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authorXiubo Li <Li.Xiubo@freescale.com>2014-06-03 10:45:14 +0800
committerWim Van Sebroeck <wim@iguana.be>2014-08-05 22:43:11 +0200
commitf728f4bfc495a588abda4661c09595112677be25 (patch)
tree40d1b38ae81dd8a979d44eef44508883cb8d3bdc /drivers/watchdog
parent2cdf25bb574c20efde0340ffa90f08d1609ef97c (diff)
downloadop-kernel-dev-f728f4bfc495a588abda4661c09595112677be25.zip
op-kernel-dev-f728f4bfc495a588abda4661c09595112677be25.tar.gz
watchdog: imx2_wdt: adds big endianness support.
This watchdog driver will be working on IMX2+, Vybrid, LS1, LS2+ platforms, and will be in different endianness mode in those SoCs: SoCs WDT endian mode ------------------------------------ IMX2+ LE Vybird LE LS1 BE LS2 LE Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/watchdog')
-rw-r--r--drivers/watchdog/imx2_wdt.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/watchdog/imx2_wdt.c b/drivers/watchdog/imx2_wdt.c
index 9d4874f..68c3d37 100644
--- a/drivers/watchdog/imx2_wdt.c
+++ b/drivers/watchdog/imx2_wdt.c
@@ -28,6 +28,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
+#include <linux/of_address.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/timer.h>
@@ -190,10 +191,12 @@ static struct regmap_config imx2_wdt_regmap_config = {
static int __init imx2_wdt_probe(struct platform_device *pdev)
{
+ struct device_node *np = pdev->dev.of_node;
struct imx2_wdt_device *wdev;
struct watchdog_device *wdog;
struct resource *res;
void __iomem *base;
+ bool big_endian;
int ret;
u32 val;
@@ -201,6 +204,10 @@ static int __init imx2_wdt_probe(struct platform_device *pdev)
if (!wdev)
return -ENOMEM;
+ big_endian = of_property_read_bool(np, "big-endian");
+ if (big_endian)
+ imx2_wdt_regmap_config.val_format_endian = REGMAP_ENDIAN_BIG;
+
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(base))
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