Some dramtypes like lpddr4 initialization would required to configure phy IO even after pctl_cfg and after set_ds_odt.
For those cases the set_ds_odt would be an initial call to setup the phy.
To satisfy all the cases, trigger phy IO from set_ds_odt.
Signed-off-by: Jagan Teki jagan@amarulasolutions.com --- drivers/ram/rockchip/sdram_rk3399.c | 327 ++++++++++++++-------------- 1 file changed, 162 insertions(+), 165 deletions(-)
diff --git a/drivers/ram/rockchip/sdram_rk3399.c b/drivers/ram/rockchip/sdram_rk3399.c index d5ff17ad4f..7f01681a01 100644 --- a/drivers/ram/rockchip/sdram_rk3399.c +++ b/drivers/ram/rockchip/sdram_rk3399.c @@ -188,6 +188,166 @@ static void set_memory_map(const struct chan_info *chan, u32 channel, writel(0x2EC7FFFF, &denali_pi[34]); }
+static int phy_io_config(const struct chan_info *chan, + const struct rk3399_sdram_params *params) +{ + u32 *denali_phy = chan->publ->denali_phy; + u32 vref_mode_dq, vref_value_dq, vref_mode_ac, vref_value_ac; + u32 mode_sel; + u32 reg_value; + u32 drv_value, odt_value; + u32 speed; + + /* vref setting */ + if (params->base.dramtype == LPDDR4) { + /* LPDDR4 */ + vref_mode_dq = 0x6; + vref_value_dq = 0x1f; + vref_mode_ac = 0x6; + vref_value_ac = 0x1f; + } else if (params->base.dramtype == LPDDR3) { + if (params->base.odt == 1) { + vref_mode_dq = 0x5; /* LPDDR3 ODT */ + drv_value = (readl(&denali_phy[6]) >> 12) & 0xf; + odt_value = (readl(&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: + debug("Invalid ODT value.\n"); + return -EINVAL; + } + } 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: + debug("Invalid ODT value.\n"); + return -EINVAL; + } + } 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: + debug("Invalid ODT value.\n"); + return -EINVAL; + } + } else { + debug("Invalid DRV value.\n"); + return -EINVAL; + } + } else { + vref_mode_dq = 0x2; /* LPDDR3 */ + vref_value_dq = 0x1f; + } + vref_mode_ac = 0x2; + vref_value_ac = 0x1f; + } else if (params->base.dramtype == DDR3) { + /* DDR3L */ + vref_mode_dq = 0x1; + vref_value_dq = 0x1f; + vref_mode_ac = 0x1; + vref_value_ac = 0x1f; + } else { + debug("Unknown DRAM type.\n"); + return -EINVAL; + } + + 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 */ + clrsetbits_le32(&denali_phy[914], 0xfff, reg_value); + /* PHY_914 PHY_PAD_VREF_CTRL_DQ_2 12bits offset_16 */ + 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); + + if (params->base.dramtype == LPDDR4) + mode_sel = 0x6; + else if (params->base.dramtype == LPDDR3) + mode_sel = 0x0; + else if (params->base.dramtype == DDR3) + mode_sel = 0x1; + else + return -EINVAL; + + /* PHY_924 PHY_PAD_FDBK_DRIVE */ + clrsetbits_le32(&denali_phy[924], 0x7 << 15, mode_sel << 15); + /* PHY_926 PHY_PAD_DATA_DRIVE */ + clrsetbits_le32(&denali_phy[926], 0x7 << 6, mode_sel << 6); + /* PHY_927 PHY_PAD_DQS_DRIVE */ + clrsetbits_le32(&denali_phy[927], 0x7 << 6, mode_sel << 6); + /* PHY_928 PHY_PAD_ADDR_DRIVE */ + clrsetbits_le32(&denali_phy[928], 0x7 << 14, mode_sel << 14); + /* PHY_929 PHY_PAD_CLK_DRIVE */ + clrsetbits_le32(&denali_phy[929], 0x7 << 14, mode_sel << 14); + /* PHY_935 PHY_PAD_CKE_DRIVE */ + clrsetbits_le32(&denali_phy[935], 0x7 << 14, mode_sel << 14); + /* PHY_937 PHY_PAD_RST_DRIVE */ + clrsetbits_le32(&denali_phy[937], 0x7 << 14, mode_sel << 14); + /* PHY_939 PHY_PAD_CS_DRIVE */ + clrsetbits_le32(&denali_phy[939], 0x7 << 14, mode_sel << 14); + + /* speed setting */ + if (params->base.ddr_freq < 400) + speed = 0x0; + else if (params->base.ddr_freq < 800) + speed = 0x1; + else if (params->base.ddr_freq < 1200) + speed = 0x2; + else + speed = 0x3; + + /* PHY_924 PHY_PAD_FDBK_DRIVE */ + clrsetbits_le32(&denali_phy[924], 0x3 << 21, speed << 21); + /* PHY_926 PHY_PAD_DATA_DRIVE */ + clrsetbits_le32(&denali_phy[926], 0x3 << 9, speed << 9); + /* PHY_927 PHY_PAD_DQS_DRIVE */ + clrsetbits_le32(&denali_phy[927], 0x3 << 9, speed << 9); + /* PHY_928 PHY_PAD_ADDR_DRIVE */ + clrsetbits_le32(&denali_phy[928], 0x3 << 17, speed << 17); + /* PHY_929 PHY_PAD_CLK_DRIVE */ + clrsetbits_le32(&denali_phy[929], 0x3 << 17, speed << 17); + /* PHY_935 PHY_PAD_CKE_DRIVE */ + clrsetbits_le32(&denali_phy[935], 0x3 << 17, speed << 17); + /* PHY_937 PHY_PAD_RST_DRIVE */ + clrsetbits_le32(&denali_phy[937], 0x3 << 17, speed << 17); + /* PHY_939 PHY_PAD_CS_DRIVE */ + clrsetbits_le32(&denali_phy[939], 0x3 << 17, speed << 17); + + return 0; +} + static void set_ds_odt(const struct chan_info *chan, const struct rk3399_sdram_params *params) { @@ -332,6 +492,8 @@ static void set_ds_odt(const struct chan_info *chan,
/* phy_pad_fdbk_term 1bit DENALI_PHY_930 offset_17 */ clrsetbits_le32(&denali_phy[930], 0x1 << 17, reg_value); + + phy_io_config(chan, params); }
static void pctl_start(struct dram_info *dram, u8 channel) @@ -376,166 +538,6 @@ static void pctl_start(struct dram_info *dram, u8 channel) dram->pwrup_srefresh_exit[channel]); }
-static int phy_io_config(const struct chan_info *chan, - const struct rk3399_sdram_params *params) -{ - u32 *denali_phy = chan->publ->denali_phy; - u32 vref_mode_dq, vref_value_dq, vref_mode_ac, vref_value_ac; - u32 mode_sel; - u32 reg_value; - u32 drv_value, odt_value; - u32 speed; - - /* vref setting */ - if (params->base.dramtype == LPDDR4) { - /* LPDDR4 */ - vref_mode_dq = 0x6; - vref_value_dq = 0x1f; - vref_mode_ac = 0x6; - vref_value_ac = 0x1f; - } else if (params->base.dramtype == LPDDR3) { - if (params->base.odt == 1) { - vref_mode_dq = 0x5; /* LPDDR3 ODT */ - drv_value = (readl(&denali_phy[6]) >> 12) & 0xf; - odt_value = (readl(&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: - debug("Invalid ODT value.\n"); - return -EINVAL; - } - } 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: - debug("Invalid ODT value.\n"); - return -EINVAL; - } - } 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: - debug("Invalid ODT value.\n"); - return -EINVAL; - } - } else { - debug("Invalid DRV value.\n"); - return -EINVAL; - } - } else { - vref_mode_dq = 0x2; /* LPDDR3 */ - vref_value_dq = 0x1f; - } - vref_mode_ac = 0x2; - vref_value_ac = 0x1f; - } else if (params->base.dramtype == DDR3) { - /* DDR3L */ - vref_mode_dq = 0x1; - vref_value_dq = 0x1f; - vref_mode_ac = 0x1; - vref_value_ac = 0x1f; - } else { - debug("Unknown DRAM type.\n"); - return -EINVAL; - } - - 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 */ - clrsetbits_le32(&denali_phy[914], 0xfff, reg_value); - /* PHY_914 PHY_PAD_VREF_CTRL_DQ_2 12bits offset_16 */ - 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); - - if (params->base.dramtype == LPDDR4) - mode_sel = 0x6; - else if (params->base.dramtype == LPDDR3) - mode_sel = 0x0; - else if (params->base.dramtype == DDR3) - mode_sel = 0x1; - else - return -EINVAL; - - /* PHY_924 PHY_PAD_FDBK_DRIVE */ - clrsetbits_le32(&denali_phy[924], 0x7 << 15, mode_sel << 15); - /* PHY_926 PHY_PAD_DATA_DRIVE */ - clrsetbits_le32(&denali_phy[926], 0x7 << 6, mode_sel << 6); - /* PHY_927 PHY_PAD_DQS_DRIVE */ - clrsetbits_le32(&denali_phy[927], 0x7 << 6, mode_sel << 6); - /* PHY_928 PHY_PAD_ADDR_DRIVE */ - clrsetbits_le32(&denali_phy[928], 0x7 << 14, mode_sel << 14); - /* PHY_929 PHY_PAD_CLK_DRIVE */ - clrsetbits_le32(&denali_phy[929], 0x7 << 14, mode_sel << 14); - /* PHY_935 PHY_PAD_CKE_DRIVE */ - clrsetbits_le32(&denali_phy[935], 0x7 << 14, mode_sel << 14); - /* PHY_937 PHY_PAD_RST_DRIVE */ - clrsetbits_le32(&denali_phy[937], 0x7 << 14, mode_sel << 14); - /* PHY_939 PHY_PAD_CS_DRIVE */ - clrsetbits_le32(&denali_phy[939], 0x7 << 14, mode_sel << 14); - - /* speed setting */ - if (params->base.ddr_freq < 400) - speed = 0x0; - else if (params->base.ddr_freq < 800) - speed = 0x1; - else if (params->base.ddr_freq < 1200) - speed = 0x2; - else - speed = 0x3; - - /* PHY_924 PHY_PAD_FDBK_DRIVE */ - clrsetbits_le32(&denali_phy[924], 0x3 << 21, speed << 21); - /* PHY_926 PHY_PAD_DATA_DRIVE */ - clrsetbits_le32(&denali_phy[926], 0x3 << 9, speed << 9); - /* PHY_927 PHY_PAD_DQS_DRIVE */ - clrsetbits_le32(&denali_phy[927], 0x3 << 9, speed << 9); - /* PHY_928 PHY_PAD_ADDR_DRIVE */ - clrsetbits_le32(&denali_phy[928], 0x3 << 17, speed << 17); - /* PHY_929 PHY_PAD_CLK_DRIVE */ - clrsetbits_le32(&denali_phy[929], 0x3 << 17, speed << 17); - /* PHY_935 PHY_PAD_CKE_DRIVE */ - clrsetbits_le32(&denali_phy[935], 0x3 << 17, speed << 17); - /* PHY_937 PHY_PAD_RST_DRIVE */ - clrsetbits_le32(&denali_phy[937], 0x3 << 17, speed << 17); - /* PHY_939 PHY_PAD_CS_DRIVE */ - clrsetbits_le32(&denali_phy[939], 0x3 << 17, speed << 17); - - return 0; -} - static int pctl_cfg(struct dram_info *dram, const struct chan_info *chan, u32 channel, const struct rk3399_sdram_params *params) { @@ -545,7 +547,6 @@ static int pctl_cfg(struct dram_info *dram, const struct chan_info *chan, const u32 *params_ctl = params->pctl_regs.denali_ctl; const u32 *params_phy = params->phy_regs.denali_phy; u32 tmp, tmp1, tmp2; - int ret;
/* * work around controller bug: @@ -623,10 +624,6 @@ static int pctl_cfg(struct dram_info *dram, const struct chan_info *chan, tmp = (readl(&denali_phy[467]) >> 16) & 0xff; clrsetbits_le32(&denali_phy[467], 0xff << 16, (tmp + 0x10) << 16);
- ret = phy_io_config(chan, params); - if (ret) - return ret; - return 0; }