[PATCH 0/7] Add support for USB OTG on STM32F7xx

[PATCH 0/7] Add support for USB OTG on STM32F7xx

[Amelie Delaunay]

The STM32F7xx MCU family embeds two DWC2 USB OTG cores. One core is USB
OTG FS and the other is USB OTG HS. The USB FS core only works with its
internal phy whilst the USB HS core can work in HS with external ULPI phy
or in FS/LS with the on-chip FS phy.

Amelie Delaunay (7):
  dt-bindings: usb: Document the STM32F7xx DWC2 USB OTG HS core binding
  usb: dwc2: add support for STM32F7xx USB OTG HS
  ARM: dts: stm32: Add USB HS support for STM32F746 MCU
  ARM: dts: stm32: Enable USB HS on stm32746g-eval
  ARM: dts: stm32: Enable USB HS on stm32f746-disco
  ARM: dts: stm32: Add USB FS support for STM32F746 MCU
  ARM: dts: stm32: Enable USB FS on stm32f746-disco

 Documentation/devicetree/bindings/usb/dwc2.txt |  2 +
 arch/arm/boot/dts/stm32746g-eval.dts           | 16 ++++++
 arch/arm/boot/dts/stm32f746-disco.dts          | 30 ++++++++++
 arch/arm/boot/dts/stm32f746.dtsi               | 80 ++++++++++++++++++++++++++
 drivers/usb/dwc2/params.c                      | 11 ++++
 5 files changed, 139 insertions(+)

-- 
2.7.4

[PATCH 1/7] dt-bindings: usb: Document the STM32F7xx DWC2 USB OTG HS core binding

[Amelie Delaunay]

This patch adds binding documentation for DWC2 controller in HS mode found
on STMicroelectronics STM32F7xx SoC.

Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
---
 Documentation/devicetree/bindings/usb/dwc2.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/dwc2.txt b/Documentation/devicetree/bindings/usb/dwc2.txt
index fcf199b..e64d903 100644
--- a/Documentation/devicetree/bindings/usb/dwc2.txt
+++ b/Documentation/devicetree/bindings/usb/dwc2.txt
@@ -19,6 +19,8 @@ Required properties:
   configured in FS mode;
   - "st,stm32f4x9-hsotg": The DWC2 USB HS controller instance in STM32F4x9 SoCs
   configured in HS mode;
+  - "st,stm32f7xx-hsotg": The DWC2 USB HS controller instance in STM32F7xx SoCs
+    configured in HS mode;
 - reg : Should contain 1 register range (address and length)
 - interrupts : Should contain 1 interrupt
 - clocks: clock provider specifier
-- 
2.7.4

Re: [PATCH 1/7] dt-bindings: usb: Document the STM32F7xx DWC2 USB OTG HS core binding

[Rob Herring]

On Thu, Aug 17, 2017 at 11:33:00AM +0200, Amelie Delaunay wrote:
> This patch adds binding documentation for DWC2 controller in HS mode found
> on STMicroelectronics STM32F7xx SoC.
> 
> Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
> ---
>  Documentation/devicetree/bindings/usb/dwc2.txt | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/usb/dwc2.txt b/Documentation/devicetree/bindings/usb/dwc2.txt
> index fcf199b..e64d903 100644
> --- a/Documentation/devicetree/bindings/usb/dwc2.txt
> +++ b/Documentation/devicetree/bindings/usb/dwc2.txt
> @@ -19,6 +19,8 @@ Required properties:
>    configured in FS mode;
>    - "st,stm32f4x9-hsotg": The DWC2 USB HS controller instance in STM32F4x9 SoCs
>    configured in HS mode;
> +  - "st,stm32f7xx-hsotg": The DWC2 USB HS controller instance in STM32F7xx SoCs
> +    configured in HS mode;

Don't use wildcards in compatible strings (not sure how the previous one 
snuck in). Just "stm32f7" (i.e. just drop the xx) is probably specific 
enough though.

>  - reg : Should contain 1 register range (address and length)
>  - interrupts : Should contain 1 interrupt
>  - clocks: clock provider specifier
> -- 
> 2.7.4
> 

Re: [PATCH 1/7] dt-bindings: usb: Document the STM32F7xx DWC2 USB OTG HS core binding

[Amelie DELAUNAY]

On 08/22/2017 04:10 AM, Rob Herring wrote:
> On Thu, Aug 17, 2017 at 11:33:00AM +0200, Amelie Delaunay wrote:
>> This patch adds binding documentation for DWC2 controller in HS mode found
>> on STMicroelectronics STM32F7xx SoC.
>>
>> Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
>> ---
>>   Documentation/devicetree/bindings/usb/dwc2.txt | 2 ++
>>   1 file changed, 2 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/usb/dwc2.txt b/Documentation/devicetree/bindings/usb/dwc2.txt
>> index fcf199b..e64d903 100644
>> --- a/Documentation/devicetree/bindings/usb/dwc2.txt
>> +++ b/Documentation/devicetree/bindings/usb/dwc2.txt
>> @@ -19,6 +19,8 @@ Required properties:
>>     configured in FS mode;
>>     - "st,stm32f4x9-hsotg": The DWC2 USB HS controller instance in STM32F4x9 SoCs
>>     configured in HS mode;
>> +  - "st,stm32f7xx-hsotg": The DWC2 USB HS controller instance in STM32F7xx SoCs
>> +    configured in HS mode;
> 
> Don't use wildcards in compatible strings (not sure how the previous one
> snuck in). Just "stm32f7" (i.e. just drop the xx) is probably specific
> enough though.
OK to drop the "xx", I used them only to match the previous one.

> 
>>   - reg : Should contain 1 register range (address and length)
>>   - interrupts : Should contain 1 interrupt
>>   - clocks: clock provider specifier
>> -- 
>> 2.7.4
>>

[PATCH 2/7] usb: dwc2: add support for STM32F7xx USB OTG HS

[Amelie Delaunay]

This patch adds the dwc2_set_params function for STM32F7xx USB OTG HS.

Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
---
 drivers/usb/dwc2/params.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c
index a3ffe97..015d23e 100644
--- a/drivers/usb/dwc2/params.c
+++ b/drivers/usb/dwc2/params.c
@@ -136,6 +136,15 @@ static void dwc2_set_stm32f4x9_fsotg_params(struct dwc2_hsotg *hsotg)
 	p->activate_stm_fs_transceiver = true;
 }
 
+static void dwc2_set_stm32f7xx_hsotg_params(struct dwc2_hsotg *hsotg)
+{
+	struct dwc2_core_params *p = &hsotg->params;
+
+	p->host_rx_fifo_size = 622;
+	p->host_nperio_tx_fifo_size = 128;
+	p->host_perio_tx_fifo_size = 256;
+}
+
 const struct of_device_id dwc2_of_match_table[] = {
 	{ .compatible = "brcm,bcm2835-usb", .data = dwc2_set_bcm_params },
 	{ .compatible = "hisilicon,hi6220-usb", .data = dwc2_set_his_params  },
@@ -154,6 +163,8 @@ const struct of_device_id dwc2_of_match_table[] = {
 	{ .compatible = "st,stm32f4x9-fsotg",
 	  .data = dwc2_set_stm32f4x9_fsotg_params },
 	{ .compatible = "st,stm32f4x9-hsotg" },
+	{ .compatible = "st,stm32f7xx-hsotg",
+	  .data = dwc2_set_stm32f7xx_hsotg_params },
 	{},
 };
 MODULE_DEVICE_TABLE(of, dwc2_of_match_table);
-- 
2.7.4

[PATCH 3/7] ARM: dts: stm32: Add USB HS support for STM32F746 MCU

[Amelie Delaunay]

This patch adds the USB pins and nodes for USB HS core on STM32F746 SoC.

Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
---
 arch/arm/boot/dts/stm32f746.dtsi | 49 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)

diff --git a/arch/arm/boot/dts/stm32f746.dtsi b/arch/arm/boot/dts/stm32f746.dtsi
index 5633860..fcfe5a6 100644
--- a/arch/arm/boot/dts/stm32f746.dtsi
+++ b/arch/arm/boot/dts/stm32f746.dtsi
@@ -379,6 +379,46 @@
 					bias-disable;
 				};
 			};
+
+			usbotg_hs_pins_a: usbotg_hs@0 {
+				pins {
+					pinmux = <STM32F746_PH4_FUNC_OTG_HS_ULPI_NXT>,
+						 <STM32F746_PI11_FUNC_OTG_HS_ULPI_DIR>,
+						 <STM32F746_PC0_FUNC_OTG_HS_ULPI_STP>,
+						 <STM32F746_PA5_FUNC_OTG_HS_ULPI_CK>,
+						 <STM32F746_PA3_FUNC_OTG_HS_ULPI_D0>,
+						 <STM32F746_PB0_FUNC_OTG_HS_ULPI_D1>,
+						 <STM32F746_PB1_FUNC_OTG_HS_ULPI_D2>,
+						 <STM32F746_PB10_FUNC_OTG_HS_ULPI_D3>,
+						 <STM32F746_PB11_FUNC_OTG_HS_ULPI_D4>,
+						 <STM32F746_PB12_FUNC_OTG_HS_ULPI_D5>,
+						 <STM32F746_PB13_FUNC_OTG_HS_ULPI_D6>,
+						 <STM32F746_PB5_FUNC_OTG_HS_ULPI_D7>;
+					bias-disable;
+					drive-push-pull;
+					slew-rate = <2>;
+				};
+			};
+
+			usbotg_hs_pins_b: usbotg_hs@1 {
+				pins {
+					pinmux = <STM32F746_PH4_FUNC_OTG_HS_ULPI_NXT>,
+						 <STM32F746_PC2_FUNC_OTG_HS_ULPI_DIR>,
+						 <STM32F746_PC0_FUNC_OTG_HS_ULPI_STP>,
+						 <STM32F746_PA5_FUNC_OTG_HS_ULPI_CK>,
+						 <STM32F746_PA3_FUNC_OTG_HS_ULPI_D0>,
+						 <STM32F746_PB0_FUNC_OTG_HS_ULPI_D1>,
+						 <STM32F746_PB1_FUNC_OTG_HS_ULPI_D2>,
+						 <STM32F746_PB10_FUNC_OTG_HS_ULPI_D3>,
+						 <STM32F746_PB11_FUNC_OTG_HS_ULPI_D4>,
+						 <STM32F746_PB12_FUNC_OTG_HS_ULPI_D5>,
+						 <STM32F746_PB13_FUNC_OTG_HS_ULPI_D6>,
+						 <STM32F746_PB5_FUNC_OTG_HS_ULPI_D7>;
+					bias-disable;
+					drive-push-pull;
+					slew-rate = <2>;
+				};
+			};
 		};
 
 		crc: crc@40023000 {
@@ -431,6 +471,15 @@
 			st,mem2mem;
 			status = "disabled";
 		};
+
+		usbotg_hs: usb@40040000 {
+			compatible = "st,stm32f7xx-hsotg";
+			reg = <0x40040000 0x40000>;
+			interrupts = <77>;
+			clocks = <&rcc 0 STM32F7_AHB1_CLOCK(OTGHS)>;
+			clock-names = "otg";
+			status = "disabled";
+		};
 	};
 };
 
-- 
2.7.4

[PATCH 4/7] ARM: dts: stm32: Enable USB HS on stm32746g-eval

[Amelie Delaunay]

This patch enables USB HS on stm32746g-eval (Host mode).

Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
---
 arch/arm/boot/dts/stm32746g-eval.dts | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/arch/arm/boot/dts/stm32746g-eval.dts b/arch/arm/boot/dts/stm32746g-eval.dts
index 69a9579..944501d 100644
--- a/arch/arm/boot/dts/stm32746g-eval.dts
+++ b/arch/arm/boot/dts/stm32746g-eval.dts
@@ -83,6 +83,13 @@
 			gpios = <&gpioc 13 0>;
 		};
 	};
+
+	usbotg_hs_phy: usbphy {
+		#phy-cells = <0>;
+		compatible = "usb-nop-xceiv";
+		clocks = <&rcc 0 STM32F7_AHB1_CLOCK(OTGHSULPI)>;
+		clock-names = "main_clk";
+	};
 };
 
 &clk_hse {
@@ -102,3 +109,12 @@
 	pinctrl-names = "default";
 	status = "okay";
 };
+
+&usbotg_hs {
+	dr_mode = "host";
+	phys = <&usbotg_hs_phy>;
+	phy-names = "usb2-phy";
+	pinctrl-0 = <&usbotg_hs_pins_a>;
+	pinctrl-names = "default";
+	status = "okay";
+};
-- 
2.7.4

Re: [PATCH 4/7] ARM: dts: stm32: Enable USB HS on stm32746g-eval

[Sergei Shtylyov]

Hello!

On 8/17/2017 12:33 PM, Amelie Delaunay wrote:

> This patch enables USB HS on stm32746g-eval (Host mode).
> 
> Signed-off-by: Amelie Delaunay <amelie.delaunay-qxv4g6HH51o@public.gmane.org>
> ---
>   arch/arm/boot/dts/stm32746g-eval.dts | 16 ++++++++++++++++
>   1 file changed, 16 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/stm32746g-eval.dts b/arch/arm/boot/dts/stm32746g-eval.dts
> index 69a9579..944501d 100644
> --- a/arch/arm/boot/dts/stm32746g-eval.dts
> +++ b/arch/arm/boot/dts/stm32746g-eval.dts
> @@ -83,6 +83,13 @@
>   			gpios = <&gpioc 13 0>;
>   		};
>   	};
> +
> +	usbotg_hs_phy: usbphy {

    Name it "usb-phy" please, tpo be m,ore in line with the DT spec.

[...]

MBR, Sergei
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Re: [PATCH 4/7] ARM: dts: stm32: Enable USB HS on stm32746g-eval

[Amelie DELAUNAY]

Hi!

On 08/17/2017 12:44 PM, Sergei Shtylyov wrote:
> Hello!
> 
> On 8/17/2017 12:33 PM, Amelie Delaunay wrote:
> 
>> This patch enables USB HS on stm32746g-eval (Host mode).
>>
>> Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
>> ---
>>   arch/arm/boot/dts/stm32746g-eval.dts | 16 ++++++++++++++++
>>   1 file changed, 16 insertions(+)
>>
>> diff --git a/arch/arm/boot/dts/stm32746g-eval.dts 
>> b/arch/arm/boot/dts/stm32746g-eval.dts
>> index 69a9579..944501d 100644
>> --- a/arch/arm/boot/dts/stm32746g-eval.dts
>> +++ b/arch/arm/boot/dts/stm32746g-eval.dts
>> @@ -83,6 +83,13 @@
>>               gpios = <&gpioc 13 0>;
>>           };
>>       };
>> +
>> +    usbotg_hs_phy: usbphy {
> 
>     Name it "usb-phy" please, tpo be m,ore in line with the DT spec.
OK, will be fixed in v2. Thanks!
> 
> [...]
> 
> MBR, Sergei

Regards,
Amelie

[PATCH 5/7] ARM: dts: stm32: Enable USB HS on stm32f746-disco

[Amelie Delaunay]

This patch enables USB HS on stm32f746-disco (Host mode).

Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
---
 arch/arm/boot/dts/stm32f746-disco.dts | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/arch/arm/boot/dts/stm32f746-disco.dts b/arch/arm/boot/dts/stm32f746-disco.dts
index 18f6560..0d38e9a 100644
--- a/arch/arm/boot/dts/stm32f746-disco.dts
+++ b/arch/arm/boot/dts/stm32f746-disco.dts
@@ -61,6 +61,12 @@
 		serial0 = &usart1;
 	};
 
+	usbotg_hs_phy: usbphy {
+		#phy-cells = <0>;
+		compatible = "usb-nop-xceiv";
+		clocks = <&rcc 0 STM32F7_AHB1_CLOCK(OTGHSULPI)>;
+		clock-names = "main_clk";
+	};
 };
 
 &clk_hse {
@@ -72,3 +78,12 @@
 	pinctrl-names = "default";
 	status = "okay";
 };
+
+&usbotg_hs {
+	dr_mode = "host";
+	phys = <&usbotg_hs_phy>;
+	phy-names = "usb2-phy";
+	pinctrl-0 = <&usbotg_hs_pins_b>;
+	pinctrl-names = "default";
+	status = "okay";
+};
-- 
2.7.4

[PATCH 6/7] ARM: dts: stm32: Add USB FS support for STM32F746 MCU

[Amelie Delaunay]

This patch adds the USB pins and nodes for USB FS core on STM32F746 SoC.

Signed-off-by: Amelie Delaunay <amelie.delaunay-qxv4g6HH51o@public.gmane.org>
---
 arch/arm/boot/dts/stm32f746.dtsi | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/arch/arm/boot/dts/stm32f746.dtsi b/arch/arm/boot/dts/stm32f746.dtsi
index fcfe5a6..a9476ea 100644
--- a/arch/arm/boot/dts/stm32f746.dtsi
+++ b/arch/arm/boot/dts/stm32f746.dtsi
@@ -419,6 +419,28 @@
 					slew-rate = <2>;
 				};
 			};
+
+			usbotg_fs_pins_a: usbotg_fs@0 {
+				pins {
+					pinmux = <STM32F746_PA10_FUNC_OTG_FS_ID>,
+						 <STM32F746_PA11_FUNC_OTG_FS_DM>,
+						 <STM32F746_PA12_FUNC_OTG_FS_DP>;
+					bias-disable;
+					drive-push-pull;
+					slew-rate = <2>;
+				};
+			};
+
+			usbotg_fs_pins_b: usbotg_fs@1 {
+				pins {
+					pinmux = <STM32F746_PB12_FUNC_OTG_HS_ID>,
+						 <STM32F746_PB14_FUNC_OTG_HS_DM>,
+						 <STM32F746_PB15_FUNC_OTG_HS_DP>;
+					bias-disable;
+					drive-push-pull;
+					slew-rate = <2>;
+				};
+			};
 		};
 
 		crc: crc@40023000 {
@@ -480,6 +502,15 @@
 			clock-names = "otg";
 			status = "disabled";
 		};
+
+		usbotg_fs: usb@50000000 {
+			compatible = "st,stm32f4x9-fsotg";
+			reg = <0x50000000 0x40000>;
+			interrupts = <67>;
+			clocks = <&rcc 0 STM32F7_AHB2_CLOCK(OTGFS)>;
+			clock-names = "otg";
+			status = "disabled";
+		};
 	};
 };
 
-- 
2.7.4

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Re: [PATCH 6/7] ARM: dts: stm32: Add USB FS support for STM32F746 MCU

[Sergei Shtylyov]

On 8/17/2017 12:33 PM, Amelie Delaunay wrote:

> This patch adds the USB pins and nodes for USB FS core on STM32F746 SoC.
> 
> Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
> ---
>   arch/arm/boot/dts/stm32f746.dtsi | 31 +++++++++++++++++++++++++++++++
>   1 file changed, 31 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/stm32f746.dtsi b/arch/arm/boot/dts/stm32f746.dtsi
> index fcfe5a6..a9476ea 100644
> --- a/arch/arm/boot/dts/stm32f746.dtsi
> +++ b/arch/arm/boot/dts/stm32f746.dtsi
> @@ -419,6 +419,28 @@
>   					slew-rate = <2>;
>   				};
>   			};
> +
> +			usbotg_fs_pins_a: usbotg_fs@0 {

    Dashes are preferred to underlines in the node names.

[...]

MBR, Sergei

Re: [PATCH 6/7] ARM: dts: stm32: Add USB FS support for STM32F746 MCU

[Amelie DELAUNAY]

On 08/17/2017 12:47 PM, Sergei Shtylyov wrote:
> On 8/17/2017 12:33 PM, Amelie Delaunay wrote:
> 
>> This patch adds the USB pins and nodes for USB FS core on STM32F746 SoC.
>>
>> Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
>> ---
>>   arch/arm/boot/dts/stm32f746.dtsi | 31 +++++++++++++++++++++++++++++++
>>   1 file changed, 31 insertions(+)
>>
>> diff --git a/arch/arm/boot/dts/stm32f746.dtsi 
>> b/arch/arm/boot/dts/stm32f746.dtsi
>> index fcfe5a6..a9476ea 100644
>> --- a/arch/arm/boot/dts/stm32f746.dtsi
>> +++ b/arch/arm/boot/dts/stm32f746.dtsi
>> @@ -419,6 +419,28 @@
>>                       slew-rate = <2>;
>>                   };
>>               };
>> +
>> +            usbotg_fs_pins_a: usbotg_fs@0 {
> 
>     Dashes are preferred to underlines in the node names.
You're right. I'll fix it in v2. Thanks.
> 
> [...]
> 
> MBR, Sergei

Regards,
Amelie

[PATCH 7/7] ARM: dts: stm32: Enable USB FS on stm32f746-disco

[Amelie Delaunay]

This patch enables USB FS on stm32f746-disco (Host mode) with 5V VBUS
enable.

Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
---
 arch/arm/boot/dts/stm32f746-disco.dts | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/arch/arm/boot/dts/stm32f746-disco.dts b/arch/arm/boot/dts/stm32f746-disco.dts
index 0d38e9a..c683040 100644
--- a/arch/arm/boot/dts/stm32f746-disco.dts
+++ b/arch/arm/boot/dts/stm32f746-disco.dts
@@ -67,6 +67,14 @@
 		clocks = <&rcc 0 STM32F7_AHB1_CLOCK(OTGHSULPI)>;
 		clock-names = "main_clk";
 	};
+
+	/* This turns on vbus for otg fs for host mode (dwc2) */
+	vcc5v_otg_fs: vcc5v-otg-fs-regulator {
+		compatible = "regulator-fixed";
+		gpio = <&gpiod 5 0>;
+		regulator-name = "vcc5_host1";
+		regulator-always-on;
+	};
 };
 
 &clk_hse {
@@ -87,3 +95,10 @@
 	pinctrl-names = "default";
 	status = "okay";
 };
+
+&usbotg_fs {
+	dr_mode = "host";
+	pinctrl-0 = <&usbotg_fs_pins_a>;
+	pinctrl-names = "default";
+	status = "okay";
+};
-- 
2.7.4