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authorShawn Guo <shawn.guo@linaro.org>2013-03-29 09:59:28 +0800
committerShawn Guo <shawn.guo@linaro.org>2013-04-01 20:42:16 +0800
commit69d75a02db28c8bb04a4a70b1a577d571fc8e800 (patch)
tree2e721b28b48bae1ebad9026efb01e11cfa8500ad /arch/arm/mach-mxs
parent974a9af5320028bad0c4c17a67353edc4e5a1997 (diff)
downloadlinux-linaro-stable-69d75a02db28c8bb04a4a70b1a577d571fc8e800.tar.gz
ARM: mxs: get ocotp base address from device tree
Instead of using the static definitions, get ocotp base address from device tree with mapping. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Diffstat (limited to 'arch/arm/mach-mxs')
-rw-r--r--arch/arm/mach-mxs/ocotp.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/arm/mach-mxs/ocotp.c b/arch/arm/mach-mxs/ocotp.c
index 1dff46703753..c2002eb2655e 100644
--- a/arch/arm/mach-mxs/ocotp.c
+++ b/arch/arm/mach-mxs/ocotp.c
@@ -15,6 +15,8 @@
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/mutex.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
#include <asm/processor.h> /* for cpu_relax() */
@@ -33,7 +35,8 @@ static u32 ocotp_words[OCOTP_WORD_COUNT];
const u32 *mxs_get_ocotp(void)
{
- void __iomem *ocotp_base = MXS_IO_ADDRESS(MXS_OCOTP_BASE_ADDR);
+ struct device_node *np;
+ void __iomem *ocotp_base;
int timeout = 0x400;
size_t i;
static int once = 0;
@@ -41,6 +44,10 @@ const u32 *mxs_get_ocotp(void)
if (once)
return ocotp_words;
+ np = of_find_compatible_node(NULL, NULL, "fsl,ocotp");
+ ocotp_base = of_iomap(np, 0);
+ WARN_ON(!ocotp_base);
+
mutex_lock(&ocotp_mutex);
/*