powerpc/83xx/km: update SDRAM parameters for km8321 boards

Measurements during HW basic test showed, that the SDRAM timing
has to be optimized. This patch adapted these timings accordingly.

Signed-off-by: Marco Schmid <marco.schmid@keymile.com>
Signed-off-by: Holger Brunck <holger.brunck@keymile.com>
cc: Valentin Longchamp <valentin.longchamp@keymile.com>
Acked-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>

include/configs/km/km8321-common.h

@@ -70,7 +70,8 @@
 #define CONFIG_SYS_DDR_CS0_BNDS		0x0000007f
 #define CONFIG_SYS_DDR_SDRAM_CFG	(SDRAM_CFG_SDRAM_TYPE_DDR2 | \
 					 SDRAM_CFG_32_BE | \
-					 SDRAM_CFG_SREN)
+					 SDRAM_CFG_SREN | \
+					 SDRAM_CFG_HSE)
 
 #define CONFIG_SYS_DDR_SDRAM_CFG2	0x00401000
 #define CONFIG_SYS_DDR_CLK_CNTL		(DDR_SDRAM_CLK_CNTL_CLK_ADJUST_05)
@@ -82,7 +83,7 @@
 					 CSCONFIG_ROW_BIT_13 | \
 					 CSCONFIG_COL_BIT_10)
 
-#define CONFIG_SYS_DDR_MODE	0x47860252
+#define CONFIG_SYS_DDR_MODE	0x47860242
 #define CONFIG_SYS_DDR_MODE2	0x8080c000
 
 #define CONFIG_SYS_DDR_TIMING_0	((2 << TIMING_CFG0_MRS_CYC_SHIFT) | \
@@ -94,20 +95,20 @@
 				 (0 << TIMING_CFG0_WRT_SHIFT) | \
 				 (0 << TIMING_CFG0_RWT_SHIFT))
 
-#define CONFIG_SYS_DDR_TIMING_1	((TIMING_CFG1_CASLAT_50) | \
+#define CONFIG_SYS_DDR_TIMING_1	((TIMING_CFG1_CASLAT_40) | \
 				 (2 << TIMING_CFG1_WRTORD_SHIFT) | \
 				 (2 << TIMING_CFG1_ACTTOACT_SHIFT) | \
-				 (2 << TIMING_CFG1_WRREC_SHIFT) | \
-				 (6 << TIMING_CFG1_REFREC_SHIFT) | \
-				 (2 << TIMING_CFG1_ACTTORW_SHIFT) | \
-				 (6 << TIMING_CFG1_ACTTOPRE_SHIFT) | \
-				 (2 << TIMING_CFG1_PRETOACT_SHIFT))
+				 (3 << TIMING_CFG1_WRREC_SHIFT) | \
+				 (7 << TIMING_CFG1_REFREC_SHIFT) | \
+				 (3 << TIMING_CFG1_ACTTORW_SHIFT) | \
+				 (7 << TIMING_CFG1_ACTTOPRE_SHIFT) | \
+				 (3 << TIMING_CFG1_PRETOACT_SHIFT))
 
 #define CONFIG_SYS_DDR_TIMING_2	((8 << TIMING_CFG2_FOUR_ACT_SHIFT) | \
 				 (3 << TIMING_CFG2_CKE_PLS_SHIFT) | \
 				 (2 << TIMING_CFG2_WR_DATA_DELAY_SHIFT) | \
 				 (2 << TIMING_CFG2_RD_TO_PRE_SHIFT) | \
-				 (4 << TIMING_CFG2_WR_LAT_DELAY_SHIFT) | \
+				 (3 << TIMING_CFG2_WR_LAT_DELAY_SHIFT) | \
 				 (0 << TIMING_CFG2_ADD_LAT_SHIFT) | \
 				 (5 << TIMING_CFG2_CPO_SHIFT))
 
@@ -122,7 +123,10 @@
 /*
  * Local Bus Configuration & Clock Setup
  */
-#define CONFIG_SYS_LCRR		(LCRR_DBYP | LCRR_EADC_1 | LCRR_CLKDIV_2)
+#define CONFIG_SYS_LCRR_DBYP	0x80000000
+#define CONFIG_SYS_LCRR_EADC	0x00010000
+#define CONFIG_SYS_LCRR_CLKDIV	0x00000002
+
 #define CONFIG_SYS_LBC_LBCR	0x00000000
 
 /*