[U-Boot] [PATCH v4 8/8] armv8: ls2088ardb: Add 3DS RDIMM support

[York Sun]

Tested with MTA72ASS8G72PSZ-2S6G1. This is 3DS RDIMM module with x4
DDR chips. LS2088ARDB needs to be modified to connect all DQS signals.
Some of them are grounded by default for x8 chips. Tested with RDIMM
MTA18ASF2G72PDZ on main memory controllers. DP-DDR doesn't support
RDIMM. Dropped related timing table.

Signed-off-by: York Sun <york.sun at nxp.com>

---

Changes in v4:
New patch to add 3DS for LS2088ARDB and drop RDIMM on DP-DDR.

Changes in v3: None
Changes in v2: None

 board/freescale/ls2080ardb/ddr.c |  2 ++
 board/freescale/ls2080ardb/ddr.h | 23 ++++-------------------
 2 files changed, 6 insertions(+), 19 deletions(-)

diff --git a/board/freescale/ls2080ardb/ddr.c b/board/freescale/ls2080ardb/ddr.c
index 01f7d82..b13a974 100644
--- a/board/freescale/ls2080ardb/ddr.c
+++ b/board/freescale/ls2080ardb/ddr.c
@@ -85,6 +85,8 @@ found:
 		pbsp->wrlvl_ctl_3);
 #ifdef CONFIG_SYS_FSL_HAS_DP_DDR
 	if (ctrl_num == CONFIG_DP_DDR_CTRL) {
+		if (popts->registered_dimm_en)
+			printf("WARN: RDIMM not supported.\n");
 		/* force DDR bus width to 32 bits */
 		popts->data_bus_width = 1;
 		popts->otf_burst_chop_en = 0;
diff --git a/board/freescale/ls2080ardb/ddr.h b/board/freescale/ls2080ardb/ddr.h
index 8d5a490..53c16f5 100644
--- a/board/freescale/ls2080ardb/ddr.h
+++ b/board/freescale/ls2080ardb/ddr.h
@@ -55,24 +55,9 @@ static const struct board_specific_parameters rdimm0[] = {
 	 *   num|  hi| rank|  clk| wrlvl |   wrlvl   |  wrlvl
 	 * ranks| mhz| GB  |adjst| start |   ctl2    |  ctl3
 	 */
-	{2,  1350, 0, 8,     6, 0x0708090B, 0x0C0D0E09,},
-	{2,  1666, 0, 8,     7, 0x08090A0C, 0x0D0F100B,},
-	{2,  1900, 0, 8,     7, 0x09090B0D, 0x0E10120B,},
-	{2,  2200, 0, 8,     8, 0x090A0C0F, 0x1012130C,},
-	{}
-};
-
-/* DP-DDR DIMM */
-static const struct board_specific_parameters rdimm2[] = {
-	/*
-	 * memory controller 2
-	 *   num|  hi| rank|  clk| wrlvl |   wrlvl   |  wrlvl
-	 * ranks| mhz| GB  |adjst| start |   ctl2    |  ctl3
-	 */
-	{2,  1350, 0, 8,     6, 0x0708090B, 0x0C0D0E09,},
-	{2,  1666, 0, 8,     7, 0x0B0A090C, 0x0D0F100B,},
-	{2,  1900, 0, 8,     7, 0x09090B0D, 0x0E10120B,},
-	{2,  2200, 0, 8,     8, 0x090A0C0F, 0x1012130C,},
+	{2,  1666, 0, 8,     0x0F, 0x0D0C0A09, 0x0B0C0E08,},
+	{2,  1900, 0, 8,     0x10, 0x0F0D0B0A, 0x0B0E0F09,},
+	{2,  2200, 0, 8,     0x13, 0x120F0E0B, 0x0D10110B,},
 	{}
 };
 
@@ -85,7 +70,7 @@ static const struct board_specific_parameters *udimms[] = {
 static const struct board_specific_parameters *rdimms[] = {
 	rdimm0,
 	rdimm0,
-	rdimm2,
+	udimm2,	/* DP-DDR doesn't support RDIMM */
 };
 
 
-- 
2.7.4