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    cm5-evb 的刷机教程希望出一个

    Scheduled Pinned Locked Moved Pi CM5
    27 Posts 6 Posters 1.5k Views
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    • G
      george @顾真牛
      last edited by

      @顾真牛 非标分辨率需要把EDID读出来,解析以后把参数加到内核里边就可以了。

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        顾真牛 @george
        last edited by

        @george 内核和4B通用的嘛?

        大法师大 1 Reply Last reply Reply Quote 0
        • 大法师大
          大法师 @顾真牛
          last edited by

          @顾真牛
          内核目前是一套代码,两个编译参数区分

          jack@cool-pi.com

          顾 T 2 Replies Last reply Reply Quote 0
          • 顾
            顾真牛 @大法师
            last edited by

            @大法师 翻到了, 还是要出个wiki吧 论坛翻起来有点累

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            • J
              jack_admin @顾真牛
              last edited by

              @顾真牛 在规划部署。

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              • 顾
                顾真牛 @george
                last edited by

                @george EDID 怎么读 内核修改哪个文件呀?我正在龟速 git clone 希望明年能拉完kernel

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                  george @顾真牛
                  last edited by

                  @顾真牛 可以抓下开机log和这个显示器的edid:
                  cat /sys/class/drm/card0-HDMI*/edid > /data/edid.bin

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                    顾真牛 @george
                    last edited by

                    edid.bin

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                      likeshixi @大法师
                      last edited by

                      This post is deleted!
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                      • 顾
                        顾真牛 @george
                        last edited by

                        @george

                        1:首先安装解析工具:
                        sudo apt-get install read-edid edid-decode
                        2:解析 edid.bin
                        parse-edid < edid.binr看到解析出的信息。
                        cat edid.bin edid-decode > edid.txt

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                        • 顾
                          顾真牛 @george
                          last edited by

                          @george 我看了下解出来的edid信息 好像有俩对的分辨率
                          edid.txt

                          9727b3e5-9234-409b-b69f-6c8f3b89a843-image.png

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                            george @顾真牛
                            last edited by

                            @顾真牛 uboot 和kernel 搜索edid.c 有个白名单把你的分辨率加进去 static const struct base_drm_display_mode resolution_white[]

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                              george @顾真牛
                              last edited by george

                              @顾真牛 下周发布底板的设计资料。

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                                顾真牛 @george
                                last edited by

                                @george

                                948c29cc-15b1-4e90-ac6c-d492f87a5e01-image.png

                                好像不太对 没这个文件

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                                  顾真牛 @george
                                  last edited by

                                  @george 好像应该是 e9cbc877-d81d-4d9f-acf3-8168964ea897-image.png
                                  drm_edid.c 这个文件吧? 我试试 也没你说的那个函数 不过可以添加一下参数

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                                    顾真牛 @george
                                    last edited by

                                    @george 帮忙看下吧 我加了几个地方不对

                                    '''
                                    { DRM_MODE("4096x2160", DRM_MODE_TYPE_DRIVER, 297000, 4096, 4184,
                                    4272, 4400, 0, 2160, 2168, 2178, 2250, 0,
                                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
                                    .picture_aspect_ratio = HDMI_PICTURE_ASPECT_256_135, },
                                    '''

                                    .picture_aspect_ratio 这个好像是屏幕比例 我这特殊屏 192:55 或者 32:9的哪里添加

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                                      likeshixi @大法师
                                      last edited by

                                      @大法师 接2k的显示器系统分辨率最高选项只有显示1920x1080截图 2023-04-02 18-15-48.png

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                                        likeshixi @大法师
                                        last edited by

                                        @大法师 没有查看u盘内容的权限截图 2023-04-03 09-48-44.png

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                                        • T
                                          Twsuts @大法师
                                          last edited by

                                          @大法师 那请问一下,如果我CP4换到CM5我的系统要咋修改一下呢

                                          大法师大 1 Reply Last reply Reply Quote 0
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                                            likeshixi @大法师
                                            last edited by

                                            @大法师 没有查看u盘内容的权限,怎么回事截图 2023-04-03 12-33-30.png

                                            大法师大 1 Reply Last reply Reply Quote 0
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