diff options
Diffstat (limited to 'arch/arm/dts/stm32f746-disco.dts')
| -rw-r--r-- | arch/arm/dts/stm32f746-disco.dts | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/arch/arm/dts/stm32f746-disco.dts b/arch/arm/dts/stm32f746-disco.dts index 8e4576b..e720ff1 100644 --- a/arch/arm/dts/stm32f746-disco.dts +++ b/arch/arm/dts/stm32f746-disco.dts @@ -106,12 +106,15 @@ status = "okay"; mr-nbanks = <1>; - /* sdram memory configuration from sdram datasheet IS42S16400J */ + /* Memory configuration from sdram datasheet MT48LC_4M32_B2B5-6A */ bank1: bank@0 { - st,sdram-control = /bits/ 8 <NO_COL_8 NO_ROW_12 MWIDTH_16 BANKS_2 - CAS_3 RD_BURST_EN RD_PIPE_DL_0>; - st,sdram-timing = /bits/ 8 <TMRD_1 TXSR_60 TRAS_42 TRC_60 TRP_18 - TRCD_18>; + st,sdram-control = /bits/ 8 <NO_COL_8 NO_ROW_12 MWIDTH_16 BANKS_4 + CAS_3 SDCLK_2 RD_BURST_EN + RD_PIPE_DL_0>; + st,sdram-timing = /bits/ 8 <TMRD_2 TXSR_6 TRAS_4 TRC_6 TWR_2 + TRP_2 TRCD_2>; + /* refcount = (64msec/total_row_sdram)*freq - 20 */ + st,sdram-refcount = < 1542 >; }; }; |