[PATCH 22/26] imx8m: ddr: Disable CA VREF Training for LPDDR4

[Peng Fan (OSS)]

From: Ye Li <ye.li at nxp.com>

Users reported LPDDR4 MR12 value is set to 0 during PHY training,
not the value from FSP timing structure, which cause compliance test failed.
The root cause is the CATrainOpt[0] is set to 1 in 2D FSP timing
but not set in 1D.  According to PHY training application node,
to enable the feature both 1D and 2D need set this field to 1,
otherwise the training result will be incorrect.
The PHY training doc also recommends to set CATrainOpt[0] to 0 to use
MR12 value from message block (FSP structure). So update the LPDDR4
scripts of all mscale to clear CATrainOpt[0].

Signed-off-by: Ye Li <ye.li at nxp.com>
Reviewed-by: Jacky Bai <ping.bai at nxp.com>
Signed-off-by: Peng Fan <peng.fan at nxp.com>
---
 board/freescale/imx8mn_evk/lpddr4_timing_ld.c | 1 -
 board/freescale/imx8mp_evk/lpddr4_timing.c    | 2 --
 2 files changed, 3 deletions(-)

diff --git a/board/freescale/imx8mn_evk/lpddr4_timing_ld.c b/board/freescale/imx8mn_evk/lpddr4_timing_ld.c
index 5faa0021a7..aa23c35094 100644
--- a/board/freescale/imx8mn_evk/lpddr4_timing_ld.c
+++ b/board/freescale/imx8mn_evk/lpddr4_timing_ld.c
@@ -799,7 +799,6 @@ struct dram_cfg_param ddr_fsp0_2d_cfg[] = {
 	{ 0x54008, 0x61 },
 	{ 0x54009, 0xc8 },
 	{ 0x5400b, 0x2 },
-	{ 0x5400d, 0x100 },
 	{ 0x5400f, 0x100 },
 	{ 0x54010, 0x1f7f },
 	{ 0x54012, 0x310 },
diff --git a/board/freescale/imx8mp_evk/lpddr4_timing.c b/board/freescale/imx8mp_evk/lpddr4_timing.c
index 9d069fc27a..8c5306d5d2 100755
--- a/board/freescale/imx8mp_evk/lpddr4_timing.c
+++ b/board/freescale/imx8mp_evk/lpddr4_timing.c
@@ -1298,7 +1298,6 @@ struct dram_cfg_param ddr_fsp0_2d_cfg[] = {
 	{ 0x54008, 0x61 },
 	{ 0x54009, 0xc8 },
 	{ 0x5400b, 0x2 },
-	{ 0x5400d, 0x100 },
 	{ 0x5400f, 0x100 },
 	{ 0x54010, 0x1f7f },
 	{ 0x54012, 0x310 },
@@ -1330,7 +1329,6 @@ struct dram_cfg_param ddr_fsp0_2d_cfg[] = {
 	{ 0x54008, 0x61 },
 	{ 0x54009, 0xc8 },
 	{ 0x5400b, 0x2 },
-	{ 0x5400d, 0x100 },
 	{ 0x5400f, 0x100 },
 	{ 0x54010, 0x1f7f },
 	{ 0x54012, 0x310 },
-- 
2.30.0