From c218f85ea18d57beecc36a3460f08e929d81fcd6 Mon Sep 17 00:00:00 2001
From: Dinh Nguyen <dinguyen@opensource.altera.com>
Date: Mon, 30 Mar 2015 17:01:04 -0500
Subject: [PATCH] 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>
---
arch/arm/cpu/armv7/socfpga/reset_manager.c | 24 +++++++++++++++++++
.../include/asm/arch-socfpga/reset_manager.h | 6 +++++
2 files changed, 30 insertions(+)
diff --git a/arch/arm/cpu/armv7/socfpga/reset_manager.c b/arch/arm/cpu/armv7/socfpga/reset_manager.c
index 25921e76c4..45b352bdfc 100644
--- a/arch/arm/cpu/armv7/socfpga/reset_manager.c
+++ b/arch/arm/cpu/armv7/socfpga/reset_manager.c
@@ -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);
+}
diff --git a/arch/arm/include/asm/arch-socfpga/reset_manager.h b/arch/arm/include/asm/arch-socfpga/reset_manager.h
index 034135bff4..d63a285091 100644
--- a/arch/arm/include/asm/arch-socfpga/reset_manager.h
+++ b/arch/arm/include/asm/arch-socfpga/reset_manager.h
@@ -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_ */
--
2.39.5