AM625: How to rotate screen 180 degree

Tool/software:

Hello TI,

We want to rotate screen 180 as below. May you guide?

I try to change but it dose not work.

flag to  DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC

static const struct drm_display_mode edt_etm0700g0dh6_mode = {
.clock = 26000,
.hdisplay = 800,
.hsync_start = 800 + 40,
.hsync_end = 800 + 40 + 128,
.htotal = 800 + 40 + 128 + 88,
.vdisplay = 480,
.vsync_start = 480 + 10,
.vsync_end = 480 + 10 + 2,
.vtotal = 480 + 10 + 2 + 33,
.flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
//.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
};

Current setting:

display {
compatible = "edt,et070080dh6";
backlight = <&lcd_bl>;
port {
lcd_in: endpoint {
remote-endpoint = <&dpi1_out>;
};
};
};

&dss_ports {
/* VP2: DPI Output */
port@1 {
reg = <1>;

dpi1_out: endpoint {
remote-endpoint = <&lcd_in>;
};
};
};