[PATCH 1/4] Documentation: dt: Add binding info for jz4740-musb driver

[PATCH 1/4] Documentation: dt: Add binding info for jz4740-musb driver

[Paul Cercueil]

This commit adds documentation for the device-tree bindings of the
jz4740-musb driver, which provides support for the USB gadget mode
of the JZ4740 and similar SoCs from Ingenic.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
---
 .../bindings/usb/ingenic,jz4740-musb.txt           | 24 ++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/usb/ingenic,jz4740-musb.txt

diff --git a/Documentation/devicetree/bindings/usb/ingenic,jz4740-musb.txt b/Documentation/devicetree/bindings/usb/ingenic,jz4740-musb.txt
new file mode 100644
index 000000000000..620355cee63f
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/ingenic,jz4740-musb.txt
@@ -0,0 +1,24 @@
+Ingenic JZ4740 MUSB driver
+
+Required properties:
+
+- compatible: Must be "ingenic,jz4740-musb"
+- reg: Address range of the UDC register set
+- interrupts: IRQ number related to the UDC hardware
+- interrupt-names: must be "mc"
+- clocks: phandle to the "udc" clock
+- clock-names: must be "udc"
+
+Example:
+
+udc: usb@13040000 {
+	compatible = "ingenic,jz4740-musb";
+	reg = <0x13040000 0x10000>;
+
+	interrupt-parent = <&intc>;
+	interrupts = <24>;
+	interrupt-names = "mc";
+
+	clocks = <&cgu JZ4740_CLK_UDC>;
+	clock-names = "udc";
+};
-- 
2.11.0

[PATCH 2/4] usb: musb: jz4740: Add support for devicetree

[Paul Cercueil]

Add support for probing the driver from devicetree.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
---
 drivers/usb/musb/jz4740.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/usb/musb/jz4740.c b/drivers/usb/musb/jz4740.c
index 04d8b2bc205a..9a2cebcac260 100644
--- a/drivers/usb/musb/jz4740.c
+++ b/drivers/usb/musb/jz4740.c
@@ -10,6 +10,7 @@
 #include <linux/errno.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/usb/usb_phy_generic.h>
 
@@ -188,11 +189,17 @@ static int jz4740_remove(struct platform_device *pdev)
 	return 0;
 }
 
+static const struct of_device_id jz4740_musb_of_match[] = {
+	{ .compatible = "ingenic,jz4740-musb" },
+	{},
+};
+
 static struct platform_driver jz4740_driver = {
 	.probe		= jz4740_probe,
 	.remove		= jz4740_remove,
 	.driver		= {
 		.name	= "musb-jz4740",
+		.of_match_table = of_match_ptr(jz4740_musb_of_match),
 	},
 };
 
-- 
2.11.0

[PATCH 3/4] usb: musb: jz4740: Drop dependency on MACH_JZ4740, use COMPILE_TEST

[Paul Cercueil]

Depending on MACH_INGENIC prevent us from creating a generic kernel that
works on more than one MIPS board. Instead, we just depend on MIPS being
set.

On other architectures, this driver can still be built, thanks to
COMPILE_TEST. This is used by automated tools to find bugs, for
instance.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
---
 drivers/usb/musb/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig
index ad08895e78f9..6f5b0ed6a507 100644
--- a/drivers/usb/musb/Kconfig
+++ b/drivers/usb/musb/Kconfig
@@ -111,7 +111,7 @@ config USB_MUSB_UX500
 config USB_MUSB_JZ4740
 	tristate "JZ4740"
 	depends on NOP_USB_XCEIV
-	depends on MACH_JZ4740 || COMPILE_TEST
+	depends on MIPS || COMPILE_TEST
 	depends on USB_MUSB_GADGET
 	depends on USB_OTG_BLACKLIST_HUB
 
-- 
2.11.0

[PATCH 4/4] usb: musb: jz4740: Drop dependency on USB_OTG_BLACKLIST_HUB

[Paul Cercueil]

The USB IP in the JZ4740 SoC does not support host mode, only gadget
mode.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
---
 drivers/usb/musb/Kconfig | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig
index 6f5b0ed6a507..a884179bc3c0 100644
--- a/drivers/usb/musb/Kconfig
+++ b/drivers/usb/musb/Kconfig
@@ -113,7 +113,6 @@ config USB_MUSB_JZ4740
 	depends on NOP_USB_XCEIV
 	depends on MIPS || COMPILE_TEST
 	depends on USB_MUSB_GADGET
-	depends on USB_OTG_BLACKLIST_HUB
 
 config USB_MUSB_AM335X_CHILD
 	tristate
-- 
2.11.0

Re: [PATCH 1/4] Documentation: dt: Add binding info for jz4740-musb driver

[Rob Herring]

On Thu, 13 Dec 2018 15:45:52 +0100, Paul Cercueil wrote:
> This commit adds documentation for the device-tree bindings of the
> jz4740-musb driver, which provides support for the USB gadget mode
> of the JZ4740 and similar SoCs from Ingenic.
> 
> Signed-off-by: Paul Cercueil <paul@crapouillou.net>
> ---
>  .../bindings/usb/ingenic,jz4740-musb.txt           | 24 ++++++++++++++++++++++
>  1 file changed, 24 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/usb/ingenic,jz4740-musb.txt
> 

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

Re: [PATCH 2/4] usb: musb: jz4740: Add support for devicetree

[Bin Liu]

Hi,

On Thu, Dec 13, 2018 at 03:45:53PM +0100, Paul Cercueil wrote:
> Add support for probing the driver from devicetree.
> 
> Signed-off-by: Paul Cercueil <paul@crapouillou.net>
> ---
>  drivers/usb/musb/jz4740.c | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/drivers/usb/musb/jz4740.c b/drivers/usb/musb/jz4740.c
> index 04d8b2bc205a..9a2cebcac260 100644
> --- a/drivers/usb/musb/jz4740.c
> +++ b/drivers/usb/musb/jz4740.c
> @@ -10,6 +10,7 @@
>  #include <linux/errno.h>
>  #include <linux/kernel.h>
>  #include <linux/module.h>
> +#include <linux/of_device.h>
>  #include <linux/platform_device.h>
>  #include <linux/usb/usb_phy_generic.h>
>  
> @@ -188,11 +189,17 @@ static int jz4740_remove(struct platform_device *pdev)
>  	return 0;
>  }
>  
> +static const struct of_device_id jz4740_musb_of_match[] = {
> +	{ .compatible = "ingenic,jz4740-musb" },
> +	{},
> +};

should be wrapped by '#ifdef CONFIG_OF'?

miss MODULE_DEVICE_TABLE()

> +
>  static struct platform_driver jz4740_driver = {
>  	.probe		= jz4740_probe,
>  	.remove		= jz4740_remove,
>  	.driver		= {
>  		.name	= "musb-jz4740",
> +		.of_match_table = of_match_ptr(jz4740_musb_of_match),
>  	},
>  };
>  

Regards,
-Bin.

Re: [PATCH 3/4] usb: musb: jz4740: Drop dependency on MACH_JZ4740, use COMPILE_TEST

[Bin Liu]

Hi,

Please use the following subject instead.

	usb: musb: Kconfig: Drop dependency on MACH_JZ4740 and use COMPILE_TEST for jz4740
	
On Thu, Dec 13, 2018 at 03:45:54PM +0100, Paul Cercueil wrote:
> Depending on MACH_INGENIC prevent us from creating a generic kernel that

did you mean MACH_JZ4740 instead?

Regards,
-Bin.

Re: [PATCH 4/4] usb: musb: jz4740: Drop dependency on USB_OTG_BLACKLIST_HUB

[Bin Liu]

Hi,

Please use the following subject instead.

	usb: musb: Kconfig: Drop dependency on USB_OTG_BLACKLIST_HUB for jz4740

Regards,
-Bin.

On Thu, Dec 13, 2018 at 03:45:55PM +0100, Paul Cercueil wrote:
> The USB IP in the JZ4740 SoC does not support host mode, only gadget
> mode.
> 
> Signed-off-by: Paul Cercueil <paul@crapouillou.net>
> ---
>  drivers/usb/musb/Kconfig | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig
> index 6f5b0ed6a507..a884179bc3c0 100644
> --- a/drivers/usb/musb/Kconfig
> +++ b/drivers/usb/musb/Kconfig
> @@ -113,7 +113,6 @@ config USB_MUSB_JZ4740
>  	depends on NOP_USB_XCEIV
>  	depends on MIPS || COMPILE_TEST
>  	depends on USB_MUSB_GADGET
> -	depends on USB_OTG_BLACKLIST_HUB
>  
>  config USB_MUSB_AM335X_CHILD
>  	tristate
> -- 
> 2.11.0
>