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ar71xx: add USB workarounds for AR934x/QCA955x SoCs

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Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

SVN-Revision: 36787
This commit is contained in:
Gabor Juhos 2013-05-30 16:23:06 +00:00
parent 6ff976a87a
commit f02765086d
2 changed files with 187 additions and 0 deletions
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101
target/linux/ar71xx/patches-3.8/490-usb-ehci-add-quirks-for-qca-socs.patch Normal file
View file

@ -0,0 +1,101 @@
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -249,6 +249,37 @@ static int ehci_reset (struct ehci_hcd *
command |= CMD_RESET;
dbg_cmd (ehci, "reset", command);
ehci_writel(ehci, command, &ehci->regs->command);
+
+ if (ehci->qca_force_host_mode) {
+ u32 usbmode;
+
+ udelay(1000);
+
+ usbmode = ehci_readl(ehci, &ehci->regs->usbmode);
+ usbmode |= USBMODE_CM_HC | (1 << 4);
+ ehci_writel(ehci, usbmode, &ehci->regs->usbmode);
+
+ ehci_dbg(ehci, "forced host mode, usbmode: %08x\n",
+ ehci_readl(ehci, &ehci->regs->usbmode));
+ }
+
+ if (ehci->qca_force_16bit_ptw) {
+ u32 port_status;
+
+ udelay(1000);
+
+ /* enable 16-bit UTMI interface */
+ port_status = ehci_readl(ehci, &ehci->regs->port_status[0]);
+ port_status |= BIT(28);
+ ehci_writel(ehci, port_status, &ehci->regs->port_status[0]);
+
+ ehci_dbg(ehci, "16-bit UTMI interface enabled, status: %08x\n",
+ ehci_readl(ehci, &ehci->regs->port_status[0]));
+ }
+
+ if (ehci->reset_notifier)
+ ehci->reset_notifier(ehci_to_hcd(ehci));
+
ehci->rh_state = EHCI_RH_HALTED;
ehci->next_statechange = jiffies;
retval = handshake (ehci, &ehci->regs->command,
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -201,6 +201,10 @@ struct ehci_hcd { /* one per controlle
unsigned has_synopsys_hc_bug:1; /* Synopsys HC */
unsigned frame_index_bug:1; /* MosChip (AKA NetMos) */
unsigned ignore_oc:1;
+ unsigned qca_force_host_mode:1;
+ unsigned qca_force_16bit_ptw:1; /* force 16 bit UTMI */
+
+ void (*reset_notifier)(struct usb_hcd *hcd);
/* required for usb32 quirk */
#define OHCI_CTRL_HCFS (3 << 6)
--- a/include/linux/usb/ehci_pdriver.h
+++ b/include/linux/usb/ehci_pdriver.h
@@ -43,6 +43,8 @@ struct usb_ehci_pdata {
unsigned big_endian_mmio:1;
unsigned no_io_watchdog:1;
unsigned ignore_oc:1;
+ unsigned qca_force_host_mode:1;
+ unsigned qca_force_16bit_ptw:1;
/* Turn on all power and clocks */
int (*power_on)(struct platform_device *pdev);
@@ -51,6 +53,7 @@ struct usb_ehci_pdata {
/* Turn on only VBUS suspend power and hotplug detection,
* turn off everything else */
void (*power_suspend)(struct platform_device *pdev);
+ void (*reset_notifier)(struct platform_device *pdev);
};
#endif /* __USB_CORE_EHCI_PDRIVER_H */
--- a/drivers/usb/host/ehci-platform.c
+++ b/drivers/usb/host/ehci-platform.c
@@ -33,6 +33,14 @@
static const char hcd_name[] = "ehci-platform";
+static void ehci_platform_reset_notifier(struct usb_hcd *hcd)
+{
+ struct platform_device *pdev = to_platform_device(hcd->self.controller);
+ struct usb_ehci_pdata *pdata = pdev->dev.platform_data;
+
+ pdata->reset_notifier(pdev);
+}
+
static int ehci_platform_reset(struct usb_hcd *hcd)
{
struct platform_device *pdev = to_platform_device(hcd->self.controller);
@@ -45,6 +53,11 @@ static int ehci_platform_reset(struct us
ehci->big_endian_desc = pdata->big_endian_desc;
ehci->big_endian_mmio = pdata->big_endian_mmio;
ehci->ignore_oc = pdata->ignore_oc;
+ ehci->qca_force_host_mode = pdata->qca_force_host_mode;
+ ehci->qca_force_16bit_ptw = pdata->qca_force_16bit_ptw;
+
+ if (pdata->reset_notifier)
+ ehci->reset_notifier = ehci_platform_reset_notifier;
ehci->caps = hcd->regs + pdata->caps_offset;
retval = ehci_setup(hcd);

86
target/linux/ar71xx/patches-3.8/525-MIPS-ath79-enable-qca-usb-quirks.patch Normal file
View file

@ -0,0 +1,86 @@
--- a/arch/mips/ath79/dev-usb.c
+++ b/arch/mips/ath79/dev-usb.c
@@ -182,14 +182,34 @@ static void __init ar933x_usb_setup(void
&ath79_ehci_pdata_v2, sizeof(ath79_ehci_pdata_v2));
}
-static void __init ar934x_usb_setup(void)
+static void enable_tx_tx_idp_violation_fix(unsigned base)
{
- u32 bootstrap;
+ void __iomem *phy_reg;
+ u32 t;
+
+ phy_reg = ioremap(base, 4);
+ if (!phy_reg)
+ return;
+
+ t = ioread32(phy_reg);
+ t &= ~0xff;
+ t |= 0x58;
+ iowrite32(t, phy_reg);
+
+ iounmap(phy_reg);
+}
- bootstrap = ath79_reset_rr(AR934X_RESET_REG_BOOTSTRAP);
- if (bootstrap & AR934X_BOOTSTRAP_USB_MODE_DEVICE)
+static void ar934x_usb_reset_notifier(struct platform_device *pdev)
+{
+ if (pdev->id != -1)
return;
+ enable_tx_tx_idp_violation_fix(0x18116c94);
+ dev_info(&pdev->dev, "TX-TX IDP fix enabled\n");
+}
+
+static void __init ar934x_usb_setup(void)
+{
ath79_device_reset_set(AR934X_RESET_USBSUS_OVERRIDE);
udelay(1000);
@@ -202,14 +222,44 @@ static void __init ar934x_usb_setup(void
ath79_device_reset_clear(AR934X_RESET_USB_HOST);
udelay(1000);
+ ath79_ehci_pdata_v2.qca_force_host_mode = 1;
+ ath79_ehci_pdata_v2.qca_force_16bit_ptw = 1;
+ if (ath79_soc_rev >= 3)
+ ath79_ehci_pdata_v2.reset_notifier = ar934x_usb_reset_notifier;
+
ath79_usb_register("ehci-platform", -1,
AR934X_EHCI_BASE, AR934X_EHCI_SIZE,
ATH79_CPU_IRQ(3),
&ath79_ehci_pdata_v2, sizeof(ath79_ehci_pdata_v2));
}
+static void qca955x_usb_reset_notifier(struct platform_device *pdev)
+{
+ u32 base;
+
+ switch (pdev->id) {
+ case 0:
+ base = 0x18116c94;
+ break;
+
+ case 1:
+ base = 0x18116e54;
+ break;
+
+ default:
+ return;
+ }
+
+ enable_tx_tx_idp_violation_fix(base);
+ dev_info(&pdev->dev, "TX-TX IDP fix enabled\n");
+}
+
static void __init qca955x_usb_setup(void)
{
+ ath79_ehci_pdata_v2.qca_force_host_mode = 1;
+ ath79_ehci_pdata_v2.qca_force_16bit_ptw = 1;
+ ath79_ehci_pdata_v2.reset_notifier = qca955x_usb_reset_notifier;
+
ath79_usb_register("ehci-platform", 0,
QCA955X_EHCI0_BASE, QCA955X_EHCI_SIZE,
ATH79_IP3_IRQ(0),