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arm: socfpga: add functions to bring sdram, timer, and uart out of reset 

These functions will be needed for use by the SPL for enabling the
console and sdram initialization.

Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Pavel Machek <pavel@denx.de>
This commit is contained in:
Dinh Nguyen 2015-03-30 17:01:04 -05:00 committed by Marek Vasut
parent 6868160ab1
commit c218f85ea1
2 changed files with 30 additions and 0 deletions
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24
arch/arm/cpu/armv7/socfpga/reset_manager.c
View File

@ -113,3 +113,27 @@ void socfpga_spim_enable(void)
clrbits_le32(reset, (1 << RSTMGR_PERMODRST_SPIM0_LSB) |
(1 << RSTMGR_PERMODRST_SPIM1_LSB));
}
/* Bring UART0 out of reset. */
void socfpga_uart0_enable(void)
{
const void *reset = &reset_manager_base->per_mod_reset;
clrbits_le32(reset, 1 << RSTMGR_PERMODRST_UART0_LSB);
}
/* Bring SDRAM controller out of reset. */
void socfpga_sdram_enable(void)
{
const void *reset = &reset_manager_base->per_mod_reset;
clrbits_le32(reset, 1 << RSTMGR_PERMODRST_SDR_LSB);
}
/* Bring OSC1 timer out of reset. */
void socfpga_osc1timer_enable(void)
{
const void *reset = &reset_manager_base->per_mod_reset;
clrbits_le32(reset, 1 << RSTMGR_PERMODRST_OSC1TIMER0_LSB);
}

6
arch/arm/include/asm/arch-socfpga/reset_manager.h
View File

@ -15,6 +15,9 @@ void socfpga_bridges_reset(int enable);
void socfpga_emac_reset(int enable);
void socfpga_watchdog_reset(void);
void socfpga_spim_enable(void);
void socfpga_uart0_enable(void);
void socfpga_sdram_enable(void);
void socfpga_osc1timer_enable(void);
struct socfpga_reset_manager {
u32 status;
@ -36,7 +39,10 @@ struct socfpga_reset_manager {
#define RSTMGR_PERMODRST_EMAC0_LSB 0
#define RSTMGR_PERMODRST_EMAC1_LSB 1
#define RSTMGR_PERMODRST_L4WD0_LSB 6
#define RSTMGR_PERMODRST_OSC1TIMER0_LSB 8
#define RSTMGR_PERMODRST_UART0_LSB 16
#define RSTMGR_PERMODRST_SPIM0_LSB 18
#define RSTMGR_PERMODRST_SPIM1_LSB 19
#define RSTMGR_PERMODRST_SDR_LSB 29
#endif /* _RESET_MANAGER_H_ */