diff options
Diffstat (limited to 'drivers/bus')
| -rw-r--r-- | drivers/bus/mvebu-mbus.c | 17 |
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; |