主题中讨论的其他部件:SN65DSI83
大家好:
我曾在 Qualcomm ms8909平台(AndroidDSI83 5.1)上使用SN65DSI83, SN65DSI83 i2c工作正常。 我在测试模式下调试芯片,屏幕黑屏,附件是LCD数据表。 我的DSI CLK为429MHz,I除以6, LVDS CLK为71.5MHz
具体步骤:
1. 开机后,msm8909将SN65DSI83-Q1的EN输入拉高。
2. SN65DIS83是i2c配置,将其设置为测试模式,具体设置如下:
- {0x09, 0x00},
- {0x0A , 0x05},// LVDS_CLK范围:62.5~85M
- {0x0B, 0x28},//0x18
- {0x0D, 0x00},
- {0x10, 0x00},//已启用4个通道
- {0x11, 0x00},
- {0x12, 0x55},//DSI clk范围:(4229-40)/5+8.
- {0x13, 0x00},
- {0x18, 0x78},
- {0x19, 0x00},
- {0x1A, 0x03},
- {0x1B , 0x00},
- {0x20, 0x00},
- {0x21, 0x05},
- {0x22, 0x00},
- {0x23, 0x00},
- {0x24, 0x20},
- {0x25, 0x03},
- {0x26, 0x00},
- {0x27, 0x00},
- {0x28, 0x21},//21
- {0x29, 0x00},
- {0x2A, 0x00},
- {0x2B, 0x00},
- {0x2C , 0x08},
- {0x2d , 0x00},
- {0x2E , 0x00},
- {0x2F , 0x00},
- {0x30, 0x02},
- {0x31, 0x00},
- {0x32, 0x00},
- {0x33, 0x00},
- {0x34, 0x28},
- {0x35, 0x00},
- {0x36, 0x22},
- {0x37, 0x00},
- {0x38, 0x10},
- {0x39, 0x00},
- {0x3A , 0x10},
- {0x3B , 0x00},
- {0x3C , 0x10},
- {0x3D , 0x00},
- {0x3E , 0x00},
- {0x0D, 0x01},
- {REGFLAG_DELAY,10},//延迟5毫秒
- {0x09, 0x01},//软重置
- {0xFF,0x00},//结束标志
3. msm8909 DSI 驱动器负载, 通过示波器的mipi输出时钟如下所示:
但 屏幕不工作,我有一些问题:
1.图像上方的非连续mipi时钟是否正常?
2. 该表是sn65dsi83文档中描述的初始化顺序。 如何设置LP11?



