[参考译文] TDA4VM：如何切换到 DPI1 以输出图像数据

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https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1569865/tda4vm-how-to-switch-to-dpi1-to-output-image-data

器件型号：TDA4VM

工具/软件：

尊敬的专家：

之前、我们已通过 DPI0 成功输出 BT656 格式图像。

现在、我们计划将输出切换到 DPI1、同时保持所有其他设置不变。

基于上述情况、我进行了以下修改。

在文件 app_dss_defaults.c 中、nodeDpiId 的值已更改为 APP_DCTRL_NODE_DPI_DPI1。

在 J721E_pinmux_data.c 文件中、添加了 Vout1 的 pinmux 配置。

static pinmuxPerCfg_t gVout0PinCfg[] =
{
    /* MyVOUT0 -> VOUT0_DATA2 -> AF23 */
    {
        PIN_PRG1_PRU1_GPO2, PIN_MODE(10) | \
        ((PIN_PULL_DISABLE) & (~PIN_PULL_DIRECTION & ~PIN_INPUT_ENABLE))
    },
    /* MyVOUT0 -> VOUT0_DATA3 -> AD23 */
    {
        PIN_PRG1_PRU1_GPO3, PIN_MODE(10) | \
        ((PIN_PULL_DISABLE) & (~PIN_PULL_DIRECTION & ~PIN_INPUT_ENABLE))
    },
    /* MyVOUT0 -> VOUT0_DATA4 -> AH24 */
    {
        PIN_PRG1_PRU1_GPO4, PIN_MODE(10) | \
        ((PIN_PULL_DISABLE) & (~PIN_PULL_DIRECTION & ~PIN_INPUT_ENABLE))
    },
    /* MyVOUT0 -> VOUT0_DATA5 -> AG21 */
    {
        PIN_PRG1_PRU1_GPO5, PIN_MODE(10) | \
        ((PIN_PULL_DISABLE) & (~PIN_PULL_DIRECTION & ~PIN_INPUT_ENABLE))
    },
    /* MyVOUT0 -> VOUT0_DATA6 -> AE23 */
    {
        PIN_PRG1_PRU1_GPO6, PIN_MODE(10) | \
        ((PIN_PULL_DISABLE) & (~PIN_PULL_DIRECTION & ~PIN_INPUT_ENABLE))
    },
    /* MyVOUT0 -> VOUT0_DATA7 -> AC21 */
    {
        PIN_PRG1_PRU1_GPO7, PIN_MODE(10) | \
        ((PIN_PULL_DISABLE) & (~PIN_PULL_DIRECTION & ~PIN_INPUT_ENABLE))
    },
    /* MyVOUT0 -> VOUT0_DATA8 -> Y23 */
    {
        PIN_PRG1_PRU1_GPO8, PIN_MODE(10) | \
        ((PIN_PULL_DISABLE) & (~PIN_PULL_DIRECTION & ~PIN_INPUT_ENABLE))
    },
    /* MyVOUT0 -> VOUT0_DATA9 -> AF21 */
    {
        PIN_PRG1_PRU1_GPO9, PIN_MODE(10) | \
        ((PIN_PULL_DISABLE) & (~PIN_PULL_DIRECTION & ~PIN_INPUT_ENABLE))
    },
    /* MyVOUT0 -> VOUT0_HSYNC -> AJ26 */
    {
        PIN_PRG1_PRU1_GPO16, PIN_MODE(10) | \
        ((PIN_PULL_DISABLE) & (~PIN_PULL_DIRECTION & ~PIN_INPUT_ENABLE))
    },
    /* MyVOUT0 -> VOUT0_PCLK -> AH22 */
    {
        PIN_PRG1_PRU1_GPO19, PIN_MODE(10) | \
        ((PIN_PULL_DISABLE) & (~PIN_PULL_DIRECTION & ~PIN_INPUT_ENABLE))
    },
    /* MyVOUT0 -> VOUT0_VSYNC -> AJ22 */
    {
        PIN_PRG1_PRU1_GPO18, PIN_MODE(10) | \
        ((PIN_PULL_DISABLE) & (~PIN_PULL_DIRECTION & ~PIN_INPUT_ENABLE))
    },
    {PINMUX_END}
};

static pinmuxPerCfg_t gVout1PinCfg[] =
{
    /* MyVOUT1 -> VOUT1_DATA2 -> V28 */
    {
        PIN_RGMII5_TD3, PIN_MODE(4) | \
        ((PIN_PULL_DISABLE) & (~PIN_PULL_DIRECTION & ~PIN_INPUT_ENABLE))
    },
    /* MyVOUT1 -> VOUT1_DATA3 -> V29 */
    {
        PIN_RGMII5_TD2, PIN_MODE(4) | \
        ((PIN_PULL_DISABLE) & (~PIN_PULL_DIRECTION & ~PIN_INPUT_ENABLE))
    },
    /* MyVOUT1 -> VOUT1_DATA4 -> V27 */
    {
        PIN_RGMII5_TD1, PIN_MODE(4) | \
        ((PIN_PULL_DISABLE) & (~PIN_PULL_DIRECTION & ~PIN_INPUT_ENABLE))
    },
    /* MyVOUT1 -> VOUT1_DATA5 -> U28 */
    {
        PIN_RGMII5_TD0, PIN_MODE(4) | \
        ((PIN_PULL_DISABLE) & (~PIN_PULL_DIRECTION & ~PIN_INPUT_ENABLE))
    },
    /* MyVOUT1 -> VOUT1_DATA6 -> U29 */
    {
        PIN_RGMII5_TXC, PIN_MODE(4) | \
        ((PIN_PULL_DISABLE) & (~PIN_PULL_DIRECTION & ~PIN_INPUT_ENABLE))
    },
    /* MyVOUT1 -> VOUT1_DATA7 -> U25 */
    {
        PIN_RGMII5_RXC, PIN_MODE(4) | \
        ((PIN_PULL_DISABLE) & (~PIN_PULL_DIRECTION & ~PIN_INPUT_ENABLE))
    },
    /* MyVOUT1 -> VOUT1_DATA8 -> U27 */
    {
        PIN_RGMII5_RD3, PIN_MODE(4) | \
        ((PIN_PULL_DISABLE) & (~PIN_PULL_DIRECTION & ~PIN_INPUT_ENABLE))
    },
    /* MyVOUT1 -> VOUT1_DATA9 -> U24 */
    {
        PIN_RGMII5_RD2, PIN_MODE(4) | \
        ((PIN_PULL_DISABLE) & (~PIN_PULL_DIRECTION & ~PIN_INPUT_ENABLE))
    },
    /* MyVOUT1 -> VOUT1_HSYNC -> W27 */
    {
        PIN_RGMII6_TD0, PIN_MODE(4) | \
        ((PIN_PULL_DISABLE) & (~PIN_PULL_DIRECTION & ~PIN_INPUT_ENABLE))
    },
    /* MyVOUT1 -> VOUT1_PCLK -> W29 */
    {
        PIN_RGMII6_TXC, PIN_MODE(4) | \
        ((PIN_PULL_DISABLE) & (~PIN_PULL_DIRECTION & ~PIN_INPUT_ENABLE))
    },
    /* MyVOUT1 -> VOUT1_VSYNC -> V25 */
    {
        PIN_RGMII6_TD1, PIN_MODE(4) | \
        ((PIN_PULL_DISABLE) & (~PIN_PULL_DIRECTION & ~PIN_INPUT_ENABLE))
    },
    {PINMUX_END}
};

static pinmuxModuleCfg_t gVoutPinCfg[] =
{
    {0, TRUE, gVout0PinCfg},
    {1, TRUE, gVout1PinCfg},
    {PINMUX_END}
};

但是、在切换到 DPI1 时、我发现 Vout1 的 PCLK 波形非常奇怪。波形图如下所示。