This binding allow to disable the internal 60Mhz clock for USB host2 and
host3.
Signed-off-by: Fabien Lahoudere <fabien.lahoudere@xxxxxxxxxxxxxxx>
---
drivers/usb/chipidea/ci_hdrc_imx.c | 2 ++
drivers/usb/chipidea/ci_hdrc_imx.h | 1 +
drivers/usb/chipidea/usbmisc_imx.c | 17 +++++++++++++++++
3 files changed, 20 insertions(+)
diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c
index 96c0e33..89a9d98 100644
--- a/drivers/usb/chipidea/ci_hdrc_imx.c
+++ b/drivers/usb/chipidea/ci_hdrc_imx.c
@@ -147,6 +147,8 @@ static struct imx_usbmisc_data *usbmisc_get_init_data(struct device *dev)
if (of_find_property(np, "external-vbus-divider", NULL))
data->evdo = 1;
+ if (of_find_property(np, "disable-int60ck", NULL))
+ data->disable_int60ck = 1;
if (of_usb_get_phy_mode(np) == USBPHY_INTERFACE_MODE_ULPI)
data->ulpi = 1;
diff --git a/drivers/usb/chipidea/ci_hdrc_imx.h b/drivers/usb/chipidea/ci_hdrc_imx.h
index d666c9f..43bafae 100644
--- a/drivers/usb/chipidea/ci_hdrc_imx.h
+++ b/drivers/usb/chipidea/ci_hdrc_imx.h
@@ -20,6 +20,7 @@ struct imx_usbmisc_data {
unsigned int oc_polarity:1; /* over current polarity if oc enabled */
unsigned int evdo:1; /* set external vbus divider option */
unsigned int ulpi:1; /* connected to an ULPI phy */
+ unsigned int disable_int60ck:1; /* disable 60 MHZ clock */
};
int imx_usbmisc_init(struct imx_usbmisc_data *);
diff --git a/drivers/usb/chipidea/usbmisc_imx.c b/drivers/usb/chipidea/usbmisc_imx.c
index 5472900..bffc667 100644
--- a/drivers/usb/chipidea/usbmisc_imx.c
+++ b/drivers/usb/chipidea/usbmisc_imx.c
@@ -53,6 +53,9 @@
#define MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_ULPI BIT(6)
#define MX53_USB_UH2_CTRL_OFFSET 0x14
#define MX53_USB_UH3_CTRL_OFFSET 0x18
+#define MX53_USB_CLKONOFF_CTRL_OFFSET 0x24
+#define MX53_USB_CLKONOFF_CTRL_H2_INT60CKOFF BIT(21)
+#define MX53_USB_CLKONOFF_CTRL_H3_INT60CKOFF BIT(22)
#define MX53_BM_OVER_CUR_DIS_H1 BIT(5)
#define MX53_BM_OVER_CUR_DIS_OTG BIT(8)
#define MX53_BM_OVER_CUR_DIS_UHx BIT(30)
@@ -242,6 +245,13 @@ static int usbmisc_imx53_init(struct imx_usbmisc_data *data)
| MX53_USB_UHx_CTRL_ULPI_INT_EN;
writel(val, reg);
}
+ if (data->disable_int60ck) {
+ reg = usbmisc->base +
+ MX53_USB_CLKONOFF_CTRL_OFFSET;
+ val = readl(reg)
+ | MX53_USB_CLKONOFF_CTRL_H2_INT60CKOFF;
+ writel(val, reg);
+ }
if (data->disable_oc) {
reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET;
val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
@@ -264,6 +274,13 @@ static int usbmisc_imx53_init(struct imx_usbmisc_data *data)
| MX53_USB_UHx_CTRL_ULPI_INT_EN;
writel(val, reg);
}
+ if (data->disable_int60ck) {
+ reg = usbmisc->base +
+ MX53_USB_CLKONOFF_CTRL_OFFSET;
+ val = readl(reg)
+ | MX53_USB_CLKONOFF_CTRL_H3_INT60CKOFF;
+ writel(val, reg);
+ }
if (data->disable_oc) {
reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET;
val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
--
2.1.4
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