[U-Boot] [PATCH V2 32/51] driver: ddr: Refine the ddr init driver on imx8m
Peng Fan
peng.fan at nxp.com
Mon Jul 8 01:40:00 UTC 2019
From: Jacky Bai <ping.bai at nxp.com>
Refine the ddr init driver to make it more reusable for different
DDR type(LPDDR4, DDR4 & DDR3L). So we can reduce some redundant
code.
Signed-off-by: Jacky Bai <ping.bai at nxp.com>
Reviewed-by: Ye Li <ye.li at nxp.com>
Signed-off-by: Peng Fan <peng.fan at nxp.com>
---
drivers/ddr/imx/imx8m/Kconfig | 6 ++
drivers/ddr/imx/imx8m/Makefile | 4 +-
drivers/ddr/imx/imx8m/ddr4_init.c | 112 --------------------
drivers/ddr/imx/imx8m/ddr_init.c | 168 ++++++++++++++++++++++++++++++
drivers/ddr/imx/imx8m/ddrphy_utils.c | 4 +
drivers/ddr/imx/imx8m/helper.c | 10 +-
drivers/ddr/imx/imx8m/lpddr4_init.c | 191 -----------------------------------
7 files changed, 184 insertions(+), 311 deletions(-)
delete mode 100644 drivers/ddr/imx/imx8m/ddr4_init.c
create mode 100644 drivers/ddr/imx/imx8m/ddr_init.c
delete mode 100644 drivers/ddr/imx/imx8m/lpddr4_init.c
diff --git a/drivers/ddr/imx/imx8m/Kconfig b/drivers/ddr/imx/imx8m/Kconfig
index a83b0f43d7..5bf61eb258 100644
--- a/drivers/ddr/imx/imx8m/Kconfig
+++ b/drivers/ddr/imx/imx8m/Kconfig
@@ -16,6 +16,12 @@ config IMX8M_DDR4
help
Select the i.MX8M DDR4 driver support on i.MX8M SOC.
+config IMX8M_DDR3L
+ bool "imx8m ddr3l"
+ select IMX8M_DRAM
+ help
+ Select the i.MX8M DDR3L driver support on i.MX8M SOC.
+
config SAVED_DRAM_TIMING_BASE
hex "Define the base address for saved dram timing"
help
diff --git a/drivers/ddr/imx/imx8m/Makefile b/drivers/ddr/imx/imx8m/Makefile
index 64f9ab20e6..bd9bcb8d53 100644
--- a/drivers/ddr/imx/imx8m/Makefile
+++ b/drivers/ddr/imx/imx8m/Makefile
@@ -5,7 +5,5 @@
#
ifdef CONFIG_SPL_BUILD
-obj-$(CONFIG_IMX8M_DRAM) += helper.o ddrphy_utils.o ddrphy_train.o ddrphy_csr.o
-obj-$(CONFIG_IMX8M_LPDDR4) += lpddr4_init.o
-obj-$(CONFIG_IMX8M_DDR4) += ddr4_init.o
+obj-$(CONFIG_IMX8M_DRAM) += helper.o ddrphy_utils.o ddrphy_train.o ddrphy_csr.o ddr_init.o
endif
diff --git a/drivers/ddr/imx/imx8m/ddr4_init.c b/drivers/ddr/imx/imx8m/ddr4_init.c
deleted file mode 100644
index b8aa104536..0000000000
--- a/drivers/ddr/imx/imx8m/ddr4_init.c
+++ /dev/null
@@ -1,112 +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/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(MHZ(600));
-
- 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);
-}
diff --git a/drivers/ddr/imx/imx8m/ddr_init.c b/drivers/ddr/imx/imx8m/ddr_init.c
new file mode 100644
index 0000000000..12967583ea
--- /dev/null
+++ b/drivers/ddr/imx/imx8m/ddr_init.c
@@ -0,0 +1,168 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2018-2019 NXP
+ */
+
+#include <common.h>
+#include <errno.h>
+#include <asm/io.h>
+#include <asm/arch/ddr.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/sys_proto.h>
+
+void ddr_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)
+{
+ unsigned int tmp, initial_drate, target_freq;
+
+ printf("DDRINFO: start DRAM init\n");
+
+ /* Step1: Follow the power up procedure */
+ if (is_imx8mq()) {
+ reg32_write(SRC_DDRC_RCR_ADDR + 0x04, 0x8F00000F);
+ reg32_write(SRC_DDRC_RCR_ADDR, 0x8F00000F);
+ reg32_write(SRC_DDRC_RCR_ADDR + 0x04, 0x8F000000);
+ } else {
+ reg32_write(SRC_DDRC_RCR_ADDR, 0x8F00001F);
+ reg32_write(SRC_DDRC_RCR_ADDR, 0x8F00000F);
+ }
+
+ debug("DDRINFO: cfg clk\n");
+ /* change the clock source of dram_apb_clk_root: source 4 800MHz /4 = 200MHz */
+ clock_set_target_val(DRAM_APB_CLK_ROOT, CLK_ROOT_ON | CLK_ROOT_SOURCE_SEL(4) |
+ CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV4));
+
+ initial_drate = dram_timing->fsp_msg[0].drate;
+ /* default to the frequency point 0 clock */
+ ddrphy_init_set_dfi_clk(initial_drate);
+
+ /* disable iso */
+ reg32_write(0x303A00EC, 0x0000ffff); /* PGC_CPU_MAPPING */
+ reg32setbit(0x303A00F8, 5); /* PU_PGC_SW_PUP_REQ */
+
+ /* D-aasert the presetn */
+ reg32_write(SRC_DDRC_RCR_ADDR, 0x8F000006);
+
+ /* Step2: Program the dwc_ddr_umctl2 registers */
+ debug("DDRINFO: ddrc config start\n");
+ ddr_cfg_umctl2(dram_timing->ddrc_cfg, dram_timing->ddrc_cfg_num);
+ debug("DDRINFO: ddrc config done\n");
+
+ /* Step3: De-assert reset signal(core_ddrc_rstn & aresetn_n) */
+ reg32_write(SRC_DDRC_RCR_ADDR, 0x8F000004);
+ reg32_write(SRC_DDRC_RCR_ADDR, 0x8F000000);
+
+ /*
+ * Step4: Disable auto-refreshes, self-refresh, powerdown, and
+ * assertion of dfi_dram_clk_disable by setting RFSHCTL3.dis_auto_refresh = 1,
+ * PWRCTL.powerdown_en = 0, and PWRCTL.selfref_en = 0, PWRCTL.en_dfi_dram_clk_disable = 0
+ */
+ reg32_write(DDRC_DBG1(0), 0x00000000);
+ reg32_write(DDRC_RFSHCTL3(0), 0x0000001);
+ reg32_write(DDRC_PWRCTL(0), 0xa0);
+
+ /* if ddr type is LPDDR4, do it */
+ tmp = reg32_read(DDRC_MSTR(0));
+ if (tmp & (0x1 << 5))
+ reg32_write(DDRC_DDR_SS_GPR0, 0x01); /* LPDDR4 mode */
+
+ /* determine the initial boot frequency */
+ target_freq = reg32_read(DDRC_MSTR2(0)) & 0x3;
+ target_freq = (tmp & (0x1 << 29)) ? target_freq : 0x0;
+
+ /* Step5: Set SWCT.sw_done to 0 */
+ reg32_write(DDRC_SWCTL(0), 0x00000000);
+
+ /* Set the default boot frequency point */
+ clrsetbits_le32(DDRC_DFIMISC(0), (0x1f << 8), target_freq << 8);
+ /* Step6: Set DFIMISC.dfi_init_complete_en to 0 */
+ clrbits_le32(DDRC_DFIMISC(0), 0x1);
+
+ /* Step7: Set SWCTL.sw_done to 1; need to polling SWSTAT.sw_done_ack */
+ reg32_write(DDRC_SWCTL(0), 0x00000001);
+ do {
+ tmp = reg32_read(DDRC_SWSTAT(0));
+ } while ((tmp & 0x1) == 0x0);
+
+ /*
+ * Step8 ~ Step13: Start PHY initialization and training by
+ * accessing relevant PUB registers
+ */
+ debug("DDRINFO:ddrphy config start\n");
+ ddr_cfg_phy(dram_timing);
+ debug("DDRINFO: ddrphy config done\n");
+
+ /*
+ * step14 CalBusy.0 =1, indicates the calibrator is actively
+ * calibrating. Wait Calibrating done.
+ */
+ do {
+ tmp = reg32_read(DDRPHY_CalBusy(0));
+ } while ((tmp & 0x1));
+
+ printf("DDRINFO:ddrphy calibration done\n");
+
+ /* Step15: Set SWCTL.sw_done to 0 */
+ reg32_write(DDRC_SWCTL(0), 0x00000000);
+
+ /* Step16: Set DFIMISC.dfi_init_start to 1 */
+ setbits_le32(DDRC_DFIMISC(0), (0x1 << 5));
+
+ /* Step17: Set SWCTL.sw_done to 1; need to polling SWSTAT.sw_done_ack */
+ reg32_write(DDRC_SWCTL(0), 0x00000001);
+ do {
+ tmp = reg32_read(DDRC_SWSTAT(0));
+ } while ((tmp & 0x1) == 0x0);
+
+ /* Step18: Polling DFISTAT.dfi_init_complete = 1 */
+ do {
+ tmp = reg32_read(DDRC_DFISTAT(0));
+ } while ((tmp & 0x1) == 0x0);
+
+ /* Step19: Set SWCTL.sw_done to 0 */
+ reg32_write(DDRC_SWCTL(0), 0x00000000);
+
+ /* Step20: Set DFIMISC.dfi_init_start to 0 */
+ clrbits_le32(DDRC_DFIMISC(0), (0x1 << 5));
+
+ /* Step21: optional */
+
+ /* Step22: Set DFIMISC.dfi_init_complete_en to 1 */
+ setbits_le32(DDRC_DFIMISC(0), 0x1);
+
+ /* Step23: Set PWRCTL.selfref_sw to 0 */
+ clrbits_le32(DDRC_PWRCTL(0), (0x1 << 5));
+
+ /* Step24: Set SWCTL.sw_done to 1; need polling SWSTAT.sw_done_ack */
+ reg32_write(DDRC_SWCTL(0), 0x00000001);
+ do {
+ tmp = reg32_read(DDRC_SWSTAT(0));
+ } while ((tmp & 0x1) == 0x0);
+
+ /* Step25: Wait for dwc_ddr_umctl2 to move to normal operating mode by monitoring
+ * STAT.operating_mode signal */
+ do {
+ tmp = reg32_read(DDRC_STAT(0));
+ } while ((tmp & 0x3) != 0x1);
+
+ /* Step26: Set back register in Step4 to the original values if desired */
+ reg32_write(DDRC_RFSHCTL3(0), 0x0000000);
+ /* enable selfref_en by default */
+ setbits_le32(DDRC_PWRCTL(0), 0x1 << 3);
+
+ /* enable port 0 */
+ reg32_write(DDRC_PCTRL_0(0), 0x00000001);
+ printf("DDRINFO: ddrmix config done\n");
+
+ /* save the dram timing config into memory */
+ dram_config_save(dram_timing, CONFIG_SAVED_DRAM_TIMING_BASE);
+}
diff --git a/drivers/ddr/imx/imx8m/ddrphy_utils.c b/drivers/ddr/imx/imx8m/ddrphy_utils.c
index 4732539764..e60503309e 100644
--- a/drivers/ddr/imx/imx8m/ddrphy_utils.c
+++ b/drivers/ddr/imx/imx8m/ddrphy_utils.c
@@ -122,6 +122,10 @@ void ddrphy_init_set_dfi_clk(unsigned int drate)
dram_pll_init(MHZ(400));
dram_disable_bypass();
break;
+ case 1066:
+ dram_pll_init(MHZ(266));
+ dram_disable_bypass();
+ break;
case 667:
dram_pll_init(MHZ(167));
dram_disable_bypass();
diff --git a/drivers/ddr/imx/imx8m/helper.c b/drivers/ddr/imx/imx8m/helper.c
index 3e605353ea..b3e63834ca 100644
--- a/drivers/ddr/imx/imx8m/helper.c
+++ b/drivers/ddr/imx/imx8m/helper.c
@@ -67,7 +67,7 @@ void ddr_load_train_firmware(enum fw_type type)
i += 4;
}
- debug("check ddr4_pmu_train_imem code\n");
+ debug("check ddr_pmu_train_imem code\n");
pr_from32 = imem_start;
pr_to32 = DDR_TRAIN_CODE_BASE_ADDR + 4 * IMEM_OFFSET_ADDR;
for (i = 0x0; i < IMEM_LEN; ) {
@@ -84,9 +84,9 @@ void ddr_load_train_firmware(enum fw_type type)
i += 4;
}
if (error)
- printf("check ddr4_pmu_train_imem code fail=%d\n", error);
+ printf("check ddr_pmu_train_imem code fail=%d\n", error);
else
- debug("check ddr4_pmu_train_imem code pass\n");
+ debug("check ddr_pmu_train_imem code pass\n");
debug("check ddr4_pmu_train_dmem code\n");
pr_from32 = dmem_start;
@@ -105,9 +105,9 @@ void ddr_load_train_firmware(enum fw_type type)
}
if (error)
- printf("check ddr4_pmu_train_dmem code fail=%d", error);
+ printf("check ddr_pmu_train_dmem code fail=%d", error);
else
- debug("check ddr4_pmu_train_dmem code pass\n");
+ debug("check ddr_pmu_train_dmem code pass\n");
}
void ddrphy_trained_csr_save(struct dram_cfg_param *ddrphy_csr,
diff --git a/drivers/ddr/imx/imx8m/lpddr4_init.c b/drivers/ddr/imx/imx8m/lpddr4_init.c
deleted file mode 100644
index 0f46ca02b6..0000000000
--- a/drivers/ddr/imx/imx8m/lpddr4_init.c
+++ /dev/null
@@ -1,191 +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/ddr.h>
-#include <asm/arch/lpddr4_define.h>
-#include <asm/arch/sys_proto.h>
-
-void lpddr4_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)
-{
- unsigned int tmp;
-
- debug("DDRINFO: start lpddr4 ddr init\n");
- /* step 1: reset */
- if (is_imx8mq()) {
- reg32_write(SRC_DDRC_RCR_ADDR + 0x04, 0x8F00000F);
- reg32_write(SRC_DDRC_RCR_ADDR, 0x8F00000F);
- reg32_write(SRC_DDRC_RCR_ADDR + 0x04, 0x8F000000);
- } else {
- reg32_write(SRC_DDRC_RCR_ADDR, 0x8F00001F);
- reg32_write(SRC_DDRC_RCR_ADDR, 0x8F00000F);
- }
-
- mdelay(100);
-
- debug("DDRINFO: reset done\n");
- /*
- * change the clock source of dram_apb_clk_root:
- * source 4 800MHz /4 = 200MHz
- */
- clock_set_target_val(DRAM_APB_CLK_ROOT, CLK_ROOT_ON |
- CLK_ROOT_SOURCE_SEL(4) |
- CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV4));
-
- /* disable iso */
- reg32_write(0x303A00EC, 0x0000ffff); /* PGC_CPU_MAPPING */
- reg32setbit(0x303A00F8, 5); /* PU_PGC_SW_PUP_REQ */
-
- debug("DDRINFO: cfg clk\n");
- if (is_imx8mq())
- dram_pll_init(MHZ(800));
- else
- dram_pll_init(MHZ(750));
-
- /*
- * release [0]ddr1_preset_n, [1]ddr1_core_reset_n,
- * [2]ddr1_phy_reset, [3]ddr1_phy_pwrokin_n
- */
- reg32_write(SRC_DDRC_RCR_ADDR, 0x8F000006);
-
- /*step2 Configure uMCTL2's registers */
- debug("DDRINFO: ddrc config start\n");
- lpddr4_cfg_umctl2(dram_timing->ddrc_cfg, dram_timing->ddrc_cfg_num);
- debug("DDRINFO: ddrc config done\n");
-
- /*
- * step3 de-assert all reset
- * RESET: <core_ddrc_rstn> DEASSERTED
- * RESET: <aresetn> for Port 0 DEASSERT(0)ED
- */
- reg32_write(SRC_DDRC_RCR_ADDR, 0x8F000004);
- reg32_write(SRC_DDRC_RCR_ADDR, 0x8F000000);
-
- reg32_write(DDRC_DBG1(0), 0x00000000);
- /* step4 */
- /* [0]dis_auto_refresh=1 */
- reg32_write(DDRC_RFSHCTL3(0), 0x00000011);
-
- /* [8]--1: lpddr4_sr allowed; [5]--1: software entry to SR */
- reg32_write(DDRC_PWRCTL(0), 0x000000a8);
-
- do {
- tmp = reg32_read(DDRC_STAT(0));
- } while ((tmp & 0x33f) != 0x223);
-
- reg32_write(DDRC_DDR_SS_GPR0, 0x01); /* LPDDR4 mode */
-
- /* step5 */
- reg32_write(DDRC_SWCTL(0), 0x00000000);
-
- /* step6 */
- tmp = reg32_read(DDRC_MSTR2(0));
- if (tmp == 0x2)
- reg32_write(DDRC_DFIMISC(0), 0x00000210);
- else if (tmp == 0x1)
- reg32_write(DDRC_DFIMISC(0), 0x00000110);
- else
- reg32_write(DDRC_DFIMISC(0), 0x00000010);
-
- /* step7 [0]--1: disable quasi-dynamic programming */
- reg32_write(DDRC_SWCTL(0), 0x00000001);
-
- /* step8 Configure LPDDR4 PHY's registers */
- debug("DDRINFO:ddrphy config start\n");
- ddr_cfg_phy(dram_timing);
- debug("DDRINFO: ddrphy config done\n");
-
- /*
- * step14 CalBusy.0 =1, indicates the calibrator is actively
- * calibrating. Wait Calibrating done.
- */
- do {
- tmp = reg32_read(DDRPHY_CalBusy(0));
- } while ((tmp & 0x1));
-
- debug("DDRINFO:ddrphy calibration done\n");
-
- /* step15 [0]--0: to enable quasi-dynamic programming */
- reg32_write(DDRC_SWCTL(0), 0x00000000);
-
- /* step16 */
- tmp = reg32_read(DDRC_MSTR2(0));
- if (tmp == 0x2)
- reg32_write(DDRC_DFIMISC(0), 0x00000230);
- else if (tmp == 0x1)
- reg32_write(DDRC_DFIMISC(0), 0x00000130);
- else
- reg32_write(DDRC_DFIMISC(0), 0x00000030);
-
- /* step17 [0]--1: disable quasi-dynamic programming */
- reg32_write(DDRC_SWCTL(0), 0x00000001);
- /* step18 wait DFISTAT.dfi_init_complete to 1 */
- do {
- tmp = reg32_read(DDRC_DFISTAT(0));
- } while ((tmp & 0x1) == 0x0);
-
- /* step19 */
- reg32_write(DDRC_SWCTL(0), 0x00000000);
-
- /* step20~22 */
- tmp = reg32_read(DDRC_MSTR2(0));
- if (tmp == 0x2) {
- reg32_write(DDRC_DFIMISC(0), 0x00000210);
- /* set DFIMISC.dfi_init_complete_en again */
- reg32_write(DDRC_DFIMISC(0), 0x00000211);
- } else if (tmp == 0x1) {
- reg32_write(DDRC_DFIMISC(0), 0x00000110);
- /* set DFIMISC.dfi_init_complete_en again */
- reg32_write(DDRC_DFIMISC(0), 0x00000111);
- } else {
- /* clear DFIMISC.dfi_init_complete_en */
- reg32_write(DDRC_DFIMISC(0), 0x00000010);
- /* set DFIMISC.dfi_init_complete_en again */
- reg32_write(DDRC_DFIMISC(0), 0x00000011);
- }
-
- /* step23 [5]selfref_sw=0; */
- reg32_write(DDRC_PWRCTL(0), 0x00000008);
- /* step24 sw_done=1 */
- reg32_write(DDRC_SWCTL(0), 0x00000001);
-
- /* step25 wait SWSTAT.sw_done_ack to 1 */
- do {
- tmp = reg32_read(DDRC_SWSTAT(0));
- } while ((tmp & 0x1) == 0x0);
-
-#ifdef DFI_BUG_WR
- reg32_write(DDRC_DFIPHYMSTR(0), 0x00000001);
-#endif
- /* wait STAT.operating_mode([1:0] for ddr3) to normal state */
- do {
- tmp = reg32_read(DDRC_STAT(0));
- } while ((tmp & 0x3) != 0x1);
-
- /* step26 */
- reg32_write(DDRC_RFSHCTL3(0), 0x00000010);
-
- /* enable port 0 */
- reg32_write(DDRC_PCTRL_0(0), 0x00000001);
- debug("DDRINFO: ddrmix config done\n");
-
- /* save the dram timing config into memory */
- dram_config_save(dram_timing, CONFIG_SAVED_DRAM_TIMING_BASE);
-}
--
2.16.4
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