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ram: rk3399: Update lpddr4 vref based on io settings
The vref_mode_dq, vref_value_dq on lpddr4 value is depending on IO settings of rd_vref. Add support for it. Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> Signed-off-by: YouMin Chen <cym@rock-chips.com> Reviewed-by: Kever Yang <Kever.yang@rock-chips.com>
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4eceda01d5
commit
95be76eb5c
1 changed files with 14 additions and 5 deletions
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@ -338,7 +338,7 @@ static void set_memory_map(const struct chan_info *chan, u32 channel,
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}
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}
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static int phy_io_config(const struct chan_info *chan,
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static int phy_io_config(const struct chan_info *chan,
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const struct rk3399_sdram_params *params)
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const struct rk3399_sdram_params *params, u32 mr5)
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{
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{
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u32 *denali_phy = chan->publ->denali_phy;
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u32 *denali_phy = chan->publ->denali_phy;
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u32 vref_mode_dq, vref_value_dq, vref_mode_ac, vref_value_ac;
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u32 vref_mode_dq, vref_value_dq, vref_mode_ac, vref_value_ac;
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@ -349,9 +349,18 @@ static int phy_io_config(const struct chan_info *chan,
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/* vref setting */
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/* vref setting */
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if (params->base.dramtype == LPDDR4) {
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if (params->base.dramtype == LPDDR4) {
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/* LPDDR4 */
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struct io_setting *io = lpddr4_get_io_settings(params, mr5);
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vref_mode_dq = 0x6;
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u32 rd_vref = io->rd_vref * 1000;
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vref_value_dq = 0x1f;
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if (rd_vref < 36700) {
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/* MODE_LV[2:0] = LPDDR4 (Range 2)*/
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vref_mode_dq = 0x7;
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vref_value_dq = (rd_vref - 3300) / 521;
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} else {
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/* MODE_LV[2:0] = LPDDR4 (Range 1)*/
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vref_mode_dq = 0x6;
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vref_value_dq = (rd_vref - 15300) / 521;
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}
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vref_mode_ac = 0x6;
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vref_mode_ac = 0x6;
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vref_value_ac = 0x1f;
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vref_value_ac = 0x1f;
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mode_sel = 0x6;
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mode_sel = 0x6;
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@ -770,7 +779,7 @@ static void set_ds_odt(const struct chan_info *chan,
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/* phy_pad_fdbk_term 1bit DENALI_PHY_930 offset_17 */
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/* phy_pad_fdbk_term 1bit DENALI_PHY_930 offset_17 */
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clrsetbits_le32(&denali_phy[930], 0x1 << 17, reg_value);
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clrsetbits_le32(&denali_phy[930], 0x1 << 17, reg_value);
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phy_io_config(chan, params);
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phy_io_config(chan, params, mr5);
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}
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}
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static void pctl_start(struct dram_info *dram, u8 channel)
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static void pctl_start(struct dram_info *dram, u8 channel)
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