[PATCH 86/92] ram: rk3399: Set lpddr4 ca odt

Jagan Teki
2019-06-11T14:51:29Z

Set CA ODT based identified controller in lpddr4
as part of LPDDR set rate initialization phase.

Signed-off-by: Jagan Teki <jagan-dyjBcgdgk7Pe9wHmmfpqLFaTQe2KTcn/@public.gmane.org>
Signed-off-by: YouMin Chen <cym-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
---
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,
--
2.18.0.321.gffc6fa0e3