From: Dinh Nguyen dinguyen@opensource.altera.com
Signed-off-by: Dinh Nguyen dinguyen@opensource.altera.com --- arch/arm/cpu/armv7/socfpga/spl.c | 3 +++ arch/arm/cpu/armv7/socfpga/system_manager.c | 9 +++++++++ arch/arm/include/asm/arch-socfpga/system_manager.h | 1 + 3 files changed, 13 insertions(+)
diff --git a/arch/arm/cpu/armv7/socfpga/spl.c b/arch/arm/cpu/armv7/socfpga/spl.c index bc6f8dd..9ef2983 100644 --- a/arch/arm/cpu/armv7/socfpga/spl.c +++ b/arch/arm/cpu/armv7/socfpga/spl.c @@ -155,6 +155,9 @@ void spl_board_init(void) /* reconfigure the PLLs */ cm_basic_init(&cm_default_cfg);
+ /* Enable bootrom to configure IOs. */ + sysmgr_enable_warmrstcfgio(); + /* configure the IOCSR / IO buffer settings */ if (scan_mgr_configure_iocsr()) hang(); diff --git a/arch/arm/cpu/armv7/socfpga/system_manager.c b/arch/arm/cpu/armv7/socfpga/system_manager.c index 11f7bad..8126e0d 100644 --- a/arch/arm/cpu/armv7/socfpga/system_manager.c +++ b/arch/arm/cpu/armv7/socfpga/system_manager.c @@ -66,3 +66,12 @@ void sysmgr_pinmux_init(void)
populate_sysmgr_fpgaintf_module(); } + +/* + * This bit allows the bootrom to configure the IOs after a warm reset. + */ +void sysmgr_enable_warmrstcfgio(void) +{ + setbits_le32(&sysmgr_regs->romcodegrp_ctrl, + SYSMGR_ROMCODEGRP_CTRL_WARMRSTCFGIO); +} diff --git a/arch/arm/include/asm/arch-socfpga/system_manager.h b/arch/arm/include/asm/arch-socfpga/system_manager.h index 071ec4f..51d9815 100644 --- a/arch/arm/include/asm/arch-socfpga/system_manager.h +++ b/arch/arm/include/asm/arch-socfpga/system_manager.h @@ -10,6 +10,7 @@ #ifndef __ASSEMBLY__
void sysmgr_pinmux_init(void); +void sysmgr_enable_warmrstcfgio(void);
/* declaration for handoff table type */ extern unsigned long sys_mgr_init_table[CONFIG_HPS_PINMUX_NUM];