On 21-08-20, 19:37, Wan Ahmad Zainie wrote: > +/* From ACS_eMMC51_16nFFC_RO1100_Userguide_v1p0.pdf p17 */ > +#define FREQSEL_200M_170M 0x0 > +#define FREQSEL_170M_140M 0x1 > +#define FREQSEL_140M_110M 0x2 > +#define FREQSEL_110M_80M 0x3 > +#define FREQSEL_80M_50M 0x4 > + > +#define maskval(mask, val) (((val) << (ffs(mask) - 1)) & mask) Kernel has a macro do this for you, please use FIELD_PREP instead of your own macro -- ~Vinod
