diff options
Diffstat (limited to 'board/freescale/t102xqds/ddr.c')
| -rw-r--r-- | board/freescale/t102xqds/ddr.c | 195 |
1 files changed, 0 insertions, 195 deletions
diff --git a/board/freescale/t102xqds/ddr.c b/board/freescale/t102xqds/ddr.c deleted file mode 100644 index c27cecd5aa..0000000000 --- a/board/freescale/t102xqds/ddr.c +++ /dev/null @@ -1,195 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * Copyright 2014 Freescale Semiconductor, Inc. - */ - -#include <common.h> -#include <i2c.h> -#include <hwconfig.h> -#include <init.h> -#include <log.h> -#include <asm/mmu.h> -#include <fsl_ddr_sdram.h> -#include <fsl_ddr_dimm_params.h> -#include <asm/fsl_law.h> -#include <asm/mpc85xx_gpio.h> -#include <linux/delay.h> - -DECLARE_GLOBAL_DATA_PTR; - -struct board_specific_parameters { - u32 n_ranks; - u32 datarate_mhz_high; - u32 rank_gb; - u32 clk_adjust; - u32 wrlvl_start; - u32 wrlvl_ctl_2; - u32 wrlvl_ctl_3; -}; - -/* - * datarate_mhz_high values need to be in ascending order - */ -static const struct board_specific_parameters udimm0[] = { - /* - * memory controller 0 - * num| hi| rank| clk| wrlvl | wrlvl | wrlvl | - * ranks| mhz| GB |adjst| start | ctl2 | ctl3 | - */ -#if defined(CONFIG_SYS_FSL_DDR4) - {2, 1666, 0, 8, 7, 0x0808090B, 0x0C0D0E0A,}, - {2, 1900, 0, 8, 6, 0x08080A0C, 0x0D0E0F0A,}, - {1, 1666, 0, 8, 6, 0x0708090B, 0x0C0D0E09,}, - {1, 1900, 0, 8, 6, 0x08080A0C, 0x0D0E0F0A,}, - {1, 2200, 0, 8, 7, 0x08090A0D, 0x0F0F100C,}, -#elif defined(CONFIG_SYS_FSL_DDR3) - {2, 833, 0, 8, 6, 0x06060607, 0x08080807,}, - {2, 1350, 0, 8, 7, 0x0708080A, 0x0A0B0C09,}, - {2, 1666, 0, 8, 7, 0x0808090B, 0x0C0D0E0A,}, - {1, 833, 0, 8, 6, 0x06060607, 0x08080807,}, - {1, 1350, 0, 8, 7, 0x0708080A, 0x0A0B0C09,}, - {1, 1666, 0, 8, 7, 0x0808090B, 0x0C0D0E0A,}, -#else -#error DDR type not defined -#endif - {} -}; - -static const struct board_specific_parameters *udimms[] = { - udimm0, -}; - -void fsl_ddr_board_options(memctl_options_t *popts, - dimm_params_t *pdimm, - unsigned int ctrl_num) -{ - const struct board_specific_parameters *pbsp, *pbsp_highest = NULL; - ulong ddr_freq; - struct cpu_type *cpu = gd->arch.cpu; - - if (ctrl_num > 2) { - printf("Not supported controller number %d\n", ctrl_num); - return; - } - if (!pdimm->n_ranks) - return; - - pbsp = udimms[0]; - - /* Get clk_adjust according to the board ddr freqency and n_banks - * specified in board_specific_parameters table. - */ - ddr_freq = get_ddr_freq(0) / 1000000; - while (pbsp->datarate_mhz_high) { - if (pbsp->n_ranks == pdimm->n_ranks && - (pdimm->rank_density >> 30) >= pbsp->rank_gb) { - if (ddr_freq <= pbsp->datarate_mhz_high) { - popts->clk_adjust = pbsp->clk_adjust; - popts->wrlvl_start = pbsp->wrlvl_start; - popts->wrlvl_ctl_2 = pbsp->wrlvl_ctl_2; - popts->wrlvl_ctl_3 = pbsp->wrlvl_ctl_3; - goto found; - } - pbsp_highest = pbsp; - } - pbsp++; - } - - if (pbsp_highest) { - printf("Error: board specific timing not found\n"); - printf("for data rate %lu MT/s\n", ddr_freq); - printf("Trying to use the highest speed (%u) parameters\n", - pbsp_highest->datarate_mhz_high); - popts->clk_adjust = pbsp_highest->clk_adjust; - popts->wrlvl_start = pbsp_highest->wrlvl_start; - popts->wrlvl_ctl_2 = pbsp->wrlvl_ctl_2; - popts->wrlvl_ctl_3 = pbsp->wrlvl_ctl_3; - } else { - panic("DIMM is not supported by this board"); - } -found: - debug("Found timing match: n_ranks %d, data rate %d, rank_gb %d\n", - pbsp->n_ranks, pbsp->datarate_mhz_high, pbsp->rank_gb); - debug("\tclk_adjust %d, wrlvl_start %d, wrlvl_ctrl_2 0x%x, ", - pbsp->clk_adjust, pbsp->wrlvl_start, pbsp->wrlvl_ctl_2); - debug("wrlvl_ctrl_3 0x%x\n", pbsp->wrlvl_ctl_3); - - /* - * Factors to consider for half-strength driver enable: - * - number of DIMMs installed - */ - popts->half_strength_driver_enable = 1; - /* - * Write leveling override - */ - popts->wrlvl_override = 1; - popts->wrlvl_sample = 0xf; - - /* - * rtt and rtt_wr override - */ - popts->rtt_override = 0; - - /* Enable ZQ calibration */ - popts->zq_en = 1; - - /* DHC_EN =1, ODT = 75 Ohm */ -#ifdef CONFIG_SYS_FSL_DDR4 - popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_80ohm); - popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_80ohm) | - DDR_CDR2_VREF_OVRD(70); /* Vref = 70% */ -#else - popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_75ohm); - popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_75ohm); - - /* optimize cpo for erratum A-009942 */ - popts->cpo_sample = 0x5f; -#endif - - /* T1023 supports max DDR bus 32bit width, T1024 supports DDR 64bit, - * set DDR bus width to 32bit for T1023 - */ - if (cpu->soc_ver == SVR_T1023) - popts->data_bus_width = DDR_DATA_BUS_WIDTH_32; - -#ifdef CONFIG_FORCE_DDR_DATA_BUS_WIDTH_32 - /* for DDR bus 32bit test on T1024 */ - popts->data_bus_width = DDR_DATA_BUS_WIDTH_32; -#endif -} - -#if defined(CONFIG_DEEP_SLEEP) -void board_mem_sleep_setup(void) -{ - void __iomem *qixis_base = (void *)QIXIS_BASE; - - /* does not provide HW signals for power management */ - clrbits_8(qixis_base + 0x21, 0x2); - /* Disable MCKE isolation */ - gpio_set_value(2, 0); - udelay(1); -} -#endif - -int dram_init(void) -{ - phys_size_t dram_size; - -#if defined(CONFIG_SPL_BUILD) || !defined(CONFIG_RAMBOOT_PBL) - puts("Initializing....using SPD\n"); - dram_size = fsl_ddr_sdram(); -#else - /* DDR has been initialised by first stage boot loader */ - dram_size = fsl_ddr_sdram_size(); -#endif - dram_size = setup_ddr_tlbs(dram_size / 0x100000); - dram_size *= 0x100000; - -#if defined(CONFIG_DEEP_SLEEP) && !defined(CONFIG_SPL_BUILD) - fsl_dp_resume(); -#endif - - gd->ram_size = dram_size; - - return 0; -} |