CMD_SPEED_MASK
cmd &= ~(CMD_SPEED_MASK << CMD_SPEED_SHIFT);
reg &= ~((CMD_SPEED_MASK << CMD_SPEED_SHIFT) |
u32 mask = ~(CMD_SPEED_MASK << CMD_SPEED_SHIFT | CMD_HD_EN);
reg &= ~((CMD_SPEED_MASK << CMD_SPEED_SHIFT) |