diff options
| author | Marek Vasut <marek.vasut+renesas@gmail.com> | 2019-08-22 17:53:04 +0200 |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2019-08-22 18:23:36 +0200 |
| commit | 769a9cd4bbd7ae9b8170b3dd6ba54b84fde59224 (patch) | |
| tree | e45209f18c5392a07d30d2892e1e5d2aba95cb37 /drivers/usb | |
| parent | 8b5483015496100b3f5a790a58cc3019815654e0 (diff) | |
| download | u-boot-769a9cd4bbd7ae9b8170b3dd6ba54b84fde59224.tar.gz | |
usb: r8a66597: Add optional DM VBUS regulator support
Add DM regulator support for toggling VBUS, this is useful on boards
which control the VBUS e.g. through GPIO.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Chris Brandt <chris.brandt@renesas.com>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/host/r8a66597-hcd.c | 29 | ||||
| -rw-r--r-- | drivers/usb/host/r8a66597.h | 1 |
2 files changed, 30 insertions, 0 deletions
diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c index 8b60ab2c6d..a37696d83f 100644 --- a/drivers/usb/host/r8a66597-hcd.c +++ b/drivers/usb/host/r8a66597-hcd.c @@ -11,6 +11,7 @@ #include <usb.h> #include <asm/io.h> #include <linux/iopoll.h> +#include <power/regulator.h> #include "r8a66597.h" @@ -818,9 +819,27 @@ static int r8a66597_usb_probe(struct udevice *dev) { struct r8a66597 *priv = dev_get_priv(dev); struct usb_bus_priv *bus_priv = dev_get_uclass_priv(dev); + int ret; bus_priv->desc_before_addr = true; + if (CONFIG_IS_ENABLED(DM_REGULATOR)) { + ret = device_get_supply_regulator(dev, "vbus-supply", + &priv->vbus_supply); + if (ret) { + dev_err(dev, + "can't get VBUS supply\n"); + return ret; + } + + ret = regulator_set_enable(priv->vbus_supply, true); + if (ret) { + dev_err(dev, + "can't enable VBUS supply\n"); + return ret; + } + } + disable_controller(priv); mdelay(100); @@ -838,9 +857,19 @@ static int r8a66597_usb_probe(struct udevice *dev) static int r8a66597_usb_remove(struct udevice *dev) { struct r8a66597 *priv = dev_get_priv(dev); + int ret; disable_controller(priv); + if (CONFIG_IS_ENABLED(DM_REGULATOR)) { + ret = regulator_set_enable(priv->vbus_supply, false); + if (ret) { + dev_err(dev, + "can't disable VBUS supply\n"); + return ret; + } + } + return 0; } diff --git a/drivers/usb/host/r8a66597.h b/drivers/usb/host/r8a66597.h index 3077bc7999..b6110d6b3f 100644 --- a/drivers/usb/host/r8a66597.h +++ b/drivers/usb/host/r8a66597.h @@ -396,6 +396,7 @@ struct r8a66597 { unsigned short port_change; u16 speed; /* HSMODE or FSMODE or LSMODE */ unsigned char rh_devnum; + struct udevice *vbus_supply; }; static inline u16 r8a66597_read(struct r8a66597 *r8a66597, unsigned long offset) |