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-rw-r--r--drivers/bus/mvebu-mbus.c17
1 files changed, 14 insertions, 3 deletions
diff --git a/drivers/bus/mvebu-mbus.c b/drivers/bus/mvebu-mbus.c
index 81bf297f1034..061b5cf1d451 100644
--- a/drivers/bus/mvebu-mbus.c
+++ b/drivers/bus/mvebu-mbus.c
@@ -69,6 +69,7 @@
*/
#define WIN_CTRL_OFF 0x0000
#define WIN_CTRL_ENABLE BIT(0)
+#define WIN_CTRL_SYNCBARRIER BIT(1)
#define WIN_CTRL_TGT_MASK 0xf0
#define WIN_CTRL_TGT_SHIFT 4
#define WIN_CTRL_ATTR_MASK 0xff00
@@ -82,6 +83,9 @@
#define WIN_REMAP_LOW 0xffff0000
#define WIN_REMAP_HI_OFF 0x000c
+#define UNIT_SYNC_BARRIER_OFF 0x84
+#define UNIT_SYNC_BARRIER_ALL 0xFFFF
+
#define ATTR_HW_COHERENCY (0x1 << 4)
#define DDR_BASE_CS_OFF(n) (0x0000 + ((n) << 3))
@@ -316,6 +320,7 @@ static int mvebu_mbus_setup_window(struct mvebu_mbus_state *mbus,
ctrl = ((size - 1) & WIN_CTRL_SIZE_MASK) |
(attr << WIN_CTRL_ATTR_SHIFT) |
(target << WIN_CTRL_TGT_SHIFT) |
+ WIN_CTRL_SYNCBARRIER |
WIN_CTRL_ENABLE;
writel(base & WIN_BASE_LOW, addr + WIN_BASE_OFF);
@@ -857,7 +862,8 @@ static int __init mvebu_mbus_common_init(struct mvebu_mbus_state *mbus,
phys_addr_t sdramwins_phys_base,
size_t sdramwins_size,
phys_addr_t mbusbridge_phys_base,
- size_t mbusbridge_size)
+ size_t mbusbridge_size,
+ bool is_coherent)
{
int win;
@@ -889,6 +895,10 @@ static int __init mvebu_mbus_common_init(struct mvebu_mbus_state *mbus,
mbus->soc->setup_cpu_target(mbus);
+ if (is_coherent)
+ writel(UNIT_SYNC_BARRIER_ALL,
+ mbus->mbuswins_base + UNIT_SYNC_BARRIER_OFF);
+
register_syscore_ops(&mvebu_mbus_syscore_ops);
return 0;
@@ -916,7 +926,7 @@ int __init mvebu_mbus_init(const char *soc, phys_addr_t mbuswins_phys_base,
mbuswins_phys_base,
mbuswins_size,
sdramwins_phys_base,
- sdramwins_size, 0, 0);
+ sdramwins_size, 0, 0, false);
}
#ifdef CONFIG_OF
@@ -1118,7 +1128,8 @@ int __init mvebu_mbus_dt_init(bool is_coherent)
sdramwins_res.start,
resource_size(&sdramwins_res),
mbusbridge_res.start,
- resource_size(&mbusbridge_res));
+ resource_size(&mbusbridge_res),
+ is_coherent);
if (ret)
return ret;