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authorMarek Vasut <marex@denx.de>2014-09-08 14:08:45 +0200
committerMarek Vasut <marex@denx.de>2014-10-06 17:46:49 +0200
commite9d6a20034788258bc5008dc2665aabe9ce28b1c (patch)
tree5f02fb8a2a83c4983a92daed5e0e3b1c4678b1e1 /arch
parent2110eeaf0fdf9b3b200076554d266459ca7ac26d (diff)
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arm: socfpga: reset: Add EMAC reset functions
Add functions to reset the EMAC ethernet blocks. We cannot handle two EMAC ethernet blocks yet, therefore the ifdefs. Once there is hardware using both EMAC blocks, this ifdef will have to go. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Chin Liang See <clsee@altera.com> Cc: Dinh Nguyen <dinguyen@altera.com> Cc: Albert Aribaud <albert.u.boot@aribaud.net> Cc: Tom Rini <trini@ti.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Pavel Machek <pavel@denx.de> Acked-by: Pavel Machek <pavel@denx.de>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/cpu/armv7/socfpga/reset_manager.c17
-rw-r--r--arch/arm/include/asm/arch-socfpga/reset_manager.h3
2 files changed, 20 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/socfpga/reset_manager.c b/arch/arm/cpu/armv7/socfpga/reset_manager.c
index 5d7aba4..badc569 100644
--- a/arch/arm/cpu/armv7/socfpga/reset_manager.c
+++ b/arch/arm/cpu/armv7/socfpga/reset_manager.c
@@ -49,3 +49,20 @@ void reset_deassert_peripherals_handoff(void)
{
writel(0, &reset_manager_base->per_mod_reset);
}
+
+/* Change the reset state for EMAC 0 and EMAC 1 */
+void socfpga_emac_reset(int enable)
+{
+ const void *reset = &reset_manager_base->per_mod_reset;
+
+ if (enable) {
+ setbits_le32(reset, 1 << RSTMGR_PERMODRST_EMAC0_LSB);
+ setbits_le32(reset, 1 << RSTMGR_PERMODRST_EMAC1_LSB);
+ } else {
+#if (CONFIG_EMAC_BASE == SOCFPGA_EMAC0_ADDRESS)
+ clrbits_le32(reset, 1 << RSTMGR_PERMODRST_EMAC0_LSB);
+#elif (CONFIG_EMAC_BASE == SOCFPGA_EMAC1_ADDRESS)
+ clrbits_le32(reset, 1 << RSTMGR_PERMODRST_EMAC1_LSB);
+#endif
+ }
+}
diff --git a/arch/arm/include/asm/arch-socfpga/reset_manager.h b/arch/arm/include/asm/arch-socfpga/reset_manager.h
index 18506e6..3c5ab40 100644
--- a/arch/arm/include/asm/arch-socfpga/reset_manager.h
+++ b/arch/arm/include/asm/arch-socfpga/reset_manager.h
@@ -10,6 +10,7 @@
void reset_cpu(ulong addr);
void reset_deassert_peripherals_handoff(void);
+void socfpga_emac_reset(int enable);
void socfpga_watchdog_reset(void);
struct socfpga_reset_manager {
@@ -29,6 +30,8 @@ struct socfpga_reset_manager {
#define RSTMGR_CTRL_SWWARMRSTREQ_LSB 1
#endif
+#define RSTMGR_PERMODRST_EMAC0_LSB 0
+#define RSTMGR_PERMODRST_EMAC1_LSB 1
#define RSTMGR_PERMODRST_L4WD0_LSB 6
#endif /* _RESET_MANAGER_H_ */