Hi, Please consider enabling CONFIG_ARCH_CIX on arm64. I admittedly am not entirely sure what it enables -- I was hoping that doing this gets GPIO to work, but a recent rebuild did not show this to be the case. I have an Orion O6 device, which is IMO the best arm64 consumer board I've seen so far, and it uses the CIX P1. Perhaps this enables some other feature I haven't had use for yet. Regarding GPIO, my hope is that with this recent documentation release [1], support will land soon. Best, Christian [1]: https://www.cnx-software.com/2025/12/13/cix-releases-p1-cpu-trm-and-developer-guides-for-gpu-ai-accelerator-os-and-firmware-bios/
Hi Christian, I use the Orion O6 board daily, and I recently managed to successfully boot Debian on it. Also, without CONFIG_ARCH_CIX enabled, the board probably wouldn't boot at all, as the DTB is only included when this configuration is selected. Reference: arch/arm64/boot/dts/cix/Makefile arch/arm64/configs/defconfig I have a question regarding your setup. When you built the kernel for testing, did you use the official Debian kernel build method, or did you use the upstream Linux kernel with a custom config and package it using deb-pkg? Regarding the GPIO support, I suspect it hasn't been fully merged into upstream yet. I am also curious about this, so I would like to CC the folks at CIX who have done great work to ask them directly: https://gitlab.com/cix-linux/cix_opensource/linux/-/commit/4231f6293fca28fd29b9cae8d1efed9947d6c0e1 Could you share the kernel .config file you used for testing so I can take a look? Best regards, Yunseong
Hi Christian, I use the Orion O6 board daily, and I recently managed to successfully boot Debian on it. Also, without CONFIG_ARCH_CIX enabled, the board probably wouldn't boot at all, as the DTB is only included when this configuration is selected. Reference: arch/arm64/boot/dts/cix/Makefile arch/arm64/configs/defconfig I have a question regarding your setup. When you built the kernel for testing, did you use the official Debian kernel build method, or did you use the upstream Linux kernel with a custom config and package it using deb-pkg? Regarding the GPIO support, I suspect it hasn't been fully merged into upstream yet. I am also curious about this, so I would like to CC the folks at CIX who have done great work to ask them directly: https://gitlab.com/cix-linux/cix_opensource/linux/-/commit/4231f6293fca28fd29b9cae8d1efed9947d6c0e1 Could you share the kernel .config file you used for testing so I can take a look? Best regards, Yunseong
Hi Kim,
At least in UEFI mode, I managed to install Debian 13 ("trixie") using
the official Debian installation media, with no issues. Installation
went flawless. This kernel does not have CONFIG_ARCH_CIX enabled.
I later upgrade the kernel to the backported 6.18, also no issues.
The latter. I tried the former but ran into issues modifying the
configuration, so I switched to the latter and used Debians's 6.18
config as a starting point.
Sure, attached. It's basically the 6.18 config (6.18 because that was
the most recent one at the time of my test), with the following additions:
CONFIG_ARCH_CIX
CONFIG_PINCTRL_SKY1
CONFIG_PCI_SKY1_HOST
Best,
Christian
GPIO support has just accepted, and should be at tomorrow's linux-next, and will be at v7.1-rc1 if without exception. Peter [1]: https://lore.kernel.org/r/20260312080826.3470205-2-zichar.zhang@cixtech.com 本邮件及其附件包含CIX公司的保密信息，受法律保护，仅供本邮件指定的收件人查阅。严禁任何未经授权的使用、传播、分发或复制本邮件及其任何内容。此限制适用于指定收件人以外的所有人员，包括未经明确授权处理此类信息的CIX公司员工或代理人。若您误收本邮件，请立即通知发件人，并永久删除邮件及所有附件。互联网传输无法保证及时性、安全性、完整性和无病毒性，CIX公司对任何传输错误或遗漏概不承担责任。
GPIO support has just accepted, and should be at tomorrow's linux-next, and will be at v7.1-rc1 if without exception. Peter [1]: https://lore.kernel.org/r/20260312080826.3470205-2-zichar.zhang@cixtech.com 本邮件及其附件包含CIX公司的保密信息，受法律保护，仅供本邮件指定的收件人查阅。严禁任何未经授权的使用、传播、分发或复制本邮件及其任何内容。此限制适用于指定收件人以外的所有人员，包括未经明确授权处理此类信息的CIX公司员工或代理人。若您误收本邮件，请立即通知发件人，并永久删除邮件及所有附件。互联网传输无法保证及时性、安全性、完整性和无病毒性，CIX公司对任何传输错误或遗漏概不承担责任。
Hi Peter, Thank you so much for letting me know! I have uploaded a patch for Debian kernel that sets the config to 'y': https://salsa.debian.org/kernel-team/linux/-/merge_requests/1858 I noticed that the config Christian shared on mailing list was set to 'm'. CONFIG_PCI_SKY1_HOST=m CONFIG_PINCTRL_SKY1_BASE=m CONFIG_PINCTRL_SKY1=m When using the Orion O6 board with full GPIO support, could you double-check if I should set this part to built-in as well? Thank you! Best regards, Yunseong
Hi Peter, Thank you so much for letting me know! I have uploaded a patch for Debian kernel that sets the config to 'y': https://salsa.debian.org/kernel-team/linux/-/merge_requests/1858 I noticed that the config Christian shared on mailing list was set to 'm'. CONFIG_PCI_SKY1_HOST=m CONFIG_PINCTRL_SKY1_BASE=m CONFIG_PINCTRL_SKY1=m When using the Orion O6 board with full GPIO support, could you double-check if I should set this part to built-in as well? Thank you! Best regards, Yunseong