[U-Boot] [PATCH 04/12 V3] Exynos5420: Add DDR3 initialization for 5420
Simon Glass
sjg at chromium.org
Thu Sep 19 07:56:11 CEST 2013
On Wed, Sep 11, 2013 at 4:01 AM, Rajeshwari S Shinde <
rajeshwari.s at samsung.com> wrote:
> This patch intends to add DDR3 initialization code for Exynos5420.
>
> Signed-off-by: Rajeshwari S Shinde <rajeshwari.s at samsung.com>
> Signed-off-by: Akshay Saraswat <akshay.s at samsung.com>
>
A few nits in comments, but it looks reasonable.
Acked-by: Simon Glass <sjg at chromium.org>
> ---
> Changes in V2:
> - Corrected a compilation issue for SMDK5250.
> Changes in V3:
> - None
> arch/arm/cpu/armv7/exynos/dmc_common.c | 8 -
> arch/arm/cpu/armv7/exynos/dmc_init_ddr3.c | 413
> +++++++++++++++++++++++++++++-
> arch/arm/include/asm/arch-exynos/cpu.h | 4 +
> arch/arm/include/asm/arch-exynos/dmc.h | 121 ++++++---
> 4 files changed, 503 insertions(+), 43 deletions(-)
>
> diff --git a/arch/arm/cpu/armv7/exynos/dmc_common.c
> b/arch/arm/cpu/armv7/exynos/dmc_common.c
> index 53cfe6e..882cd1e 100644
> --- a/arch/arm/cpu/armv7/exynos/dmc_common.c
> +++ b/arch/arm/cpu/armv7/exynos/dmc_common.c
> @@ -152,14 +152,6 @@ void dmc_config_prech(struct mem_timings *mem, struct
> exynos5_dmc *dmc)
> }
> }
>
> -void dmc_config_memory(struct mem_timings *mem, struct exynos5_dmc *dmc)
> -{
> - writel(mem->memconfig, &dmc->memconfig0);
> - writel(mem->memconfig, &dmc->memconfig1);
> - writel(DMC_MEMBASECONFIG0_VAL, &dmc->membaseconfig0);
> - writel(DMC_MEMBASECONFIG1_VAL, &dmc->membaseconfig1);
> -}
> -
> void mem_ctrl_init(int reset)
> {
> struct spl_machine_param *param = spl_get_machine_params();
> diff --git a/arch/arm/cpu/armv7/exynos/dmc_init_ddr3.c
> b/arch/arm/cpu/armv7/exynos/dmc_init_ddr3.c
> index 5f5914e..0ca5350 100644
> --- a/arch/arm/cpu/armv7/exynos/dmc_init_ddr3.c
> +++ b/arch/arm/cpu/armv7/exynos/dmc_init_ddr3.c
> @@ -15,8 +15,9 @@
> #include "exynos5_setup.h"
> #include "clock_init.h"
>
> -#define RDLVL_COMPLETE_TIMEOUT 10000
> +#define TIMEOUT 10000
>
> +#ifdef CONFIG_EXYNOS5250
> static void reset_phy_ctrl(void)
> {
> struct exynos5_clock *clk =
> @@ -108,7 +109,7 @@ int ddr3_mem_ctrl_init(struct mem_timings *mem,
> unsigned long mem_iv_size,
>
> /* Precharge Configuration */
> writel(mem->prechconfig_tp_cnt << PRECHCONFIG_TP_CNT_SHIFT,
> - &dmc->prechconfig);
> + &dmc->prechconfig0);
>
> /* Power Down mode Configuration */
> writel(mem->dpwrdn_cyc << PWRDNCONFIG_DPWRDN_CYC_SHIFT |
> @@ -174,7 +175,7 @@ int ddr3_mem_ctrl_init(struct mem_timings *mem,
> unsigned long mem_iv_size,
> writel(val, &phy1_ctrl->phy_con1);
>
> writel(CTRL_RDLVL_GATE_ENABLE, &dmc->rdlvl_config);
> - i = RDLVL_COMPLETE_TIMEOUT;
> + i = TIMEOUT;
> while ((readl(&dmc->phystatus) &
> (RDLVL_COMPLETE_CHO | RDLVL_COMPLETE_CH1)) !=
> (RDLVL_COMPLETE_CHO | RDLVL_COMPLETE_CH1) && i >
> 0) {
> @@ -215,3 +216,409 @@ int ddr3_mem_ctrl_init(struct mem_timings *mem,
> unsigned long mem_iv_size,
> | (mem->aref_en << CONCONTROL_AREF_EN_SHIFT),
> &dmc->concontrol);
> return 0;
> }
> +#endif
> +
> +#ifdef CONFIG_EXYNOS5420
> +int ddr3_mem_ctrl_init(struct mem_timings *mem, unsigned long mem_iv_size,
> + int reset)
> +{
> + struct exynos5420_clock *clk =
> + (struct exynos5420_clock *)EXYNOS5_CLOCK_BASE;
> + struct exynos5_phy_control *phy0_ctrl, *phy1_ctrl;
> + struct exynos5_dmc *drex0, *drex1;
> + struct exynos5_tzasc *tzasc0, *tzasc1;
> + uint32_t val, n_lock_r, n_lock_w_phy0, n_lock_w_phy1;
> + int chip;
> + int i;
> +
> + phy0_ctrl = (struct exynos5_phy_control
> *)samsung_get_base_dmc_phy();
> + phy1_ctrl = (struct exynos5_phy_control
> *)(samsung_get_base_dmc_phy()
> + + DMC_OFFSET);
> + drex0 = (struct exynos5_dmc *)samsung_get_base_dmc_ctrl();
> + drex1 = (struct exynos5_dmc *)(samsung_get_base_dmc_ctrl()
> + + DMC_OFFSET);
> + tzasc0 = (struct exynos5_tzasc *)EXYNOS5420_DMC_TZASC0_BASE;
> + tzasc1 = (struct exynos5_tzasc *)EXYNOS5420_DMC_TZASC1_BASE;
> +
> + /* Enable PAUSE for DREX */
> + setbits_le32(&clk->pause, ENABLE_BIT);
> +
> + /* Enable BYPASS mode */
> + setbits_le32(&clk->bpll_con1, BYPASS_EN);
> +
> + writel(MUX_BPLL_SEL_FOUTBPLL, &clk->src_cdrex);
> + do {
> + val = readl(&clk->mux_stat_cdrex);
> + val &= BPLL_SEL_MASK;
> + } while (val != FOUTBPLL);
> +
> + clrbits_le32(&clk->bpll_con1, BYPASS_EN);
> +
> + /* Specify the DDR memory type as DDR3 */
> + val = readl(&phy0_ctrl->phy_con0);
> + val &= ~(PHY_CON0_CTRL_DDR_MODE_MASK <<
> PHY_CON0_CTRL_DDR_MODE_SHIFT);
> + val |= (DDR_MODE_DDR3 << PHY_CON0_CTRL_DDR_MODE_SHIFT);
> + writel(val, &phy0_ctrl->phy_con0);
> +
> + val = readl(&phy1_ctrl->phy_con0);
> + val &= ~(PHY_CON0_CTRL_DDR_MODE_MASK <<
> PHY_CON0_CTRL_DDR_MODE_SHIFT);
> + val |= (DDR_MODE_DDR3 << PHY_CON0_CTRL_DDR_MODE_SHIFT);
> + writel(val, &phy1_ctrl->phy_con0);
> +
> + /* Set Read Latency and Burst Length for PHY0 and PHY1 */
> + val = (mem->ctrl_bstlen << PHY_CON42_CTRL_BSTLEN_SHIFT) |
> + (mem->ctrl_rdlat << PHY_CON42_CTRL_RDLAT_SHIFT);
> + writel(val, &phy0_ctrl->phy_con42);
> + writel(val, &phy1_ctrl->phy_con42);
> +
> + val = readl(&phy0_ctrl->phy_con26);
> + val &= ~(T_WRDATA_EN_MASK << T_WRDATA_EN_OFFSET);
> + val |= (T_WRDATA_EN_DDR3 << T_WRDATA_EN_OFFSET);
> + writel(val, &phy0_ctrl->phy_con26);
> +
> + val = readl(&phy1_ctrl->phy_con26);
> + val &= ~(T_WRDATA_EN_MASK << T_WRDATA_EN_OFFSET);
> + val |= (T_WRDATA_EN_DDR3 << T_WRDATA_EN_OFFSET);
> + writel(val, &phy1_ctrl->phy_con26);
> +
> + /* Set Driver strength for CK, CKE, CS & CA to 0x7
>
Comment style
/*
* Set Driver ...
* ...
*/
Please fix globally.
> + * Set Driver strength for Data Slice 0~3 to 0x7
> + */
> + val = (0x7 << CA_CK_DRVR_DS_OFFSET) | (0x7 <<
> CA_CKE_DRVR_DS_OFFSET) |
> + (0x7 << CA_CS_DRVR_DS_OFFSET) | (0x7 <<
> CA_ADR_DRVR_DS_OFFSET);
> + val |= (0x7 << DA_3_DS_OFFSET) | (0x7 << DA_2_DS_OFFSET) |
> + (0x7 << DA_1_DS_OFFSET) | (0x7 << DA_0_DS_OFFSET);
> + writel(val, &phy0_ctrl->phy_con39);
> + writel(val, &phy1_ctrl->phy_con39);
> +
> + /* ZQ Calibration */
> + if (dmc_config_zq(mem, phy0_ctrl, phy1_ctrl))
> + return SETUP_ERR_ZQ_CALIBRATION_FAILURE;
> +
> + clrbits_le32(&phy0_ctrl->phy_con16, ZQ_CLK_DIV_EN);
> + clrbits_le32(&phy1_ctrl->phy_con16, ZQ_CLK_DIV_EN);
> +
> + /* DQ Signal */
> + val = readl(&phy0_ctrl->phy_con14);
> + val |= mem->phy0_pulld_dqs;
> + writel(val, &phy0_ctrl->phy_con14);
> + val = readl(&phy1_ctrl->phy_con14);
> + val |= mem->phy1_pulld_dqs;
> + writel(val, &phy1_ctrl->phy_con14);
> +
> + val = MEM_TERM_EN | PHY_TERM_EN;
> + writel(val, &drex0->phycontrol0);
> + writel(val, &drex1->phycontrol0);
> +
> + writel(mem->concontrol |
> + (mem->dfi_init_start << CONCONTROL_DFI_INIT_START_SHIFT) |
> + (mem->rd_fetch << CONCONTROL_RD_FETCH_SHIFT),
> + &drex0->concontrol);
> + writel(mem->concontrol |
> + (mem->dfi_init_start << CONCONTROL_DFI_INIT_START_SHIFT) |
> + (mem->rd_fetch << CONCONTROL_RD_FETCH_SHIFT),
> + &drex1->concontrol);
> +
> + do {
> + val = readl(&drex0->phystatus);
> + } while ((val & DFI_INIT_COMPLETE) != DFI_INIT_COMPLETE);
> + do {
> + val = readl(&drex1->phystatus);
> + } while ((val & DFI_INIT_COMPLETE) != DFI_INIT_COMPLETE);
> +
> + clrbits_le32(&drex0->concontrol, DFI_INIT_START);
> + clrbits_le32(&drex1->concontrol, DFI_INIT_START);
> +
> + update_reset_dll(drex0, DDR_MODE_DDR3);
> + update_reset_dll(drex1, DDR_MODE_DDR3);
> +
> + /* Set Base Address:
> + * 0x2000_0000 ~ 0x5FFF_FFFF
> + * 0x6000_0000 ~ 0x9FFF_FFFF
> + */
> + /* MEMBASECONFIG0 */
> + val = DMC_MEMBASECONFIGX_CHIP_BASE(DMC_CHIP_BASE_0) |
> + DMC_MEMBASECONFIGX_CHIP_MASK(DMC_CHIP_MASK);
> + writel(val, &tzasc0->membaseconfig0);
> + writel(val, &tzasc1->membaseconfig0);
> +
> + /* MEMBASECONFIG1 */
> + val = DMC_MEMBASECONFIGX_CHIP_BASE(DMC_CHIP_BASE_1) |
> + DMC_MEMBASECONFIGX_CHIP_MASK(DMC_CHIP_MASK);
> + writel(val, &tzasc0->membaseconfig1);
> + writel(val, &tzasc1->membaseconfig1);
> +
> + /* Memory Channel Inteleaving Size
> + * Ares Channel interleaving = 128 bytes
> + */
> + /* MEMCONFIG0/1 */
> + writel(mem->memconfig, &tzasc0->memconfig0);
> + writel(mem->memconfig, &tzasc1->memconfig0);
> + writel(mem->memconfig, &tzasc0->memconfig1);
> + writel(mem->memconfig, &tzasc1->memconfig1);
> +
> + /* Precharge Configuration */
> + writel(mem->prechconfig_tp_cnt << PRECHCONFIG_TP_CNT_SHIFT,
> + &drex0->prechconfig0);
> + writel(mem->prechconfig_tp_cnt << PRECHCONFIG_TP_CNT_SHIFT,
> + &drex1->prechconfig0);
> +
> + /* TimingRow, TimingData, TimingPower and Timingaref
> + * values as per Memory AC parameters
> + */
> + writel(mem->timing_ref, &drex0->timingref);
> + writel(mem->timing_ref, &drex1->timingref);
> + writel(mem->timing_row, &drex0->timingrow);
> + writel(mem->timing_row, &drex1->timingrow);
> + writel(mem->timing_data, &drex0->timingdata);
> + writel(mem->timing_data, &drex1->timingdata);
> + writel(mem->timing_power, &drex0->timingpower);
> + writel(mem->timing_power, &drex1->timingpower);
> +
> + if (reset) {
> + /* Send NOP, MRS and ZQINIT commands
> + * Sending MRS command will reset the DRAM. We should not
> be
> + * reseting the DRAM after resume, this will lead to memory
> + * corruption as DRAM content is lost after DRAM reset
> + */
> + dmc_config_mrs(mem, drex0);
> + dmc_config_mrs(mem, drex1);
> + } else {
> + /*
> + * During Suspend-Resume & S/W-Reset, as soon as PMU
> releases
> + * pad retention, CKE goes high. This causes memory
> contents
> + * not to be retained during DRAM initialization. Therfore,
> + * there is a new control register(0x100431e8[28]) which
> lets us
> + * release pad retention and retain the memory content
> until the
> + * initialization is complete.
> + */
> + writel(PAD_RETENTION_DRAM_COREBLK_VAL,
> + PAD_RETENTION_DRAM_COREBLK_OPTION);
> + do {
> + val = readl(PAD_RETENTION_DRAM_STATUS);
> + } while (val != 0x1);
> +
> + /*
> + * CKE PAD retention disables DRAM self-refresh mode.
> + * Send auto refresh command for DRAM refresh.
> + */
> + for (i = 0; i < 128; i++) {
> + for (chip = 0; chip < mem->chips_to_configure;
> chip++) {
> + writel(DIRECT_CMD_REFA |
> + (chip << DIRECT_CMD_CHIP_SHIFT),
> + &drex0->directcmd);
> + writel(DIRECT_CMD_REFA |
> + (chip << DIRECT_CMD_CHIP_SHIFT),
> + &drex1->directcmd);
> + }
> + }
> + }
> +
> + if (mem->gate_leveling_enable) {
> + writel(PHY_CON0_RESET_VAL, &phy0_ctrl->phy_con0);
> + writel(PHY_CON0_RESET_VAL, &phy1_ctrl->phy_con0);
> +
> + setbits_le32(&phy0_ctrl->phy_con0, P0_CMD_EN);
> + setbits_le32(&phy1_ctrl->phy_con0, P0_CMD_EN);
> +
> + val = PHY_CON2_RESET_VAL;
> + val |= INIT_DESKEW_EN;
> + writel(val, &phy0_ctrl->phy_con2);
> + writel(val, &phy1_ctrl->phy_con2);
> +
> + val = readl(&phy0_ctrl->phy_con1);
> + val |= (RDLVL_PASS_ADJ_VAL << RDLVL_PASS_ADJ_OFFSET);
> + writel(val, &phy0_ctrl->phy_con1);
> +
> + val = readl(&phy1_ctrl->phy_con1);
> + val |= (RDLVL_PASS_ADJ_VAL << RDLVL_PASS_ADJ_OFFSET);
> + writel(val, &phy1_ctrl->phy_con1);
> +
> + n_lock_r = readl(&phy0_ctrl->phy_con13);
> + n_lock_w_phy0 = (n_lock_r & CTRL_LOCK_COARSE_MASK) >> 2;
> + n_lock_r = readl(&phy0_ctrl->phy_con12);
> + n_lock_r &= ~CTRL_DLL_ON;
> + n_lock_r |= n_lock_w_phy0;
> + writel(n_lock_r, &phy0_ctrl->phy_con12);
> +
> + n_lock_r = readl(&phy1_ctrl->phy_con13);
> + n_lock_w_phy1 = (n_lock_r & CTRL_LOCK_COARSE_MASK) >> 2;
> + n_lock_r = readl(&phy1_ctrl->phy_con12);
> + n_lock_r &= ~CTRL_DLL_ON;
> + n_lock_r |= n_lock_w_phy1;
> + writel(n_lock_r, &phy1_ctrl->phy_con12);
> +
> + val = (0x3 << DIRECT_CMD_BANK_SHIFT) | 0x4;
> + for (chip = 0; chip < mem->chips_to_configure; chip++) {
> + writel(val | (chip << DIRECT_CMD_CHIP_SHIFT),
> + &drex0->directcmd);
> + writel(val | (chip << DIRECT_CMD_CHIP_SHIFT),
> + &drex1->directcmd);
> + }
> +
> + setbits_le32(&phy0_ctrl->phy_con2, RDLVL_GATE_EN);
> + setbits_le32(&phy1_ctrl->phy_con2, RDLVL_GATE_EN);
> +
> + setbits_le32(&phy0_ctrl->phy_con0, CTRL_SHGATE);
> + setbits_le32(&phy1_ctrl->phy_con0, CTRL_SHGATE);
> +
> + val = readl(&phy0_ctrl->phy_con1);
> + val &= ~(CTRL_GATEDURADJ_MASK);
> + writel(val, &phy0_ctrl->phy_con1);
> +
> + val = readl(&phy1_ctrl->phy_con1);
> + val &= ~(CTRL_GATEDURADJ_MASK);
> + writel(val, &phy1_ctrl->phy_con1);
> +
> + writel(CTRL_RDLVL_GATE_ENABLE, &drex0->rdlvl_config);
> + i = TIMEOUT;
> + while (((readl(&drex0->phystatus) & RDLVL_COMPLETE_CHO) !=
> + RDLVL_COMPLETE_CHO) && (i > 0)) {
> + /*
> + * TODO(waihong): Comment on how long this take to
> + * timeout
> + */
> + sdelay(100);
> + i--;
> + }
> + if (!i)
> + return SETUP_ERR_RDLV_COMPLETE_TIMEOUT;
> + writel(CTRL_RDLVL_GATE_DISABLE, &drex0->rdlvl_config);
> +
> + writel(CTRL_RDLVL_GATE_ENABLE, &drex1->rdlvl_config);
> + i = TIMEOUT;
> + while (((readl(&drex1->phystatus) & RDLVL_COMPLETE_CHO) !=
> + RDLVL_COMPLETE_CHO) && (i > 0)) {
> + /*
> + * TODO(waihong): Comment on how long this take to
> + * timeout
> + */
> + sdelay(100);
> + i--;
> + }
> + if (!i)
> + return SETUP_ERR_RDLV_COMPLETE_TIMEOUT;
> + writel(CTRL_RDLVL_GATE_DISABLE, &drex1->rdlvl_config);
> +
> + writel(0, &phy0_ctrl->phy_con14);
> + writel(0, &phy1_ctrl->phy_con14);
> +
> + val = (0x3 << DIRECT_CMD_BANK_SHIFT);
> + for (chip = 0; chip < mem->chips_to_configure; chip++) {
> + writel(val | (chip << DIRECT_CMD_CHIP_SHIFT),
> + &drex0->directcmd);
> + writel(val | (chip << DIRECT_CMD_CHIP_SHIFT),
> + &drex1->directcmd);
> + }
> +
> + if (mem->read_leveling_enable) {
> + /* Set Read DQ Calibration */
> + val = (0x3 << DIRECT_CMD_BANK_SHIFT) | 0x4;
> + for (chip = 0; chip < mem->chips_to_configure;
> chip++) {
> + writel(val | (chip <<
> DIRECT_CMD_CHIP_SHIFT),
> + &drex0->directcmd);
> + writel(val | (chip <<
> DIRECT_CMD_CHIP_SHIFT),
> + &drex1->directcmd);
> + }
> +
> + val = readl(&phy0_ctrl->phy_con1);
> + val |= READ_LEVELLING_DDR3;
> + writel(val, &phy0_ctrl->phy_con1);
> + val = readl(&phy1_ctrl->phy_con1);
> + val |= READ_LEVELLING_DDR3;
> + writel(val, &phy1_ctrl->phy_con1);
> +
> + val = readl(&phy0_ctrl->phy_con2);
> + val |= (RDLVL_EN | RDLVL_INCR_ADJ);
> + writel(val, &phy0_ctrl->phy_con2);
> + val = readl(&phy1_ctrl->phy_con2);
> + val |= (RDLVL_EN | RDLVL_INCR_ADJ);
> + writel(val, &phy1_ctrl->phy_con2);
> +
> + setbits_le32(&drex0->rdlvl_config,
> + CTRL_RDLVL_DATA_ENABLE);
> + i = TIMEOUT;
> + while (((readl(&drex0->phystatus) &
> RDLVL_COMPLETE_CHO)
> + != RDLVL_COMPLETE_CHO) && (i > 0)) {
> + /*
> + * TODO(waihong): Comment on how long this
> take
> + * to timeout
> + */
> + sdelay(100);
> + i--;
> + }
> + if (!i)
> + return SETUP_ERR_RDLV_COMPLETE_TIMEOUT;
> +
> + clrbits_le32(&drex0->rdlvl_config,
> + CTRL_RDLVL_DATA_ENABLE);
> + setbits_le32(&drex1->rdlvl_config,
> + CTRL_RDLVL_DATA_ENABLE);
> + i = TIMEOUT;
> + while (((readl(&drex1->phystatus) &
> RDLVL_COMPLETE_CHO)
> + != RDLVL_COMPLETE_CHO) && (i > 0)) {
> + /*
> + * TODO(waihong): Comment on how long this
> take
> + * to timeout
> + */
> + sdelay(100);
> + i--;
> + }
> + if (!i)
> + return SETUP_ERR_RDLV_COMPLETE_TIMEOUT;
> +
> + clrbits_le32(&drex1->rdlvl_config,
> + CTRL_RDLVL_DATA_ENABLE);
> +
> + val = (0x3 << DIRECT_CMD_BANK_SHIFT);
> + for (chip = 0; chip < mem->chips_to_configure;
> chip++) {
> + writel(val | (chip <<
> DIRECT_CMD_CHIP_SHIFT),
> + &drex0->directcmd);
> + writel(val | (chip <<
> DIRECT_CMD_CHIP_SHIFT),
> + &drex1->directcmd);
> + }
> +
> + update_reset_dll(drex0, DDR_MODE_DDR3);
> + update_reset_dll(drex1, DDR_MODE_DDR3);
> + }
> +
> + /* Common Settings for Leveling */
> + val = PHY_CON12_RESET_VAL;
> + writel((val + n_lock_w_phy0), &phy0_ctrl->phy_con12);
> + writel((val + n_lock_w_phy1), &phy1_ctrl->phy_con12);
> +
> + setbits_le32(&phy0_ctrl->phy_con2, DLL_DESKEW_EN);
> + setbits_le32(&phy1_ctrl->phy_con2, DLL_DESKEW_EN);
> + }
> +
> + /* Send PALL command */
> + dmc_config_prech(mem, drex0);
> + dmc_config_prech(mem, drex1);
> +
> + writel(mem->memcontrol, &drex0->memcontrol);
> + writel(mem->memcontrol, &drex1->memcontrol);
> +
> + /*
> + * Set DMC Concontrol: Enable auto-refresh counter, provide
> + * read data fetch cycles and enable DREX auto set powerdown
> + * for input buffer of I/O in none read memory state.
> + */
> + writel(mem->concontrol | (mem->aref_en <<
> CONCONTROL_AREF_EN_SHIFT) |
> + (mem->rd_fetch << CONCONTROL_RD_FETCH_SHIFT)|
> + DMC_CONCONTROL_IO_PD_CON(0x2),
> + &drex0->concontrol);
> + writel(mem->concontrol | (mem->aref_en <<
> CONCONTROL_AREF_EN_SHIFT) |
> + (mem->rd_fetch << CONCONTROL_RD_FETCH_SHIFT)|
> + DMC_CONCONTROL_IO_PD_CON(0x2),
> + &drex1->concontrol);
> +
> + /* Enable Clock Gating Control for DMC
> + * this saves around 25 mw dmc power as compared to the power
> + * consumption without these bits enabled
> + */
> + setbits_le32(&drex0->cgcontrol, DMC_INTERNAL_CG);
> + setbits_le32(&drex1->cgcontrol, DMC_INTERNAL_CG);
> +
> + return 0;
> +}
> +#endif
> diff --git a/arch/arm/include/asm/arch-exynos/cpu.h
> b/arch/arm/include/asm/arch-exynos/cpu.h
> index e988251..a110240 100644
> --- a/arch/arm/include/asm/arch-exynos/cpu.h
> +++ b/arch/arm/include/asm/arch-exynos/cpu.h
> @@ -160,6 +160,10 @@
> #define EXYNOS5420_MODEM_BASE DEVICE_NOT_AVAILABLE
> #define EXYNOS5420_TZPC_BASE DEVICE_NOT_AVAILABLE
>
> +#define PAD_RETENTION_DRAM_STATUS (EXYNOS5420_POWER_BASE + 0x3004)
> +#define PAD_RETENTION_DRAM_COREBLK_OPTION (EXYNOS5420_POWER_BASE +
> 0x31E8)
> +#define PAD_RETENTION_DRAM_COREBLK_VAL 0x10000000
> +
> #ifndef __ASSEMBLY__
> #include <asm/io.h>
> /* CPU detection macros */
> diff --git a/arch/arm/include/asm/arch-exynos/dmc.h
> b/arch/arm/include/asm/arch-exynos/dmc.h
> index f65c676..b947de1 100644
> --- a/arch/arm/include/asm/arch-exynos/dmc.h
> +++ b/arch/arm/include/asm/arch-exynos/dmc.h
> @@ -114,13 +114,22 @@ struct exynos4_dmc {
> struct exynos5_dmc {
> unsigned int concontrol;
> unsigned int memcontrol;
> +
> +/* Between 5250 and 5420, the DMC Register differs only at 0x8 offset.
> + * So to use the same structure and simplify the code put a define to
> + * distinguish between memconfig0 and cgcontrol register */
> +#ifdef CONFIG_EXYNOS5250
> unsigned int memconfig0;
> +#else
> + unsigned int cgcontrol;
> +#endif
>
It would be nice to be able to build an SPL that works on both 5250 and
5420, but that can wait...
> unsigned int memconfig1;
> unsigned int directcmd;
> - unsigned int prechconfig;
> + unsigned int prechconfig0;
> unsigned int phycontrol0;
> - unsigned char res1[0xc];
> - unsigned int pwrdnconfig;
> + unsigned int prechconfig1;
> + unsigned char res1[0x8];
> + unsigned int pwrdnconfig; /* 0x0028*/
> unsigned int timingpzq;
> unsigned int timingref;
> unsigned int timingrow;
> @@ -128,12 +137,12 @@ struct exynos5_dmc {
> unsigned int timingpower;
> unsigned int phystatus;
> unsigned char res2[0x4];
> - unsigned int chipstatus_ch0;
> + unsigned int chipstatus_ch0; /* 0x0048 */
> unsigned int chipstatus_ch1;
> unsigned char res3[0x4];
> unsigned int mrstatus;
> unsigned char res4[0x8];
> - unsigned int qoscontrol0;
> + unsigned int qoscontrol0; /* 0x0060 */
> unsigned char resr5[0x4];
> unsigned int qoscontrol1;
> unsigned char res6[0x4];
> @@ -164,45 +173,83 @@ struct exynos5_dmc {
> unsigned int qoscontrol14;
> unsigned char res19[0x4];
> unsigned int qoscontrol15;
> - unsigned char res20[0x14];
> + unsigned char res20[0x4];
> + unsigned int timing_set_sw; /* 0x00e0 */
> + unsigned int timingrow1;
> + unsigned int timingdata1;
> + unsigned int timingpower1;
> unsigned int ivcontrol;
> unsigned int wrtra_config;
> unsigned int rdlvl_config;
> - unsigned char res21[0x8];
> + unsigned char res21[0x4];
> + unsigned int brbrsvcontrol; /* 0x0100*/
> unsigned int brbrsvconfig;
> unsigned int brbqosconfig;
> unsigned int membaseconfig0;
> - unsigned int membaseconfig1;
> + unsigned int membaseconfig1; /* 0x0110 */
> unsigned char res22[0xc];
> - unsigned int wrlvl_config;
> - unsigned char res23[0xc];
> - unsigned int perevcontrol;
> + unsigned int wrlvl_config0; /* 0x0120 */
> + unsigned int wrlvl_config1;
> + unsigned int wrlvl_status;
> + unsigned char res23[0x4];
> + unsigned int perevcontrol; /* 0x0130 */
> unsigned int perev0config;
> unsigned int perev1config;
> unsigned int perev2config;
> unsigned int perev3config;
> - unsigned char res24[0xdebc];
> - unsigned int pmnc_ppc_a;
> - unsigned char res25[0xc];
> - unsigned int cntens_ppc_a;
> - unsigned char res26[0xc];
> - unsigned int cntenc_ppc_a;
> - unsigned char res27[0xc];
> - unsigned int intens_ppc_a;
> - unsigned char res28[0xc];
> - unsigned int intenc_ppc_a;
> - unsigned char res29[0xc];
> - unsigned int flag_ppc_a;
> - unsigned char res30[0xac];
> - unsigned int ccnt_ppc_a;
> - unsigned char res31[0xc];
> - unsigned int pmcnt0_ppc_a;
> + unsigned char res22a[0xc];
> + unsigned int ctrl_io_rdata_ch0;
> + unsigned int ctrl_io_rdata_ch1;
> + unsigned char res23a[0x8];
> + unsigned int cacal_config0;
> + unsigned int cacal_config1;
> + unsigned int cacal_status;
> + unsigned char res24[0x94];
> + unsigned int emergent_config0; /* 0x0200 */
> + unsigned int emergent_config1;
> + unsigned char res25[0x8];
> + unsigned int bp_control0;
> + unsigned int bp_control0_r;
> + unsigned int bp_control0_w;
> + unsigned char res26[0x4];
> + unsigned int bp_control1;
> + unsigned int bp_control1_r;
> + unsigned int bp_control1_w;
> + unsigned char res27[0x4];
> + unsigned int bp_control2;
> + unsigned int bp_control2_r;
> + unsigned int bp_control2_w;
> + unsigned char res28[0x4];
> + unsigned int bp_control3;
> + unsigned int bp_control3_r;
> + unsigned int bp_control3_w;
> + unsigned char res29[0xb4];
> + unsigned int winconfig_odt_w; /* 0x0300 */
> + unsigned char res30[0x4];
> + unsigned int winconfig_ctrl_read;
> + unsigned int winconfig_ctrl_gate;
> + unsigned char res31[0xdcf0];
> + unsigned int pmnc_ppc;
> unsigned char res32[0xc];
> - unsigned int pmcnt1_ppc_a;
> + unsigned int cntens_ppc;
> unsigned char res33[0xc];
> - unsigned int pmcnt2_ppc_a;
> + unsigned int cntenc_ppc;
> unsigned char res34[0xc];
> - unsigned int pmcnt3_ppc_a;
> + unsigned int intens_ppc;
> + unsigned char res35[0xc];
> + unsigned int intenc_ppc;
> + unsigned char res36[0xc];
> + unsigned int flag_ppc; /* 0xe050 */
> + unsigned char res37[0xac];
> + unsigned int ccnt_ppc;
> + unsigned char res38[0xc];
> + unsigned int pmcnt0_ppc;
> + unsigned char res39[0xc];
> + unsigned int pmcnt1_ppc;
> + unsigned char res40[0xc];
> + unsigned int pmcnt2_ppc;
> + unsigned char res41[0xc];
> + unsigned int pmcnt3_ppc; /* 0xe140 */
> };
>
> struct exynos5_phy_control {
> @@ -211,13 +258,13 @@ struct exynos5_phy_control {
> unsigned int phy_con2;
> unsigned int phy_con3;
> unsigned int phy_con4;
> - unsigned char res1[4];
> + unsigned int phy_con5;
> unsigned int phy_con6;
> unsigned char res2[4];
> unsigned int phy_con8;
> unsigned int phy_con9;
> unsigned int phy_con10;
> - unsigned char res3[4];
> + unsigned int phy_con11;
> unsigned int phy_con12;
> unsigned int phy_con13;
> unsigned int phy_con14;
> @@ -252,6 +299,15 @@ struct exynos5_phy_control {
> unsigned int phy_con42;
> };
>
> +struct exynos5_tzasc {
> + unsigned char res1[0xf00];
> + unsigned int membaseconfig0;
> + unsigned int membaseconfig1;
> + unsigned char res2[0x8];
> + unsigned int memconfig0;
> + unsigned int memconfig1;
> +};
> +
> enum ddr_mode {
> DDR_MODE_DDR2,
> DDR_MODE_DDR3,
> @@ -286,6 +342,7 @@ enum mem_manuf {
> #define PHY_CON0_T_WRRDCMD_SHIFT 17
> #define PHY_CON0_T_WRRDCMD_MASK (0x7 <<
> PHY_CON0_T_WRRDCMD_SHIFT)
> #define PHY_CON0_CTRL_DDR_MODE_SHIFT 11
> +#define PHY_CON0_CTRL_DDR_MODE_MASK 0x3
>
> /* PHY_CON1 register fields */
> #define PHY_CON1_RDLVL_RDDATA_ADJ_SHIFT 0
> --
> 1.7.12.4
>
>
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