It is needed by imx6 SoC serial, but not for imx23 and imx28.
Signed-off-by: Peter Chen <peter.chen@xxxxxxxxxxxxx>
---
drivers/usb/phy/phy-mxs-usb.c | 15 +++++++++++++++
1 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c
index 472fe36..8cdfbf1 100644
--- a/drivers/usb/phy/phy-mxs-usb.c
+++ b/drivers/usb/phy/phy-mxs-usb.c
@@ -21,6 +21,8 @@
#include <linux/err.h>
#include <linux/io.h>
#include <linux/of_device.h>
+#include <linux/regmap.h>
+#include <linux/mfd/syscon.h>
#define DRIVER_NAME "mxs_phy"
@@ -87,6 +89,7 @@ struct mxs_phy {
struct usb_phy phy;
struct clk *clk;
unsigned int flags;
+ struct regmap *regmap_anatop;
};
static int mxs_phy_hw_init(struct mxs_phy *mxs_phy)
@@ -191,6 +194,7 @@ static int mxs_phy_probe(struct platform_device *pdev)
const struct of_device_id *of_id =
of_match_device(mxs_phy_dt_ids, &pdev->dev);
const struct mxs_phy_platform_flag *platform_flag = of_id->data;
+ struct device_node *np = pdev->dev.of_node;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
base = devm_ioremap_resource(&pdev->dev, res);
@@ -210,6 +214,17 @@ static int mxs_phy_probe(struct platform_device *pdev)
return -ENOMEM;
}
+ /* Some SoCs don't have anatop registers */
+ if (of_get_property(np, "fsl,anatop", NULL)) {
+ mxs_phy->regmap_anatop = syscon_regmap_lookup_by_phandle
+ (np, "fsl,anatop");
+ if (IS_ERR(mxs_phy->regmap_anatop)) {
+ dev_dbg(&pdev->dev,
+ "failed to find regmap for anatop\n");
+ return PTR_ERR(mxs_phy->regmap_anatop);
+ }
+ }
+
mxs_phy->phy.io_priv = base;
mxs_phy->phy.dev = &pdev->dev;
mxs_phy->phy.label = DRIVER_NAME;
--
1.7.1
--
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