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| author | Dave Liu <daveliu@freescale.com> | 2008-11-21 16:31:29 +0800 |
|---|---|---|
| committer | Andrew Fleming-AFLEMING <afleming@freescale.com> | 2009-01-23 17:03:13 -0600 |
| commit | 22ff3d01348e0a2dc369b7efcbac30e4ce86d178 (patch) | |
| tree | e3ed66edb226e004cc85cdc4d4a966c55ce4f141 | |
| parent | 80ee3ce6d7fe9441b4352d7cfaf6afc2507b1106 (diff) | |
| download | u-boot-imx-22ff3d01348e0a2dc369b7efcbac30e4ce86d178.zip u-boot-imx-22ff3d01348e0a2dc369b7efcbac30e4ce86d178.tar.gz u-boot-imx-22ff3d01348e0a2dc369b7efcbac30e4ce86d178.tar.bz2 | |
fsl-ddr: clean up the ddr code for DDR3 controller
- The DDR3 controller is expanding the bits for timing config
- Add the DDR3 32-bit bus mode support
Signed-off-by: Dave Liu <daveliu@freescale.com>
Acked-by: Andy Fleming <afleming@freescale.com>
| -rw-r--r-- | cpu/mpc8xxx/ddr/ctrl_regs.c | 24 | ||||
| -rw-r--r-- | include/asm-ppc/fsl_ddr_sdram.h | 3 |
2 files changed, 16 insertions, 11 deletions
diff --git a/cpu/mpc8xxx/ddr/ctrl_regs.c b/cpu/mpc8xxx/ddr/ctrl_regs.c index d5cdc36..eae794c 100644 --- a/cpu/mpc8xxx/ddr/ctrl_regs.c +++ b/cpu/mpc8xxx/ddr/ctrl_regs.c @@ -167,7 +167,7 @@ static void set_timing_cfg_0(fsl_ddr_cfg_regs_t *ddr) | ((trrt_mclk & 0x3) << 26) /* RRT */ | ((twwt_mclk & 0x3) << 24) /* WWT */ | ((act_pd_exit_mclk & 0x7) << 20) /* ACT_PD_EXIT */ - | ((pre_pd_exit_mclk & 0x7) << 16) /* PRE_PD_EXIT */ + | ((pre_pd_exit_mclk & 0xF) << 16) /* PRE_PD_EXIT */ | ((taxpd_mclk & 0xf) << 8) /* ODT_PD_EXIT */ | ((tmrd_mclk & 0xf) << 0) /* MRS_CYC */ ); @@ -313,13 +313,13 @@ static void set_timing_cfg_2(fsl_ddr_cfg_regs_t *ddr, four_act = picos_to_mclk(popts->tFAW_window_four_activates_ps); ddr->timing_cfg_2 = (0 - | ((add_lat_mclk & 0x7) << 28) + | ((add_lat_mclk & 0xf) << 28) | ((cpo & 0x1f) << 23) - | ((wr_lat & 0x7) << 19) + | ((wr_lat & 0xf) << 19) | ((rd_to_pre & 0x7) << 13) | ((wr_data_delay & 0x7) << 10) | ((cke_pls & 0x7) << 6) - | ((four_act & 0x1f) << 0) + | ((four_act & 0x3f) << 0) ); debug("FSLDDR: timing_cfg_2 = 0x%08x\n", ddr->timing_cfg_2); } @@ -336,7 +336,7 @@ static void set_ddr_sdram_cfg(fsl_ddr_cfg_regs_t *ddr, unsigned int sdram_type; /* Type of SDRAM */ unsigned int dyn_pwr; /* Dynamic power management mode */ unsigned int dbw; /* DRAM dta bus width */ - unsigned int eight_be; /* 8-beat burst enable */ + unsigned int eight_be = 0; /* 8-beat burst enable, DDR2 is zero */ unsigned int ncap = 0; /* Non-concurrent auto-precharge */ unsigned int threeT_en; /* Enable 3T timing */ unsigned int twoT_en; /* Enable 2T timing */ @@ -363,7 +363,9 @@ static void set_ddr_sdram_cfg(fsl_ddr_cfg_regs_t *ddr, dyn_pwr = popts->dynamic_power; dbw = popts->data_bus_width; - eight_be = 0; /* always 0 for DDR2 */ + /* DDR3 must use 8-beat bursts when using 32-bit bus mode */ + if ((sdram_type == SDRAM_TYPE_DDR3) && (dbw == 0x1)) + eight_be = 1; threeT_en = popts->threeT_en; twoT_en = popts->twoT_en; ba_intlv_ctl = popts->ba_intlv_ctl; @@ -695,10 +697,10 @@ static void set_timing_cfg_5(fsl_ddr_cfg_regs_t *ddr) unsigned int wodt_off = 0; /* Write to ODT off */ ddr->timing_cfg_5 = (0 - | ((rodt_on & 0xf) << 24) - | ((rodt_off & 0xf) << 20) - | ((wodt_on & 0xf) << 12) - | ((wodt_off & 0xf) << 8) + | ((rodt_on & 0x1f) << 24) + | ((rodt_off & 0x7) << 20) + | ((wodt_on & 0x1f) << 12) + | ((wodt_off & 0x7) << 8) ); debug("FSLDDR: timing_cfg_5 = 0x%08x\n", ddr->timing_cfg_5); } @@ -748,7 +750,7 @@ static void set_ddr_wrlvl_cntl(fsl_ddr_cfg_regs_t *ddr) | ((wrlvl_dqsen & 0x7) << 16) | ((wrlvl_smpl & 0xf) << 12) | ((wrlvl_wlr & 0x7) << 8) - | ((wrlvl_start & 0xF) << 0) + | ((wrlvl_start & 0x1F) << 0) ); } diff --git a/include/asm-ppc/fsl_ddr_sdram.h b/include/asm-ppc/fsl_ddr_sdram.h index c1ea7cd..0006c21 100644 --- a/include/asm-ppc/fsl_ddr_sdram.h +++ b/include/asm-ppc/fsl_ddr_sdram.h @@ -34,7 +34,10 @@ typedef ddr2_spd_eeprom_t generic_spd_eeprom_t; #elif defined(CONFIG_FSL_DDR3) #define FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR (3) /* FIXME */ typedef ddr3_spd_eeprom_t generic_spd_eeprom_t; +#ifndef CONFIG_FSL_SDRAM_TYPE +#define CONFIG_FSL_SDRAM_TYPE SDRAM_TYPE_DDR3 #endif +#endif /* #if defined(CONFIG_FSL_DDR1) */ /* define bank(chip select) interleaving mode */ #define FSL_DDR_CS0_CS1 0x40 |