AR0521_WIDTH_MAX
sensor->fmt.width = AR0521_WIDTH_MAX;
u16 x = clamp((AR0521_WIDTH_MAX - sensor->fmt.width) / 2,
AR0521_WIDTH_MAX);
max_hblank = AR0521_TOTAL_WIDTH_MAX - AR0521_WIDTH_MAX;
fse->max_width = AR0521_WIDTH_MAX;