[PATCH] drivers: cache: ncore: Disable snoop filter

[dinesh.maniyam at intel.com]

From: Dinesh Maniyam <dinesh.maniyam at 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.maniyam at 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