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[V6,5/5] ARM: exynos: Enable l2 configuration through device tree

Message ID 1329805190-8874-6-git-send-email-amit.kachhap@linaro.org
State New
Headers show

Commit Message

Amit Daniel Kachhap Feb. 21, 2012, 6:19 a.m. UTC 
This patch enables calling generic l2 setup functions if device tree is used.

Signed-off-by: Amit Daniel Kachhap <amit.kachhap@linaro.org>
---
 arch/arm/mach-exynos/common.c |   13 +++++++++++--
 1 files changed, 11 insertions(+), 2 deletions(-)
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Patch

diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c
index 9ff38aa..cb5ad8c 100644
--- a/arch/arm/mach-exynos/common.c
+++ b/arch/arm/mach-exynos/common.c
@@ -47,6 +47,8 @@ 
 #include <plat/regs-serial.h>
 
 #include "common.h"
+#define L2_AUX_VAL 0x7C470001
+#define L2_AUX_MASK 0xC200ffff
 
 static const char name_exynos4210[] = "EXYNOS4210";
 static const char name_exynos4212[] = "EXYNOS4212";
@@ -443,6 +445,14 @@  core_initcall(exynos4_core_init);
 #ifdef CONFIG_CACHE_L2X0
 static int __init exynos4_l2x0_cache_init(void)
 {
+	int ret;
+	ret = l2x0_of_init(L2_AUX_VAL, L2_AUX_MASK);
+	if (!ret) {
+		l2x0_regs_phys = virt_to_phys(&l2x0_saved_regs);
+		clean_dcache_area(&l2x0_regs_phys, sizeof(unsigned long));
+		return 0;
+	}
+
 	if (!(__raw_readl(S5P_VA_L2CC + L2X0_CTRL) & 0x1)) {
 		l2x0_saved_regs.phy_base = EXYNOS4_PA_L2CC;
 		/* TAG, Data Latency Control: 2 cycles */
@@ -476,8 +486,7 @@  static int __init exynos4_l2x0_cache_init(void)
 		clean_dcache_area(&l2x0_saved_regs, sizeof(struct l2x0_regs));
 	}
 
-	l2x0_init(S5P_VA_L2CC, 0x7C470001, 0xC200ffff);
-
+	l2x0_init(S5P_VA_L2CC, L2_AUX_VAL, L2_AUX_MASK);
 	return 0;
 }