Commit 1e78042c authored by Michael Hennerich's avatar Michael Hennerich Committed by Bryan Wu
Browse files

[Blackfin] arch: take DDR DEVWD into consideration as well for BF548 



Pointed-out-by: default avatarMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: default avatarMike Frysinger <vapier.adi@gmail.com>
Signed-off-by: default avatarBryan Wu <cooloney@kernel.org>
parent 5d750b9e

arch/blackfin/kernel/setup.c

+13 −6
Original line number Diff line number Diff line
@@ -680,13 +680,20 @@ static inline int __init get_mem_size(void) 
	return EBSZ_TO_MEG(bfin_read_EBIU_SDBCTL());

#  endif

# elif defined(EBIU_DDRCTL1)

	switch (bfin_read_EBIU_DDRCTL1() & 0xc0000) {

		case DEVSZ_64:  return 64 / 8;

		case DEVSZ_128: return 128 / 8;

		case DEVSZ_256: return 256 / 8;

		case DEVSZ_512: return 512 / 8;

		default:        return 0;

	u32 ddrctl = bfin_read_EBIU_DDRCTL1();

	int ret = 0;

	switch (ddrctl & 0xc0000) {

		case DEVSZ_64:  ret = 64 / 8;

		case DEVSZ_128: ret = 128 / 8;

		case DEVSZ_256: ret = 256 / 8;

		case DEVSZ_512: ret = 512 / 8;

	}

	switch (ddrctl & 0x30000) {

		case DEVWD_4:  ret *= 2;

		case DEVWD_8:  ret *= 2;

		case DEVWD_16: break;

	}

	return ret;

# endif

#endif

	BUG();