Messages in this thread |  | | From | Tiezhu Yang <> | Subject | [PATCH v2 0/3] Add basic support for Loongson 7A1000 bridge chip | Date | Mon, 23 Mar 2020 10:59:12 +0800 |
| |
The Loongson 7A1000 bridge chip has been released for several years since the second half of 2017, but it is not supported by the Linux mainline kernel while it only works well with the Loongson internal kernel version. When I update the latest version of Linux mainline kernel on the Loongson 3A3000 CPU and 7A1000 bridge chip system, the boot process failed and I feel depressed.
The 7A1000 bridge chip is used a lot with 3A3000 or 3A4000 CPU in the most Loongson desktop and sever products, it is important to support Loongson 7A1000 bridge chip by the Linux mainline kernel.
This patch series adds the basic support for the Loongson 7A1000 bridge chip, when apply these patches based on linux-5.6-rc7, the boot process is successful and we can login normally used with the latest firmware and discrete graphics card, the next work to do is power management and some other controller device drivers.
Additionally, when I git clone mips code [1], the speed is too slow and clone always failed, so this patch series is based on the latest linux-5.6-rc7 [2].
If you have any questions and suggestions, please let me know.
Thanks,
Tiezhu Yang
v2: - The split patch series about Loongson vendor ID and SATA controller has been merged into the linux-block.git by Jens Axboe [3].
- Think about using hierarchy IRQ domain in the patch of interrupt controller, and this maybe depend on the patch series by Jiaxun ("Modernize Loongson64 Machine"), so the patch about interrupt is not included in this v2 patch series.
[1] git clone https://git.kernel.org/pub/scm/linux/kernel/git/mips/linux.git [2] git clone https://github.com/torvalds/linux.git [3] https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/commit/?h=for-next&id=9acb9fe18d86 https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/commit/?h=for-next&id=e49bd683e00b
Tiezhu Yang (3): MIPS: Loongson: Get host bridge information MIPS: Loongson: Add DMA support for 7A1000 MIPS: Loongson: Add PCI support for 7A1000
arch/mips/include/asm/mach-loongson64/boot_param.h | 20 ++++++ arch/mips/loongson64/dma.c | 9 ++- arch/mips/loongson64/env.c | 20 ++++++ arch/mips/loongson64/init.c | 17 +++++ arch/mips/pci/ops-loongson3.c | 72 ++++++++++++++++++++-- 5 files changed, 131 insertions(+), 7 deletions(-)
-- 2.1.0
|  |