diff options
| -rw-r--r-- | arch/arm/cpu/armv7/omap4/sdram_elpida.c | 4 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-omap4/sys_proto.h | 4 | ||||
| -rw-r--r-- | board/ti/panda/panda.c | 60 |
3 files changed, 66 insertions, 2 deletions
diff --git a/arch/arm/cpu/armv7/omap4/sdram_elpida.c b/arch/arm/cpu/armv7/omap4/sdram_elpida.c index 811e776..6903696 100644 --- a/arch/arm/cpu/armv7/omap4/sdram_elpida.c +++ b/arch/arm/cpu/armv7/omap4/sdram_elpida.c @@ -32,7 +32,7 @@ #ifdef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS -static const struct emif_regs emif_regs_elpida_200_mhz_2cs = { +const struct emif_regs emif_regs_elpida_200_mhz_2cs = { .sdram_config_init = 0x80000eb9, .sdram_config = 0x80001ab9, .ref_ctrl = 0x0000030c, @@ -46,7 +46,7 @@ static const struct emif_regs emif_regs_elpida_200_mhz_2cs = { .emif_ddr_phy_ctlr_1 = 0x049ff808 }; -static const struct emif_regs emif_regs_elpida_380_mhz_1cs = { +const struct emif_regs emif_regs_elpida_380_mhz_1cs = { .sdram_config_init = 0x80000eb1, .sdram_config = 0x80001ab1, .ref_ctrl = 0x000005cd, diff --git a/arch/arm/include/asm/arch-omap4/sys_proto.h b/arch/arm/include/asm/arch-omap4/sys_proto.h index 39c5316..ce8217f 100644 --- a/arch/arm/include/asm/arch-omap4/sys_proto.h +++ b/arch/arm/include/asm/arch-omap4/sys_proto.h @@ -16,6 +16,10 @@ DECLARE_GLOBAL_DATA_PTR; +extern const struct emif_regs emif_regs_elpida_200_mhz_2cs; +extern const struct emif_regs emif_regs_elpida_380_mhz_1cs; +extern const struct emif_regs emif_regs_elpida_400_mhz_1cs; +extern const struct emif_regs emif_regs_elpida_400_mhz_2cs; struct omap_sysinfo { char *board_string; }; diff --git a/board/ti/panda/panda.c b/board/ti/panda/panda.c index c104024..cda09a9 100644 --- a/board/ti/panda/panda.c +++ b/board/ti/panda/panda.c @@ -123,6 +123,66 @@ int get_board_revision(void) } /** + * is_panda_es_rev_b3() - Detect if we are running on rev B3 of panda board ES + * + * + * Detect if we are running on B3 version of ES panda board, + * This can be done by reading the level of GPIO 171 and checking the + * processor revisions. + * GPIO171: 1 => Panda ES Rev B3 + * + * Return : return 1 if Panda ES Rev B3 , else return 0 + */ +u8 is_panda_es_rev_b3(void) +{ + int processor_rev = omap_revision(); + int ret = 0; + + if ((processor_rev >= OMAP4460_ES1_0 && + processor_rev <= OMAP4460_ES1_1)) { + + /* Setup the mux for the common board ID pins (gpio 171) */ + writew((IEN | M3), + (*ctrl)->control_padconf_core_base + UNIPRO_TX0); + + /* if processor_rev is panda ES and GPIO171 is 1,it is rev b3 */ + ret = gpio_get_value(PANDA_BOARD_ID_2_GPIO); + } + return ret; +} + +#ifdef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS +/* + * emif_get_reg_dump() - emif_get_reg_dump strong function + * + * @emif_nr - emif base + * @regs - reg dump of timing values + * + * Strong function to override emif_get_reg_dump weak function in sdram_elpida.c + */ +void emif_get_reg_dump(u32 emif_nr, const struct emif_regs **regs) +{ + u32 omap4_rev = omap_revision(); + + /* Same devices and geometry on both EMIFs */ + if (omap4_rev == OMAP4430_ES1_0) + *regs = &emif_regs_elpida_380_mhz_1cs; + else if (omap4_rev == OMAP4430_ES2_0) + *regs = &emif_regs_elpida_200_mhz_2cs; + else if (omap4_rev == OMAP4430_ES2_3) + *regs = &emif_regs_elpida_400_mhz_1cs; + else if (omap4_rev < OMAP4470_ES1_0) { + if(is_panda_es_rev_b3()) + *regs = &emif_regs_elpida_400_mhz_1cs; + else + *regs = &emif_regs_elpida_400_mhz_2cs; + } + else + *regs = &emif_regs_elpida_400_mhz_1cs; +} +#endif + +/** * @brief misc_init_r - Configure Panda board specific configurations * such as power configurations, ethernet initialization as phase2 of * boot sequence |