diff options
| -rw-r--r-- | arch/arm/cpu/armv7/am33xx/clock.c | 12 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/am33xx/clock_am33xx.c | 15 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/am33xx/clock_am43xx.c | 8 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-am33xx/clock.h | 7 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-am33xx/cpu.h | 2 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-am33xx/hardware_am43xx.h | 13 | ||||
| -rw-r--r-- | board/ti/am43xx/board.c | 138 | ||||
| -rw-r--r-- | board/ti/am43xx/board.h | 4 | ||||
| -rw-r--r-- | board/ti/am43xx/mux.c | 5 |
9 files changed, 187 insertions, 17 deletions
diff --git a/arch/arm/cpu/armv7/am33xx/clock.c b/arch/arm/cpu/armv7/am33xx/clock.c index 8e5f3c671..0672798fe 100644 --- a/arch/arm/cpu/armv7/am33xx/clock.c +++ b/arch/arm/cpu/armv7/am33xx/clock.c @@ -101,9 +101,15 @@ void do_setup_dpll(const struct dpll_regs *dpll_regs, static void setup_dplls(void) { const struct dpll_params *params; - do_setup_dpll(&dpll_core_regs, &dpll_core); - do_setup_dpll(&dpll_mpu_regs, &dpll_mpu); - do_setup_dpll(&dpll_per_regs, &dpll_per); + + params = get_dpll_core_params(); + do_setup_dpll(&dpll_core_regs, params); + + params = get_dpll_mpu_params(); + do_setup_dpll(&dpll_mpu_regs, params); + + params = get_dpll_per_params(); + do_setup_dpll(&dpll_per_regs, params); writel(0x300, &cmwkup->clkdcoldodpllper); params = get_dpll_ddr_params(); diff --git a/arch/arm/cpu/armv7/am33xx/clock_am33xx.c b/arch/arm/cpu/armv7/am33xx/clock_am33xx.c index fabe2595a..92142c893 100644 --- a/arch/arm/cpu/armv7/am33xx/clock_am33xx.c +++ b/arch/arm/cpu/armv7/am33xx/clock_am33xx.c @@ -62,6 +62,21 @@ const struct dpll_params dpll_core = { const struct dpll_params dpll_per = { 960, OSC-1, 5, -1, -1, -1, -1}; +const struct dpll_params *get_dpll_mpu_params(void) +{ + return &dpll_mpu; +} + +const struct dpll_params *get_dpll_core_params(void) +{ + return &dpll_core; +} + +const struct dpll_params *get_dpll_per_params(void) +{ + return &dpll_per; +} + void setup_clocks_for_console(void) { clrsetbits_le32(&cmwkup->wkclkstctrl, CD_CLKCTRL_CLKTRCTRL_MASK, diff --git a/arch/arm/cpu/armv7/am33xx/clock_am43xx.c b/arch/arm/cpu/armv7/am33xx/clock_am43xx.c index 22963b7f8..97c00b492 100644 --- a/arch/arm/cpu/armv7/am33xx/clock_am43xx.c +++ b/arch/arm/cpu/armv7/am33xx/clock_am43xx.c @@ -48,15 +48,9 @@ const struct dpll_regs dpll_ddr_regs = { .cm_idlest_dpll = CM_WKUP + 0x5A4, .cm_clksel_dpll = CM_WKUP + 0x5AC, .cm_div_m2_dpll = CM_WKUP + 0x5B0, + .cm_div_m4_dpll = CM_WKUP + 0x5B8, }; -const struct dpll_params dpll_mpu = { - -1, -1, -1, -1, -1, -1, -1}; -const struct dpll_params dpll_core = { - -1, -1, -1, -1, -1, -1, -1}; -const struct dpll_params dpll_per = { - -1, -1, -1, -1, -1, -1, -1}; - void setup_clocks_for_console(void) { /* Do not add any spl_debug prints in this function */ diff --git a/arch/arm/include/asm/arch-am33xx/clock.h b/arch/arm/include/asm/arch-am33xx/clock.h index 519249e4a..763745754 100644 --- a/arch/arm/include/asm/arch-am33xx/clock.h +++ b/arch/arm/include/asm/arch-am33xx/clock.h @@ -98,13 +98,12 @@ extern const struct dpll_regs dpll_mpu_regs; extern const struct dpll_regs dpll_core_regs; extern const struct dpll_regs dpll_per_regs; extern const struct dpll_regs dpll_ddr_regs; -extern const struct dpll_params dpll_mpu; -extern const struct dpll_params dpll_core; -extern const struct dpll_params dpll_per; -extern const struct dpll_params dpll_ddr; extern struct cm_wkuppll *const cmwkup; +const struct dpll_params *get_dpll_mpu_params(void); +const struct dpll_params *get_dpll_core_params(void); +const struct dpll_params *get_dpll_per_params(void); const struct dpll_params *get_dpll_ddr_params(void); void do_setup_dpll(const struct dpll_regs *, const struct dpll_params *); void prcm_init(void); diff --git a/arch/arm/include/asm/arch-am33xx/cpu.h b/arch/arm/include/asm/arch-am33xx/cpu.h index 19b84690a..3ee37dc4e 100644 --- a/arch/arm/include/asm/arch-am33xx/cpu.h +++ b/arch/arm/include/asm/arch-am33xx/cpu.h @@ -480,6 +480,8 @@ struct ctrl_stat { unsigned int statusreg; /* ofset 0x40 */ unsigned int resv2[51]; unsigned int secure_emif_sdram_config; /* offset 0x0110 */ + unsigned int resv3[319]; + unsigned int dev_attr; }; /* AM33XX GPIO registers */ diff --git a/arch/arm/include/asm/arch-am33xx/hardware_am43xx.h b/arch/arm/include/asm/arch-am33xx/hardware_am43xx.h index 0a3f8ee32..468521bf3 100644 --- a/arch/arm/include/asm/arch-am33xx/hardware_am43xx.h +++ b/arch/arm/include/asm/arch-am33xx/hardware_am43xx.h @@ -63,4 +63,17 @@ #define PRM_PER_USBPHYOCP2SCP1_CLKCTRL (CM_PER + 0x5c0) #define USBPHYOCPSCP_MODULE_EN (1 << 1) +/* Control status register */ +#define CTRL_CRYSTAL_FREQ_SRC_MASK (1 << 31) +#define CTRL_CRYSTAL_FREQ_SRC_SHIFT 31 +#define CTRL_CRYSTAL_FREQ_SELECTION_MASK (0x3 << 29) +#define CTRL_CRYSTAL_FREQ_SELECTION_SHIFT 29 +#define CTRL_SYSBOOT_15_14_MASK (0x3 << 22) +#define CTRL_SYSBOOT_15_14_SHIFT 22 + +#define CTRL_CRYSTAL_FREQ_SRC_SYSBOOT 0x0 +#define CTRL_CRYSTAL_FREQ_SRC_EFUSE 0x1 + +#define NUM_CRYSTAL_FREQ 0x4 + #endif /* __AM43XX_HARDWARE_AM43XX_H */ diff --git a/board/ti/am43xx/board.c b/board/ti/am43xx/board.c index 723d0ca32..5c92ac7f3 100644 --- a/board/ti/am43xx/board.c +++ b/board/ti/am43xx/board.c @@ -65,12 +65,144 @@ static int read_eeprom(struct am43xx_board_id *header) #ifdef CONFIG_SPL_BUILD -const struct dpll_params dpll_ddr = { - -1, -1, -1, -1, -1, -1, -1}; +#define NUM_OPPS 6 + +const struct dpll_params dpll_mpu[NUM_CRYSTAL_FREQ][NUM_OPPS] = { + { /* 19.2 MHz */ + {-1, -1, -1, -1, -1, -1, -1}, /* OPP 50 */ + {-1, -1, -1, -1, -1, -1, -1}, /* OPP RESERVED */ + {-1, -1, -1, -1, -1, -1, -1}, /* OPP 100 */ + {-1, -1, -1, -1, -1, -1, -1}, /* OPP 120 */ + {-1, -1, -1, -1, -1, -1, -1}, /* OPP TB */ + {-1, -1, -1, -1, -1, -1, -1} /* OPP NT */ + }, + { /* 24 MHz */ + {300, 23, 1, -1, -1, -1, -1}, /* OPP 50 */ + {-1, -1, -1, -1, -1, -1, -1}, /* OPP RESERVED */ + {600, 23, 1, -1, -1, -1, -1}, /* OPP 100 */ + {720, 23, 1, -1, -1, -1, -1}, /* OPP 120 */ + {800, 23, 1, -1, -1, -1, -1}, /* OPP TB */ + {1000, 23, 1, -1, -1, -1, -1} /* OPP NT */ + }, + { /* 25 MHz */ + {300, 24, 1, -1, -1, -1, -1}, /* OPP 50 */ + {-1, -1, -1, -1, -1, -1, -1}, /* OPP RESERVED */ + {600, 24, 1, -1, -1, -1, -1}, /* OPP 100 */ + {720, 24, 1, -1, -1, -1, -1}, /* OPP 120 */ + {800, 24, 1, -1, -1, -1, -1}, /* OPP TB */ + {1000, 24, 1, -1, -1, -1, -1} /* OPP NT */ + }, + { /* 26 MHz */ + {300, 25, 1, -1, -1, -1, -1}, /* OPP 50 */ + {-1, -1, -1, -1, -1, -1, -1}, /* OPP RESERVED */ + {600, 25, 1, -1, -1, -1, -1}, /* OPP 100 */ + {720, 25, 1, -1, -1, -1, -1}, /* OPP 120 */ + {800, 25, 1, -1, -1, -1, -1}, /* OPP TB */ + {1000, 25, 1, -1, -1, -1, -1} /* OPP NT */ + }, +}; + +const struct dpll_params dpll_core[NUM_CRYSTAL_FREQ] = { + {-1, -1, -1, -1, -1, -1, -1}, /* 19.2 MHz */ + {1000, 23, -1, -1, 10, 8, 4}, /* 24 MHz */ + {1000, 24, -1, -1, 10, 8, 4}, /* 25 MHz */ + {1000, 25, -1, -1, 10, 8, 4} /* 26 MHz */ +}; + +const struct dpll_params dpll_per[NUM_CRYSTAL_FREQ] = { + {-1, -1, -1, -1, -1, -1, -1}, /* 19.2 MHz */ + {960, 23, 5, -1, -1, -1, -1}, /* 24 MHz */ + {960, 24, 5, -1, -1, -1, -1}, /* 25 MHz */ + {960, 25, 5, -1, -1, -1, -1} /* 26 MHz */ +}; + +const struct dpll_params epos_evm_dpll_ddr = { + 266, 24, 1, -1, 1, -1, -1}; + +const struct dpll_params gp_evm_dpll_ddr = { + 400, 23, 1, -1, 1, -1, -1}; const struct dpll_params *get_dpll_ddr_params(void) { - return &dpll_ddr; + struct am43xx_board_id header; + + enable_i2c0_pin_mux(); + i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED, CONFIG_SYS_OMAP24_I2C_SLAVE); + if (read_eeprom(&header) < 0) + puts("Could not get board ID.\n"); + + if (board_is_eposevm()) + return &epos_evm_dpll_ddr; + else if (board_is_gpevm()) + return &gp_evm_dpll_ddr; + + puts(" Board not supported\n"); + return NULL; +} + +/* + * get_sys_clk_index : returns the index of the sys_clk read from + * ctrl status register. This value is either + * read from efuse or sysboot pins. + */ +static u32 get_sys_clk_index(void) +{ + struct ctrl_stat *ctrl = (struct ctrl_stat *)CTRL_BASE; + u32 ind = readl(&ctrl->statusreg), src; + + src = (ind & CTRL_CRYSTAL_FREQ_SRC_MASK) >> CTRL_CRYSTAL_FREQ_SRC_SHIFT; + if (src == CTRL_CRYSTAL_FREQ_SRC_EFUSE) /* Value read from EFUSE */ + return ((ind & CTRL_CRYSTAL_FREQ_SELECTION_MASK) >> + CTRL_CRYSTAL_FREQ_SELECTION_SHIFT); + else /* Value read from SYS BOOT pins */ + return ((ind & CTRL_SYSBOOT_15_14_MASK) >> + CTRL_SYSBOOT_15_14_SHIFT); +} + +/* + * get_opp_offset: + * Returns the index for safest OPP of the device to boot. + * max_off: Index of the MAX OPP in DEV ATTRIBUTE register. + * min_off: Index of the MIN OPP in DEV ATTRIBUTE register. + * This data is read from dev_attribute register which is e-fused. + * A'1' in bit indicates OPP disabled and not available, a '0' indicates + * OPP available. Lowest OPP starts with min_off. So returning the + * bit with rightmost '0'. + */ +static int get_opp_offset(int max_off, int min_off) +{ + struct ctrl_stat *ctrl = (struct ctrl_stat *)CTRL_BASE; + int opp = readl(&ctrl->dev_attr), offset, i; + + for (i = max_off; i >= min_off; i--) { + offset = opp & (1 << i); + if (!offset) + return i; + } + + return min_off; +} + +const struct dpll_params *get_dpll_mpu_params(void) +{ + int opp = get_opp_offset(DEV_ATTR_MAX_OFFSET, DEV_ATTR_MIN_OFFSET); + u32 ind = get_sys_clk_index(); + + return &dpll_mpu[ind][opp]; +} + +const struct dpll_params *get_dpll_core_params(void) +{ + int ind = get_sys_clk_index(); + + return &dpll_core[ind]; +} + +const struct dpll_params *get_dpll_per_params(void) +{ + int ind = get_sys_clk_index(); + + return &dpll_per[ind]; } void set_uart_mux_conf(void) diff --git a/board/ti/am43xx/board.h b/board/ti/am43xx/board.h index 926889565..091162ee2 100644 --- a/board/ti/am43xx/board.h +++ b/board/ti/am43xx/board.h @@ -25,6 +25,9 @@ static char *const am43xx_board_name = (char *)AM4372_BOARD_NAME_START; #define HDR_ETH_ALEN 6 #define HDR_NAME_LEN 8 +#define DEV_ATTR_MAX_OFFSET 5 +#define DEV_ATTR_MIN_OFFSET 0 + struct am43xx_board_id { unsigned int magic; char name[HDR_NAME_LEN]; @@ -46,4 +49,5 @@ static inline int board_is_gpevm(void) void enable_uart0_pin_mux(void); void enable_board_pin_mux(void); +void enable_i2c0_pin_mux(void); #endif diff --git a/board/ti/am43xx/mux.c b/board/ti/am43xx/mux.c index 46bad0199..a2d72dde5 100644 --- a/board/ti/am43xx/mux.c +++ b/board/ti/am43xx/mux.c @@ -43,3 +43,8 @@ void enable_board_pin_mux(void) configure_module_pin_mux(mmc0_pin_mux); configure_module_pin_mux(i2c0_pin_mux); } + +void enable_i2c0_pin_mux(void) +{ + configure_module_pin_mux(i2c0_pin_mux); +} |