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| author | Marek Vasut <marex@denx.de> | 2015-07-09 04:27:28 +0200 |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2015-08-08 14:14:06 +0200 |
| commit | 3191611a05df993826a0d2d0d5607e5e38365cce (patch) | |
| tree | b9ef5762f0f672dcb8228549e15ba6f8ab89bca1 /arch/arm/mach-socfpga | |
| parent | 292260ca21723ab78d23fa2cf6b574cf17778991 (diff) | |
| download | u-boot-imx-3191611a05df993826a0d2d0d5607e5e38365cce.zip u-boot-imx-3191611a05df993826a0d2d0d5607e5e38365cce.tar.gz u-boot-imx-3191611a05df993826a0d2d0d5607e5e38365cce.tar.bz2 | |
arm: socfpga: reset: Add function to reset add peripherals
Add socfpga_per_reset_all() function to reset all peripherals
but the L4 watchdog. This is needed in the SPL.
Signed-off-by: Marek Vasut <marex@denx.de>
Diffstat (limited to 'arch/arm/mach-socfpga')
| -rw-r--r-- | arch/arm/mach-socfpga/include/mach/reset_manager.h | 1 | ||||
| -rw-r--r-- | arch/arm/mach-socfpga/reset_manager.c | 13 |
2 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/mach-socfpga/include/mach/reset_manager.h b/arch/arm/mach-socfpga/include/mach/reset_manager.h index 97f155d..457c4b8 100644 --- a/arch/arm/mach-socfpga/include/mach/reset_manager.h +++ b/arch/arm/mach-socfpga/include/mach/reset_manager.h @@ -13,6 +13,7 @@ void reset_deassert_peripherals_handoff(void); void socfpga_bridges_reset(int enable); void socfpga_per_reset(u32 reset, int set); +void socfpga_per_reset_all(void); struct socfpga_reset_manager { u32 status; diff --git a/arch/arm/mach-socfpga/reset_manager.c b/arch/arm/mach-socfpga/reset_manager.c index 6a11c19..1186358 100644 --- a/arch/arm/mach-socfpga/reset_manager.c +++ b/arch/arm/mach-socfpga/reset_manager.c @@ -40,6 +40,19 @@ void socfpga_per_reset(u32 reset, int set) } /* + * Assert reset on every peripheral but L4WD0. + * Watchdog must be kept intact to prevent glitches + * and/or hangs. + */ +void socfpga_per_reset_all(void) +{ + const u32 l4wd0 = 1 << RSTMGR_RESET(SOCFPGA_RESET(L4WD0)); + + writel(~l4wd0, &reset_manager_base->per_mod_reset); + writel(0xffffffff, &reset_manager_base->per2_mod_reset); +} + +/* * Write the reset manager register to cause reset */ void reset_cpu(ulong addr) |