[PATCH v2 1/3] dt-bindings: usb: Add usb-phy property to the jz4740-musb node

[PATCH v2 1/3] dt-bindings: usb: Add usb-phy property to the jz4740-musb node

[Paul Cercueil]

Add a required 'usb-phy' property, to obtain a phandle to the USB PHY
from devicetree.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
---

Notes:
    v2: Change "usb-phy" DT property to "phys"

 Documentation/devicetree/bindings/usb/ingenic,jz4740-musb.txt | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/ingenic,jz4740-musb.txt b/Documentation/devicetree/bindings/usb/ingenic,jz4740-musb.txt
index 620355cee63f..16808721f3ff 100644
--- a/Documentation/devicetree/bindings/usb/ingenic,jz4740-musb.txt
+++ b/Documentation/devicetree/bindings/usb/ingenic,jz4740-musb.txt
@@ -8,9 +8,15 @@ Required properties:
 - interrupt-names: must be "mc"
 - clocks: phandle to the "udc" clock
 - clock-names: must be "udc"
+- phys: phandle to the USB PHY
 
 Example:
 
+usb_phy: usb-phy@0 {
+	compatible = "usb-nop-xceiv";
+	#phy-cells = <0>;
+};
+
 udc: usb@13040000 {
 	compatible = "ingenic,jz4740-musb";
 	reg = <0x13040000 0x10000>;
@@ -21,4 +27,6 @@ udc: usb@13040000 {
 
 	clocks = <&cgu JZ4740_CLK_UDC>;
 	clock-names = "udc";
+
+	phys = <&usb_phy>;
 };
-- 
2.11.0

[PATCH v2 2/3] usb: musb: jz4740: Let the platform probe the PHY

[Paul Cercueil]

By registering a generic USB PHY from within the driver, we may shadow
the USB PHY registered by the platform, which might be different.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
---

Notes:
    v2: No change

 drivers/usb/musb/jz4740.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/usb/musb/jz4740.c b/drivers/usb/musb/jz4740.c
index a60627bf7be3..ad35e09f90bd 100644
--- a/drivers/usb/musb/jz4740.c
+++ b/drivers/usb/musb/jz4740.c
@@ -74,7 +74,6 @@ static struct musb_hdrc_platform_data jz4740_musb_platform_data = {
 
 static int jz4740_musb_init(struct musb *musb)
 {
-	usb_phy_generic_register();
 	musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2);
 	if (IS_ERR(musb->xceiv)) {
 		pr_err("HS UDC: no transceiver configured\n");
@@ -183,7 +182,6 @@ static int jz4740_remove(struct platform_device *pdev)
 	struct jz4740_glue	*glue = platform_get_drvdata(pdev);
 
 	platform_device_unregister(glue->musb);
-	usb_phy_generic_unregister(pdev);
 	clk_disable_unprepare(glue->clk);
 
 	return 0;
-- 
2.11.0

[PATCH v2 3/3] usb: musb: jz4740: obtain USB PHY from devicetree

[Paul Cercueil]

Fall back to devm_usb_get_phy() if devicetree is not available.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
---

Notes:
    v2: Change "usb-phy" DT property to "phys"

 drivers/usb/musb/jz4740.c | 17 +++++++----------
 1 file changed, 7 insertions(+), 10 deletions(-)

diff --git a/drivers/usb/musb/jz4740.c b/drivers/usb/musb/jz4740.c
index ad35e09f90bd..5261f8dfedec 100644
--- a/drivers/usb/musb/jz4740.c
+++ b/drivers/usb/musb/jz4740.c
@@ -74,9 +74,14 @@ static struct musb_hdrc_platform_data jz4740_musb_platform_data = {
 
 static int jz4740_musb_init(struct musb *musb)
 {
-	musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2);
+	struct device *dev = musb->controller->parent;
+
+	if (dev->of_node)
+		musb->xceiv = devm_usb_get_phy_by_phandle(dev, "phys", 0);
+	else
+		musb->xceiv = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2);
 	if (IS_ERR(musb->xceiv)) {
-		pr_err("HS UDC: no transceiver configured\n");
+		dev_err(dev, "No transceiver configured\n");
 		return PTR_ERR(musb->xceiv);
 	}
 
@@ -90,13 +95,6 @@ static int jz4740_musb_init(struct musb *musb)
 	return 0;
 }
 
-static int jz4740_musb_exit(struct musb *musb)
-{
-	usb_put_phy(musb->xceiv);
-
-	return 0;
-}
-
 /*
  * DMA has not been confirmed to work with CONFIG_USB_INVENTRA_DMA,
  * so let's not set up the dma function pointers yet.
@@ -105,7 +103,6 @@ static const struct musb_platform_ops jz4740_musb_ops = {
 	.quirks		= MUSB_DMA_INVENTRA | MUSB_INDEXED_EP,
 	.fifo_mode	= 2,
 	.init		= jz4740_musb_init,
-	.exit		= jz4740_musb_exit,
 };
 
 static int jz4740_probe(struct platform_device *pdev)
-- 
2.11.0

Re: [PATCH v2 1/3] dt-bindings: usb: Add usb-phy property to the jz4740-musb node

[Rob Herring]

On Thu,  4 Apr 2019 11:47:37 +0200, Paul Cercueil wrote:
> Add a required 'usb-phy' property, to obtain a phandle to the USB PHY
> from devicetree.
> 
> Signed-off-by: Paul Cercueil <paul@crapouillou.net>
> ---
> 
> Notes:
>     v2: Change "usb-phy" DT property to "phys"
> 
>  Documentation/devicetree/bindings/usb/ingenic,jz4740-musb.txt | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 

Reviewed-by: Rob Herring <robh@kernel.org>