Hi,
On 02/20/2018 02:02 PM, Felipe Balbi wrote:
>
> Hi,
>
> Amelie Delaunay <amelie.delaunay@xxxxxx> writes:
>> On some boards, especially when vbus supply requires large current,
>> and the charge pump on the PHY isn't enough, an external vbus power switch
>> may be used.
>> Add support for this optional external vbus supply in ehci-platform.
>>
>> Signed-off-by: Amelie Delaunay <amelie.delaunay@xxxxxx>
>>
>> ---
>> Changes in v2:
>> * Address Roger Quadros comments: move regulator_enable/disable from
>> ehci_platform_power_on/off to ehci_platform_port_power.
>> ---
>> Documentation/devicetree/bindings/usb/usb-ehci.txt | 1 +
>> drivers/usb/host/ehci-platform.c | 31 ++++++++++++++++++++++
>> 2 files changed, 32 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/usb/usb-ehci.txt b/Documentation/devicetree/bindings/usb/usb-ehci.txt
>> index 3efde12..fc480cd 100644
>> --- a/Documentation/devicetree/bindings/usb/usb-ehci.txt
>> +++ b/Documentation/devicetree/bindings/usb/usb-ehci.txt
>> @@ -19,6 +19,7 @@ Optional properties:
>> - phys : phandle + phy specifier pair
>> - phy-names : "usb"
>> - resets : phandle + reset specifier pair
>> + - vbus-supply : phandle of regulator supplying vbus
>>
>> Example (Sequoia 440EPx):
>> ehci@e0000300 {
>> diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c
>> index b065a96..05be100 100644
>> --- a/drivers/usb/host/ehci-platform.c
>> +++ b/drivers/usb/host/ehci-platform.c
>> @@ -29,6 +29,7 @@
>> #include <linux/of.h>
>> #include <linux/phy/phy.h>
>> #include <linux/platform_device.h>
>> +#include <linux/regulator/consumer.h>
>> #include <linux/reset.h>
>> #include <linux/usb.h>
>> #include <linux/usb/hcd.h>
>> @@ -46,6 +47,7 @@ struct ehci_platform_priv {
>> struct reset_control *rsts;
>> struct phy **phys;
>> int num_phys;
>> + struct regulator *vbus_supply;
>> bool reset_on_resume;
>> };
>>
>> @@ -76,6 +78,25 @@ static int ehci_platform_reset(struct usb_hcd *hcd)
>> return 0;
>> }
>>
>> +static int ehci_platform_port_power(struct usb_hcd *hcd, int portnum,
>> + bool enable)
>> +{
>> + struct ehci_platform_priv *priv = hcd_to_ehci_priv(hcd);
>> + int ret = 0;
>> +
>> + if (priv->vbus_supply) {
>
> you can reduce indentation here:
>
> if (!priv->vbus_supply)
> return 0;
>
You're right, thanks! I will fix it in upcoming v3, waiting for other
additional comments.
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