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| author | Chao Xie <xiechao.mail@gmail.com> | 2012-07-31 10:13:14 +0400 |
|---|---|---|
| committer | Haojian Zhuang <haojian.zhuang@gmail.com> | 2012-08-16 12:16:50 +0400 |
| commit | c2b7e05c753156dfba3240c59c400d557c5c8746 (patch) | |
| tree | 9d906c9594730b1d1305c1e2773dac163ea28984 /arch/arm/mm/cache-tauros2.c | |
| parent | 5cc5815795379690a07d8226fda24ba2fc3f1339 (diff) | |
| download | linux-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.c | 35 |
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); +} |