[U-Boot] [PATCH V2 2/3] usb: ehci-mx6: handle vbus-supply
Peng Fan
peng.fan at nxp.com
Thu Dec 22 10:06:43 CET 2016
Drop board_ehci_power when dm usb used and switch to use
regulator api to handle vbus.
Signed-off-by: Peng Fan <peng.fan at nxp.com>
Cc: Marek Vasut <marex at denx.de>
Cc: Simon Glass <sjg at chromium.org>
Cc: Stefano Babic <sbabic at denx.de>
---
V2:
None
drivers/usb/host/ehci-mx6.c | 30 +++++++++++++++++++++++++++---
1 file changed, 27 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/host/ehci-mx6.c b/drivers/usb/host/ehci-mx6.c
index 18b7fc3..7b309b7 100644
--- a/drivers/usb/host/ehci-mx6.c
+++ b/drivers/usb/host/ehci-mx6.c
@@ -17,6 +17,7 @@
#include <asm/imx-common/iomux-v3.h>
#include <asm/imx-common/sys_proto.h>
#include <dm.h>
+#include <power/regulator.h>
#include "ehci.h"
@@ -388,6 +389,7 @@ int ehci_hcd_stop(int index)
struct ehci_mx6_priv_data {
struct ehci_ctrl ctrl;
struct usb_ehci *ehci;
+ struct udevice *vbus_supply;
enum usb_init_type init_type;
int portnr;
};
@@ -403,7 +405,15 @@ static int mx6_init_after_reset(struct ehci_ctrl *dev)
if (ret)
return ret;
- board_ehci_power(priv->portnr, (type == USB_INIT_DEVICE) ? 0 : 1);
+ if (priv->vbus_supply) {
+ ret = regulator_set_enable(priv->vbus_supply,
+ (type == USB_INIT_DEVICE) ?
+ false : true);
+ if (ret) {
+ puts("Error enabling VBUS supply\n");
+ return ret;
+ }
+ }
if (type == USB_INIT_DEVICE)
return 0;
@@ -496,19 +506,33 @@ static int ehci_usb_probe(struct udevice *dev)
struct usb_platdata *plat = dev_get_platdata(dev);
struct usb_ehci *ehci = (struct usb_ehci *)dev_get_addr(dev);
struct ehci_mx6_priv_data *priv = dev_get_priv(dev);
+ enum usb_init_type type = plat->init_type;
struct ehci_hccr *hccr;
struct ehci_hcor *hcor;
int ret;
priv->ehci = ehci;
priv->portnr = dev->seq;
- priv->init_type = plat->init_type;
+ priv->init_type = type;
+
+ ret = device_get_supply_regulator(dev, "vbus-supply",
+ &priv->vbus_supply);
+ if (ret)
+ debug("%s: No vbus supply\n", dev->name);
ret = ehci_mx6_common_init(ehci, priv->portnr);
if (ret)
return ret;
- board_ehci_power(priv->portnr, (priv->init_type == USB_INIT_DEVICE) ? 0 : 1);
+ if (priv->vbus_supply) {
+ ret = regulator_set_enable(priv->vbus_supply,
+ (type == USB_INIT_DEVICE) ?
+ false : true);
+ if (ret) {
+ puts("Error enabling VBUS supply\n");
+ return ret;
+ }
+ }
if (priv->init_type == USB_INIT_HOST) {
setbits_le32(&ehci->usbmode, CM_HOST);
--
2.6.2
More information about the U-Boot
mailing list