From: YouMin Chen cym@rock-chips.com
Add capacity detect for rk3399 so that the driver able to detect the capacity automatically.
Signed-off-by: YouMin Chen cym@rock-chips.com Signed-off-by: Kever Yang kever.yang@rock-chips.com ---
Changes in v3: None Changes in v2: None
drivers/ram/rockchip/sdram_rk3399.c | 236 +++++++++++++++++++++++++--- 1 file changed, 215 insertions(+), 21 deletions(-)
diff --git a/drivers/ram/rockchip/sdram_rk3399.c b/drivers/ram/rockchip/sdram_rk3399.c index db951c833c..c9f198af9b 100644 --- a/drivers/ram/rockchip/sdram_rk3399.c +++ b/drivers/ram/rockchip/sdram_rk3399.c @@ -1636,6 +1636,11 @@ static u32 calculate_ddrconfig(struct rk3399_sdram_params *params, u32 channel) return i; }
+static void set_ddr_stride(struct rk3399_pmusgrf_regs *pmusgrf, u32 stride) +{ + rk_clrsetreg(&pmusgrf->soc_con4, 0x1f << 10, stride << 10); +} + #if !defined(CONFIG_RAM_RK3399_LPDDR4) static int data_training_first(struct dram_info *dram, u32 channel, u8 rank, struct rk3399_sdram_params *params) @@ -1772,12 +1777,7 @@ static u32 get_ddr_stride(struct rk3399_pmusgrf_regs *pmusgrf) return ((readl(&pmusgrf->soc_con4) >> 10) & 0x1F); }
-static void set_ddr_stride(struct rk3399_pmusgrf_regs *pmusgrf, u32 stride) -{ - rk_clrsetreg(&pmusgrf->soc_con4, 0x1f << 10, stride << 10); -} - -/** +/* * read mr_num mode register * rank = 1: cs0 * rank = 2: cs1 @@ -2575,6 +2575,203 @@ static int lpddr4_set_rate(struct dram_info *dram, } #endif /* CONFIG_RAM_RK3399_LPDDR4 */
+/* CS0,n=1 + * CS1,n=2 + * CS0 & CS1, n=3 + * cs0_cap: MB unit + */ +static void dram_set_cs(const struct chan_info *chan, u32 cs_map, u32 cs0_cap, + unsigned char dramtype) +{ + u32 *denali_ctl = chan->pctl->denali_ctl; + u32 *denali_pi = chan->pi->denali_pi; + struct msch_regs *ddr_msch_regs = chan->msch; + + clrsetbits_le32(&denali_ctl[196], 0x3, cs_map); + writel((cs0_cap / 32) | (((4096 - cs0_cap) / 32) << 8), + &ddr_msch_regs->ddrsize); + if (dramtype == LPDDR4) { + if (cs_map == 1) + cs_map = 0x5; + else if (cs_map == 2) + cs_map = 0xa; + else + cs_map = 0xF; + } + /*PI_41 PI_CS_MAP:RW:24:4*/ + clrsetbits_le32(&denali_pi[41], + 0xf << 24, cs_map << 24); + if (cs_map == 1 && dramtype == DDR3) + writel(0x2EC7FFFF, &denali_pi[34]); +} + +static void dram_set_bw(const struct chan_info *chan, u32 bw) +{ + u32 *denali_ctl = chan->pctl->denali_ctl; + + if (bw == 2) + clrbits_le32(&denali_ctl[196], 1 << 16); + else + setbits_le32(&denali_ctl[196], 1 << 16); +} + +static void dram_set_max_col(const struct chan_info *chan, u32 bw, u32 *pcol) +{ + u32 *denali_ctl = chan->pctl->denali_ctl; + struct msch_regs *ddr_msch_regs = chan->msch; + u32 *denali_pi = chan->pi->denali_pi; + u32 ddrconfig; + + clrbits_le32(&denali_ctl[191], 0xf); + clrsetbits_le32(&denali_ctl[190], + (7 << 24), + ((16 - ((bw == 2) ? 14 : 15)) << 24)); + /*PI_199 PI_COL_DIFF:RW:0:4*/ + clrbits_le32(&denali_pi[199], 0xf); + /*PI_155 PI_ROW_DIFF:RW:24:3*/ + clrsetbits_le32(&denali_pi[155], + (7 << 24), + ((16 - 12) << 24)); + ddrconfig = (bw == 2) ? 3 : 2; + writel(ddrconfig | (ddrconfig << 8), &ddr_msch_regs->ddrconf); + /* set max cs0 size */ + writel((4096 / 32) | ((0 / 32) << 8), + &ddr_msch_regs->ddrsize); + + *pcol = 12; +} + +static void dram_set_max_bank(const struct chan_info *chan, u32 bw, u32 *pbank, + u32 *pcol) +{ + u32 *denali_ctl = chan->pctl->denali_ctl; + u32 *denali_pi = chan->pi->denali_pi; + + clrbits_le32(&denali_ctl[191], 0xf); + clrbits_le32(&denali_ctl[190], (3 << 16)); + /*PI_199 PI_COL_DIFF:RW:0:4*/ + clrbits_le32(&denali_pi[199], 0xf); + /*PI_155 PI_BANK_DIFF:RW:16:2*/ + clrbits_le32(&denali_pi[155], (3 << 16)); + + *pbank = 3; + *pcol = 12; +} + +static void dram_set_max_row(const struct chan_info *chan, u32 bw, u32 *prow, + u32 *pbank, u32 *pcol) +{ + u32 *denali_ctl = chan->pctl->denali_ctl; + u32 *denali_pi = chan->pi->denali_pi; + struct msch_regs *ddr_msch_regs = chan->msch; + + clrsetbits_le32(&denali_ctl[191], 0xf, 12 - 10); + clrbits_le32(&denali_ctl[190], + (0x3 << 16) | (0x7 << 24)); + /*PI_199 PI_COL_DIFF:RW:0:4*/ + clrsetbits_le32(&denali_pi[199], 0xf, 12 - 10); + /*PI_155 PI_ROW_DIFF:RW:24:3 PI_BANK_DIFF:RW:16:2*/ + clrbits_le32(&denali_pi[155], + (0x3 << 16) | (0x7 << 24)); + writel(1 | (1 << 8), &ddr_msch_regs->ddrconf); + /* set max cs0 size */ + writel((4096 / 32) | ((0 / 32) << 8), + &ddr_msch_regs->ddrsize); + + *prow = 16; + *pbank = 3; + *pcol = (bw == 2) ? 10 : 11; +} + +static u64 dram_detect_cap(struct dram_info *dram, + struct rk3399_sdram_params *params, + unsigned char channel) +{ + const struct chan_info *chan = &dram->chan[channel]; + struct sdram_cap_info *cap_info = ¶ms->ch[channel].cap_info; + u32 bw; + u32 col_tmp; + u32 bk_tmp; + u32 row_tmp; + u32 cs0_cap; + u32 training_flag; + u32 ddrconfig; + + /* detect bw */ + bw = 2; + if (params->base.dramtype != LPDDR4) { + dram_set_bw(chan, bw); + cap_info->bw = bw; + if (data_training(dram, channel, params, + PI_READ_GATE_TRAINING)) { + bw = 1; + dram_set_bw(chan, 1); + cap_info->bw = bw; + if (data_training(dram, channel, params, + PI_READ_GATE_TRAINING)) { + printf("16bit error!!!\n"); + goto error; + } + } + } + /* + * LPDDR3 CA training msut be trigger before other training. + * DDR3 is not have CA training. + */ + if (params->base.dramtype == LPDDR3) + training_flag = PI_WRITE_LEVELING; + else + training_flag = PI_FULL_TRAINING; + + if (params->base.dramtype != LPDDR4) { + if (data_training(dram, channel, params, training_flag)) { + printf("full training error!!!\n"); + goto error; + } + } + + /* detect col */ + dram_set_max_col(chan, bw, &col_tmp); + if (sdram_detect_col(cap_info, col_tmp) != 0) + goto error; + + /* detect bank */ + dram_set_max_bank(chan, bw, &bk_tmp, &col_tmp); + sdram_detect_bank(cap_info, col_tmp, bk_tmp); + + /* detect row */ + dram_set_max_row(chan, bw, &row_tmp, &bk_tmp, &col_tmp); + if (sdram_detect_row(cap_info, col_tmp, bk_tmp, row_tmp) != 0) + goto error; + + /* detect row_3_4 */ + sdram_detect_row_3_4(cap_info, col_tmp, bk_tmp); + + /* set ddrconfig */ + cs0_cap = (1 << (cap_info->cs0_row + cap_info->col + cap_info->bk + + cap_info->bw - 20)); + if (cap_info->row_3_4) + cs0_cap = cs0_cap * 3 / 4; + + cap_info->cs1_row = cap_info->cs0_row; + set_memory_map(chan, channel, params); + ddrconfig = calculate_ddrconfig(params, channel); + if (-1 == ddrconfig) + goto error; + set_ddrconfig(chan, params, channel, + cap_info->ddrconfig); + + /* detect cs1 row */ + sdram_detect_cs1_row(cap_info, params->base.dramtype); + + /* detect die bw */ + sdram_detect_dbw(cap_info, params->base.dramtype); + + return 0; +error: + return (-1); +} + static unsigned char calculate_stride(struct rk3399_sdram_params *params) { unsigned int stride = params->base.stride; @@ -2667,7 +2864,7 @@ static int sdram_init(struct dram_info *dram, unsigned char dramtype = params->base.dramtype; unsigned int ddr_freq = params->base.ddr_freq; int channel, ch, rank; - u32 ret; + u32 tmp, ret;
debug("Starting SDRAM initialization...\n");
@@ -2700,6 +2897,9 @@ static int sdram_init(struct dram_info *dram, if (dramtype == LPDDR3) udelay(10);
+ tmp = (rank == 2) ? 3 : 1; + dram_set_cs(&dram->chan[ch], tmp, 2048, + params->base.dramtype); params->ch[ch].cap_info.rank = rank;
ret = dram->ops->data_training_first(dram, ch, @@ -2719,10 +2919,9 @@ static int sdram_init(struct dram_info *dram, const struct chan_info *chan = &dram->chan[channel]; struct sdram_cap_info *cap_info = ¶ms->ch[channel].cap_info; - u8 training_flag = PI_FULL_TRAINING;
if (cap_info->rank == 0) { - clear_channel_params(params, channel); + clear_channel_params(params, 1); continue; } else { params->base.num_channels++; @@ -2731,19 +2930,14 @@ static int sdram_init(struct dram_info *dram, printf("Channel "); printf(channel ? "1: " : "0: ");
- /* LPDDR3 should have write and read gate training */ - if (params->base.dramtype == LPDDR3) - training_flag = PI_WRITE_LEVELING | - PI_READ_GATE_TRAINING; + if (channel == 0) + set_ddr_stride(dram->pmusgrf, 0x17); + else + set_ddr_stride(dram->pmusgrf, 0x18);
- if (params->base.dramtype != LPDDR4) { - ret = data_training(dram, channel, params, - training_flag); - if (!ret) { - debug("%s: data train failed for channel %d\n", - __func__, ret); - continue; - } + if (dram_detect_cap(dram, params, channel)) { + printf("Cap error!\n"); + continue; }
sdram_print_ddr_info(cap_info, ¶ms->base);