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watchdog: imx2_wdt: adds big endianness support.

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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 <[email protected]>
Reviewed-by: Guenter Roeck <[email protected]>
Signed-off-by: Wim Van Sebroeck <[email protected]>
This commit is contained in:
Xiubo Li 2014-06-03 10:45:14 +08:00 • committed by Wim Van Sebroeck
commit f728f4bfc4
2 changed files with 12 additions and 0 deletions
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7
drivers/watchdog/imx2_wdt.c
View file

@ -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))