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bcm53xx: add xHCI support

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Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

SVN-Revision: 46080
This commit is contained in:
Rafał Miłecki 2015-06-21 10:18:43 +00:00
parent 51042bc517
commit b3afbe4918
5 changed files with 553 additions and 1 deletions
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4
package/kernel/linux/modules/usb.mk
View File

@ -1557,7 +1557,9 @@ XHCI_AUTOLOAD := $(patsubst $(LINUX_DIR)/drivers/usb/host/%.ko,%,$(XHCI_FILES))
define KernelPackage/usb3
TITLE:=Support for USB3 controllers
DEPENDS:=+TARGET_omap:kmod-usb-phy-omap-usb3
DEPENDS:= \
+TARGET_bcm53xx:kmod-usb-bcma \
+TARGET_omap:kmod-usb-phy-omap-usb3
KCONFIG:= \
CONFIG_USB_XHCI_HCD \
CONFIG_USB_XHCI_PCI \

78
target/linux/bcm53xx/patches-3.18/810-USB-bcma-make-helper-creating-platform-dev-more-gene.patch Normal file
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@ -0,0 +1,78 @@
From 5b4fed9fc917cc2bfc5297eeab03aeba5d340618 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
Date: Tue, 16 Jun 2015 12:33:46 +0200
Subject: [PATCH] USB: bcma: make helper creating platform dev more generic
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Having "bool ohci" argument bounded us to two cases only and didn't
allow re-using this code for XHCI.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
---
drivers/usb/host/bcma-hcd.c | 24 +++++++++++++-----------
1 file changed, 13 insertions(+), 11 deletions(-)
diff --git a/drivers/usb/host/bcma-hcd.c b/drivers/usb/host/bcma-hcd.c
index 5398e3d..d347282 100644
--- a/drivers/usb/host/bcma-hcd.c
+++ b/drivers/usb/host/bcma-hcd.c
@@ -249,7 +249,10 @@ static const struct usb_ehci_pdata ehci_pdata = {
static const struct usb_ohci_pdata ohci_pdata = {
};
-static struct platform_device *bcma_hcd_create_pdev(struct bcma_device *dev, bool ohci, u32 addr)
+static struct platform_device *bcma_hcd_create_pdev(struct bcma_device *dev,
+ const char *name, u32 addr,
+ const void *data,
+ size_t size)
{
struct platform_device *hci_dev;
struct resource hci_res[2];
@@ -264,8 +267,7 @@ static struct platform_device *bcma_hcd_create_pdev(struct bcma_device *dev, boo
hci_res[1].start = dev->irq;
hci_res[1].flags = IORESOURCE_IRQ;
- hci_dev = platform_device_alloc(ohci ? "ohci-platform" :
- "ehci-platform" , 0);
+ hci_dev = platform_device_alloc(name, 0);
if (!hci_dev)
return ERR_PTR(-ENOMEM);
@@ -276,12 +278,8 @@ static struct platform_device *bcma_hcd_create_pdev(struct bcma_device *dev, boo
ARRAY_SIZE(hci_res));
if (ret)
goto err_alloc;
- if (ohci)
- ret = platform_device_add_data(hci_dev, &ohci_pdata,
- sizeof(ohci_pdata));
- else
- ret = platform_device_add_data(hci_dev, &ehci_pdata,
- sizeof(ehci_pdata));
+ if (data)
+ ret = platform_device_add_data(hci_dev, data, size);
if (ret)
goto err_alloc;
ret = platform_device_add(hci_dev);
@@ -334,11 +332,15 @@ static int bcma_hcd_probe(struct bcma_device *dev)
&& chipinfo->rev == 0)
ohci_addr = 0x18009000;
- usb_dev->ohci_dev = bcma_hcd_create_pdev(dev, true, ohci_addr);
+ usb_dev->ohci_dev = bcma_hcd_create_pdev(dev, "ohci-platform",
+ ohci_addr, &ohci_pdata,
+ sizeof(ohci_pdata));
if (IS_ERR(usb_dev->ohci_dev))
return PTR_ERR(usb_dev->ohci_dev);
- usb_dev->ehci_dev = bcma_hcd_create_pdev(dev, false, dev->addr);
+ usb_dev->ehci_dev = bcma_hcd_create_pdev(dev, "ehci-platform",
+ dev->addr, &ehci_pdata,
+ sizeof(ehci_pdata));
if (IS_ERR(usb_dev->ehci_dev)) {
err = PTR_ERR(usb_dev->ehci_dev);
goto err_unregister_ohci_dev;
--
1.8.4.5

107
target/linux/bcm53xx/patches-3.18/811-USB-bcma-use-separated-function-for-USB-2.0-initiali.patch Normal file
View File

@ -0,0 +1,107 @@
From 4aed231f49954114d5ae23e97789e9aa540a0b70 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
Date: Tue, 16 Jun 2015 12:52:07 +0200
Subject: [PATCH] USB: bcma: use separated function for USB 2.0 initialization
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This will allow adding USB 3.0 (XHCI) support cleanly.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
---
drivers/usb/host/bcma-hcd.c | 51 +++++++++++++++++++++++++++++++--------------
1 file changed, 35 insertions(+), 16 deletions(-)
diff --git a/drivers/usb/host/bcma-hcd.c b/drivers/usb/host/bcma-hcd.c
index d347282..0b4d0e8 100644
--- a/drivers/usb/host/bcma-hcd.c
+++ b/drivers/usb/host/bcma-hcd.c
@@ -34,6 +34,7 @@ MODULE_DESCRIPTION("Common USB driver for BCMA Bus");
MODULE_LICENSE("GPL");
struct bcma_hcd_device {
+ struct bcma_device *core;
struct platform_device *ehci_dev;
struct platform_device *ohci_dev;
};
@@ -293,27 +294,16 @@ err_alloc:
return ERR_PTR(ret);
}
-static int bcma_hcd_probe(struct bcma_device *dev)
+static int bcma_hcd_usb20_init(struct bcma_hcd_device *usb_dev)
{
- int err;
+ struct bcma_device *dev = usb_dev->core;
+ struct bcma_chipinfo *chipinfo = &dev->bus->chipinfo;
u32 ohci_addr;
- struct bcma_hcd_device *usb_dev;
- struct bcma_chipinfo *chipinfo;
-
- chipinfo = &dev->bus->chipinfo;
-
- /* TODO: Probably need checks here; is the core connected? */
+ int err;
if (dma_set_mask_and_coherent(dev->dma_dev, DMA_BIT_MASK(32)))
return -EOPNOTSUPP;
- usb_dev = devm_kzalloc(&dev->dev, sizeof(struct bcma_hcd_device),
- GFP_KERNEL);
- if (!usb_dev)
- return -ENOMEM;
-
- bcma_hci_platform_power_gpio(dev, true);
-
switch (dev->id.id) {
case BCMA_CORE_NS_USB20:
bcma_hcd_init_chip_arm(dev);
@@ -346,7 +336,6 @@ static int bcma_hcd_probe(struct bcma_device *dev)
goto err_unregister_ohci_dev;
}
- bcma_set_drvdata(dev, usb_dev);
return 0;
err_unregister_ohci_dev:
@@ -354,6 +343,36 @@ err_unregister_ohci_dev:
return err;
}
+static int bcma_hcd_probe(struct bcma_device *dev)
+{
+ int err;
+ struct bcma_hcd_device *usb_dev;
+
+ /* TODO: Probably need checks here; is the core connected? */
+
+ usb_dev = devm_kzalloc(&dev->dev, sizeof(struct bcma_hcd_device),
+ GFP_KERNEL);
+ if (!usb_dev)
+ return -ENOMEM;
+ usb_dev->core = dev;
+
+ bcma_hci_platform_power_gpio(dev, true);
+
+ switch (dev->id.id) {
+ case BCMA_CORE_USB20_HOST:
+ case BCMA_CORE_NS_USB20:
+ err = bcma_hcd_usb20_init(usb_dev);
+ if (err)
+ return err;
+ break;
+ default:
+ return -ENODEV;
+ }
+
+ bcma_set_drvdata(dev, usb_dev);
+ return 0;
+}
+
static void bcma_hcd_remove(struct bcma_device *dev)
{
struct bcma_hcd_device *usb_dev = bcma_get_drvdata(dev);
--
1.8.4.5

266
target/linux/bcm53xx/patches-3.18/812-USB-bcma-add-USB-3.0-support.patch Normal file
View File

@ -0,0 +1,266 @@
From 78008c94c253963454a9f6d3d2e0324acef3f20a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
Date: Tue, 16 Jun 2015 17:14:26 +0200
Subject: [PATCH] USB: bcma: add USB 3.0 support
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
---
drivers/usb/host/bcma-hcd.c | 218 ++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 218 insertions(+)
diff --git a/drivers/usb/host/bcma-hcd.c b/drivers/usb/host/bcma-hcd.c
index 0b4d0e8..71fa06d 100644
--- a/drivers/usb/host/bcma-hcd.c
+++ b/drivers/usb/host/bcma-hcd.c
@@ -37,6 +37,7 @@ struct bcma_hcd_device {
struct bcma_device *core;
struct platform_device *ehci_dev;
struct platform_device *ohci_dev;
+ struct platform_device *xhci_dev;
};
/* Wait for bitmask in a register to get set or cleared.
@@ -343,6 +344,217 @@ err_unregister_ohci_dev:
return err;
}
+static bool bcma_wait_reg(struct bcma_bus *bus, void __iomem *addr, u32 mask,
+ u32 value, int timeout)
+{
+ unsigned long deadline = jiffies + timeout;
+ u32 val;
+
+ do {
+ val = readl(addr);
+ if ((val & mask) == value)
+ return true;
+ cpu_relax();
+ udelay(10);
+ } while (!time_after_eq(jiffies, deadline));
+
+ pr_err("Timeout waiting for register %p\n", addr);
+
+ return false;
+}
+
+static void bcma_hcd_usb30_phy_init(struct bcma_hcd_device *bcma_hcd)
+{
+ struct bcma_device *core = bcma_hcd->core;
+ struct bcma_bus *bus = core->bus;
+ struct bcma_chipinfo *chipinfo = &bus->chipinfo;
+ struct bcma_drv_cc_b *ccb = &bus->drv_cc_b;
+ struct bcma_device *arm_core;
+ void __iomem *dmu = NULL;
+ u32 cru_straps_ctrl;
+
+ if (chipinfo->id != BCMA_CHIP_ID_BCM4707 &&
+ chipinfo->id != BCMA_CHIP_ID_BCM53018)
+ return;
+
+ arm_core = bcma_find_core(bus, BCMA_CORE_ARMCA9);
+ if (!arm_core)
+ return;
+
+ dmu = ioremap_nocache(arm_core->addr_s[0], 0x1000);
+ if (!dmu)
+ goto out;
+
+ /* Check strapping of PCIE/USB3 SEL */
+ cru_straps_ctrl = ioread32(dmu + 0x2a0);
+ if ((cru_straps_ctrl & 0x10) == 0)
+ goto out;
+
+ /* Perform USB3 system soft reset */
+ bcma_awrite32(core, BCMA_RESET_CTL, BCMA_RESET_CTL_RESET);
+
+ /* Enable MDIO. Setting MDCDIV as 26 */
+ iowrite32(0x0000009a, ccb->mii + 0x000);
+ udelay(2);
+
+ switch (chipinfo->id) {
+ case BCMA_CHIP_ID_BCM4707:
+ if (chipinfo->rev == 4) {
+ /* For NS-B0, USB3 PLL Block */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x587e8000, ccb->mii + 0x004);
+
+ /* Clear ana_pllSeqStart */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x58061000, ccb->mii + 0x004);
+
+ /* CMOS Divider ratio to 25 */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x582a6400, ccb->mii + 0x004);
+
+ /* Asserting PLL Reset */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x582ec000, ccb->mii + 0x004);
+
+ /* Deaaserting PLL Reset */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x582e8000, ccb->mii + 0x004);
+
+ /* Deasserting USB3 system reset */
+ bcma_awrite32(core, BCMA_RESET_CTL, 0);
+
+ /* Set ana_pllSeqStart */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x58069000, ccb->mii + 0x004);
+
+ /* RXPMD block */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x587e8020, ccb->mii + 0x004);
+
+ /* CDR int loop locking BW to 1 */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x58120049, ccb->mii + 0x004);
+
+ /* CDR int loop acquisition BW to 1 */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x580e0049, ccb->mii + 0x004);
+
+ /* CDR prop loop BW to 1 */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x580a005c, ccb->mii + 0x004);
+
+ /* Waiting MII Mgt interface idle */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ } else {
+ /* PLL30 block */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x587e8000, ccb->mii + 0x004);
+
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x582a6400, ccb->mii + 0x004);
+
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x587e80e0, ccb->mii + 0x004);
+
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x580a009c, ccb->mii + 0x004);
+
+ /* Enable SSC */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x587e8040, ccb->mii + 0x004);
+
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x580a21d3, ccb->mii + 0x004);
+
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x58061003, ccb->mii + 0x004);
+
+ /* Waiting MII Mgt interface idle */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+
+ /* Deasserting USB3 system reset */
+ bcma_awrite32(core, BCMA_RESET_CTL, 0);
+ }
+ break;
+ case BCMA_CHIP_ID_BCM53018:
+ /* USB3 PLL Block */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x587e8000, ccb->mii + 0x004);
+
+ /* Assert Ana_Pllseq start */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x58061000, ccb->mii + 0x004);
+
+ /* Assert CML Divider ratio to 26 */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x582a6400, ccb->mii + 0x004);
+
+ /* Asserting PLL Reset */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x582ec000, ccb->mii + 0x004);
+
+ /* Deaaserting PLL Reset */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x582e8000, ccb->mii + 0x004);
+
+ /* Waiting MII Mgt interface idle */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+
+ /* Deasserting USB3 system reset */
+ bcma_awrite32(core, BCMA_RESET_CTL, 0);
+
+ /* PLL frequency monitor enable */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x58069000, ccb->mii + 0x004);
+
+ /* PIPE Block */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x587e8060, ccb->mii + 0x004);
+
+ /* CMPMAX & CMPMINTH setting */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x580af30d, ccb->mii + 0x004);
+
+ /* DEGLITCH MIN & MAX setting */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x580e6302, ccb->mii + 0x004);
+
+ /* TXPMD block */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x587e8040, ccb->mii + 0x004);
+
+ /* Enabling SSC */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+ iowrite32(0x58061003, ccb->mii + 0x004);
+
+ /* Waiting MII Mgt interface idle */
+ bcma_wait_reg(bus, ccb->mii + 0x000, 0x0100, 0x0000, 1000);
+
+ break;
+ }
+
+ pr_info("[%s:%d] DONE\n", __FUNCTION__, __LINE__);
+out:
+ if (dmu)
+ iounmap(dmu);
+}
+
+static int bcma_hcd_usb30_init(struct bcma_hcd_device *bcma_hcd)
+{
+ struct bcma_device *core = bcma_hcd->core;
+
+ bcma_core_enable(core, 0);
+
+ bcma_hcd_usb30_phy_init(bcma_hcd);
+
+ bcma_hcd->xhci_dev = bcma_hcd_create_pdev(core, "xhci-hcd", core->addr,
+ NULL, 0);
+ if (IS_ERR(bcma_hcd->ohci_dev))
+ return PTR_ERR(bcma_hcd->ohci_dev);
+
+ return 0;
+}
+
static int bcma_hcd_probe(struct bcma_device *dev)
{
int err;
@@ -365,6 +577,11 @@ static int bcma_hcd_probe(struct bcma_device *dev)
if (err)
return err;
break;
+ case BCMA_CORE_NS_USB30:
+ err = bcma_hcd_usb30_init(usb_dev);
+ if (err)
+ return err;
+ break;
default:
return -ENODEV;
}
@@ -419,6 +636,7 @@ static int bcma_hcd_resume(struct bcma_device *dev)
static const struct bcma_device_id bcma_hcd_table[] = {
BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_USB20_HOST, BCMA_ANY_REV, BCMA_ANY_CLASS),
BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_NS_USB20, BCMA_ANY_REV, BCMA_ANY_CLASS),
+ BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_NS_USB30, BCMA_ANY_REV, BCMA_ANY_CLASS),
BCMA_CORETABLE_END
};
MODULE_DEVICE_TABLE(bcma, bcma_hcd_table);
--
1.8.4.5

99
target/linux/bcm53xx/patches-3.18/820-xhci-add-Broadcom-specific-fake-doorbell.patch Normal file
View File

@ -0,0 +1,99 @@
From 9cc14ca0aae53c16d10ffea49848ac61a5015562 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
Date: Sun, 21 Jun 2015 11:10:49 +0200
Subject: [PATCH] xhci: add Broadcom specific fake doorbell
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This fixes problem with controller seeing devices only in some small
percentage of cold boots.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
---
drivers/usb/host/xhci.c | 62 +++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 62 insertions(+)
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 3bceabe..0737ab2 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -122,6 +122,64 @@ int xhci_halt(struct xhci_hcd *xhci)
return ret;
}
+#ifdef CONFIG_ARCH_BCM_5301X
+int xhci_fake_doorbell(struct xhci_hcd *xhci, int slot_id)
+{
+ unsigned int temp1, ret;
+
+ /* alloc a virt device for slot */
+ if (!xhci_alloc_virt_device(xhci, slot_id, 0, GFP_NOIO)) {
+ xhci_warn(xhci, "Could not allocate xHCI USB device data structures\n");
+ return 1;
+ }
+
+ /* ring fake doorbell for slot_id ep 0 */
+ xhci_ring_ep_doorbell(xhci, slot_id, 0, 0);
+ mdelay(1);
+
+ /* read the status register to check if HSE is set or not? */
+ temp1 = readl(&xhci->op_regs->status);
+ xhci_dbg(xhci, "op reg status = %x\n",temp1);
+
+ /* clear HSE if set */
+ if(temp1 & STS_FATAL) {
+ xhci_dbg(xhci, "HSE problem detected\n");
+ temp1 &= ~(0x1fff);
+ temp1 |= STS_FATAL;
+ xhci_dbg(xhci, "temp1=%x\n",temp1);
+ writel(temp1, &xhci->op_regs->status);
+ mdelay(1);
+ temp1 = readl(&xhci->op_regs->status);
+ xhci_dbg(xhci, "After clear op reg status=%x\n", temp1);
+ }
+
+ /* Free virt device */
+ xhci_free_virt_device(xhci, slot_id);
+
+ /* Run the controller if needed */
+ temp1 = readl(&xhci->op_regs->command);
+ if (temp1 & CMD_RUN)
+ return 0;
+ temp1 |= (CMD_RUN);
+
+ writel(temp1, &xhci->op_regs->command);
+ /*
+ * Wait for the HCHalted Status bit to be 0 to indicate the host is running.
+ */
+ ret = xhci_handshake(xhci, &xhci->op_regs->status,
+ STS_HALT, 0, XHCI_MAX_HALT_USEC);
+
+ if (ret == -ETIMEDOUT) {
+ xhci_err(xhci, "Host took too long to start, "
+ "waited %u microseconds.\n",
+ XHCI_MAX_HALT_USEC);
+ return 1;
+ }
+
+ return 0;
+}
+#endif /* CONFIG_ARCH_BCM_5301X */
+
/*
* Set the run bit and wait for the host to be running.
*/
@@ -146,6 +204,10 @@ static int xhci_start(struct xhci_hcd *xhci)
xhci_err(xhci, "Host took too long to start, "
"waited %u microseconds.\n",
XHCI_MAX_HALT_USEC);
+#ifdef CONFIG_ARCH_BCM_5301X
+ xhci_fake_doorbell(xhci, 1);
+#endif /* CONFIG_ARCH_BCM_5301X */
+
if (!ret)
xhci->xhc_state &= ~XHCI_STATE_HALTED;
return ret;
--
1.8.4.5