ram: rk3399: Configure phy IO in ds odt

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>
Reviewed-by: Kever Yang <Kever.yang@rock-chips.com>

diff --git a/drivers/ram/rockchip/sdram_rk3399.c b/drivers/ram/rockchip/sdram_rk3399.c
index 5568ad9..cca809a 100644 (file)
--- 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;
 }