diff options
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/rockchip/rk3399/sdram.c | 85 |
1 files changed, 76 insertions, 9 deletions
diff --git a/src/soc/rockchip/rk3399/sdram.c b/src/soc/rockchip/rk3399/sdram.c index c3db47bcf6..a237a80c7b 100644 --- a/src/soc/rockchip/rk3399/sdram.c +++ b/src/soc/rockchip/rk3399/sdram.c @@ -318,22 +318,86 @@ static void phy_io_config(u32 channel, const struct rk3399_sdram_params *sdram_params) { u32 *denali_phy = rk3399_ddr_publ[channel]->denali_phy; - u32 vref_mode, vref_value; + u32 vref_mode_dq, vref_value_dq, vref_mode_ac, vref_value_ac; u32 mode_sel = 0; u32 reg_value; + u32 drv_value, odt_value; /* vref setting */ - if (sdram_params->dramtype == LPDDR4) - vref_mode = 0x6; - else if (sdram_params->dramtype == LPDDR3) - vref_mode = 0x2; - else if (sdram_params->dramtype == DDR3) - vref_mode = 0x1; + if (sdram_params->dramtype == LPDDR4) { + /* LPDDR4 */ + vref_mode_dq = 0x6; + vref_value_dq = 0x1f; + vref_mode_ac = 0x6; + vref_value_ac = 0x1f; + } else if (sdram_params->dramtype == LPDDR3) { + if (sdram_params->odt == 1) { + vref_mode_dq = 0x5; /* LPDDR3 ODT */ + drv_value = (read32(&denali_phy[6]) >> 12) & 0xf; + odt_value = (read32(&denali_phy[6]) >> 4) & 0xf; + if (drv_value == PHY_DRV_ODT_48) { + switch (odt_value) { + case PHY_DRV_ODT_240: + vref_value_dq = 0x16; + break; + case PHY_DRV_ODT_120: + vref_value_dq = 0x26; + break; + case PHY_DRV_ODT_60: + vref_value_dq = 0x36; + break; + default: + die("Halting: Invalid ODT value.\n"); + } + } else if (drv_value == PHY_DRV_ODT_40) { + switch (odt_value) { + case PHY_DRV_ODT_240: + vref_value_dq = 0x19; + break; + case PHY_DRV_ODT_120: + vref_value_dq = 0x23; + break; + case PHY_DRV_ODT_60: + vref_value_dq = 0x31; + break; + default: + die("Halting: Invalid ODT value.\n"); + } + } else if (drv_value == PHY_DRV_ODT_34_3) { + switch (odt_value) { + case PHY_DRV_ODT_240: + vref_value_dq = 0x17; + break; + case PHY_DRV_ODT_120: + vref_value_dq = 0x20; + break; + case PHY_DRV_ODT_60: + vref_value_dq = 0x2e; + break; + default: + die("Halting: Invalid ODT value.\n"); + } + } else { + die("Halting: Invalid DRV value.\n"); + } + } else { + vref_mode_dq = 0x2; /* LPDDR3 */ + vref_value_dq = 0x1f; + } + vref_mode_ac = 0x2; + vref_value_ac = 0x1f; + } else if (sdram_params->dramtype == DDR3) { + /* DDR3L */ + vref_mode_dq = 0x1; + vref_value_dq = 0x1f; + vref_mode_ac = 0x1; + vref_value_ac = 0x1f; + } else die("Halting: Unknown DRAM type.\n"); - vref_value = 0x1f; - reg_value = (vref_mode << 9) | (0x1 << 8) | vref_value; + reg_value = (vref_mode_dq << 9) | (0x1 << 8) | vref_value_dq; + /* PHY_913 PHY_PAD_VREF_CTRL_DQ_0 12bits offset_8 */ clrsetbits_le32(&denali_phy[913], 0xfff << 8, reg_value << 8); /* PHY_914 PHY_PAD_VREF_CTRL_DQ_1 12bits offset_0 */ @@ -342,6 +406,9 @@ static void phy_io_config(u32 channel, clrsetbits_le32(&denali_phy[914], 0xfff << 16, reg_value << 16); /* PHY_915 PHY_PAD_VREF_CTRL_DQ_3 12bits offset_0 */ clrsetbits_le32(&denali_phy[915], 0xfff, reg_value); + + reg_value = (vref_mode_ac << 9) | (0x1 << 8) | vref_value_ac; + /* PHY_915 PHY_PAD_VREF_CTRL_AC 12bits offset_16 */ clrsetbits_le32(&denali_phy[915], 0xfff << 16, reg_value << 16); |