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author | Peter Korsgaard <peter.korsgaard@barco.com> | 2012-10-18 01:21:12 +0000 |
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committer | Tom Rini <trini@ti.com> | 2012-10-25 11:31:38 -0700 |
commit | c00f69dbcd4a5e59d381274743b78e62485c5e4a (patch) | |
tree | 951c031b10215d5dec5edfb81fb8e0a8520d2e30 /board/ti/am335x/board.c | |
parent | 7f26a5a26f2c24a29a120702f2607e99ac8e1fef (diff) | |
download | u-boot-imx-c00f69dbcd4a5e59d381274743b78e62485c5e4a.zip u-boot-imx-c00f69dbcd4a5e59d381274743b78e62485c5e4a.tar.gz u-boot-imx-c00f69dbcd4a5e59d381274743b78e62485c5e4a.tar.bz2 |
am33xx: support board specific ddr settings
Move the hardcoded ddr2/ddr3 settings for the ti boards to board code,
so other boards can use different types/timings.
Signed-off-by: Peter Korsgaard <peter.korsgaard@barco.com>
[trini: Make apply with rtc32k_enable() in the file]
Signed-off-by: Tom Rini <trini@ti.com>
Diffstat (limited to 'board/ti/am335x/board.c')
-rw-r--r-- | board/ti/am335x/board.c | 89 |
1 files changed, 77 insertions, 12 deletions
diff --git a/board/ti/am335x/board.c b/board/ti/am335x/board.c index 5279d1a..309a425 100644 --- a/board/ti/am335x/board.c +++ b/board/ti/am335x/board.c @@ -131,19 +131,79 @@ static void rtc32k_enable(void) /* Enable the RTC 32K OSC by setting bits 3 and 6. */ writel((1 << 3) | (1 << 6), &rtc->osc); } -#endif -/* - * Determine what type of DDR we have. - */ -static short inline board_memory_type(void) -{ - /* The following boards are known to use DDR3. */ - if (board_is_evm_sk() || board_is_bone_lt()) - return EMIF_REG_SDRAM_TYPE_DDR3; +static const struct ddr_data ddr2_data = { + .datardsratio0 = ((DDR2_RD_DQS<<30)|(DDR2_RD_DQS<<20) + |(DDR2_RD_DQS<<10)|(DDR2_RD_DQS<<0)), + .datawdsratio0 = ((DDR2_WR_DQS<<30)|(DDR2_WR_DQS<<20) + |(DDR2_WR_DQS<<10)|(DDR2_WR_DQS<<0)), + .datawiratio0 = ((DDR2_PHY_WRLVL<<30)|(DDR2_PHY_WRLVL<<20) + |(DDR2_PHY_WRLVL<<10)|(DDR2_PHY_WRLVL<<0)), + .datagiratio0 = ((DDR2_PHY_GATELVL<<30)|(DDR2_PHY_GATELVL<<20) + |(DDR2_PHY_GATELVL<<10)|(DDR2_PHY_GATELVL<<0)), + .datafwsratio0 = ((DDR2_PHY_FIFO_WE<<30)|(DDR2_PHY_FIFO_WE<<20) + |(DDR2_PHY_FIFO_WE<<10)|(DDR2_PHY_FIFO_WE<<0)), + .datawrsratio0 = ((DDR2_PHY_WR_DATA<<30)|(DDR2_PHY_WR_DATA<<20) + |(DDR2_PHY_WR_DATA<<10)|(DDR2_PHY_WR_DATA<<0)), + .datauserank0delay = DDR2_PHY_RANK0_DELAY, + .datadldiff0 = PHY_DLL_LOCK_DIFF, +}; - return EMIF_REG_SDRAM_TYPE_DDR2; -} +static const struct cmd_control ddr2_cmd_ctrl_data = { + .cmd0csratio = DDR2_RATIO, + .cmd0dldiff = DDR2_DLL_LOCK_DIFF, + .cmd0iclkout = DDR2_INVERT_CLKOUT, + + .cmd1csratio = DDR2_RATIO, + .cmd1dldiff = DDR2_DLL_LOCK_DIFF, + .cmd1iclkout = DDR2_INVERT_CLKOUT, + + .cmd2csratio = DDR2_RATIO, + .cmd2dldiff = DDR2_DLL_LOCK_DIFF, + .cmd2iclkout = DDR2_INVERT_CLKOUT, +}; + +static const struct emif_regs ddr2_emif_reg_data = { + .sdram_config = DDR2_EMIF_SDCFG, + .ref_ctrl = DDR2_EMIF_SDREF, + .sdram_tim1 = DDR2_EMIF_TIM1, + .sdram_tim2 = DDR2_EMIF_TIM2, + .sdram_tim3 = DDR2_EMIF_TIM3, + .emif_ddr_phy_ctlr_1 = DDR2_EMIF_READ_LATENCY, +}; + +static const struct ddr_data ddr3_data = { + .datardsratio0 = DDR3_RD_DQS, + .datawdsratio0 = DDR3_WR_DQS, + .datafwsratio0 = DDR3_PHY_FIFO_WE, + .datawrsratio0 = DDR3_PHY_WR_DATA, + .datadldiff0 = PHY_DLL_LOCK_DIFF, +}; + +static const struct cmd_control ddr3_cmd_ctrl_data = { + .cmd0csratio = DDR3_RATIO, + .cmd0dldiff = DDR3_DLL_LOCK_DIFF, + .cmd0iclkout = DDR3_INVERT_CLKOUT, + + .cmd1csratio = DDR3_RATIO, + .cmd1dldiff = DDR3_DLL_LOCK_DIFF, + .cmd1iclkout = DDR3_INVERT_CLKOUT, + + .cmd2csratio = DDR3_RATIO, + .cmd2dldiff = DDR3_DLL_LOCK_DIFF, + .cmd2iclkout = DDR3_INVERT_CLKOUT, +}; + +static struct emif_regs ddr3_emif_reg_data = { + .sdram_config = DDR3_EMIF_SDCFG, + .ref_ctrl = DDR3_EMIF_SDREF, + .sdram_tim1 = DDR3_EMIF_TIM1, + .sdram_tim2 = DDR3_EMIF_TIM2, + .sdram_tim3 = DDR3_EMIF_TIM3, + .zq_config = DDR3_ZQ_CFG, + .emif_ddr_phy_ctlr_1 = DDR3_EMIF_READ_LATENCY, +}; +#endif /* * early system init of muxing and clocks. @@ -204,7 +264,12 @@ void s_init(void) gpio_direction_output(GPIO_DDR_VTT_EN, 1); } - config_ddr(board_memory_type()); + if (board_is_evm_sk() || board_is_bone_lt()) + config_ddr(303, DDR3_IOCTRL_VALUE, &ddr3_data, + &ddr3_cmd_ctrl_data, &ddr3_emif_reg_data); + else + config_ddr(266, DDR2_IOCTRL_VALUE, &ddr2_data, + &ddr2_cmd_ctrl_data, &ddr2_emif_reg_data); #endif } |