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| author | Michael Barkowski <michael.barkowski@freescale.com> | 2008-03-20 13:15:34 -0400 |
|---|---|---|
| committer | Kim Phillips <kim.phillips@freescale.com> | 2008-03-25 19:16:44 -0500 |
| commit | 5bbeea86eb6afb872374cd23217cb3c1018443ed (patch) | |
| tree | 788ab3805bc7a7198f9a106e9752e3c550449901 /include/configs | |
| parent | fc549c871f43933396a5b3e21d897023d4b31b8d (diff) | |
| download | u-boot-imx-5bbeea86eb6afb872374cd23217cb3c1018443ed.zip u-boot-imx-5bbeea86eb6afb872374cd23217cb3c1018443ed.tar.gz u-boot-imx-5bbeea86eb6afb872374cd23217cb3c1018443ed.tar.bz2 | |
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.h | 35 |
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 ) ) |