diff mbox series

[v2,2/2] usb: dwc3: Add support for usb3-phy PHY configuration

Message ID 49fae0cadb1b68d75f067e17fac892a9234b86ac.1646745547.git.michal.simek@xilinx.com
State Superseded
Delegated to: Marek Vasut
Headers show
Series [v2,1/2] generic-phy: s/CONFIG_PHY/CONFIG_IS_ENABLED(PHY)/ | expand

Commit Message

Michal Simek March 8, 2022, 1:19 p.m. UTC
When usb3-phy label is found, PHY driver is called and serdes line is
initialized. This is preparation for serdes/psgtr driver to configure GT
lines based on description in DT.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
---

Changes in v2:
- Add missing header

 drivers/usb/dwc3/dwc3-generic.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

Comments

Marek Vasut March 8, 2022, 1:39 p.m. UTC | #1
On 3/8/22 14:19, Michal Simek wrote:
> When usb3-phy label is found, PHY driver is called and serdes line is
> initialized. This is preparation for serdes/psgtr driver to configure GT
> lines based on description in DT.
> 
> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
> ---
> 
> Changes in v2:
> - Add missing header

I think 1/2 patch was not submitted ?
Michal Simek March 8, 2022, 1:51 p.m. UTC | #2
On 3/8/22 14:39, Marek Vasut wrote:
> On 3/8/22 14:19, Michal Simek wrote:
>> When usb3-phy label is found, PHY driver is called and serdes line is
>> initialized. This is preparation for serdes/psgtr driver to configure GT
>> lines based on description in DT.
>>
>> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
>> ---
>>
>> Changes in v2:
>> - Add missing header
> 
> I think 1/2 patch was not submitted ?

It was but you are not in CC.

M
diff mbox series

Patch

diff --git a/drivers/usb/dwc3/dwc3-generic.c b/drivers/usb/dwc3/dwc3-generic.c
index 01bd0ca190e3..2c5205df62cd 100644
--- a/drivers/usb/dwc3/dwc3-generic.c
+++ b/drivers/usb/dwc3/dwc3-generic.c
@@ -14,6 +14,7 @@ 
 #include <dm/device-internal.h>
 #include <dm/lists.h>
 #include <dwc3-uboot.h>
+#include <generic-phy.h>
 #include <linux/bitops.h>
 #include <linux/delay.h>
 #include <linux/usb/ch9.h>
@@ -409,6 +410,17 @@  static int dwc3_glue_probe(struct udevice *dev)
 	struct udevice *child = NULL;
 	int index = 0;
 	int ret;
+	struct phy phy;
+
+	ret = generic_phy_get_by_name(dev, "usb3-phy", &phy);
+	if (!ret) {
+		ret = generic_phy_init(&phy);
+		if (ret)
+			return ret;
+	} else if (ret != -ENOENT) {
+		debug("could not get phy (err %d)\n", ret);
+		return ret;
+	}
 
 	glue->regs = dev_read_addr(dev);
 
@@ -420,6 +432,12 @@  static int dwc3_glue_probe(struct udevice *dev)
 	if (ret)
 		return ret;
 
+	if (phy.dev) {
+		ret = generic_phy_power_on(&phy);
+		if (ret)
+			return ret;
+	}
+
 	ret = device_find_first_child(dev, &child);
 	if (ret)
 		return ret;