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authorMichael Barkowski <michael.barkowski@freescale.com>2008-03-20 13:15:34 -0400
committerKim Phillips <kim.phillips@freescale.com>2008-03-25 19:16:44 -0500
commit5bbeea86eb6afb872374cd23217cb3c1018443ed (patch)
tree788ab3805bc7a7198f9a106e9752e3c550449901 /include/configs
parentfc549c871f43933396a5b3e21d897023d4b31b8d (diff)
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mpc8323erdb: Improve the system performance
The following changes are based on kernel UCC ethernet performance: 1. Make the CSB bus pipeline depth as 4, and enable the repeat mode 2. Optimize transactions between QE and CSB. Added CFG_SPCR_OPT switch to enable this setting. The following changes are based on the App Note AN3369 and verified to improve memory latency using LMbench: 3. CS0_CONFIG[AP_n_EN] is changed from 1 to 0 4. CS0_CONFIG[ODT_WR_CONFIG] set to 1. Was a reserved setting previously. 5. TIMING_CFG_1[WRREC] is changed from 3clks to 2clks (based on Twr=15ns, and this was already the setting in DDR_MODE) 6. TIMING_CFG_1[PRETOACT] is changed from 3clks to 2clks. (based on Trp=15ns) 7. TIMING_CFG_1[ACTTOPRE] is changed from 9clks to 6clks. (based on Tras=40ns) 8. TIMING_CFG_1[ACTTORW] is changed from 3clks to 2clks. (based on Trcd=15ns) 9. TIMING_CFG_1[REFREC] changed from 21 clks to 11clks. (based on Trfc=75ns) 10. TIMING_CFG_2[FOUR_ACT] is changed from 10 clks to 7clks. (based on Tfaw=50ns) 11. TIMING_CFG_2[ADD_LAT] and DDR_MODE[AL] changed from 0 to 1 (based on CL=3 and WL=2). Signed-off-by: Michael Barkowski <michael.barkowski@freescale.com> Acked-by: Kim Phillips <kim.phillips@freescale.com>
Diffstat (limited to 'include/configs')
-rw-r--r--include/configs/MPC8323ERDB.h35
1 files changed, 21 insertions, 14 deletions
diff --git a/include/configs/MPC8323ERDB.h b/include/configs/MPC8323ERDB.h
index 53322d6..42571c7 100644
--- a/include/configs/MPC8323ERDB.h
+++ b/include/configs/MPC8323ERDB.h
@@ -66,6 +66,13 @@
#define CFG_IMMR 0xE0000000
/*
+ * System performance
+ */
+#define CFG_ACR_PIPE_DEP 3 /* Arbiter pipeline depth (0-3) */
+#define CFG_ACR_RPTCNT 3 /* Arbiter repeat count (0-7) */
+#define CFG_SPCR_OPT 1 /* (0-1) Optimize transactions between CSB and the SEC and QUICC Engine block */
+
+/*
* DDR Setup
*/
#define CFG_DDR_BASE 0x00000000 /* DDR is system memory */
@@ -83,10 +90,9 @@
*/
#define CFG_DDR_SIZE 64 /* MB */
#define CFG_DDR_CS0_CONFIG ( CSCONFIG_EN \
- | CSCONFIG_AP \
- | 0x00040000 /* TODO */ \
+ | CSCONFIG_ODT_WR_ACS \
| CSCONFIG_ROW_BIT_13 | CSCONFIG_COL_BIT_9 )
- /* 0x80840101 */
+ /* 0x80010101 */
#define CFG_DDR_TIMING_0 ( ( 0 << TIMING_CFG0_RWT_SHIFT ) \
| ( 0 << TIMING_CFG0_WRT_SHIFT ) \
| ( 0 << TIMING_CFG0_RRT_SHIFT ) \
@@ -96,28 +102,29 @@
| ( 8 << TIMING_CFG0_ODT_PD_EXIT_SHIFT ) \
| ( 2 << TIMING_CFG0_MRS_CYC_SHIFT ) )
/* 0x00220802 */
-#define CFG_DDR_TIMING_1 ( ( 3 << TIMING_CFG1_PRETOACT_SHIFT ) \
- | ( 9 << TIMING_CFG1_ACTTOPRE_SHIFT ) \
- | ( 3 << TIMING_CFG1_ACTTORW_SHIFT ) \
+#define CFG_DDR_TIMING_1 ( ( 2 << TIMING_CFG1_PRETOACT_SHIFT ) \
+ | ( 6 << TIMING_CFG1_ACTTOPRE_SHIFT ) \
+ | ( 2 << TIMING_CFG1_ACTTORW_SHIFT ) \
| ( 5 << TIMING_CFG1_CASLAT_SHIFT ) \
- | (13 << TIMING_CFG1_REFREC_SHIFT ) \
- | ( 3 << TIMING_CFG1_WRREC_SHIFT ) \
+ | ( 3 << TIMING_CFG1_REFREC_SHIFT ) \
+ | ( 2 << TIMING_CFG1_WRREC_SHIFT ) \
| ( 2 << TIMING_CFG1_ACTTOACT_SHIFT ) \
| ( 2 << TIMING_CFG1_WRTORD_SHIFT ) )
- /* 0x3935d322 */
-#define CFG_DDR_TIMING_2 ( (31 << TIMING_CFG2_CPO_SHIFT ) \
+ /* 0x26253222 */
+#define CFG_DDR_TIMING_2 ( ( 1 << TIMING_CFG2_ADD_LAT_SHIFT ) \
+ | (31 << TIMING_CFG2_CPO_SHIFT ) \
| ( 2 << TIMING_CFG2_WR_LAT_DELAY_SHIFT ) \
| ( 2 << TIMING_CFG2_RD_TO_PRE_SHIFT ) \
| ( 2 << TIMING_CFG2_WR_DATA_DELAY_SHIFT ) \
| ( 3 << TIMING_CFG2_CKE_PLS_SHIFT ) \
- | (10 << TIMING_CFG2_FOUR_ACT_SHIFT) )
- /* 0x0f9048ca */
+ | ( 7 << TIMING_CFG2_FOUR_ACT_SHIFT) )
+ /* 0x1f9048c7 */
#define CFG_DDR_TIMING_3 0x00000000
#define CFG_DDR_CLK_CNTL DDR_SDRAM_CLK_CNTL_CLK_ADJUST_05
/* 0x02000000 */
-#define CFG_DDR_MODE ( ( 0x4440 << SDRAM_MODE_ESD_SHIFT ) \
+#define CFG_DDR_MODE ( ( 0x4448 << SDRAM_MODE_ESD_SHIFT ) \
| ( 0x0232 << SDRAM_MODE_SD_SHIFT ) )
- /* 0x44400232 */
+ /* 0x44480232 */
#define CFG_DDR_MODE2 0x8000c000
#define CFG_DDR_INTERVAL ( ( 800 << SDRAM_INTERVAL_REFINT_SHIFT ) \
| ( 100 << SDRAM_INTERVAL_BSTOPRE_SHIFT ) )