[U-Boot] [v3] armv8: ls1028ardb: enable DisplayPort Power support

Bin Meng bmeng.cn at gmail.com
Thu Jul 25 08:26:54 UTC 2019


On Thu, Jul 25, 2019 at 3:18 PM Wen He <wen.he_1 at nxp.com> wrote:
>
> Enable DP_PWR signal to power the DP to HDMI converter cable.
>
> Signed-off-by: Wen He <wen.he_1 at nxp.com>
> ---
>  board/freescale/ls1028a/ls1028a.c | 13 +++++++++++++
>  include/configs/ls1028a_common.h  |  3 +++
>  2 files changed, 16 insertions(+)
>
> diff --git a/board/freescale/ls1028a/ls1028a.c b/board/freescale/ls1028a/ls1028a.c
> index ece91660bf..ea8c43b6af 100644
> --- a/board/freescale/ls1028a/ls1028a.c
> +++ b/board/freescale/ls1028a/ls1028a.c
> @@ -75,6 +75,19 @@ int board_init(void)
>         u8 val = I2C_MUX_CH_DEFAULT;
>
>         i2c_write(I2C_MUX_PCA_ADDR_PRI, 0x0b, 1, &val, 1);
> +#endif
> +
> +#if defined(CONFIG_TARGET_LS1028ARDB)
> +       u8 reg;
> +
> +       reg = QIXIS_READ(brdcfg[4]);
> +       /* Field| Function
> +        * 3     | DisplayPort Power Enable (net DP_PWR_EN):
> +        * DPPWR | 0= DP_PWR is enabled.
> +        */

Please use correct multi-line comment format.

> +       reg &= ~(DP_PWD_EN_DEFAULT_MASK);
> +       QIXIS_WRITE(brdcfg[4], reg);
> +
>  #endif
>         return 0;
>  }

Regards,
Bin


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