From: Dinesh Maniyam <dinesh.mani...@intel.com>
There is hardware bug in NCORE CCU IP and it is causing an issue in the
coherent directory tracking of outstanding cache lines.
The workaround is disabling snoop filter.
Signed-off-by: Dinesh Maniyam <dinesh.mani...@intel.com>
---
drivers/cache/cache-ncore.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/cache/cache-ncore.c b/drivers/cache/cache-ncore.c
index 3beff780de..117d2b91ab 100644
--- a/drivers/cache/cache-ncore.c
+++ b/drivers/cache/cache-ncore.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0
/*
- * Copyright (C) 2019 Intel Corporation <www.intel.com>
+ * Copyright (C) 2019-2022 Intel Corporation <www.intel.com>
*
*/
#include <dm.h>
@@ -81,8 +81,8 @@ static void ncore_ccu_init_dirs(void __iomem *base)
hang();
}
- /* Enable snoop filter, a bit per snoop filter */
- setbits_le32((ulong)CCU_DIR_REG_ADDR(base, DIRUSFER, i),
+ /* Disable snoop filter, a bit per snoop filter */
+ clrbits_le32((ulong)CCU_DIR_REG_ADDR(base, DIRUSFER, i),
BIT(f));
}
}
--
2.25.1
