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| author | Jyri Sarha <jsarha@ti.com> | 2016-12-09 10:29:13 (GMT) |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2016-12-09 20:00:03 (GMT) |
| commit | 8c17cbdf8a8023abdd0009af4dc9dbc0541b4a0f (patch) | |
| tree | e6d601b384d2575eb5b3f1f8e91231a18835b39c /board/ti/am335x/board.c | |
| parent | 177f14da7f610ec26d3ab0aea2c8a75e2bfefa3a (diff) | |
| download | u-boot-fsl-qoriq-8c17cbdf8a8023abdd0009af4dc9dbc0541b4a0f.tar.xz | |
arm: am33xx: Initialize EMIF REG_PR_OLD_COUNT for BBB and am335x-evm
Initialize EMIF OCP_CONFIG registers REG_COS_COUNT_1, REG_COS_COUNT_2,
and REG_PR_OLD_COUNT field for Beaglebone-Black and am335x-evm. With
the default values LCDC suffers from DMA FIFO underflows and frame
synchronization lost errors. The initialization values are the highest
that work flawlessly when heavy memory load is generated by CPU. 32bpp
colors were used in the test. On BBB the video mode used 110MHz pixel
clock. The mode supported by the panel of am335x-evm uses 30MHz pixel
clock.
Signed-off-by: Jyri Sarha <jsarha@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Diffstat (limited to 'board/ti/am335x/board.c')
| -rw-r--r-- | board/ti/am335x/board.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/board/ti/am335x/board.c b/board/ti/am335x/board.c index 111ed35..8eaf3e9 100644 --- a/board/ti/am335x/board.c +++ b/board/ti/am335x/board.c @@ -109,6 +109,16 @@ static const struct emif_regs ddr2_emif_reg_data = { .emif_ddr_phy_ctlr_1 = MT47H128M16RT25E_EMIF_READ_LATENCY, }; +static const struct emif_regs ddr2_evm_emif_reg_data = { + .sdram_config = MT47H128M16RT25E_EMIF_SDCFG, + .ref_ctrl = MT47H128M16RT25E_EMIF_SDREF, + .sdram_tim1 = MT47H128M16RT25E_EMIF_TIM1, + .sdram_tim2 = MT47H128M16RT25E_EMIF_TIM2, + .sdram_tim3 = MT47H128M16RT25E_EMIF_TIM3, + .ocp_config = EMIF_OCP_CONFIG_AM335X_EVM, + .emif_ddr_phy_ctlr_1 = MT47H128M16RT25E_EMIF_READ_LATENCY, +}; + static const struct ddr_data ddr3_data = { .datardsratio0 = MT41J128MJT125_RD_DQS, .datawdsratio0 = MT41J128MJT125_WR_DQS, @@ -198,6 +208,7 @@ static struct emif_regs ddr3_beagleblack_emif_reg_data = { .sdram_tim1 = MT41K256M16HA125E_EMIF_TIM1, .sdram_tim2 = MT41K256M16HA125E_EMIF_TIM2, .sdram_tim3 = MT41K256M16HA125E_EMIF_TIM3, + .ocp_config = EMIF_OCP_CONFIG_BEAGLEBONE_BLACK, .zq_config = MT41K256M16HA125E_ZQ_CFG, .emif_ddr_phy_ctlr_1 = MT41K256M16HA125E_EMIF_READ_LATENCY, }; @@ -208,6 +219,7 @@ static struct emif_regs ddr3_evm_emif_reg_data = { .sdram_tim1 = MT41J512M8RH125_EMIF_TIM1, .sdram_tim2 = MT41J512M8RH125_EMIF_TIM2, .sdram_tim3 = MT41J512M8RH125_EMIF_TIM3, + .ocp_config = EMIF_OCP_CONFIG_AM335X_EVM, .zq_config = MT41J512M8RH125_ZQ_CFG, .emif_ddr_phy_ctlr_1 = MT41J512M8RH125_EMIF_READ_LATENCY | PHY_EN_DYN_PWRDN, @@ -486,6 +498,9 @@ void sdram_init(void) config_ddr(400, &ioregs_evmsk, &ddr3_icev2_data, &ddr3_icev2_cmd_ctrl_data, &ddr3_icev2_emif_reg_data, 0); + else if (board_is_gp_evm()) + config_ddr(266, &ioregs, &ddr2_data, + &ddr2_cmd_ctrl_data, &ddr2_evm_emif_reg_data, 0); else config_ddr(266, &ioregs, &ddr2_data, &ddr2_cmd_ctrl_data, &ddr2_emif_reg_data, 0); |