Merge "usb: msm_otg: Allow support to use 2nd HSPHY with USB2 Core"
diff --git a/Documentation/devicetree/bindings/usb/msm-hsusb.txt b/Documentation/devicetree/bindings/usb/msm-hsusb.txt
index efd33e7..6d06e99 100644
--- a/Documentation/devicetree/bindings/usb/msm-hsusb.txt
+++ b/Documentation/devicetree/bindings/usb/msm-hsusb.txt
@@ -69,6 +69,8 @@
- qcom,dp-manual-pullup: If present, vbus is not routed to USB controller/phy
and controller driver therefore enables pull-up explicitly before
starting controller using usbcmd run/stop bit.
+- qcom,usb2-enable-hsphy2: If present then USB2 controller is connected to 2nd
+ HSPHY.
Example HSUSB OTG controller device node :
usb@f9690000 {
diff --git a/drivers/usb/gadget/ci13xxx_msm.c b/drivers/usb/gadget/ci13xxx_msm.c
index 569f200..3cad3ce 100644
--- a/drivers/usb/gadget/ci13xxx_msm.c
+++ b/drivers/usb/gadget/ci13xxx_msm.c
@@ -98,6 +98,32 @@
}
}
+static void ci13xxx_msm_reset(void)
+{
+ struct ci13xxx *udc = _udc;
+ struct usb_phy *phy = udc->transceiver;
+ struct device *dev = udc->gadget.dev.parent;
+
+ writel_relaxed(0, USB_AHBBURST);
+ writel_relaxed(0x08, USB_AHBMODE);
+
+ if (phy && (phy->flags & ENABLE_SECONDARY_PHY)) {
+ int temp;
+
+ dev_dbg(dev, "using secondary hsphy\n");
+ temp = readl_relaxed(USB_PHY_CTRL2);
+ temp |= (1<<16);
+ writel_relaxed(temp, USB_PHY_CTRL2);
+
+ /*
+ * Add memory barrier to make sure above LINK writes are
+ * complete before moving ahead with USB peripheral mode
+ * enumeration.
+ */
+ mb();
+ }
+}
+
static void ci13xxx_msm_notify_event(struct ci13xxx *udc, unsigned event)
{
struct device *dev = udc->gadget.dev.parent;
@@ -105,8 +131,7 @@
switch (event) {
case CI13XXX_CONTROLLER_RESET_EVENT:
dev_info(dev, "CI13XXX_CONTROLLER_RESET_EVENT received\n");
- writel(0, USB_AHBBURST);
- writel_relaxed(0x08, USB_AHBMODE);
+ ci13xxx_msm_reset();
break;
case CI13XXX_CONTROLLER_DISCONNECT_EVENT:
dev_info(dev, "CI13XXX_CONTROLLER_DISCONNECT_EVENT received\n");
diff --git a/drivers/usb/otg/msm_otg.c b/drivers/usb/otg/msm_otg.c
index bc6580b..4865b03 100644
--- a/drivers/usb/otg/msm_otg.c
+++ b/drivers/usb/otg/msm_otg.c
@@ -478,6 +478,7 @@
u32 val;
int ret;
int retries;
+ struct msm_otg_platform_data *pdata = motg->pdata;
ret = msm_otg_link_clk_reset(motg, 1);
if (ret)
@@ -496,6 +497,9 @@
if (ret)
return ret;
+ if (pdata && pdata->enable_sec_phy)
+ writel_relaxed(readl_relaxed(USB_PHY_CTRL2) | (1<<16),
+ USB_PHY_CTRL2);
val = readl(USB_PORTSC) & ~PORTSC_PTS_MASK;
writel(val | PORTSC_PTS_ULPI, USB_PORTSC);
@@ -535,6 +539,7 @@
static int msm_otg_link_reset(struct msm_otg *motg)
{
int cnt = 0;
+ struct msm_otg_platform_data *pdata = motg->pdata;
writel_relaxed(USBCMD_RESET, USB_USBCMD);
while (cnt < LINK_RESET_TIMEOUT_USEC) {
@@ -551,6 +556,9 @@
writel_relaxed(0x0, USB_AHBBURST);
writel_relaxed(0x08, USB_AHBMODE);
+ if (pdata && pdata->enable_sec_phy)
+ writel_relaxed(readl_relaxed(USB_PHY_CTRL2) | (1<<16),
+ USB_PHY_CTRL2);
return 0;
}
@@ -3796,6 +3804,8 @@
"qcom,hsusb-otg-delay-lpm");
pdata->dp_manual_pullup = of_property_read_bool(node,
"qcom,dp-manual-pullup");
+ pdata->enable_sec_phy = of_property_read_bool(node,
+ "qcom,usb2-enable-hsphy2");
pdata->pmic_id_irq = platform_get_irq_byname(pdev, "pmic_id_irq");
if (pdata->pmic_id_irq < 0)
@@ -4095,6 +4105,9 @@
if (pdata->dp_manual_pullup)
phy->flags |= ENABLE_DP_MANUAL_PULLUP;
+ if (pdata->enable_sec_phy)
+ phy->flags |= ENABLE_SECONDARY_PHY;
+
ret = usb_set_transceiver(&motg->phy);
if (ret) {
dev_err(&pdev->dev, "usb_set_transceiver failed\n");
diff --git a/include/linux/usb/msm_hsusb.h b/include/linux/usb/msm_hsusb.h
index c8a20da..5e73bd9 100644
--- a/include/linux/usb/msm_hsusb.h
+++ b/include/linux/usb/msm_hsusb.h
@@ -201,6 +201,7 @@
* USB enters LPM.
* @delay_lpm_on_disconnect: Use a delay before entering LPM
* upon USB cable disconnection.
+ * @enable_sec_phy: Use second HSPHY with USB2 core
* @bus_scale_table: parameters for bus bandwidth requirements
* @mhl_dev_name: MHL device name used to register with MHL driver.
*/
@@ -222,12 +223,14 @@
bool core_clk_always_on_workaround;
bool delay_lpm_on_disconnect;
bool dp_manual_pullup;
+ bool enable_sec_phy;
struct msm_bus_scale_pdata *bus_scale_table;
const char *mhl_dev_name;
};
/* phy related flags */
#define ENABLE_DP_MANUAL_PULLUP BIT(0)
+#define ENABLE_SECONDARY_PHY BIT(1)
/* Timeout (in msec) values (min - max) associated with OTG timers */