[Deepin-Kernel-SIG] [linux 6.6-y] config: deepin_arm64_desktop_defconfig: recover enable FB_EFI

[opsiff]

deepin inclusion
category: bugfix

Fix situation when dkms drm driver not install to light the monitor.

Link: #724

Summary by Sourcery

Bug Fixes:

• Fix missing display output on ARM64 systems when DKMS DRM drivers are unavailable by re-enabling EFI framebuffer support in the kernel configuration.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Re-enables the FB_EFI framebuffer option in the Deepin ARM64 desktop defconfig so that displays work even when a DKMS-based DRM driver is not installed or loaded.

File-Level Changes

Change	Details	Files
Re-enable EFI framebuffer support in the Deepin ARM64 desktop defconfig.	Set the FB_EFI configuration option to enabled in the deepin_arm64_desktop_defconfig to restore built-in EFI framebuffer support. Adjust the defconfig so that systems can light the monitor without requiring a DKMS-installed DRM driver.	arch/arm64/configs/deepin_arm64_desktop_defconfig

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[deepin-ci-robot]

deepin pr auto review

我来帮你分析这个配置文件的变更：

1. 语法逻辑：

• 语法格式正确，符合Linux内核配置文件的规范
• 配置项的设置方式（y/m）符合标准

2. 代码质量：

• 将CONFIG_FB从模块(m)改为内置(y)是一个合理的改动
• 新增的CONFIG_FB_EFI=y和CONFIG_XEN_FBDEV_FRONTEND=m配置项位置合适，放在了FB相关配置的附近

3. 性能影响：

• 将FB从模块改为内置会略微增加内核镜像大小，但可以减少启动时的模块加载时间
• 对于桌面系统来说，将Framebuffer(FB)编译进内核是合理的选择，因为这是基础的显示功能

4. 安全性：

• 这些配置项都是标准配置，不存在安全风险
• XEN_FBDEV_FRONTEND作为模块加载是合理的选择，只在需要时加载

改进建议：

1. 考虑添加以下相关配置以完善Framebuffer支持：

CONFIG_FB_SIMPLE=y
CONFIG_FB_ARMCLCD=y

2. 如果系统支持多个显示器，建议添加：

CONFIG_FB_MULTI_FRAMEBUFFER=y

3. 为了更好的性能，建议添加：

CONFIG_FB_DEFERRED_IO=y

这些改动都是可选的，取决于具体的硬件需求和使用场景。当前的改动本身是合理的，没有明显的问题。

[sourcery-ai]

Hey - I've reviewed your changes and they look great!

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[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: Cryolitia
Once this PR has been reviewed and has the lgtm label, please ask for approval from opsiff. For more information see the Code Review Process.

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Details

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• deepin/OWNERS

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[Copilot]

Pull request overview

This pull request re-enables EFI framebuffer support in the Deepin ARM64 kernel configuration to provide display output when DKMS DRM drivers are not installed. This ensures the monitor can display output during system startup and in scenarios where advanced graphics drivers are unavailable.

• Changes framebuffer configuration from module to built-in
• Enables EFI framebuffer support (CONFIG_FB_EFI)
• Adds Xen framebuffer frontend support as a module

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