ARM: l2c: check that DT files specify the required "cache-unified" property
This is a required property, and should always be specified.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c
index c5c8a41..790343b 100644
--- a/arch/arm/mm/cache-l2x0.c
+++ b/arch/arm/mm/cache-l2x0.c
@@ -1364,6 +1364,10 @@
data = of_match_node(l2x0_ids, np)->data;
+ /* All L2 caches are unified, so this property should be specified */
+ if (!of_property_read_bool(np, "cache-unified"))
+ pr_err("L2C: device tree omits to specify unified cache\n");
+
/* L2 configuration can only be changed if the cache is disabled */
if (!(readl_relaxed(l2x0_base + L2X0_CTRL) & L2X0_CTRL_EN))
if (data->of_parse)