Set CA ODT based identified controller in lpddr4 as part of LPDDR set rate initialization phase.
Signed-off-by: Jagan Teki jagan@amarulasolutions.com Signed-off-by: YouMin Chen cym@rock-chips.com --- drivers/ram/rockchip/sdram_rk3399.c | 49 +++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+)
diff --git a/drivers/ram/rockchip/sdram_rk3399.c b/drivers/ram/rockchip/sdram_rk3399.c index fc9958de17..2c02c51fdf 100644 --- a/drivers/ram/rockchip/sdram_rk3399.c +++ b/drivers/ram/rockchip/sdram_rk3399.c @@ -1901,6 +1901,54 @@ static void set_lpddr4_dq_odt(const struct chan_info *chan, } }
+static void set_lpddr4_ca_odt(const struct chan_info *chan, + struct rk3399_sdram_params *params, u32 ctl, + bool en, bool ctl_phy_reg, u32 mr5) +{ + u32 *denali_ctl = get_denali_ctl(chan, params, ctl_phy_reg); + u32 *denali_pi = get_denali_pi(chan, params, ctl_phy_reg); + struct io_setting *io; + u32 reg_value; + + if (!en) + return; + + io = lpddr4_get_io_settings(params, mr5); + + reg_value = io->ca_odt; + + switch (ctl) { + case 0: + clrsetbits_le32(&denali_ctl[139], 0x7 << 28, reg_value << 28); + clrsetbits_le32(&denali_ctl[153], 0x7 << 28, reg_value << 28); + + clrsetbits_le32(&denali_pi[132], 0x7 << 4, reg_value << 4); + clrsetbits_le32(&denali_pi[139], 0x7 << 20, reg_value << 20); + clrsetbits_le32(&denali_pi[147], 0x7 << 4, reg_value << 4); + clrsetbits_le32(&denali_pi[154], 0x7 << 20, reg_value << 20); + break; + case 1: + clrsetbits_le32(&denali_ctl[140], 0x7 << 4, reg_value << 4); + clrsetbits_le32(&denali_ctl[154], 0x7 << 4, reg_value << 4); + + clrsetbits_le32(&denali_pi[129], 0x7 << 20, reg_value << 20); + clrsetbits_le32(&denali_pi[137], 0x7 << 4, reg_value << 4); + clrsetbits_le32(&denali_pi[144], 0x7 << 20, reg_value << 20); + clrsetbits_le32(&denali_pi[152], 0x7 << 4, reg_value << 4); + break; + case 2: + default: + clrsetbits_le32(&denali_ctl[140], 0x7 << 12, (reg_value << 12)); + clrsetbits_le32(&denali_ctl[154], 0x7 << 12, (reg_value << 12)); + + clrsetbits_le32(&denali_pi[127], 0x7 << 4, reg_value << 4); + clrsetbits_le32(&denali_pi[134], 0x7 << 20, reg_value << 20); + clrsetbits_le32(&denali_pi[142], 0x7 << 4, reg_value << 4); + clrsetbits_le32(&denali_pi[149], 0x7 << 20, reg_value << 20); + break; + } +} + static void lpddr4_copy_phy(struct dram_info *dram, struct rk3399_sdram_params *params, u32 phy, struct rk3399_sdram_params *timings, @@ -2148,6 +2196,7 @@ static void lpddr4_copy_phy(struct dram_info *dram,
ctl = lpddr4_get_ctl(timings, phy); set_lpddr4_dq_odt(&dram->chan[channel], timings, ctl, true, true, mr5); + set_lpddr4_ca_odt(&dram->chan[channel], timings, ctl, true, true, mr5);
/* * if phy_sw_master_mode_X not bypass mode,