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authorChao Xie <xiechao.mail@gmail.com>2012-07-31 10:13:14 +0400
committerHaojian Zhuang <haojian.zhuang@gmail.com>2012-08-16 12:16:50 +0400
commitc2b7e05c753156dfba3240c59c400d557c5c8746 (patch)
tree9d906c9594730b1d1305c1e2773dac163ea28984 /arch/arm/mm/cache-tauros2.c
parent5cc5815795379690a07d8226fda24ba2fc3f1339 (diff)
downloadlinux-c2b7e05c753156dfba3240c59c400d557c5c8746.tar.xz
ARM: cache: add dt support for tauros2 cache
Signed-off-by: Chao Xie <xiechao.mail@gmail.com> Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Diffstat (limited to 'arch/arm/mm/cache-tauros2.c')
-rw-r--r--arch/arm/mm/cache-tauros2.c35
1 files changed, 34 insertions, 1 deletions
diff --git a/arch/arm/mm/cache-tauros2.c b/arch/arm/mm/cache-tauros2.c
index e9f054fc7e87..1be0f4e5e6eb 100644
--- a/arch/arm/mm/cache-tauros2.c
+++ b/arch/arm/mm/cache-tauros2.c
@@ -15,6 +15,8 @@
*/
#include <linux/init.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
#include <asm/cacheflush.h>
#include <asm/cp15.h>
#include <asm/cputype.h>
@@ -198,7 +200,7 @@ static void enable_extra_feature(unsigned int features)
write_extra_features(u);
}
-void __init tauros2_init(unsigned int features)
+static void __init tauros2_internal_init(unsigned int features)
{
char *mode = NULL;
@@ -294,3 +296,34 @@ void __init tauros2_init(unsigned int features)
printk(KERN_INFO "Tauros2: L2 cache support initialised "
"in %s mode.\n", mode);
}
+
+#ifdef CONFIG_OF
+static const struct of_device_id tauros2_ids[] __initconst = {
+ { .compatible = "marvell,tauros2-cache"},
+ {}
+};
+#endif
+
+void __init tauros2_init(unsigned int features)
+{
+#ifdef CONFIG_OF
+ struct device_node *node;
+ int ret;
+ unsigned int f;
+
+ node = of_find_matching_node(NULL, tauros2_ids);
+ if (!node) {
+ pr_info("Not found marvell,tauros2-cache, disable it\n");
+ return;
+ }
+
+ ret = of_property_read_u32(node, "marvell,tauros2-cache-features", &f);
+ if (ret) {
+ pr_info("Not found marvell,tauros-cache-features property, "
+ "disable extra features\n");
+ features = 0;
+ } else
+ features = f;
+#endif
+ tauros2_internal_init(features);
+}