diff options
Diffstat (limited to 'arch/arm/cpu/armv7/omap-common')
| -rw-r--r-- | arch/arm/cpu/armv7/omap-common/Makefile | 5 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/omap-common/emif-common.c | 142 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/omap-common/pipe3-phy.c | 231 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/omap-common/pipe3-phy.h | 36 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/omap-common/sata.c | 75 |
5 files changed, 460 insertions, 29 deletions
diff --git a/arch/arm/cpu/armv7/omap-common/Makefile b/arch/arm/cpu/armv7/omap-common/Makefile index 4d3a165f59..59f5352b26 100644 --- a/arch/arm/cpu/armv7/omap-common/Makefile +++ b/arch/arm/cpu/armv7/omap-common/Makefile @@ -17,6 +17,11 @@ obj-y += vc.o obj-y += abb.o endif +ifneq ($(CONFIG_OMAP54XX),) +obj-y += pipe3-phy.o +obj-$(CONFIG_SCSI_AHCI_PLAT) += sata.o +endif + ifeq ($(CONFIG_OMAP34XX),) obj-y += boot-common.o obj-y += lowlevel_init.o diff --git a/arch/arm/cpu/armv7/omap-common/emif-common.c b/arch/arm/cpu/armv7/omap-common/emif-common.c index b0e1caa356..5a3f2858cd 100644 --- a/arch/arm/cpu/armv7/omap-common/emif-common.c +++ b/arch/arm/cpu/armv7/omap-common/emif-common.c @@ -206,7 +206,7 @@ void emif_update_timings(u32 base, const struct emif_regs *regs) } } -static void ddr3_leveling(u32 base, const struct emif_regs *regs) +static void omap5_ddr3_leveling(u32 base, const struct emif_regs *regs) { struct emif_reg_struct *emif = (struct emif_reg_struct *)base; @@ -217,47 +217,86 @@ static void ddr3_leveling(u32 base, const struct emif_regs *regs) /* * Set invert_clkout (if activated)--DDR_PHYCTRL_1 - * Invert clock adds an additional half cycle delay on the command - * interface. The additional half cycle, is usually meant to enable - * leveling in the situation that DQS is later than CK on the board.It - * also helps provide some additional margin for leveling. + * Invert clock adds an additional half cycle delay on the + * command interface. The additional half cycle, is usually + * meant to enable leveling in the situation that DQS is later + * than CK on the board.It also helps provide some additional + * margin for leveling. */ - writel(regs->emif_ddr_phy_ctlr_1, &emif->emif_ddr_phy_ctrl_1); - writel(regs->emif_ddr_phy_ctlr_1, &emif->emif_ddr_phy_ctrl_1_shdw); + writel(regs->emif_ddr_phy_ctlr_1, + &emif->emif_ddr_phy_ctrl_1); + + writel(regs->emif_ddr_phy_ctlr_1, + &emif->emif_ddr_phy_ctrl_1_shdw); __udelay(130); writel(((LP_MODE_DISABLE << EMIF_REG_LP_MODE_SHIFT) - & EMIF_REG_LP_MODE_MASK), &emif->emif_pwr_mgmt_ctrl); + & EMIF_REG_LP_MODE_MASK), &emif->emif_pwr_mgmt_ctrl); /* Launch Full leveling */ writel(DDR3_FULL_LVL, &emif->emif_rd_wr_lvl_ctl); /* Wait till full leveling is complete */ readl(&emif->emif_rd_wr_lvl_ctl); - __udelay(130); + __udelay(130); /* Read data eye leveling no of samples */ config_data_eye_leveling_samples(base); - /* Launch 8 incremental WR_LVL- to compensate for PHY limitation */ - writel(0x2 << EMIF_REG_WRLVLINC_INT_SHIFT, &emif->emif_rd_wr_lvl_ctl); + /* + * Launch 8 incremental WR_LVL- to compensate for + * PHY limitation. + */ + writel(0x2 << EMIF_REG_WRLVLINC_INT_SHIFT, + &emif->emif_rd_wr_lvl_ctl); + __udelay(130); /* Launch Incremental leveling */ writel(DDR3_INC_LVL, &emif->emif_rd_wr_lvl_ctl); - __udelay(130); + __udelay(130); } -static void ddr3_sw_leveling(u32 base, const struct emif_regs *regs) +static void dra7_ddr3_leveling(u32 base, const struct emif_regs *regs) { struct emif_reg_struct *emif = (struct emif_reg_struct *)base; - writel(regs->emif_ddr_phy_ctlr_1, &emif->emif_ddr_phy_ctrl_1); - writel(regs->emif_ddr_phy_ctlr_1, &emif->emif_ddr_phy_ctrl_1_shdw); + u32 fifo_reg; + + fifo_reg = readl(&emif->emif_ddr_fifo_misaligned_clear_1); + writel(fifo_reg | 0x00000100, + &emif->emif_ddr_fifo_misaligned_clear_1); + + fifo_reg = readl(&emif->emif_ddr_fifo_misaligned_clear_2); + writel(fifo_reg | 0x00000100, + &emif->emif_ddr_fifo_misaligned_clear_2); + + /* Launch Full leveling */ + writel(DDR3_FULL_LVL, &emif->emif_rd_wr_lvl_ctl); + + /* Wait till full leveling is complete */ + readl(&emif->emif_rd_wr_lvl_ctl); + __udelay(130); + + /* Read data eye leveling no of samples */ config_data_eye_leveling_samples(base); - writel(regs->emif_rd_wr_lvl_ctl, &emif->emif_rd_wr_lvl_ctl); - writel(regs->sdram_config, &emif->emif_sdram_config); + /* + * Disable leveling. This is because if leveling is kept + * enabled, then PHY triggers a false leveling during + * EMIF-idle scenario which results in wrong delay + * values getting updated. After this the EMIF becomes + * unaccessible. So disable it after the first time + */ + writel(0x0, &emif->emif_rd_wr_lvl_rmp_ctl); +} + +static void ddr3_leveling(u32 base, const struct emif_regs *regs) +{ + if (is_omap54xx()) + omap5_ddr3_leveling(base, regs); + else + dra7_ddr3_leveling(base, regs); } static void ddr3_init(u32 base, const struct emif_regs *regs) @@ -270,9 +309,6 @@ static void ddr3_init(u32 base, const struct emif_regs *regs) * defined, contents of mode Registers must be fully initialized. * H/W takes care of this initialization */ - writel(regs->sdram_config2, &emif->emif_lpddr2_nvm_config); - writel(regs->sdram_config_init, &emif->emif_sdram_config); - writel(regs->emif_ddr_phy_ctlr_1_init, &emif->emif_ddr_phy_ctrl_1); /* Update timing registers */ @@ -283,15 +319,24 @@ static void ddr3_init(u32 base, const struct emif_regs *regs) writel(regs->ref_ctrl, &emif->emif_sdram_ref_ctrl); writel(regs->read_idle_ctrl, &emif->emif_read_idlectrl); - do_ext_phy_settings(base, regs); + /* + * The same sequence should work on OMAP5432 as well. But strange that + * it is not working + */ + if (omap_revision() == DRA752_ES1_0) { + do_ext_phy_settings(base, regs); + writel(regs->sdram_config2, &emif->emif_lpddr2_nvm_config); + writel(regs->sdram_config_init, &emif->emif_sdram_config); + } else { + writel(regs->sdram_config2, &emif->emif_lpddr2_nvm_config); + writel(regs->sdram_config_init, &emif->emif_sdram_config); + do_ext_phy_settings(base, regs); + } /* enable leveling */ writel(regs->emif_rd_wr_lvl_rmp_ctl, &emif->emif_rd_wr_lvl_rmp_ctl); - if (omap_revision() == DRA752_ES1_0) - ddr3_sw_leveling(base, regs); - else - ddr3_leveling(base, regs); + ddr3_leveling(base, regs); } #ifndef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS @@ -1079,10 +1124,7 @@ static void do_sdram_init(u32 base) if (warm_reset() && (emif_sdram_type() == EMIF_SDRAM_TYPE_DDR3)) { set_lpmode_selfrefresh(base); emif_reset_phy(base); - if (omap_revision() == DRA752_ES1_0) - ddr3_sw_leveling(base, regs); - else - ddr3_leveling(base, regs); + ddr3_leveling(base, regs); } /* Write to the shadow registers */ @@ -1244,6 +1286,42 @@ void dmm_init(u32 base) } +static void do_bug0039_workaround(u32 base) +{ + u32 val, i, clkctrl; + struct emif_reg_struct *emif_base = (struct emif_reg_struct *)base; + const struct read_write_regs *bug_00339_regs; + u32 iterations; + u32 *phy_status_base = &emif_base->emif_ddr_phy_status[0]; + u32 *phy_ctrl_base = &emif_base->emif_ddr_ext_phy_ctrl_1; + + if (is_dra7xx()) + phy_status_base++; + + bug_00339_regs = get_bug_regs(&iterations); + + /* Put EMIF in to idle */ + clkctrl = __raw_readl((*prcm)->cm_memif_clkstctrl); + __raw_writel(0x0, (*prcm)->cm_memif_clkstctrl); + + /* Copy the phy status registers in to phy ctrl shadow registers */ + for (i = 0; i < iterations; i++) { + val = __raw_readl(phy_status_base + + bug_00339_regs[i].read_reg - 1); + + __raw_writel(val, phy_ctrl_base + + ((bug_00339_regs[i].write_reg - 1) << 1)); + + __raw_writel(val, phy_ctrl_base + + (bug_00339_regs[i].write_reg << 1) - 1); + } + + /* Disable leveling */ + writel(0x0, &emif_base->emif_rd_wr_lvl_rmp_ctl); + + __raw_writel(clkctrl, (*prcm)->cm_memif_clkstctrl); +} + /* * SDRAM initialization: * SDRAM initialization has two parts: @@ -1319,5 +1397,11 @@ void sdram_init(void) debug("get_ram_size() successful"); } + if (sdram_type == EMIF_SDRAM_TYPE_DDR3 && + (!in_sdram && !warm_reset())) { + do_bug0039_workaround(EMIF1_BASE); + do_bug0039_workaround(EMIF2_BASE); + } + debug("<<sdram_init()\n"); } diff --git a/arch/arm/cpu/armv7/omap-common/pipe3-phy.c b/arch/arm/cpu/armv7/omap-common/pipe3-phy.c new file mode 100644 index 0000000000..b71d769410 --- /dev/null +++ b/arch/arm/cpu/armv7/omap-common/pipe3-phy.c @@ -0,0 +1,231 @@ +/* + * TI PIPE3 PHY + * + * (C) Copyright 2013 + * Texas Instruments, <www.ti.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <sata.h> +#include <asm/arch/clock.h> +#include <asm/arch/sys_proto.h> +#include <asm/io.h> +#include <asm/errno.h> +#include "pipe3-phy.h" + +/* PLLCTRL Registers */ +#define PLL_STATUS 0x00000004 +#define PLL_GO 0x00000008 +#define PLL_CONFIGURATION1 0x0000000C +#define PLL_CONFIGURATION2 0x00000010 +#define PLL_CONFIGURATION3 0x00000014 +#define PLL_CONFIGURATION4 0x00000020 + +#define PLL_REGM_MASK 0x001FFE00 +#define PLL_REGM_SHIFT 9 +#define PLL_REGM_F_MASK 0x0003FFFF +#define PLL_REGM_F_SHIFT 0 +#define PLL_REGN_MASK 0x000001FE +#define PLL_REGN_SHIFT 1 +#define PLL_SELFREQDCO_MASK 0x0000000E +#define PLL_SELFREQDCO_SHIFT 1 +#define PLL_SD_MASK 0x0003FC00 +#define PLL_SD_SHIFT 10 +#define SET_PLL_GO 0x1 +#define PLL_TICOPWDN BIT(16) +#define PLL_LDOPWDN BIT(15) +#define PLL_LOCK 0x2 +#define PLL_IDLE 0x1 + +/* PHY POWER CONTROL Register */ +#define OMAP_CTRL_PIPE3_PHY_PWRCTL_CLK_CMD_MASK 0x003FC000 +#define OMAP_CTRL_PIPE3_PHY_PWRCTL_CLK_CMD_SHIFT 0xE + +#define OMAP_CTRL_PIPE3_PHY_PWRCTL_CLK_FREQ_MASK 0xFFC00000 +#define OMAP_CTRL_PIPE3_PHY_PWRCTL_CLK_FREQ_SHIFT 0x16 + +#define OMAP_CTRL_PIPE3_PHY_TX_RX_POWERON 0x3 +#define OMAP_CTRL_PIPE3_PHY_TX_RX_POWEROFF 0x0 + + +#define PLL_IDLE_TIME 100 /* in milliseconds */ +#define PLL_LOCK_TIME 100 /* in milliseconds */ + +static inline u32 omap_pipe3_readl(void __iomem *addr, unsigned offset) +{ + return __raw_readl(addr + offset); +} + +static inline void omap_pipe3_writel(void __iomem *addr, unsigned offset, + u32 data) +{ + __raw_writel(data, addr + offset); +} + +static struct pipe3_dpll_params *omap_pipe3_get_dpll_params(struct omap_pipe3 + *pipe3) +{ + u32 rate; + struct pipe3_dpll_map *dpll_map = pipe3->dpll_map; + + rate = get_sys_clk_freq(); + + for (; dpll_map->rate; dpll_map++) { + if (rate == dpll_map->rate) + return &dpll_map->params; + } + + printf("%s: No DPLL configuration for %u Hz SYS CLK\n", + __func__, rate); + return NULL; +} + + +static int omap_pipe3_wait_lock(struct omap_pipe3 *phy) +{ + u32 val; + int timeout = PLL_LOCK_TIME; + + do { + mdelay(1); + val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_STATUS); + if (val & PLL_LOCK) + break; + } while (--timeout); + + if (!(val & PLL_LOCK)) { + printf("%s: DPLL failed to lock\n", __func__); + return -EBUSY; + } + + return 0; +} + +static int omap_pipe3_dpll_program(struct omap_pipe3 *phy) +{ + u32 val; + struct pipe3_dpll_params *dpll_params; + + dpll_params = omap_pipe3_get_dpll_params(phy); + if (!dpll_params) { + printf("%s: Invalid DPLL parameters\n", __func__); + return -EINVAL; + } + + val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION1); + val &= ~PLL_REGN_MASK; + val |= dpll_params->n << PLL_REGN_SHIFT; + omap_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION1, val); + + val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); + val &= ~PLL_SELFREQDCO_MASK; + val |= dpll_params->freq << PLL_SELFREQDCO_SHIFT; + omap_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val); + + val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION1); + val &= ~PLL_REGM_MASK; + val |= dpll_params->m << PLL_REGM_SHIFT; + omap_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION1, val); + + val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION4); + val &= ~PLL_REGM_F_MASK; + val |= dpll_params->mf << PLL_REGM_F_SHIFT; + omap_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION4, val); + + val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION3); + val &= ~PLL_SD_MASK; + val |= dpll_params->sd << PLL_SD_SHIFT; + omap_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION3, val); + + omap_pipe3_writel(phy->pll_ctrl_base, PLL_GO, SET_PLL_GO); + + return omap_pipe3_wait_lock(phy); +} + +static void omap_control_phy_power(struct omap_pipe3 *phy, int on) +{ + u32 val, rate; + + val = readl(phy->power_reg); + + rate = get_sys_clk_freq(); + rate = rate/1000000; + + if (on) { + val &= ~(OMAP_CTRL_PIPE3_PHY_PWRCTL_CLK_CMD_MASK | + OMAP_CTRL_PIPE3_PHY_PWRCTL_CLK_FREQ_MASK); + val |= OMAP_CTRL_PIPE3_PHY_TX_RX_POWERON << + OMAP_CTRL_PIPE3_PHY_PWRCTL_CLK_CMD_SHIFT; + val |= rate << + OMAP_CTRL_PIPE3_PHY_PWRCTL_CLK_FREQ_SHIFT; + } else { + val &= ~OMAP_CTRL_PIPE3_PHY_PWRCTL_CLK_CMD_MASK; + val |= OMAP_CTRL_PIPE3_PHY_TX_RX_POWEROFF << + OMAP_CTRL_PIPE3_PHY_PWRCTL_CLK_CMD_SHIFT; + } + + writel(val, phy->power_reg); +} + +int phy_pipe3_power_on(struct omap_pipe3 *phy) +{ + int ret; + u32 val; + + /* Program the DPLL only if not locked */ + val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_STATUS); + if (!(val & PLL_LOCK)) { + ret = omap_pipe3_dpll_program(phy); + if (ret) + return ret; + } else { + /* else just bring it out of IDLE mode */ + val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); + if (val & PLL_IDLE) { + val &= ~PLL_IDLE; + omap_pipe3_writel(phy->pll_ctrl_base, + PLL_CONFIGURATION2, val); + ret = omap_pipe3_wait_lock(phy); + if (ret) + return ret; + } + } + + /* Power up the PHY */ + omap_control_phy_power(phy, 1); + + return 0; +} + +int phy_pipe3_power_off(struct omap_pipe3 *phy) +{ + u32 val; + int timeout = PLL_IDLE_TIME; + + /* Power down the PHY */ + omap_control_phy_power(phy, 0); + + /* Put DPLL in IDLE mode */ + val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); + val |= PLL_IDLE; + omap_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val); + + /* wait for LDO and Oscillator to power down */ + do { + mdelay(1); + val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_STATUS); + if ((val & PLL_TICOPWDN) && (val & PLL_LDOPWDN)) + break; + } while (--timeout); + + if (!(val & PLL_TICOPWDN) || !(val & PLL_LDOPWDN)) { + printf("%s: Failed to power down DPLL: PLL_STATUS 0x%x\n", + __func__, val); + return -EBUSY; + } + + return 0; +} + diff --git a/arch/arm/cpu/armv7/omap-common/pipe3-phy.h b/arch/arm/cpu/armv7/omap-common/pipe3-phy.h new file mode 100644 index 0000000000..441f49a3f9 --- /dev/null +++ b/arch/arm/cpu/armv7/omap-common/pipe3-phy.h @@ -0,0 +1,36 @@ +/* + * TI PIPE3 PHY + * + * (C) Copyright 2013 + * Texas Instruments, <www.ti.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __OMAP_PIPE3_PHY_H +#define __OMAP_PIPE3_PHY_H + +struct pipe3_dpll_params { + u16 m; + u8 n; + u8 freq:3; + u8 sd; + u32 mf; +}; + +struct pipe3_dpll_map { + unsigned long rate; + struct pipe3_dpll_params params; +}; + +struct omap_pipe3 { + void __iomem *pll_ctrl_base; + void __iomem *power_reg; + struct pipe3_dpll_map *dpll_map; +}; + + +int phy_pipe3_power_on(struct omap_pipe3 *phy); +int phy_pipe3_power_off(struct omap_pipe3 *pipe3); + +#endif /* __OMAP_PIPE3_PHY_H */ diff --git a/arch/arm/cpu/armv7/omap-common/sata.c b/arch/arm/cpu/armv7/omap-common/sata.c new file mode 100644 index 0000000000..f5468c4c97 --- /dev/null +++ b/arch/arm/cpu/armv7/omap-common/sata.c @@ -0,0 +1,75 @@ +/* + * TI SATA platform driver + * + * (C) Copyright 2013 + * Texas Instruments, <www.ti.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <ahci.h> +#include <scsi.h> +#include <asm/arch/clock.h> +#include <asm/arch/sata.h> +#include <asm/io.h> +#include "pipe3-phy.h" + +static struct pipe3_dpll_map dpll_map_sata[] = { + {12000000, {1000, 7, 4, 6, 0} }, /* 12 MHz */ + {16800000, {714, 7, 4, 6, 0} }, /* 16.8 MHz */ + {19200000, {625, 7, 4, 6, 0} }, /* 19.2 MHz */ + {20000000, {600, 7, 4, 6, 0} }, /* 20 MHz */ + {26000000, {461, 7, 4, 6, 0} }, /* 26 MHz */ + {38400000, {312, 7, 4, 6, 0} }, /* 38.4 MHz */ + { }, /* Terminator */ +}; + +struct omap_pipe3 sata_phy = { + .pll_ctrl_base = (void __iomem *)TI_SATA_PLLCTRL_BASE, + /* .power_reg is updated at runtime */ + .dpll_map = dpll_map_sata, +}; + +int omap_sata_init(void) +{ + int ret; + u32 val; + + u32 const clk_domains_sata[] = { + 0 + }; + + u32 const clk_modules_hw_auto_sata[] = { + (*prcm)->cm_l3init_ocp2scp3_clkctrl, + 0 + }; + + u32 const clk_modules_explicit_en_sata[] = { + (*prcm)->cm_l3init_sata_clkctrl, + 0 + }; + + do_enable_clocks(clk_domains_sata, + clk_modules_hw_auto_sata, + clk_modules_explicit_en_sata, + 0); + + /* Enable optional functional clock for SATA */ + setbits_le32((*prcm)->cm_l3init_sata_clkctrl, + SATA_CLKCTRL_OPTFCLKEN_MASK); + + sata_phy.power_reg = (void __iomem *)(*ctrl)->control_phy_power_sata; + + /* Power up the PHY */ + phy_pipe3_power_on(&sata_phy); + + /* Enable SATA module, No Idle, No Standby */ + val = TI_SATA_IDLE_NO | TI_SATA_STANDBY_NO; + writel(val, TI_SATA_WRAPPER_BASE + TI_SATA_SYSCONFIG); + + ret = ahci_init(DWC_AHSATA_BASE); + scsi_scan(1); + + return ret; +} |
