ehci-mxc: Make EHCI power/oc polarities configurable
Make EHCI power and overcurrent polarities configurable. If not set, these new
configurartions keep the default register values so that existing board files
do not have to be changed.
Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
diff --git a/drivers/usb/host/ehci-mx5.c b/drivers/usb/host/ehci-mx5.c
index 6f7fe80..7e60c3c 100644
--- a/drivers/usb/host/ehci-mx5.c
+++ b/drivers/usb/host/ehci-mx5.c
@@ -46,29 +46,43 @@
#define MXC_OTG_UCTRL_OWIE_BIT (1 << 27)
/* OTG power mask */
#define MXC_OTG_UCTRL_OPM_BIT (1 << 24)
+/* OTG power pin polarity */
+#define MXC_OTG_UCTRL_O_PWR_POL_BIT (1 << 24)
/* Host1 ULPI interrupt enable */
#define MXC_H1_UCTRL_H1UIE_BIT (1 << 12)
/* HOST1 wakeup intr enable */
#define MXC_H1_UCTRL_H1WIE_BIT (1 << 11)
/* HOST1 power mask */
#define MXC_H1_UCTRL_H1PM_BIT (1 << 8)
+/* HOST1 power pin polarity */
+#define MXC_H1_UCTRL_H1_PWR_POL_BIT (1 << 8)
/* USB_PHY_CTRL_FUNC */
+/* OTG Polarity of Overcurrent */
+#define MXC_OTG_PHYCTRL_OC_POL_BIT (1 << 9)
/* OTG Disable Overcurrent Event */
#define MXC_OTG_PHYCTRL_OC_DIS_BIT (1 << 8)
+/* UH1 Polarity of Overcurrent */
+#define MXC_H1_OC_POL_BIT (1 << 6)
/* UH1 Disable Overcurrent Event */
#define MXC_H1_OC_DIS_BIT (1 << 5)
+/* OTG Power Pin Polarity */
+#define MXC_OTG_PHYCTRL_PWR_POL_BIT (1 << 3)
/* USBH2CTRL */
+#define MXC_H2_UCTRL_H2_OC_POL_BIT (1 << 31)
#define MXC_H2_UCTRL_H2_OC_DIS_BIT (1 << 30)
#define MXC_H2_UCTRL_H2UIE_BIT (1 << 8)
#define MXC_H2_UCTRL_H2WIE_BIT (1 << 7)
#define MXC_H2_UCTRL_H2PM_BIT (1 << 4)
+#define MXC_H2_UCTRL_H2_PWR_POL_BIT (1 << 4)
/* USBH3CTRL */
+#define MXC_H3_UCTRL_H3_OC_POL_BIT (1 << 31)
#define MXC_H3_UCTRL_H3_OC_DIS_BIT (1 << 30)
#define MXC_H3_UCTRL_H3UIE_BIT (1 << 8)
#define MXC_H3_UCTRL_H3WIE_BIT (1 << 7)
+#define MXC_H3_UCTRL_H3_PWR_POL_BIT (1 << 4)
/* USB_CTRL_1 */
#define MXC_USB_CTRL_UH1_EXT_CLK_EN (1 << 25)
@@ -158,12 +172,22 @@
if (flags & MXC_EHCI_INTERNAL_PHY) {
v = __raw_readl(usbother_base +
MXC_USB_PHY_CTR_FUNC_OFFSET);
+ if (flags & MXC_EHCI_OC_PIN_ACTIVE_LOW)
+ v |= MXC_OTG_PHYCTRL_OC_POL_BIT;
+ else
+ v &= ~MXC_OTG_PHYCTRL_OC_POL_BIT;
if (flags & MXC_EHCI_POWER_PINS_ENABLED)
/* OC/USBPWR is used */
v &= ~MXC_OTG_PHYCTRL_OC_DIS_BIT;
else
/* OC/USBPWR is not used */
v |= MXC_OTG_PHYCTRL_OC_DIS_BIT;
+#ifdef CONFIG_MX51
+ if (flags & MXC_EHCI_PWR_PIN_ACTIVE_HIGH)
+ v |= MXC_OTG_PHYCTRL_PWR_POL_BIT;
+ else
+ v &= ~MXC_OTG_PHYCTRL_PWR_POL_BIT;
+#endif
__raw_writel(v, usbother_base +
MXC_USB_PHY_CTR_FUNC_OFFSET);
@@ -174,6 +198,12 @@
else
v |= MXC_OTG_UCTRL_OPM_BIT;
#endif
+#ifdef CONFIG_MX53
+ if (flags & MXC_EHCI_PWR_PIN_ACTIVE_HIGH)
+ v |= MXC_OTG_UCTRL_O_PWR_POL_BIT;
+ else
+ v &= ~MXC_OTG_UCTRL_O_PWR_POL_BIT;
+#endif
__raw_writel(v, usbother_base + MXC_USBCTRL_OFFSET);
}
break;
@@ -193,9 +223,19 @@
else
v |= MXC_H1_UCTRL_H1PM_BIT; /* H1 power mask used */
#endif
+#ifdef CONFIG_MX53
+ if (flags & MXC_EHCI_PWR_PIN_ACTIVE_HIGH)
+ v |= MXC_H1_UCTRL_H1_PWR_POL_BIT;
+ else
+ v &= ~MXC_H1_UCTRL_H1_PWR_POL_BIT;
+#endif
__raw_writel(v, usbother_base + MXC_USBCTRL_OFFSET);
v = __raw_readl(usbother_base + MXC_USB_PHY_CTR_FUNC_OFFSET);
+ if (flags & MXC_EHCI_OC_PIN_ACTIVE_LOW)
+ v |= MXC_H1_OC_POL_BIT;
+ else
+ v &= ~MXC_H1_OC_POL_BIT;
if (flags & MXC_EHCI_POWER_PINS_ENABLED)
v &= ~MXC_H1_OC_DIS_BIT; /* OC is used */
else
@@ -212,20 +252,36 @@
v |= MXC_H2_UCTRL_H2PM_BIT; /* H2 power mask used */
#endif
#ifdef CONFIG_MX53
+ if (flags & MXC_EHCI_OC_PIN_ACTIVE_LOW)
+ v |= MXC_H2_UCTRL_H2_OC_POL_BIT;
+ else
+ v &= ~MXC_H2_UCTRL_H2_OC_POL_BIT;
if (flags & MXC_EHCI_POWER_PINS_ENABLED)
v &= ~MXC_H2_UCTRL_H2_OC_DIS_BIT; /* OC is used */
else
v |= MXC_H2_UCTRL_H2_OC_DIS_BIT; /* OC is not used */
+ if (flags & MXC_EHCI_PWR_PIN_ACTIVE_HIGH)
+ v |= MXC_H2_UCTRL_H2_PWR_POL_BIT;
+ else
+ v &= ~MXC_H2_UCTRL_H2_PWR_POL_BIT;
#endif
__raw_writel(v, usbother_base + MXC_USBH2CTRL_OFFSET);
break;
#ifdef CONFIG_MX53
case 3: /* Host 3 ULPI */
v = __raw_readl(usbother_base + MXC_USBH3CTRL_OFFSET);
+ if (flags & MXC_EHCI_OC_PIN_ACTIVE_LOW)
+ v |= MXC_H3_UCTRL_H3_OC_POL_BIT;
+ else
+ v &= ~MXC_H3_UCTRL_H3_OC_POL_BIT;
if (flags & MXC_EHCI_POWER_PINS_ENABLED)
v &= ~MXC_H3_UCTRL_H3_OC_DIS_BIT; /* OC is used */
else
v |= MXC_H3_UCTRL_H3_OC_DIS_BIT; /* OC is not used */
+ if (flags & MXC_EHCI_PWR_PIN_ACTIVE_HIGH)
+ v |= MXC_H3_UCTRL_H3_PWR_POL_BIT;
+ else
+ v &= ~MXC_H3_UCTRL_H3_PWR_POL_BIT;
__raw_writel(v, usbother_base + MXC_USBH3CTRL_OFFSET);
break;
#endif