A display panel, a driving method for a display panel, and a display device are provided. The display panel includes a functional component area, a display area at least partially surrounding the functional component area, a first non-display area between the functional component area and the display area, a second non-display area at least partially surrounding the display area, a touch-control electrode layer, and touch-control signal lines. The touch-control electrode layer includes a plurality of touch-control electrode blocks. The touch-control signal lines are electrically connected to the plurality of touch-control electrode blocks correspondingly. At least one touch-control signal line of the touch-control signal lines is multiplexed as crack detection lines. At least a portion of the crack detection lines is located in the first non-display area and surrounding the functional component area.