device/..產品../ProjectConfig.mk下有個巨集，修改這個巨集即可。

如：device/wisky/wisky8735_3g_h/ProjectConfig.mk

MTK_LCM_PHYSICAL_ROTATION = 901

修改這個巨集，可能會影響其他地方。

=====轉======

修改recovery程式碼，用固定的方向。

// Read configuration from MTK_LCM_PHYSICAL_ROTATION
static int
 
 rotate_config(GRSurface *gr_draw)
{
    if (rotate_index<0)
    {   
        if (gr_draw->pixel_bytes != 4) rotate_index=0; // support 4 bytes pixel only
        else if (0 == strncmp(MTK_LCM_PHYSICAL_ROTATION, "90", 2)) rotate_index=1;
        else if (0 == strncmp(MTK_LCM_PHYSICAL_ROTATION, "180", 3
 
)) rotate_index=2;
        else if (0 == strncmp(MTK_LCM_PHYSICAL_ROTATION, "270", 3)) rotate_index=3;
        else rotate_index=0;
        printf("[graphics] rotate_config %d %s\n", rotate_index, MTK_LCM_PHYSICAL_ROTATION);
    }   
    return rotate_index;
}