From: Vyacheslav Yurkov <Vyacheslav.Yurkov@xxxxxxxxxx>
When DDR firewall configuration is updated the F2SDRAM bridges need to
be brought from reset.
Signed-off-by: Vyacheslav Yurkov <Vyacheslav.Yurkov@xxxxxxxxxx>
---
arch/arm/mach-socfpga/arria10-sdram.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/arch/arm/mach-socfpga/arria10-sdram.c b/arch/arm/mach-socfpga/arria10-sdram.c
index b7eade0b17..a6eb63299a 100644
--- a/arch/arm/mach-socfpga/arria10-sdram.c
+++ b/arch/arm/mach-socfpga/arria10-sdram.c
@@ -468,6 +468,18 @@ static void arria10_sdram_mmr_init(void)
}
}
+static void arria10_f2sdram_bridges_reset(void)
+{
+ uint32_t val;
+
+ /* Release F2SDRAM bridges from reset */
+ val = readl(ARRIA10_RSTMGR_ADDR + ARRIA10_RSTMGR_BRGMODRST);
+ val &= ~(ARRIA10_RSTMGR_BRGMODRST_F2SSDRAM0 |
+ ARRIA10_RSTMGR_BRGMODRST_F2SSDRAM1 |
+ ARRIA10_RSTMGR_BRGMODRST_F2SSDRAM2);
+ writel(val, ARRIA10_RSTMGR_ADDR + ARRIA10_RSTMGR_BRGMODRST);
+}
+
static int arria10_sdram_firewall_setup(void)
{
uint32_t mpu_en = 0;
@@ -512,6 +524,8 @@ static int arria10_sdram_firewall_setup(void)
writel(0xffff0000, ARRIA10_NOC_FW_DDR_L3_HPSREGION0ADDR);
writel(ARRIA10_NOC_FW_DDR_L3_HPSREG0EN, ARRIA10_NOC_FW_DDR_L3_EN);
+ arria10_f2sdram_bridges_reset();
+
return 0;
}
--
2.25.1
