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authorShawn Guo <shawn.guo@linaro.org>2013-07-08 17:45:20 +0400
committerShawn Guo <shawn.guo@linaro.org>2013-08-16 09:11:22 +0400
commite6a07569611daf4190c0fd2c2bb1e2189c0cb479 (patch)
tree26f52525e498ae233ca0a55a781541ab7aa8d539 /arch/arm/mach-imx/system.c
parent8bba8303b059ddcdcac647efa816b4c04ea42eee (diff)
downloadlinux-e6a07569611daf4190c0fd2c2bb1e2189c0cb479.tar.xz
ARM: imx: let L2 initialization be a common function
Move imx6q L2 initialization function imx6q_init_l2cache() into system.c, and rename it imx_init_l2cache(), so that other platforms other than imx6q can also use the function. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
Diffstat (limited to 'arch/arm/mach-imx/system.c')
-rw-r--r--arch/arm/mach-imx/system.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/system.c b/arch/arm/mach-imx/system.c
index 6fe81bb4d3c9..e5592cab1f6a 100644
--- a/arch/arm/mach-imx/system.c
+++ b/arch/arm/mach-imx/system.c
@@ -27,6 +27,7 @@
#include <asm/system_misc.h>
#include <asm/proc-fns.h>
#include <asm/mach-types.h>
+#include <asm/hardware/cache-l2x0.h>
#include "common.h"
#include "hardware.h"
@@ -95,3 +96,35 @@ void __init mxc_arch_reset_init_dt(void)
clk_prepare(wdog_clk);
}
+
+#ifdef CONFIG_CACHE_L2X0
+static void __init imx_init_l2cache(void)
+{
+ void __iomem *l2x0_base;
+ struct device_node *np;
+ unsigned int val;
+
+ np = of_find_compatible_node(NULL, NULL, "arm,pl310-cache");
+ if (!np)
+ goto out;
+
+ l2x0_base = of_iomap(np, 0);
+ if (!l2x0_base) {
+ of_node_put(np);
+ goto out;
+ }
+
+ /* Configure the L2 PREFETCH and POWER registers */
+ val = readl_relaxed(l2x0_base + L2X0_PREFETCH_CTRL);
+ val |= 0x70800000;
+ writel_relaxed(val, l2x0_base + L2X0_PREFETCH_CTRL);
+ val = L2X0_DYNAMIC_CLK_GATING_EN | L2X0_STNDBY_MODE_EN;
+ writel_relaxed(val, l2x0_base + L2X0_POWER_CTRL);
+
+ iounmap(l2x0_base);
+ of_node_put(np);
+
+out:
+ l2x0_of_init(0, ~0UL);
+}
+#endif