Add Stinger96 and IoT Box board support

From: Manivannan Sadhasivam <[email protected]>

Hello,

This series adds Stinger96 and IoT Box board support. These boards are based on STM32MP157A SoC, designed and manufactured by Shiratech solutions.

The Stinger96 is a base board (96Boards IoT Extended edition) while IoT Box adds one mezzanine on top of it and sold as a gateway device.

This series depends on below patchsets already submitted and gone through reviews:

[PATCH v3 0/3] Add Reset and Wakeup support for CCS811 [PATCH v3 0/2] Add CTS/RTS gpio support to STM32 UART

More information about these boards can be found in below links:

https://www.shiratech-solutions.com/products/stinger96/
https://www.shiratech-solutions.com/products/iot-box/

Thanks,
Mani

Changes in v2:

* Used "stm32" prefix for all DT commits
* Dropped custom sdmmc2 pinctrl node since existing node itself has pullup enabled and works fine.

Manivannan Sadhasivam (6):
dt-bindings: Add vendor prefix for Shiratech Solutions
ARM: dts: stm32: Add missing pinctrl entries for STM32MP15
dt-bindings: arm: stm32: Document Stinger96 compatible
ARM: dts: stm32: Add Stinger96 board support
dt-bindings: arm: stm32: Document IoT Box compatible
ARM: dts: stm32: Add IoT Box board support

 .../devicetree/bindings/arm/stm32/stm32.yaml  |   2 +
 .../devicetree/bindings/vendor-prefixes.yaml  |   2 +
 arch/arm/boot/dts/Makefile                    |   2 +
 arch/arm/boot/dts/stm32mp15-pinctrl.dtsi      |  64 ++++
 arch/arm/boot/dts/stm32mp157a-iot-box.dts     |  68 ++++
 arch/arm/boot/dts/stm32mp157a-stinger96.dts   |  12 +
 arch/arm/boot/dts/stm32mp157a-stinger96.dtsi  | 342 ++++++++++++++++++
 7 files changed, 492 insertions(+)
 create mode 100644 arch/arm/boot/dts/stm32mp157a-iot-box.dts
 create mode 100644 arch/arm/boot/dts/stm32mp157a-stinger96.dts
 create mode 100644 arch/arm/boot/dts/stm32mp157a-stinger96.dtsi

2.17.1

From: Manivannan Sadhasivam <[email protected]>

This commit adds devicetree vendor prefix for Shiratech solutions, a SOM/embedded board manufacturing company.

https://www.shiratech-solutions.com/

---
 Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++
 1 file changed, 2 insertions(+)

index e3f1b06d12ae..48ad8f954f33 100644
@@ -902,6 +902,8 @@ patternProperties:
     description: Sharp Corporation
   "^shimafuji,.*":
     description: Shimafuji Electric, Inc.
+  "^shiratech,.*":
+    description: Shiratech Solutions
   "^si-en,.*":
     description: Si-En Technology Ltd.
   "^si-linux,.*":

2.17.1

From: Manivannan Sadhasivam <[email protected]>

These pinctrl definitions will be used by Stinger96/IoTBox boards from Shiratech.

---
 arch/arm/boot/dts/stm32mp15-pinctrl.dtsi | 64 ++++++++++++++++++++++++
 1 file changed, 64 insertions(+)

index aeddcaadb829..858c83038e5a 100644
@@ -1519,6 +1519,30 @@
 		};
 	};
 
+	usart2_pins_b: usart2-1 {
+		pins1 {
+			pinmux = <STM32_PINMUX('F', 5, AF7)>, /* USART2_TX */
+				 <STM32_PINMUX('A', 1, AF7)>; /* USART2_RTS */
+			bias-disable;
+			drive-push-pull;
+			slew-rate = <0>;
+		};
+		pins2 {
+			pinmux = <STM32_PINMUX('F', 4, AF7)>, /* USART2_RX */
+				 <STM32_PINMUX('E', 15, AF7)>; /* USART2_CTS_NSS */
+			bias-disable;
+		};
+	};
+
+	usart2_sleep_pins_b: usart2-sleep-1 {
+		pins {
+			pinmux = <STM32_PINMUX('F', 5, ANALOG)>, /* USART2_TX */
+				 <STM32_PINMUX('A', 1, ANALOG)>, /* USART2_RTS */
+				 <STM32_PINMUX('F', 4, ANALOG)>, /* USART2_RX */
+				 <STM32_PINMUX('E', 15, ANALOG)>; /* USART2_CTS_NSS */
+		};
+	};
+
 	usart3_pins_a: usart3-0 {
 		pins1 {
 			pinmux = <STM32_PINMUX('B', 10, AF7)>; /* USART3_TX */

@@ -1558,6 +1582,19 @@
 		};
 	};
 
+	uart4_pins_c: uart4-2 {
+		pins1 {
+			pinmux = <STM32_PINMUX('G', 11, AF6)>; /* UART4_TX */
+			bias-disable;
+			drive-push-pull;
+			slew-rate = <0>;
+		};
+		pins2 {
+			pinmux = <STM32_PINMUX('B', 2, AF8)>; /* UART4_RX */
+			bias-disable;
+		};
+	};
+
 	uart7_pins_a: uart7-0 {
 		pins1 {
 			pinmux = <STM32_PINMUX('E', 8, AF7)>; /* UART4_TX */

@@ -1573,6 +1610,19 @@
 		};
 	};
 
+	uart7_pins_b: uart7-1 {
+		pins1 {
+			pinmux = <STM32_PINMUX('F', 7, AF7)>; /* UART7_TX */
+			bias-disable;
+			drive-push-pull;
+			slew-rate = <0>;
+		};
+		pins2 {
+			pinmux = <STM32_PINMUX('F', 6, AF7)>; /* UART7_RX */
+			bias-disable;
+		};
+	};
+
 	uart8_pins_a: uart8-0 {
 		pins1 {
 			pinmux = <STM32_PINMUX('E', 1, AF8)>; /* UART8_TX */

@@ -1647,4 +1697,18 @@
 			bias-disable;
 		};
 	};
+
+	spi4_pins_a: spi4-0 {
+		pins {
+			pinmux = <STM32_PINMUX('E', 12, AF5)>, /* SPI4_SCK */
+				 <STM32_PINMUX('E', 6, AF5)>;  /* SPI4_MOSI */
+			bias-disable;
+			drive-push-pull;
+			slew-rate = <1>;
+		};
+		pins2 {
+			pinmux = <STM32_PINMUX('E', 13, AF5)>; /* SPI4_MISO */
+			bias-disable;
+		};
+	};
 };

2.17.1

From: Manivannan Sadhasivam <[email protected]>

Document devicetree compatible of Shiratech Stinger96 board.

---
 Documentation/devicetree/bindings/arm/stm32/stm32.yaml | 1 +
 1 file changed, 1 insertion(+)

index 71ea3f04ab9c..3849f1d0e03e 100644
@@ -39,6 +39,7 @@ properties:
           - enum:
               - arrow,stm32mp157a-avenger96 # Avenger96
               - lxa,stm32mp157c-mc1
+              - shiratech,stm32mp157a-stinger96 # Stinger96
               - st,stm32mp157c-ed1
               - st,stm32mp157a-dk1
               - st,stm32mp157c-dk2

2.17.1

From: Manivannan Sadhasivam <[email protected]>

Stinger96 is a 96Boards IoT Extended edition board designed and manufactured by Shiratech solutions based on STM32MP1 SoC. Following are the features of this board:

* 256MB DDR
* 125MB NAND Flash
* Onboard BG96 modem
* 1x uSD
* 2x USB (1 available as external connector and another connected to BG96)
* 1x SPI
* 1x PCM
* 2x UART (apart from serial console)
* 2x I2C (apart from one connected to PMIC)

Following peripherals are tested and known to work:

* BG96 modem
* 1x I2C (LS-I2C0)
* 1x SPI
* 1x UART (LS-UART0)
* USB (Only Gadget mode)
* uSD

More information about this board can be found in Shiratech website:
https://www.shiratech-solutions.com/products/stinger96/

---
 arch/arm/boot/dts/Makefile                   |   1 +
 arch/arm/boot/dts/stm32mp157a-stinger96.dts  |  12 +
 arch/arm/boot/dts/stm32mp157a-stinger96.dtsi | 342 +++++++++++++++++++
 3 files changed, 355 insertions(+)
 create mode 100644 arch/arm/boot/dts/stm32mp157a-stinger96.dts
 create mode 100644 arch/arm/boot/dts/stm32mp157a-stinger96.dtsi

index f43467b02bcd..966b81dfffd6 100644
@@ -1030,6 +1030,7 @@ dtb-$(CONFIG_ARCH_STM32) += \
 	stm32h743i-disco.dtb \
 	stm32mp157a-avenger96.dtb \
 	stm32mp157a-dk1.dtb \
+	stm32mp157a-stinger96.dtb \
 	stm32mp157c-dhcom-pdk2.dtb \
 	stm32mp157c-dk2.dtb \
 	stm32mp157c-ed1.dtb \

new file mode 100644
index 000000000000..249a53877512
@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (C) 2020 Manivannan Sadhasivam
+ */
+
+/dts-v1/;
+#include "stm32mp157a-stinger96.dtsi"
+
+/ {
+	model = "Shiratech STM32MP157A Stinger96 board";
+	compatible = "shiratech,stm32mp157a-stinger96", "st,stm32mp157";
+};

2.17.1

From: Manivannan Sadhasivam <[email protected]>

Document devicetree compatible of Shiratech IoT Box.

---
 Documentation/devicetree/bindings/arm/stm32/stm32.yaml | 1 +
 1 file changed, 1 insertion(+)

index 3849f1d0e03e..790e6dd48e34 100644
@@ -39,6 +39,7 @@ properties:
           - enum:
               - arrow,stm32mp157a-avenger96 # Avenger96
               - lxa,stm32mp157c-mc1
+              - shiratech,stm32mp157a-iot-box # IoT Box
               - shiratech,stm32mp157a-stinger96 # Stinger96
               - st,stm32mp157c-ed1
               - st,stm32mp157a-dk1

2.17.1

From: Manivannan Sadhasivam <[email protected]>

IoT Box is an IoT gateway device based on Stinger96 board powered by STM32MP1 SoC, designed and manufactured by Shiratech Solutions. This device makes use of Stinger96 board by having it as a base board with one additional mezzanine on top.

Following are the features exposed by this device in addition to the Stinger96 board:

* WiFi/BT
* CCS811 VOC sensor
* 2x Digital microphones IM69D130
* 12x WS2812B LEDs

Following peripherals are tested and known to work:

* WiFi/BT
* CCS811

More information about this device can be found in Shiratech website:
https://www.shiratech-solutions.com/products/iot-box/

---
 arch/arm/boot/dts/Makefile                |  1 +
 arch/arm/boot/dts/stm32mp157a-iot-box.dts | 68 +++++++++++++++++++++++
 2 files changed, 69 insertions(+)
 create mode 100644 arch/arm/boot/dts/stm32mp157a-iot-box.dts

index 966b81dfffd6..455ec6eb6303 100644
@@ -1030,6 +1030,7 @@ dtb-$(CONFIG_ARCH_STM32) += \
 	stm32h743i-disco.dtb \
 	stm32mp157a-avenger96.dtb \
 	stm32mp157a-dk1.dtb \
+	stm32mp157a-iot-box.dtb \
 	stm32mp157a-stinger96.dtb \
 	stm32mp157c-dhcom-pdk2.dtb \
 	stm32mp157c-dk2.dtb \

2.17.1

Hi Mani

Series applied on stm32-next.

Regards
Alex