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docs: add linux upstream suppport status
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xen0n authored Sep 4, 2023
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* [如何称呼龙架构？](loong-or-loongarch.md)
* [旧世界与新世界](old-and-new-worlds.md)
* [龙芯硬件 Errata 整理](errata.md)
* [Linux 上游硬件支持状态](linux-upstream-support.md)
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# Linux 上游硬件支持状态

本页面跟踪 Linux 上游对龙芯平台相关硬件的支持情况。在以下表格中，约定：

- 版本号：从该版本 Linux 起支持
- OK：使用标准接口，不需要额外支持
- WIP：有尚未合并到主线的补丁
- TODO：有该功能但没有补丁
- N/A：硬件不支持该功能

CPU 支持情况：

| 功能 | 3A5000 | 3A6000 |
|----------|------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------|
| SMT | N/A | [6.5](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f6f0c9a74a48448583c3cb0f3f067bc3fe0f13c6) |
| LSX/LASX | [6.5](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=616500232e632dba8b03981eeccadacf2fbf1c30) | [6.5](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=616500232e632dba8b03981eeccadacf2fbf1c30) |
| LBT | [6.6](https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/arch/loongarch/Kconfig?id=f36ccee840819151a4f50e058f82a2c7f6d3747a) | [6.6](https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/arch/loongarch/Kconfig?id=f36ccee840819151a4f50e058f82a2c7f6d3747a) |
| HWMon | [WIP](https://github.com/loongarchlinux/linux/commit/fbc7e8f1e72f9efee68cfe7b70cc397adc325818) | [WIP](https://github.com/loongarchlinux/linux/commit/fbc7e8f1e72f9efee68cfe7b70cc397adc325818) |
| CPUFreq | [WIP](https://github.com/loongarchlinux/linux/commit/9eed420e12431d09cbd87eb76ab3d1f77f9fafcd) | [WIP](https://github.com/loongarchlinux/linux/commit/9eed420e12431d09cbd87eb76ab3d1f77f9fafcd) |

桥片支持情况：

| 功能 | 7A1000 | 7A2000 |
|----------------|--------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------|
| RTC | OK(Also in [6.5](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1b733a9ebc3d8011ca66ec6ff17f55a440358794)) | OK(Also in [6.5](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1b733a9ebc3d8011ca66ec6ff17f55a440358794)) |
| GPIO | [6.4](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7944d3b7fe86067509751473aa917fdfd662d92c) | [6.4](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7944d3b7fe86067509751473aa917fdfd662d92c) |
| I2C | [6.3](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=015e61f0bffd46600496e50d3b2298f51f6b11a8) | [6.3](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=015e61f0bffd46600496e50d3b2298f51f6b11a8) |
| 以太网 | [5.14](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=30bba69d7db40e732d6c0aa6d4890c60d717e314) | [WIP](https://github.com/loongarchlinux/linux/commit/2a948c4b7bc5cc2689e2d0edfe83b4980b81b9ad) |
| OHCI USB1.1 | OK | OK |
| EHCI USB2.0 | OK | OK |
| XHCI USB3.0 | N/A | OK |
| GPU 图形处理器 | TODO | TODO |
| DC 显示控制器 | [6.6](https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/drivers/gpu/drm/loongson?id=f39db26c54281da6a785259498ca74b5e470476f) | [6.6](https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/drivers/gpu/drm/loongson?id=f39db26c54281da6a785259498ca74b5e470476f) |
| HDA 音频 | [6.5](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=28bd137a3c8e105587ba8c55b68ef43b519b270f) | [6.5](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=28bd137a3c8e105587ba8c55b68ef43b519b270f) |
| AC97 | TODO | N/A |
| I2S | N/A | TODO |
| SATA | OK | OK |
| PCIE | OK | OK |
| SPI | [WIP](https://github.com/loongarchlinux/linux/commit/be0359f602ec7d5c99c4c65ce1ee6ee0f7d1a7ec) | [WIP](https://github.com/loongarchlinux/linux/commit/be0359f602ec7d5c99c4c65ce1ee6ee0f7d1a7ec) |
| LPC | TODO | TODO |
| IOMMU | N/A | [WIP](https://github.com/loongarchlinux/linux/commit/1d26eae35f9a6f9d318112c33a177b3612179b26) |

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