| Icenowy Zheng | eb4766e | 2017-06-03 17:10:24 +0800 | [diff] [blame] | 1 | #include <asm/arch/dram.h> |
| 2 | #include <asm/arch/cpu.h> |
| 3 | |
| 4 | void mctl_set_timing_params(uint16_t socid, struct dram_para *para) |
| 5 | { |
| 6 | struct sunxi_mctl_ctl_reg * const mctl_ctl = |
| 7 | (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; |
| 8 | |
| 9 | u8 tccd = 2; |
| 10 | u8 tfaw = max(ns_to_t(50), 4); |
| 11 | u8 trrd = max(ns_to_t(10), 2); |
| 12 | u8 trcd = max(ns_to_t(24), 2); |
| 13 | u8 trc = ns_to_t(70); |
| 14 | u8 txp = max(ns_to_t(8), 2); |
| 15 | u8 twtr = max(ns_to_t(8), 2); |
| 16 | u8 trtp = max(ns_to_t(8), 2); |
| 17 | u8 twr = max(ns_to_t(15), 3); |
| 18 | u8 trp = max(ns_to_t(27), 2); |
| 19 | u8 tras = ns_to_t(42); |
| 20 | u16 trefi = ns_to_t(3900) / 32; |
| 21 | u16 trfc = ns_to_t(210); |
| 22 | |
| 23 | u8 tmrw = 5; |
| 24 | u8 tmrd = 5; |
| 25 | u8 tmod = 12; |
| 26 | u8 tcke = 3; |
| 27 | u8 tcksrx = 5; |
| 28 | u8 tcksre = 5; |
| 29 | u8 tckesr = 5; |
| 30 | u8 trasmax = 24; |
| 31 | |
| 32 | u8 tcl = 6; /* CL 12 */ |
| 33 | u8 tcwl = 3; /* CWL 6 */ |
| 34 | u8 t_rdata_en = 5; |
| 35 | u8 wr_latency = 2; |
| 36 | |
| 37 | u32 tdinit0 = (200 * CONFIG_DRAM_CLK) + 1; /* 200us */ |
| 38 | u32 tdinit1 = (100 * CONFIG_DRAM_CLK) / 1000 + 1; /* 100ns */ |
| 39 | u32 tdinit2 = (11 * CONFIG_DRAM_CLK) + 1; /* 11us */ |
| 40 | u32 tdinit3 = (1 * CONFIG_DRAM_CLK) + 1; /* 1us */ |
| 41 | |
| 42 | u8 twtp = tcwl + 4 + twr + 1; |
| 43 | u8 twr2rd = tcwl + 4 + 1 + twtr; |
| 44 | u8 trd2wr = tcl + 4 + 5 - tcwl + 1; |
| 45 | |
| 46 | /* set mode register */ |
| 47 | writel(0xc3, &mctl_ctl->mr[1]); /* nWR=8, BL8 */ |
| 48 | writel(0xa, &mctl_ctl->mr[2]); /* RL=12, WL=6 */ |
| 49 | writel(0x2, &mctl_ctl->mr[3]); /* 40 0hms PD/PU */ |
| 50 | |
| 51 | /* set DRAM timing */ |
| 52 | writel(DRAMTMG0_TWTP(twtp) | DRAMTMG0_TFAW(tfaw) | |
| 53 | DRAMTMG0_TRAS_MAX(trasmax) | DRAMTMG0_TRAS(tras), |
| 54 | &mctl_ctl->dramtmg[0]); |
| 55 | writel(DRAMTMG1_TXP(txp) | DRAMTMG1_TRTP(trtp) | DRAMTMG1_TRC(trc), |
| 56 | &mctl_ctl->dramtmg[1]); |
| 57 | writel(DRAMTMG2_TCWL(tcwl) | DRAMTMG2_TCL(tcl) | |
| 58 | DRAMTMG2_TRD2WR(trd2wr) | DRAMTMG2_TWR2RD(twr2rd), |
| 59 | &mctl_ctl->dramtmg[2]); |
| 60 | writel(DRAMTMG3_TMRW(tmrw) | DRAMTMG3_TMRD(tmrd) | DRAMTMG3_TMOD(tmod), |
| 61 | &mctl_ctl->dramtmg[3]); |
| 62 | writel(DRAMTMG4_TRCD(trcd) | DRAMTMG4_TCCD(tccd) | DRAMTMG4_TRRD(trrd) | |
| 63 | DRAMTMG4_TRP(trp), &mctl_ctl->dramtmg[4]); |
| 64 | writel(DRAMTMG5_TCKSRX(tcksrx) | DRAMTMG5_TCKSRE(tcksre) | |
| 65 | DRAMTMG5_TCKESR(tckesr) | DRAMTMG5_TCKE(tcke), |
| 66 | &mctl_ctl->dramtmg[5]); |
| 67 | |
| 68 | /* set two rank timing */ |
| 69 | clrsetbits_le32(&mctl_ctl->dramtmg[8], (0xff << 8) | (0xff << 0), |
| 70 | (0x66 << 8) | (0x10 << 0)); |
| 71 | |
| 72 | /* set PHY interface timing, write latency and read latency configure */ |
| 73 | writel((0x2 << 24) | (t_rdata_en << 16) | (0x1 << 8) | |
| 74 | (wr_latency << 0), &mctl_ctl->pitmg[0]); |
| 75 | |
| 76 | /* set PHY timing, PTR0-2 use default */ |
| 77 | writel(PTR3_TDINIT0(tdinit0) | PTR3_TDINIT1(tdinit1), &mctl_ctl->ptr[3]); |
| 78 | writel(PTR4_TDINIT2(tdinit2) | PTR4_TDINIT3(tdinit3), &mctl_ctl->ptr[4]); |
| 79 | |
| 80 | /* set refresh timing */ |
| 81 | writel(RFSHTMG_TREFI(trefi) | RFSHTMG_TRFC(trfc), &mctl_ctl->rfshtmg); |
| 82 | } |