Set MR3 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 | 48 +++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+)
diff --git a/drivers/ram/rockchip/sdram_rk3399.c b/drivers/ram/rockchip/sdram_rk3399.c index 2c02c51fdf..f1fb16c130 100644 --- a/drivers/ram/rockchip/sdram_rk3399.c +++ b/drivers/ram/rockchip/sdram_rk3399.c @@ -1949,6 +1949,53 @@ static void set_lpddr4_ca_odt(const struct chan_info *chan, } }
+static void set_lpddr4_MR3(const struct chan_info *chan, + struct rk3399_sdram_params *params, u32 ctl, + 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; + + io = lpddr4_get_io_settings(params, mr5); + + reg_value = ((io->pdds << 3) | 1); + + switch (ctl) { + case 0: + clrsetbits_le32(&denali_ctl[138], 0xFFFF, reg_value); + clrsetbits_le32(&denali_ctl[152], 0xFFFF, reg_value); + + clrsetbits_le32(&denali_pi[131], 0xFFFF << 16, reg_value << 16); + clrsetbits_le32(&denali_pi[139], 0xFFFF, reg_value); + clrsetbits_le32(&denali_pi[146], 0xFFFF << 16, reg_value << 16); + clrsetbits_le32(&denali_pi[154], 0xFFFF, reg_value); + break; + case 1: + clrsetbits_le32(&denali_ctl[138], 0xFFFF << 16, + reg_value << 16); + clrsetbits_le32(&denali_ctl[152], 0xFFFF << 16, + reg_value << 16); + + clrsetbits_le32(&denali_pi[129], 0xFFFF, reg_value); + clrsetbits_le32(&denali_pi[136], 0xFFFF << 16, reg_value << 16); + clrsetbits_le32(&denali_pi[144], 0xFFFF, reg_value); + clrsetbits_le32(&denali_pi[151], 0xFFFF << 16, reg_value << 16); + break; + case 2: + default: + clrsetbits_le32(&denali_ctl[139], 0xFFFF, reg_value); + clrsetbits_le32(&denali_ctl[153], 0xFFFF, reg_value); + + clrsetbits_le32(&denali_pi[126], 0xFFFF << 16, reg_value << 16); + clrsetbits_le32(&denali_pi[134], 0xFFFF, reg_value); + clrsetbits_le32(&denali_pi[141], 0xFFFF << 16, reg_value << 16); + clrsetbits_le32(&denali_pi[149], 0xFFFF, reg_value); + break; + } +} + static void lpddr4_copy_phy(struct dram_info *dram, struct rk3399_sdram_params *params, u32 phy, struct rk3399_sdram_params *timings, @@ -2197,6 +2244,7 @@ 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); + set_lpddr4_MR3(&dram->chan[channel], timings, ctl, true, mr5);
/* * if phy_sw_master_mode_X not bypass mode,