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>
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 @@
}
/*
+ * 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)