – Hikey to Kernel 4.7 – and Polkitd Fix..

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Managed to update the Hikey ARM64 SoC to the latest kernel – 4.7 Final. Fedora 24 (Twenty Four) Kernel 4.7.0 on an aarch64 (ttyAMA0) ………………………. # uname -a Linux rghikey 4.7.0 #1 SMP PREEMPT Sun Jul 24 19:53:54 EDT 2016 aarch64 aarch64 aarch64 GNU/Linux On boot, and when the network initialised, polkitd segfaulted again, the same as … Continue reading →

ARM – Next CHIP – Waiting for Hynix NAND Support..

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Tested some of the kernel versions possible (or not..) for the Next CHIP ARMv7, with mixed results..     I added an Ethernet/USB device (ax88179-based) on the USB hub, and the network connection works fine.. Linux-Next does not yet have the drivers for the Hynix NAND in the CHIP, although – with the rootfs separate on a USB stick … Continue reading →

ARM – Next CHIP ARMv7 – First Impressions..

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After pre-ordering one many months ago, I finally got my Next CHIP ARMv7 system in the post.. It certainly is fairly small, but seems well-constructed..     Details are at http://docs.getchip.com/chip.html#chip-hardware After connecting the UART/USB cable, as normal, the system booted into a cut-down version of Debian..   There is no hdmi, or sdcard connector, or Ethernet, but the wi-fi … Continue reading →

ARM64 – Dragonboard 410c – Fail with Linux-Next..

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After the – partial – success with the 96Boards Hikey, I tried the Qualcomm Dragonboard 410c, but the June 29 Linux-Next failed to boot successfully, with only one CPU initialising, and MMC errors, and eventual hang…. ……………………….. psci: failed to boot CPU1 (-95) CPU1: failed to boot: -95 CPU1: failed in unknown state : 0x0 psci: failed … Continue reading →