From: YouMin Chen cym@rock-chips.com
There are some code different with rockchip vendor code which may lead to different bugs, including: 1) Fix setting error about LPDDR3 dram size ODT. 2) Set phy io speed to 0x2. 3) Fix setting error about phy_pad_fdbk_drive. 4) Fix setting error about PI_WDQLVL_VREF_EN
Signed-off-by: YouMin Chen cym@rock-chips.com Signed-off-by: Kever Yang kever.yang@rock-chips.com ---
Changes in v3: - update commit message
Changes in v2: - Split the patches into multi smaller patches for easy to maintain, review and test; - Keep the DRAM_ROCKCHIP_DEBUG macro and enable it by default; - Update the rockchip_sdram_size to support sys_reg3;
drivers/ram/rockchip/sdram_rk3399.c | 41 ++++++++++++++--------------- 1 file changed, 20 insertions(+), 21 deletions(-)
diff --git a/drivers/ram/rockchip/sdram_rk3399.c b/drivers/ram/rockchip/sdram_rk3399.c index 47552fa946..7b2bba03fe 100644 --- a/drivers/ram/rockchip/sdram_rk3399.c +++ b/drivers/ram/rockchip/sdram_rk3399.c @@ -44,6 +44,11 @@ #define CS0_MR22_VAL 0 #define CS1_MR22_VAL 3
+/* LPDDR3 DRAM DS */ +#define LPDDR3_DS_34 0x1 +#define LPDDR3_DS_40 0x2 +#define LPDDR3_DS_48 0x3 + #define CRU_SFTRST_DDR_CTRL(ch, n) ((0x1 << (8 + 16 + (ch) * 4)) | \ ((n) << (8 + (ch) * 4))) #define CRU_SFTRST_DDR_PHY(ch, n) ((0x1 << (9 + 16 + (ch) * 4)) | \ @@ -291,7 +296,8 @@ static void set_memory_map(const struct chan_info *chan, u32 channel, if (sdram_ch->cap_info.ddrconfig < 2 || sdram_ch->cap_info.ddrconfig == 4) row = 16; - else if (sdram_ch->cap_info.ddrconfig == 3) + else if (sdram_ch->cap_info.ddrconfig == 3 || + sdram_ch->cap_info.ddrconfig == 5) row = 14; else row = 15; @@ -335,11 +341,12 @@ static int phy_io_config(const struct chan_info *chan, const struct rk3399_sdram_params *params, u32 mr5) { u32 *denali_phy = chan->publ->denali_phy; + u32 *denali_ctl = chan->pctl->denali_ctl; 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; + u32 reg_value; + u32 ds_value, odt_value;
/* vref setting & mode setting */ if (params->base.dramtype == LPDDR4) { @@ -365,12 +372,12 @@ static int phy_io_config(const struct chan_info *chan, } 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; + ds_value = readl(&denali_ctl[138]) & 0xf; odt_value = (readl(&denali_phy[6]) >> 4) & 0xf; - if (drv_value == PHY_DRV_ODT_48) { + if (ds_value == LPDDR3_DS_48) { switch (odt_value) { case PHY_DRV_ODT_240: - vref_value_dq = 0x16; + vref_value_dq = 0x1B; break; case PHY_DRV_ODT_120: vref_value_dq = 0x26; @@ -382,7 +389,7 @@ static int phy_io_config(const struct chan_info *chan, debug("Invalid ODT value.\n"); return -EINVAL; } - } else if (drv_value == PHY_DRV_ODT_40) { + } else if (ds_value == LPDDR3_DS_40) { switch (odt_value) { case PHY_DRV_ODT_240: vref_value_dq = 0x19; @@ -397,7 +404,7 @@ static int phy_io_config(const struct chan_info *chan, debug("Invalid ODT value.\n"); return -EINVAL; } - } else if (drv_value == PHY_DRV_ODT_34_3) { + } else if (ds_value == LPDDR3_DS_34) { switch (odt_value) { case PHY_DRV_ODT_240: vref_value_dq = 0x17; @@ -509,14 +516,7 @@ static int phy_io_config(const struct chan_info *chan, }
/* 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; + speed = 0x2;
/* PHY_924 PHY_PAD_FDBK_DRIVE */ clrsetbits_le32(&denali_phy[924], 0x3 << 21, speed << 21); @@ -739,9 +739,9 @@ static void set_ds_odt(const struct chan_info *chan,
/* phy_pad_fdbk_drive 23bit DENALI_PHY_924/925 */ clrsetbits_le32(&denali_phy[924], 0xff, - tsel_wr_select_dq_n | (tsel_wr_select_dq_p << 4)); + tsel_wr_select_ca_n | (tsel_wr_select_ca_p << 4)); clrsetbits_le32(&denali_phy[925], 0xff, - tsel_rd_select_n | (tsel_rd_select_p << 4)); + tsel_wr_select_dq_n | (tsel_wr_select_dq_p << 4));
/* phy_dq_tsel_enable_X 3bits DENALI_PHY_5/133/261/389 offset_16 */ reg_value = (tsel_rd_en | (tsel_wr_en << 1) | (tsel_idle_en << 2)) @@ -1340,10 +1340,9 @@ static int data_training_wdql(const struct chan_info *chan, u32 channel,
/* * disable PI_WDQLVL_VREF_EN before wdq leveling? - * PI_181 PI_WDQLVL_VREF_EN:RW:8:1 + * PI_117 PI_WDQLVL_VREF_EN:RW:8:1 */ - clrbits_le32(&denali_pi[181], 0x1 << 8); - + clrbits_le32(&denali_pi[117], 0x1 << 8); /* PI_124 PI_WDQLVL_EN:RW:16:2 */ clrsetbits_le32(&denali_pi[124], 0x3 << 16, 0x2 << 16);