diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/rockchip/rk3399/sdram.c | 70 |
1 files changed, 40 insertions, 30 deletions
diff --git a/src/soc/rockchip/rk3399/sdram.c b/src/soc/rockchip/rk3399/sdram.c index 9dce649b6f..132759aa20 100644 --- a/src/soc/rockchip/rk3399/sdram.c +++ b/src/soc/rockchip/rk3399/sdram.c @@ -820,13 +820,46 @@ static int data_training_rl(u32 channel, const struct rk3399_sdram_params *param return 0; } +static int data_training_wdql(u32 channel, const struct rk3399_sdram_params *params) +{ + u32 *denali_pi = rk3399_ddr_pi[channel]->denali_pi; + u32 rank = params->ch[channel].rank; + u32 i, tmp; + + for (i = 0; i < rank; i++) { + select_per_cs_training_index(channel, i); + /* + * disable PI_WDQLVL_VREF_EN before wdq leveling? + * PI_181 PI_WDQLVL_VREF_EN:RW:8:1 + */ + clrbits32(&denali_pi[181], 0x1 << 8); + /* PI_124 PI_WDQLVL_EN:RW:16:2 */ + clrsetbits32(&denali_pi[124], 0x3 << 16, 0x2 << 16); + /* PI_121 PI_WDQLVL_REQ:WR:8:1,PI_WDQLVL_CS:RW:16:2 */ + clrsetbits32(&denali_pi[121], (0x1 << 8) | (0x3 << 16), (0x1 << 8) | (i << 16)); + + while (1) { + /* PI_174 PI_INT_STATUS:RD:8:18 */ + tmp = read32(&denali_pi[174]) >> 8; + if ((((tmp >> 12) & 0x1) == 0x1) && (((tmp >> 13) & 0x1) == 0x1) + && (((tmp >> 6) & 0x1) == 0x0)) + break; + else if (((tmp >> 6) & 0x1) == 0x1) + return -1; + } + /* clear interrupt,PI_175 PI_INT_ACK:WR:0:17 */ + write32((&denali_pi[175]), 0x00003f7c); + } + clrbits32(&denali_pi[124], 0x3 << 16); + + return 0; +} + + static int data_training(u32 channel, const struct rk3399_sdram_params *params, u32 training_flag) { - u32 *denali_pi = rk3399_ddr_pi[channel]->denali_pi; u32 *denali_phy = rk3399_ddr_publ[channel]->denali_phy; - u32 i, tmp; - u32 rank = params->ch[channel].rank; int ret; /* PHY_927 PHY_PAD_DQS_DRIVE RPULL offset_22 */ @@ -885,34 +918,11 @@ static int data_training(u32 channel, const struct rk3399_sdram_params *params, /* wdq leveling(LPDDR4 support) */ if ((training_flag & PI_WDQ_LEVELING) == PI_WDQ_LEVELING) { - for (i = 0; i < rank; i++) { - select_per_cs_training_index(channel, i); - /* - * disable PI_WDQLVL_VREF_EN before wdq leveling? - * PI_181 PI_WDQLVL_VREF_EN:RW:8:1 - */ - clrbits32(&denali_pi[181], 0x1 << 8); - /* PI_124 PI_WDQLVL_EN:RW:16:2 */ - clrsetbits32(&denali_pi[124], 0x3 << 16, 0x2 << 16); - /* PI_121 PI_WDQLVL_REQ:WR:8:1,PI_WDQLVL_CS:RW:16:2 */ - clrsetbits32(&denali_pi[121], - (0x1 << 8) | (0x3 << 16), - (0x1 << 8) | (i << 16)); - - while (1) { - /* PI_174 PI_INT_STATUS:RD:8:18 */ - tmp = read32(&denali_pi[174]) >> 8; - if ((((tmp >> 12) & 0x1) == 0x1) && - (((tmp >> 13) & 0x1) == 0x1) && - (((tmp >> 6) & 0x1) == 0x0)) - break; - else if (((tmp >> 6) & 0x1) == 0x1) - return -1; - } - /* clear interrupt,PI_175 PI_INT_ACK:WR:0:17 */ - write32((&denali_pi[175]), 0x00003f7c); + ret = data_training_wdql(channel, params); + if (ret) { + printk(BIOS_ERR, "WDQL training failed\n"); + return ret; } - clrbits32(&denali_pi[124], 0x3 << 16); } /* PHY_927 PHY_PAD_DQS_DRIVE RPULL offset_22 */ |