diff options
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/rockchip/rk3288/sdram.c | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/src/soc/rockchip/rk3288/sdram.c b/src/soc/rockchip/rk3288/sdram.c index d330f99d6e..cda36be05d 100644 --- a/src/soc/rockchip/rk3288/sdram.c +++ b/src/soc/rockchip/rk3288/sdram.c @@ -998,12 +998,29 @@ void sdram_init(const struct rk3288_sdram_params *sdram_params) writel(POWER_UP_START, &ddr_pctl_regs->powctl); while (!(readl(&ddr_pctl_regs->powstat) & POWER_UP_DONE)) ; - send_command(ddr_pctl_regs, 3, DESELECT_CMD, 0); - udelay(1); - send_command(ddr_pctl_regs, 3, PREA_CMD, 0); memory_init(ddr_publ_regs, sdram_params->dramtype); move_to_config_state(ddr_publ_regs, ddr_pctl_regs); + + if (sdram_params->dramtype == LPDDR3) { + send_command(ddr_pctl_regs, 3, DESELECT_CMD, 0); + udelay(1); + send_command(ddr_pctl_regs, 3, PREA_CMD, 0); + udelay(1); + send_command(ddr_pctl_regs, 3, MRS_CMD, LPDDR2_MA(63) | + LPDDR2_OP(0xFC)); + udelay(1); + send_command(ddr_pctl_regs, 3, MRS_CMD, LPDDR2_MA(1) | + LPDDR2_OP(sdram_params->phy_timing.mr[1])); + udelay(1); + send_command(ddr_pctl_regs, 3, MRS_CMD, LPDDR2_MA(2) | + LPDDR2_OP(sdram_params->phy_timing.mr[2])); + udelay(1); + send_command(ddr_pctl_regs, 3, MRS_CMD, LPDDR2_MA(3) | + LPDDR2_OP(sdram_params->phy_timing.mr[3])); + udelay(1); + } + set_bandwidth_ratio(channel, sdram_params->ch[channel].bw); /* * set cs |