[PATCH 2/7] usb: ehci-mx6: Add i.MX8 OTG controller support
Peng Fan
peng.fan at nxp.com
Mon Jun 29 04:13:45 CEST 2020
From: Ye Li <ye.li at nxp.com>
The i.MX8 has two USB controllers: USBOH and USB3. The USBOH reuses
previous i.MX6/7. It has same PHY IP as i.MX7ULP but NC registers
are same as i.MX7D. So add its support in ehci-mx6 driver.
Also the driver is updated to remove build warning for 64 bits CPU.
Signed-off-by: Ye Li <ye.li at nxp.com>
Signed-off-by: Peng Fan <peng.fan at nxp.com>
---
drivers/usb/host/Kconfig | 4 +-
drivers/usb/host/ehci-mx6.c | 97 ++++++++++++++++++++++++++++++++++++++-------
2 files changed, 85 insertions(+), 16 deletions(-)
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 1c374a7bd8..f48547caa0 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -139,8 +139,8 @@ config USB_EHCI_MX5
Enables support for the on-chip EHCI controller on i.MX5 SoCs.
config USB_EHCI_MX6
- bool "Support for i.MX6/i.MX7ULP on-chip EHCI USB controller"
- depends on ARCH_MX6 || ARCH_MX7ULP
+ bool "Support for i.MX6/i.MX7ULP/i.MX8 on-chip EHCI USB controller"
+ depends on ARCH_MX6 || ARCH_MX7ULP || ARCH_IMX8
default y
---help---
Enables support for the on-chip EHCI controller on i.MX6 SoCs.
diff --git a/drivers/usb/host/ehci-mx6.c b/drivers/usb/host/ehci-mx6.c
index e654595683..191d619220 100644
--- a/drivers/usb/host/ehci-mx6.c
+++ b/drivers/usb/host/ehci-mx6.c
@@ -62,12 +62,20 @@ DECLARE_GLOBAL_DATA_PTR;
#define UCTRL_OVER_CUR_POL (1 << 8) /* OTG Polarity of Overcurrent */
#define UCTRL_OVER_CUR_DIS (1 << 7) /* Disable OTG Overcurrent Detection */
+#define PLL_USB_EN_USB_CLKS_MASK (0x01 << 6)
+#define PLL_USB_PWR_MASK (0x01 << 12)
+#define PLL_USB_ENABLE_MASK (0x01 << 13)
+#define PLL_USB_BYPASS_MASK (0x01 << 16)
+#define PLL_USB_REG_ENABLE_MASK (0x01 << 21)
+#define PLL_USB_DIV_SEL_MASK (0x07 << 22)
+#define PLL_USB_LOCK_MASK (0x01 << 31)
+
/* USBCMD */
#define UCMD_RUN_STOP (1 << 0) /* controller run/stop */
#define UCMD_RESET (1 << 1) /* controller reset */
-#if defined(CONFIG_MX6) || defined(CONFIG_MX7ULP)
-static const unsigned phy_bases[] = {
+#if defined(CONFIG_MX6) || defined(CONFIG_MX7ULP) || defined(CONFIG_IMX8)
+static const ulong phy_bases[] = {
USB_PHY0_BASE_ADDR,
#if defined(USB_PHY1_BASE_ADDR)
USB_PHY1_BASE_ADDR,
@@ -101,6 +109,53 @@ static void usb_power_config(int index)
scg_enable_usb_pll(true);
+#elif defined(CONFIG_IMX8)
+ struct usbphy_regs __iomem *usbphy =
+ (struct usbphy_regs __iomem *)USB_PHY0_BASE_ADDR;
+ int timeout = 1000000;
+
+ if (index > 0)
+ return;
+
+ writel(ANADIG_USB2_CHRG_DETECT_EN_B |
+ ANADIG_USB2_CHRG_DETECT_CHK_CHRG_B,
+ &usbphy->usb1_chrg_detect);
+
+ if (!(readl(&usbphy->usb1_pll_480_ctrl) & PLL_USB_LOCK_MASK)) {
+
+ /* Enable the regulator first */
+ writel(PLL_USB_REG_ENABLE_MASK,
+ &usbphy->usb1_pll_480_ctrl_set);
+
+ /* Wait at least 25us */
+ udelay(25);
+
+ /* Enable the power */
+ writel(PLL_USB_PWR_MASK, &usbphy->usb1_pll_480_ctrl_set);
+
+ /* Wait lock */
+ while (timeout--) {
+ if (readl(&usbphy->usb1_pll_480_ctrl) &
+ PLL_USB_LOCK_MASK)
+ break;
+ udelay(10);
+ }
+
+ if (timeout <= 0) {
+ /* If timeout, we power down the pll */
+ writel(PLL_USB_PWR_MASK,
+ &usbphy->usb1_pll_480_ctrl_clr);
+ return;
+ }
+ }
+
+ /* Clear the bypass */
+ writel(PLL_USB_BYPASS_MASK, &usbphy->usb1_pll_480_ctrl_clr);
+
+ /* Enable the PLL clock out to USB */
+ writel((PLL_USB_EN_USB_CLKS_MASK | PLL_USB_ENABLE_MASK),
+ &usbphy->usb1_pll_480_ctrl_set);
+
#else
struct anatop_regs __iomem *anatop =
(struct anatop_regs __iomem *)ANATOP_BASE_ADDR;
@@ -212,6 +267,20 @@ struct usbnc_regs {
u32 reserve0[2];
u32 hsic_ctrl;
};
+#elif defined(CONFIG_IMX8)
+struct usbnc_regs {
+ u32 ctrl1;
+ u32 ctrl2;
+ u32 reserve1[10];
+ u32 phy_cfg1;
+ u32 phy_cfg2;
+ u32 reserve2;
+ u32 phy_status;
+ u32 reserve3[4];
+ u32 adp_cfg1;
+ u32 adp_cfg2;
+ u32 adp_status;
+};
#else
/* Base address for this IP block is 0x02184800 */
struct usbnc_regs {
@@ -240,7 +309,7 @@ struct usbnc_regs {
static void usb_power_config(int index)
{
- struct usbnc_regs *usbnc = (struct usbnc_regs *)(USB_BASE_ADDR +
+ struct usbnc_regs *usbnc = (struct usbnc_regs *)(ulong)(USB_BASE_ADDR +
(0x10000 * index) + USBNC_OFFSET);
void __iomem *phy_cfg2 = (void __iomem *)(&usbnc->phy_cfg2);
@@ -253,7 +322,7 @@ static void usb_power_config(int index)
int usb_phy_mode(int port)
{
- struct usbnc_regs *usbnc = (struct usbnc_regs *)(USB_BASE_ADDR +
+ struct usbnc_regs *usbnc = (struct usbnc_regs *)(ulong)(USB_BASE_ADDR +
(0x10000 * port) + USBNC_OFFSET);
void __iomem *status = (void __iomem *)(&usbnc->phy_status);
u32 val;
@@ -292,8 +361,8 @@ static void usb_oc_config(int index)
struct usbnc_regs *usbnc = (struct usbnc_regs *)(USB_BASE_ADDR +
USB_OTHERREGS_OFFSET);
void __iomem *ctrl = (void __iomem *)(&usbnc->ctrl[index]);
-#elif defined(CONFIG_MX7) || defined(CONFIG_MX7ULP)
- struct usbnc_regs *usbnc = (struct usbnc_regs *)(USB_BASE_ADDR +
+#elif defined(CONFIG_MX7) || defined(CONFIG_MX7ULP) || defined(CONFIG_IMX8)
+ struct usbnc_regs *usbnc = (struct usbnc_regs *)(ulong)(USB_BASE_ADDR +
(0x10000 * index) + USBNC_OFFSET);
void __iomem *ctrl = (void __iomem *)(&usbnc->ctrl1);
#endif
@@ -376,7 +445,7 @@ int ehci_mx6_common_init(struct usb_ehci *ehci, int index)
usb_power_config(index);
usb_oc_config(index);
-#if defined(CONFIG_MX6) || defined(CONFIG_MX7ULP)
+#if defined(CONFIG_MX6) || defined(CONFIG_MX7ULP) || defined(CONFIG_IMX8)
usb_internal_phy_clock_gate(index, 1);
usb_phy_enable(index, ehci);
#endif
@@ -395,10 +464,10 @@ int ehci_hcd_init(int index, enum usb_init_type init,
enum usb_init_type type;
#if defined(CONFIG_MX6)
u32 controller_spacing = 0x200;
-#elif defined(CONFIG_MX7) || defined(CONFIG_MX7ULP)
+#elif defined(CONFIG_MX7) || defined(CONFIG_MX7ULP) || defined(CONFIG_IMX8)
u32 controller_spacing = 0x10000;
#endif
- struct usb_ehci *ehci = (struct usb_ehci *)(USB_BASE_ADDR +
+ struct usb_ehci *ehci = (struct usb_ehci *)(ulong)(USB_BASE_ADDR +
(controller_spacing * index));
int ret;
@@ -422,8 +491,8 @@ int ehci_hcd_init(int index, enum usb_init_type init,
type = board_usb_phy_mode(index);
if (hccr && hcor) {
- *hccr = (struct ehci_hccr *)((uint32_t)&ehci->caplength);
- *hcor = (struct ehci_hcor *)((uint32_t)*hccr +
+ *hccr = (struct ehci_hccr *)((ulong)&ehci->caplength);
+ *hcor = (struct ehci_hcor *)((ulong)*hccr +
HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
}
@@ -509,7 +578,7 @@ static int ehci_usb_phy_mode(struct udevice *dev)
* About fsl,usbphy, Refer to
* Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt.
*/
- if (is_mx6() || is_mx7ulp()) {
+ if (is_mx6() || is_mx7ulp() || is_imx8()) {
phy_off = fdtdec_lookup_phandle(blob,
offset,
"fsl,usbphy");
@@ -655,8 +724,8 @@ static int ehci_usb_probe(struct udevice *dev)
mdelay(10);
- hccr = (struct ehci_hccr *)((uint32_t)&ehci->caplength);
- hcor = (struct ehci_hcor *)((uint32_t)hccr +
+ hccr = (struct ehci_hccr *)((ulong)&ehci->caplength);
+ hcor = (struct ehci_hcor *)((ulong)hccr +
HC_LENGTH(ehci_readl(&(hccr)->cr_capbase)));
return ehci_register(dev, hccr, hcor, &mx6_ehci_ops, 0, priv->init_type);
--
2.16.4
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