[PATCH v2 0/3] Add support for IDO-SBC2D06-V1B-22W

STALE1776d

Revision v2 of 3 in this series.

9 messages, 3 authors, 2021-09-21 · open the first message on its own page

[PATCH v2 0/3] Add support for IDO-SBC2D06-V1B-22W

From: Romain Perier <romain.perier@gmail.com>
Date: 2021-09-14 18:42:12 

IDO-SOM2D01 is an ultra-small SOM module based on SigmaStar SSD201/SSD202
SoC (ARM Cortex A7 core). The module integrates WIFI, NAND and PM
circuits on a PCB area of 2.95CM x 2.95CM. The SoC integrates 128 MB of
DDR3 on-chip.

IDO-SBC2D06-V1B-22W is an dual-ethernet SBC powered by a IDO-SOM2D01,
that embeds a MicroSD card slot, 4-lane MIPI DSI connector for 4-inch
RGB565 display or 7-inch RGB888 display, Dual 10/100M Ethernet ports,
and more.

This series adds support for this SOM and this boards.

Changes since v1:
- Removed the commit that adds me as co-maintainer (merged)
- Fixed alphabetic order in dt-bindings
- Moved the commit that adds vendor prefix before adding the DT for the
  board (re-ordered commits)
- Removed unneeded space

Romain Perier (3):
  ARM: mstar: Mark timer with arm,cpu-registers-not-fw-configured
  dt-bindings: add vendor prefix for Wireless Tag
  ARM: dts: mstar: Add the Wireless Tag IDO-SBC2D06-V1B-22W

 .../devicetree/bindings/arm/mstar/mstar.yaml  |  2 ++
 .../devicetree/bindings/vendor-prefixes.yaml  |  2 ++
 arch/arm/boot/dts/Makefile                    |  1 +
 .../dts/mstar-infinity2m-ssd201-som2d01.dtsi  | 20 +++++++++++++
 ...sd202d-wirelesstag-ido-sbc2d06-v1b-22w.dts | 23 +++++++++++++++
 ...ity2m-ssd202d-wirelesstag-ido-som2d01.dtsi | 28 +++++++++++++++++++
 arch/arm/boot/dts/mstar-v7.dtsi               |  1 +
 7 files changed, 77 insertions(+)
 create mode 100644 arch/arm/boot/dts/mstar-infinity2m-ssd201-som2d01.dtsi
 create mode 100644 arch/arm/boot/dts/mstar-infinity2m-ssd202d-wirelesstag-ido-sbc2d06-v1b-22w.dts
 create mode 100644 arch/arm/boot/dts/mstar-infinity2m-ssd202d-wirelesstag-ido-som2d01.dtsi

-- 
2.33.0

[PATCH v2 1/3] ARM: mstar: Mark timer with arm,cpu-registers-not-fw-configured

From: Romain Perier <romain.perier@gmail.com>
Date: 2021-09-14 18:42:15 

The vendor u-boot does not configure the arch timer correctly on
MStar, let Linux do it.

Signed-off-by: Romain Perier <romain.perier@gmail.com>
---
 arch/arm/boot/dts/mstar-v7.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/boot/dts/mstar-v7.dtsi b/arch/arm/boot/dts/mstar-v7.dtsi
index 2273295e140f..982dba9d28eb 100644
--- a/arch/arm/boot/dts/mstar-v7.dtsi
+++ b/arch/arm/boot/dts/mstar-v7.dtsi
@@ -39,6 +39,7 @@ arch_timer {
 		 * u-boot is broken
 		 */
 		clock-frequency = <6000000>;
+		arm,cpu-registers-not-fw-configured;
 	};
 
 	pmu: pmu {
-- 
2.33.0

Re: [PATCH v2 1/3] ARM: mstar: Mark timer with arm,cpu-registers-not-fw-configured

From: Daniel Palmer <hidden>
Date: 2021-09-15 09:56:34 

Hi Romain,

On Wed, 15 Sept 2021 at 03:42, Romain Perier [off-list ref] wrote:
+               arm,cpu-registers-not-fw-configured;
This looks good to me.
I guess the title should be "ARM: dts: mstar: blah" but I can fix that
up when I pull it into the mstar dt branch for 5.16 if we don't need
another revision.

Cheers,

Daniel

[PATCH v2 2/3] dt-bindings: add vendor prefix for Wireless Tag

From: Romain Perier <romain.perier@gmail.com>
Date: 2021-09-14 18:42:19 

This adds a vendor prefix for wireless tag boards and SOMs.

Signed-off-by: Romain Perier <romain.perier@gmail.com>
---
 Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
index a867f7102c35..de18b6fdbf56 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
+++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
@@ -1296,6 +1296,8 @@ patternProperties:
     description: Winbond Electronics corp.
   "^winstar,.*":
     description: Winstar Display Corp.
+  "^wirelesstag,.*":
+    description: Wireless Tag (qiming yunduan)
   "^wits,.*":
     description: Shenzhen Merrii Technology Co., Ltd. (WITS)
   "^wlf,.*":
-- 
2.33.0

Re: [PATCH v2 2/3] dt-bindings: add vendor prefix for Wireless Tag

From: Rob Herring <robh@kernel.org>
Date: 2021-09-21 21:11:27 

On Tue, 14 Sep 2021 20:41:40 +0200, Romain Perier wrote:
This adds a vendor prefix for wireless tag boards and SOMs.

Signed-off-by: Romain Perier <romain.perier@gmail.com>
---
 Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++
 1 file changed, 2 insertions(+)
Acked-by: Rob Herring <robh@kernel.org>

[PATCH v2 3/3] ARM: dts: mstar: Add the Wireless Tag IDO-SBC2D06-V1B-22W

From: Romain Perier <romain.perier@gmail.com>
Date: 2021-09-14 18:42:21 

The Wireless Tag IDO-SBC2D06-V1B-22W[1] is an SBC powered by SSD202D
with a dual Ethernet and a connector for a 4-inch and 7-inch display.
It embeds a System-On-Module IDO-SOM2D01[2] with an Mstar SSD202 SoC
dual-core Cortex-A7 CPU @ 1.2Ghz , 2D GPU, 128 MB DDR3 (on-chip) and
a 256MB SPI NAND flash. This commit adds basic definition for this
board.

1. http://linux-chenxing.org/infinity2/ido-sbc2d06
2. http://www.wireless-tag.com/portfolio/ido-som2d01

Signed-off-by: Romain Perier <romain.perier@gmail.com>
---
 .../devicetree/bindings/arm/mstar/mstar.yaml  |  2 ++
 arch/arm/boot/dts/Makefile                    |  1 +
 .../dts/mstar-infinity2m-ssd201-som2d01.dtsi  | 20 +++++++++++++
 ...sd202d-wirelesstag-ido-sbc2d06-v1b-22w.dts | 23 +++++++++++++++
 ...ity2m-ssd202d-wirelesstag-ido-som2d01.dtsi | 28 +++++++++++++++++++
 5 files changed, 74 insertions(+)
 create mode 100644 arch/arm/boot/dts/mstar-infinity2m-ssd201-som2d01.dtsi
 create mode 100644 arch/arm/boot/dts/mstar-infinity2m-ssd202d-wirelesstag-ido-sbc2d06-v1b-22w.dts
 create mode 100644 arch/arm/boot/dts/mstar-infinity2m-ssd202d-wirelesstag-ido-som2d01.dtsi

diff --git a/Documentation/devicetree/bindings/arm/mstar/mstar.yaml b/Documentation/devicetree/bindings/arm/mstar/mstar.yaml
index a316eef1b728..10efd703717e 100644
--- a/Documentation/devicetree/bindings/arm/mstar/mstar.yaml
+++ b/Documentation/devicetree/bindings/arm/mstar/mstar.yaml
@@ -25,6 +25,8 @@ properties:
           - enum:
               - honestar,ssd201htv2 # Honestar SSD201_HT_V2 devkit
               - m5stack,unitv2 # M5Stack UnitV2
+              - wirelesstag,ido-som2d01 # Wireless Tag IDO-SOM2D01
+              - wirelesstag,ido-sbc2d06-v1b-22w # Wireless Tag IDO-SBC2D06-1VB-22W
           - const: mstar,infinity2m
 
       - description: infinity3 boards
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 7e0934180724..7f0e92cea716 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -1448,6 +1448,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += \
 dtb-$(CONFIG_ARCH_MILBEAUT) += milbeaut-m10v-evb.dtb
 dtb-$(CONFIG_ARCH_MSTARV7) += \
 	mstar-infinity-msc313-breadbee_crust.dtb \
+	mstar-infinity2m-ssd202d-wirelesstag-ido-sbc2d06-v1b-22w.dtb \
 	mstar-infinity2m-ssd202d-ssd201htv2.dtb \
 	mstar-infinity2m-ssd202d-unitv2.dtb \
 	mstar-infinity3-msc313e-breadbee.dtb \
diff --git a/arch/arm/boot/dts/mstar-infinity2m-ssd201-som2d01.dtsi b/arch/arm/boot/dts/mstar-infinity2m-ssd201-som2d01.dtsi
new file mode 100644
index 000000000000..34df472fed71
--- /dev/null
+++ b/arch/arm/boot/dts/mstar-infinity2m-ssd201-som2d01.dtsi
@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright (c) 2021 thingy.jp.
+ * Author: Daniel Palmer <daniel@thingy.jp>
+ * Author: Romain Perier <romain.perier@gmail.com>
+ */
+
+/ {
+	reg_vcc_dram: regulator-vcc-dram {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_dram";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-boot-on;
+	};
+};
+
+&pm_uart {
+	status = "okay";
+};
diff --git a/arch/arm/boot/dts/mstar-infinity2m-ssd202d-wirelesstag-ido-sbc2d06-v1b-22w.dts b/arch/arm/boot/dts/mstar-infinity2m-ssd202d-wirelesstag-ido-sbc2d06-v1b-22w.dts
new file mode 100644
index 000000000000..20b40b711d4f
--- /dev/null
+++ b/arch/arm/boot/dts/mstar-infinity2m-ssd202d-wirelesstag-ido-sbc2d06-v1b-22w.dts
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright (c) 2021 thingy.jp.
+ * Author: Daniel Palmer <daniel@thingy.jp>
+ * Author: Romain Perier <romain.perier@gmail.com>
+ */
+
+/dts-v1/;
+#include "mstar-infinity2m-ssd202d-wirelesstag-ido-som2d01.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	model = "Wireless Tag IDO-SBC2D06-1VB-22W";
+	compatible = "wirelesstag,ido-sbc2d06-v1b-22w", "wirelesstag,ido-som2d01", "mstar,infinity2m";
+
+	leds {
+		compatible = "gpio-leds";
+		sys_led {
+			gpios = <&gpio SSD20XD_GPIO_GPIO85 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "heartbeat";
+		};
+	};
+};
diff --git a/arch/arm/boot/dts/mstar-infinity2m-ssd202d-wirelesstag-ido-som2d01.dtsi b/arch/arm/boot/dts/mstar-infinity2m-ssd202d-wirelesstag-ido-som2d01.dtsi
new file mode 100644
index 000000000000..d877aff85033
--- /dev/null
+++ b/arch/arm/boot/dts/mstar-infinity2m-ssd202d-wirelesstag-ido-som2d01.dtsi
@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright (c) 2021 thingy.jp.
+ * Author: Daniel Palmer <daniel@thingy.jp>
+ * Author: Romain Perier <romain.perier@gmail.com>
+ */
+
+/dts-v1/;
+#include "mstar-infinity2m-ssd202d.dtsi"
+#include "mstar-infinity2m-ssd201-som2d01.dtsi"
+
+/ {
+	model = "Wireless Tag IDO-SOM2D01 (SSD202D)";
+	compatible = "wirelesstag,ido-som2d01", "mstar,infinity2m";
+
+	aliases {
+		serial0 = &pm_uart;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+};
+
+&reg_vcc_dram {
+	regulator-min-microvolt = <1500000>;
+	regulator-max-microvolt = <1500000>;
+};
-- 
2.33.0

Re: [PATCH v2 3/3] ARM: dts: mstar: Add the Wireless Tag IDO-SBC2D06-V1B-22W

From: Daniel Palmer <hidden>
Date: 2021-09-15 10:09:49 

Hi Romain,

On Wed, 15 Sept 2021 at 03:42, Romain Perier [off-list ref] wrote:
1. http://linux-chenxing.org/infinity2/ido-sbc2d06
2. http://www.wireless-tag.com/portfolio/ido-som2d01
I think these should be Link: xxxx. I can fix this up if/when I put it
into the mstar dt for 5.16 branch though.
quoted hunk
diff --git a/Documentation/devicetree/bindings/arm/mstar/mstar.yaml b/Documentation/devicetree/bindings/arm/mstar/mstar.yaml
index a316eef1b728..10efd703717e 100644
--- a/Documentation/devicetree/bindings/arm/mstar/mstar.yaml
+++ b/Documentation/devicetree/bindings/arm/mstar/mstar.yaml
@@ -25,6 +25,8 @@ properties:
           - enum:
               - honestar,ssd201htv2 # Honestar SSD201_HT_V2 devkit
               - m5stack,unitv2 # M5Stack UnitV2
+              - wirelesstag,ido-som2d01 # Wireless Tag IDO-SOM2D01
+              - wirelesstag,ido-sbc2d06-v1b-22w # Wireless Tag IDO-SBC2D06-1VB-22W
           - const: mstar,infinity2m

       - description: infinity3 boards
Looks fine.
quoted hunk
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 7e0934180724..7f0e92cea716 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -1448,6 +1448,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += \
 dtb-$(CONFIG_ARCH_MILBEAUT) += milbeaut-m10v-evb.dtb
 dtb-$(CONFIG_ARCH_MSTARV7) += \
        mstar-infinity-msc313-breadbee_crust.dtb \
+       mstar-infinity2m-ssd202d-wirelesstag-ido-sbc2d06-v1b-22w.dtb \
        mstar-infinity2m-ssd202d-ssd201htv2.dtb \
        mstar-infinity2m-ssd202d-unitv2.dtb \
        mstar-infinity3-msc313e-breadbee.dtb \
Looks fine.
quoted hunk
diff --git a/arch/arm/boot/dts/mstar-infinity2m-ssd201-som2d01.dtsi b/arch/arm/boot/dts/mstar-infinity2m-ssd201-som2d01.dtsi
new file mode 100644
index 000000000000..34df472fed71
--- /dev/null
+++ b/arch/arm/boot/dts/mstar-infinity2m-ssd201-som2d01.dtsi
@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright (c) 2021 thingy.jp.
+ * Author: Daniel Palmer <daniel@thingy.jp>
+ * Author: Romain Perier <romain.perier@gmail.com>
+ */
+
+/ {
+       reg_vcc_dram: regulator-vcc-dram {
+               compatible = "regulator-fixed";
+               regulator-name = "vcc_dram";
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <1800000>;
+               regulator-boot-on;
+       };
+};
+
+&pm_uart {
+       status = "okay";
+};
Looks fine.
quoted hunk
diff --git a/arch/arm/boot/dts/mstar-infinity2m-ssd202d-wirelesstag-ido-sbc2d06-v1b-22w.dts b/arch/arm/boot/dts/mstar-infinity2m-ssd202d-wirelesstag-ido-sbc2d06-v1b-22w.dts
new file mode 100644
index 000000000000..20b40b711d4f
--- /dev/null
+++ b/arch/arm/boot/dts/mstar-infinity2m-ssd202d-wirelesstag-ido-sbc2d06-v1b-22w.dts
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright (c) 2021 thingy.jp.
+ * Author: Daniel Palmer <daniel@thingy.jp>
+ * Author: Romain Perier <romain.perier@gmail.com>
+ */
+
+/dts-v1/;
+#include "mstar-infinity2m-ssd202d-wirelesstag-ido-som2d01.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+       model = "Wireless Tag IDO-SBC2D06-1VB-22W";
+       compatible = "wirelesstag,ido-sbc2d06-v1b-22w", "wirelesstag,ido-som2d01", "mstar,infinity2m";
+
+       leds {
+               compatible = "gpio-leds";
+               sys_led {
+                       gpios = <&gpio SSD20XD_GPIO_GPIO85 GPIO_ACTIVE_LOW>;
+                       linux,default-trigger = "heartbeat";
+               };
+       };
+};
Looks fine.
quoted hunk
diff --git a/arch/arm/boot/dts/mstar-infinity2m-ssd202d-wirelesstag-ido-som2d01.dtsi b/arch/arm/boot/dts/mstar-infinity2m-ssd202d-wirelesstag-ido-som2d01.dtsi
new file mode 100644
index 000000000000..d877aff85033
--- /dev/null
+++ b/arch/arm/boot/dts/mstar-infinity2m-ssd202d-wirelesstag-ido-som2d01.dtsi
@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright (c) 2021 thingy.jp.
+ * Author: Daniel Palmer <daniel@thingy.jp>
+ * Author: Romain Perier <romain.perier@gmail.com>
+ */
+
+/dts-v1/;
+#include "mstar-infinity2m-ssd202d.dtsi"
+#include "mstar-infinity2m-ssd201-som2d01.dtsi"
+
+/ {
+       model = "Wireless Tag IDO-SOM2D01 (SSD202D)";
+       compatible = "wirelesstag,ido-som2d01", "mstar,infinity2m";
+
+       aliases {
+               serial0 = &pm_uart;
+       };
+
+       chosen {
+               stdout-path = "serial0:115200n8";
+       };
+};
+
+&reg_vcc_dram {
+       regulator-min-microvolt = <1500000>;
+       regulator-max-microvolt = <1500000>;
+};
--
2.33.0
Looks ok.

At some point, probably next week, I'll take these into the
msc313_mainlining branch[0] and rework the commits that build on top
of this.

Cheers,

Daniel

0 - https://github.com/linux-chenxing/linux/tree/msc313_mainlining

Re: [PATCH v2 3/3] ARM: dts: mstar: Add the Wireless Tag IDO-SBC2D06-V1B-22W

From: Rob Herring <robh@kernel.org>
Date: 2021-09-21 21:17:32 

On Wed, Sep 15, 2021 at 07:09:34PM +0900, Daniel Palmer wrote:
Hi Romain,

On Wed, 15 Sept 2021 at 03:42, Romain Perier [off-list ref] wrote:
quoted
1. http://linux-chenxing.org/infinity2/ido-sbc2d06
2. http://www.wireless-tag.com/portfolio/ido-som2d01
I think these should be Link: xxxx. I can fix this up if/when I put it
into the mstar dt for 5.16 branch though.
Not really. 'Link' is for the link to this patch in lore and sometimes 
to a discussion leading to the patch.

Rob

Re: [PATCH v2 3/3] ARM: dts: mstar: Add the Wireless Tag IDO-SBC2D06-V1B-22W

From: Rob Herring <robh@kernel.org>
Date: 2021-09-21 21:14:53 

On Tue, Sep 14, 2021 at 08:41:41PM +0200, Romain Perier wrote:
quoted hunk
The Wireless Tag IDO-SBC2D06-V1B-22W[1] is an SBC powered by SSD202D
with a dual Ethernet and a connector for a 4-inch and 7-inch display.
It embeds a System-On-Module IDO-SOM2D01[2] with an Mstar SSD202 SoC
dual-core Cortex-A7 CPU @ 1.2Ghz , 2D GPU, 128 MB DDR3 (on-chip) and
a 256MB SPI NAND flash. This commit adds basic definition for this
board.

1. http://linux-chenxing.org/infinity2/ido-sbc2d06
2. http://www.wireless-tag.com/portfolio/ido-som2d01

Signed-off-by: Romain Perier <romain.perier@gmail.com>
---
 .../devicetree/bindings/arm/mstar/mstar.yaml  |  2 ++
 arch/arm/boot/dts/Makefile                    |  1 +
 .../dts/mstar-infinity2m-ssd201-som2d01.dtsi  | 20 +++++++++++++
 ...sd202d-wirelesstag-ido-sbc2d06-v1b-22w.dts | 23 +++++++++++++++
 ...ity2m-ssd202d-wirelesstag-ido-som2d01.dtsi | 28 +++++++++++++++++++
 5 files changed, 74 insertions(+)
 create mode 100644 arch/arm/boot/dts/mstar-infinity2m-ssd201-som2d01.dtsi
 create mode 100644 arch/arm/boot/dts/mstar-infinity2m-ssd202d-wirelesstag-ido-sbc2d06-v1b-22w.dts
 create mode 100644 arch/arm/boot/dts/mstar-infinity2m-ssd202d-wirelesstag-ido-som2d01.dtsi

diff --git a/Documentation/devicetree/bindings/arm/mstar/mstar.yaml b/Documentation/devicetree/bindings/arm/mstar/mstar.yaml
index a316eef1b728..10efd703717e 100644
--- a/Documentation/devicetree/bindings/arm/mstar/mstar.yaml
+++ b/Documentation/devicetree/bindings/arm/mstar/mstar.yaml
@@ -25,6 +25,8 @@ properties:
           - enum:
               - honestar,ssd201htv2 # Honestar SSD201_HT_V2 devkit
               - m5stack,unitv2 # M5Stack UnitV2
+              - wirelesstag,ido-som2d01 # Wireless Tag IDO-SOM2D01
+              - wirelesstag,ido-sbc2d06-v1b-22w # Wireless Tag IDO-SBC2D06-1VB-22W
           - const: mstar,infinity2m
 
       - description: infinity3 boards
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 7e0934180724..7f0e92cea716 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -1448,6 +1448,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += \
 dtb-$(CONFIG_ARCH_MILBEAUT) += milbeaut-m10v-evb.dtb
 dtb-$(CONFIG_ARCH_MSTARV7) += \
 	mstar-infinity-msc313-breadbee_crust.dtb \
+	mstar-infinity2m-ssd202d-wirelesstag-ido-sbc2d06-v1b-22w.dtb \
 	mstar-infinity2m-ssd202d-ssd201htv2.dtb \
 	mstar-infinity2m-ssd202d-unitv2.dtb \
 	mstar-infinity3-msc313e-breadbee.dtb \
diff --git a/arch/arm/boot/dts/mstar-infinity2m-ssd201-som2d01.dtsi b/arch/arm/boot/dts/mstar-infinity2m-ssd201-som2d01.dtsi
new file mode 100644
index 000000000000..34df472fed71
--- /dev/null
+++ b/arch/arm/boot/dts/mstar-infinity2m-ssd201-som2d01.dtsi
@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright (c) 2021 thingy.jp.
+ * Author: Daniel Palmer <daniel@thingy.jp>
+ * Author: Romain Perier <romain.perier@gmail.com>
+ */
+
+/ {
+	reg_vcc_dram: regulator-vcc-dram {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_dram";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-boot-on;
+	};
+};
+
+&pm_uart {
+	status = "okay";
+};
diff --git a/arch/arm/boot/dts/mstar-infinity2m-ssd202d-wirelesstag-ido-sbc2d06-v1b-22w.dts b/arch/arm/boot/dts/mstar-infinity2m-ssd202d-wirelesstag-ido-sbc2d06-v1b-22w.dts
new file mode 100644
index 000000000000..20b40b711d4f
--- /dev/null
+++ b/arch/arm/boot/dts/mstar-infinity2m-ssd202d-wirelesstag-ido-sbc2d06-v1b-22w.dts
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright (c) 2021 thingy.jp.
+ * Author: Daniel Palmer <daniel@thingy.jp>
+ * Author: Romain Perier <romain.perier@gmail.com>
+ */
+
+/dts-v1/;
+#include "mstar-infinity2m-ssd202d-wirelesstag-ido-som2d01.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	model = "Wireless Tag IDO-SBC2D06-1VB-22W";
+	compatible = "wirelesstag,ido-sbc2d06-v1b-22w", "wirelesstag,ido-som2d01", "mstar,infinity2m";
Doesn't match the schema. Please run 'make dtbs_check' on this and don't 
add new (non-duplicate) warnings.
quoted hunk
+
+	leds {
+		compatible = "gpio-leds";
+		sys_led {
+			gpios = <&gpio SSD20XD_GPIO_GPIO85 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "heartbeat";
+		};
+	};
+};
diff --git a/arch/arm/boot/dts/mstar-infinity2m-ssd202d-wirelesstag-ido-som2d01.dtsi b/arch/arm/boot/dts/mstar-infinity2m-ssd202d-wirelesstag-ido-som2d01.dtsi
new file mode 100644
index 000000000000..d877aff85033
--- /dev/null
+++ b/arch/arm/boot/dts/mstar-infinity2m-ssd202d-wirelesstag-ido-som2d01.dtsi
@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright (c) 2021 thingy.jp.
+ * Author: Daniel Palmer <daniel@thingy.jp>
+ * Author: Romain Perier <romain.perier@gmail.com>
+ */
+
+/dts-v1/;
+#include "mstar-infinity2m-ssd202d.dtsi"
+#include "mstar-infinity2m-ssd201-som2d01.dtsi"
+
+/ {
+	model = "Wireless Tag IDO-SOM2D01 (SSD202D)";
+	compatible = "wirelesstag,ido-som2d01", "mstar,infinity2m";
+
+	aliases {
+		serial0 = &pm_uart;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+};
+
+&reg_vcc_dram {
+	regulator-min-microvolt = <1500000>;
+	regulator-max-microvolt = <1500000>;
+};
-- 
2.33.0
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