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CoreLab TVPro: Update README
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devices/corelab-tvpro/README.md

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[Armbian](https://github.com/retro98boy/armbian-build)
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[CoreELEC](https://github.com/retro98boy/CoreELEC)
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# 硬件
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喽喽大佬逆向郎国A311D2核心板PIN定义后,自己画的载板,并提供基于Khadas VIM4源码移植的安卓系统
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核心板存在T7 4G、T7 8G、T7C 4G、T7C 8G四种,作者主要适配T7 8G的系统
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[anshi233](https://github.com/anshi233)大佬完成了HDMI RX tvserver Linux移植,并准备基于5.15 BSP内核开发硬件加速的ffmpeg,旨在将其打造成直播采集推流一体机。大佬的gitee地址:https://gitee.com/anshi233
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![overview](pictures/overview.jpg)
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## LINE OUT/IN切换
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3.5mm接口是LINE OUT还是LINE IN由板子上的跳线决定,如图:
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![line-out-in](pictures/line-out-in.jpg)
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## 核心板
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![top](pictures/top.jpg)
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![som-top](pictures/som-top.jpg)
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![bottom](pictures/bottom.jpg)
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![som-bottom](pictures/som-bottom.jpg)
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![short](pictures/short.jpg)
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蓝圈里面是eMMC cmd上拉电阻
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# U-Boot
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参考[此处](../aoc-65t33z/README.md#U-Boot),只需要将65t33z改成tvpro
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# 内核
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暂时只能使用供应商内核,最新版本是5.15。dts在[此处](https://github.com/retro98boy/khadas-common-drivers/blob/khadas-vims-5.15.y/arch/arm64/boot/dts/amlogic/t7-a311d2-tvpro-8g.dts)
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## GPU
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供应商内核GPU驱动使用ARM私有blob,对于开源软件的兼容性并不好。好在可以改用Panfrost内核驱动加Mesa库。需要修改dts和内核配置,可以参考[此处](https://github.com/retro98boy/armbian-build/commit/18291b0f467b6a5d967a2b6cacb602c386c1cb52)
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# 安装系统
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[此处](../aoc-65t33z/README.md#安装系统)的安装思路对该设备完全适用。[release界面](https://github.com/retro98boy/amlogic-devices/releases/tag/corelab-tvpro)同样提供U-Boot线刷包
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由于该设备有micro SD卡槽,所以安装系统的方式更多,可以:
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- 直接将系统dd到micro SD卡上,插入设备开机使用。注意,要先擦除eMMC上的bootloader
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- 直接从micro SD卡启动Armbian当作PE/LiveISO,再将系统.img刻录到eMMC实现安装系统到eMMC
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