diff options
Diffstat (limited to 'drivers/ddr/imx/imx8m/ddr4_init.c')
| -rw-r--r-- | drivers/ddr/imx/imx8m/ddr4_init.c | 113 |
1 files changed, 0 insertions, 113 deletions
diff --git a/drivers/ddr/imx/imx8m/ddr4_init.c b/drivers/ddr/imx/imx8m/ddr4_init.c deleted file mode 100644 index 031cdc57e1..0000000000 --- a/drivers/ddr/imx/imx8m/ddr4_init.c +++ /dev/null @@ -1,113 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * Copyright 2018 NXP - */ - -#include <common.h> -#include <errno.h> -#include <asm/io.h> -#include <asm/arch/ddr.h> -#include <asm/arch/clock.h> -#include <asm/arch/imx8m_ddr.h> -#include <asm/arch/sys_proto.h> - -void ddr4_cfg_umctl2(struct dram_cfg_param *ddrc_cfg, int num) -{ - int i = 0; - - for (i = 0; i < num; i++) { - reg32_write(ddrc_cfg->reg, ddrc_cfg->val); - ddrc_cfg++; - } -} - -void ddr_init(struct dram_timing_info *dram_timing) -{ - volatile unsigned int tmp_t; - /* - * assert [0]ddr1_preset_n, [1]ddr1_core_reset_n, - * [2]ddr1_phy_reset, [3]ddr1_phy_pwrokin_n, - * [4]src_system_rst_b! - */ - reg32_write(SRC_DDRC_RCR_ADDR, 0x8F00003F); - /* deassert [4]src_system_rst_b! */ - reg32_write(SRC_DDRC_RCR_ADDR, 0x8F00000F); - - /* - * change the clock source of dram_apb_clk_root - * to source 4 --800MHz/4 - */ - clock_set_target_val(DRAM_APB_CLK_ROOT, CLK_ROOT_ON | - CLK_ROOT_SOURCE_SEL(4) | - CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV4)); - - dram_pll_init(DRAM_PLL_OUT_600M); - - reg32_write(0x303A00EC, 0x0000ffff); /* PGC_CPU_MAPPING */ - reg32setbit(0x303A00F8, 5); /* PU_PGC_SW_PUP_REQ */ - - /* release [0]ddr1_preset_n, [3]ddr1_phy_pwrokin_n */ - reg32_write(SRC_DDRC_RCR_ADDR, 0x8F000006); - - reg32_write(DDRC_DBG1(0), 0x00000001); - reg32_write(DDRC_PWRCTL(0), 0x00000001); - - while (0 != (0x7 & reg32_read(DDRC_STAT(0)))) - ; - - /* config the uMCTL2's registers */ - ddr4_cfg_umctl2(dram_timing->ddrc_cfg, dram_timing->ddrc_cfg_num); - - reg32_write(DDRC_RFSHCTL3(0), 0x00000001); - /* RESET: <ctn> DEASSERTED */ - /* RESET: <a Port 0 DEASSERTED(0) */ - reg32_write(SRC_DDRC_RCR_ADDR, 0x8F000004); - reg32_write(SRC_DDRC_RCR_ADDR, 0x8F000000); - - reg32_write(DDRC_DBG1(0), 0x00000000); - reg32_write(DDRC_PWRCTL(0), 0x00000aa); - reg32_write(DDRC_SWCTL(0), 0x00000000); - - reg32_write(DDRC_DFIMISC(0), 0x00000000); - - /* config the DDR PHY's registers */ - ddr_cfg_phy(dram_timing); - - do { - tmp_t = reg32_read(IP2APB_DDRPHY_IPS_BASE_ADDR(0) + - 4 * 0x00020097); - } while (tmp_t != 0); - - reg32_write(DDRC_DFIMISC(0), 0x00000020); - - /* wait DFISTAT.dfi_init_complete to 1 */ - while (0 == (0x1 & reg32_read(DDRC_DFISTAT(0)))) - ; - - /* clear DFIMISC.dfi_init_complete_en */ - reg32_write(DDRC_DFIMISC(0), 0x00000000); - /* set DFIMISC.dfi_init_complete_en again */ - reg32_write(DDRC_DFIMISC(0), 0x00000001); - reg32_write(DDRC_PWRCTL(0), 0x0000088); - - /* - * set SWCTL.sw_done to enable quasi-dynamic register - * programming outside reset. - */ - reg32_write(DDRC_SWCTL(0), 0x00000001); - /* wait SWSTAT.sw_done_ack to 1 */ - while (0 == (0x1 & reg32_read(DDRC_SWSTAT(0)))) - ; - - /* wait STAT to normal state */ - while (0x1 != (0x7 & reg32_read(DDRC_STAT(0)))) - ; - - reg32_write(DDRC_PWRCTL(0), 0x0000088); - reg32_write(DDRC_PCTRL_0(0), 0x00000001); - /* dis_auto-refresh is set to 0 */ - reg32_write(DDRC_RFSHCTL3(0), 0x00000000); - - /* save the dram timing config into memory */ - dram_config_save(dram_timing, CONFIG_SAVED_DRAM_TIMING_BASE); -} |