[PATCH 0/9] ARM: dts: Add Raspberry Pi CM4 & CM4 IO Board support

[PATCH 0/9] ARM: dts: Add Raspberry Pi CM4 & CM4 IO Board support

[Stefan Wahren]

This series add support for the Raspberry Pi Compute Module 4 and its
IO board.

Stefan Wahren (9):
  ARM: dts: bcm2711: fix emmc2bus node name
  ARM: dts: bcm2711: fix MDIO #address- and #size-cells
  ARM: dts: bcm2711-rpi-4-b: fix sd_io_1v8_reg regulator states
  dt-bindings: display: bcm2835: add optional property power-domains
  ARM: dts: bcm283x-rpi: Move Wifi/BT into separate dtsi
  dt-bindings: arm: bcm2835: Add Raspberry Pi Compute Module 4
  ARM: dts: Add Raspberry Pi Compute Module 4
  ARM: dts: Add Raspberry Pi Compute Module 4 IO Board
  arm64: dts: broadcom: Add reference to RPi CM4 IO Board

 .../devicetree/bindings/arm/bcm/bcm2835.yaml       |   1 +
 .../bindings/display/brcm,bcm2835-dsi0.yaml        |   3 +
 .../bindings/display/brcm,bcm2835-hdmi.yaml        |   3 +
 .../bindings/display/brcm,bcm2835-v3d.yaml         |   3 +
 .../bindings/display/brcm,bcm2835-vec.yaml         |   3 +
 arch/arm/boot/dts/Makefile                         |   1 +
 arch/arm/boot/dts/bcm2711-rpi-4-b.dts              |  42 ++-----
 arch/arm/boot/dts/bcm2711-rpi-cm4-io.dts           | 138 +++++++++++++++++++++
 arch/arm/boot/dts/bcm2711-rpi-cm4.dtsi             | 112 +++++++++++++++++
 arch/arm/boot/dts/bcm2711.dtsi                     |   6 +-
 arch/arm/boot/dts/bcm2835-rpi-zero-w.dts           |  31 ++---
 arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts         |  36 ++----
 arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts         |  36 ++----
 arch/arm/boot/dts/bcm2837-rpi-3-b.dts              |  36 ++----
 arch/arm/boot/dts/bcm283x-rpi-wifi-bt.dtsi         |  34 +++++
 arch/arm64/boot/dts/broadcom/Makefile              |   1 +
 .../arm64/boot/dts/broadcom/bcm2711-rpi-cm4-io.dts |   2 +
 17 files changed, 346 insertions(+), 142 deletions(-)
 create mode 100644 arch/arm/boot/dts/bcm2711-rpi-cm4-io.dts
 create mode 100644 arch/arm/boot/dts/bcm2711-rpi-cm4.dtsi
 create mode 100644 arch/arm/boot/dts/bcm283x-rpi-wifi-bt.dtsi
 create mode 100644 arch/arm64/boot/dts/broadcom/bcm2711-rpi-cm4-io.dts

-- 
2.7.4


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[PATCH 1/9] ARM: dts: bcm2711: fix emmc2bus node name

[Stefan Wahren]

Fix the node name to get the rid of the following DT schema warning:
'emmc2bus' does not match '^([a-z][a-z0-9\\-]+-bus|bus|soc|axi|ahb|apb)
(@[0-9a-f]+)?$'

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
---
 arch/arm/boot/dts/bcm2711.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/bcm2711.dtsi b/arch/arm/boot/dts/bcm2711.dtsi
index b8a4096..afe0ef8 100644
--- a/arch/arm/boot/dts/bcm2711.dtsi
+++ b/arch/arm/boot/dts/bcm2711.dtsi
@@ -405,7 +405,7 @@
 	 * The firmware will find whether the emmc2bus alias is defined, and if
 	 * so, it'll edit the dma-ranges property below accordingly.
 	 */
-	emmc2bus: emmc2bus {
+	emmc2bus: emmc2-bus {
 		compatible = "simple-bus";
 		#address-cells = <2>;
 		#size-cells = <1>;
-- 
2.7.4


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[PATCH 2/9] ARM: dts: bcm2711: fix MDIO #address- and #size-cells

[Stefan Wahren]

The values of #address-cells and #size-cells are swapped. Fix this
and avoid the following DT schema warnings for mdio@e14:

 #address-cells:0:0: 1 was expected
 #size-cells:0:0: 0 was expected

Fixes: be8af7a9e3cc ("ARM: dts: bcm2711-rpi-4: Enable GENET support")
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
---
 arch/arm/boot/dts/bcm2711.dtsi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/bcm2711.dtsi b/arch/arm/boot/dts/bcm2711.dtsi
index afe0ef8..55022fc 100644
--- a/arch/arm/boot/dts/bcm2711.dtsi
+++ b/arch/arm/boot/dts/bcm2711.dtsi
@@ -532,8 +532,8 @@
 				compatible = "brcm,genet-mdio-v5";
 				reg = <0xe14 0x8>;
 				reg-names = "mdio";
-				#address-cells = <0x0>;
-				#size-cells = <0x1>;
+				#address-cells = <0x1>;
+				#size-cells = <0x0>;
 			};
 		};
 	};
-- 
2.7.4


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[PATCH 3/9] ARM: dts: bcm2711-rpi-4-b: fix sd_io_1v8_reg regulator states

[Stefan Wahren]

DT schema check complains at sd_io_1v8_reg about the following:

 [1800000, 1, 3300000, 0] is too long
 Additional items are not allowed (3300000, 0 were unexpected)

So fix the states definition.

Fixes: 7dbe8c62ceeb ("ARM: dts: Add minimal Raspberry Pi 4 support")
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
---
 arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
index f24bdd0..abf8298 100644
--- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
+++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
@@ -40,8 +40,8 @@
 		regulator-always-on;
 		regulator-settling-time-us = <5000>;
 		gpios = <&expgpio 4 GPIO_ACTIVE_HIGH>;
-		states = <1800000 0x1
-			  3300000 0x0>;
+		states = <1800000 0x1>,
+			 <3300000 0x0>;
 		status = "okay";
 	};
 
-- 
2.7.4


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[PATCH 4/9] dt-bindings: display: bcm2835: add optional property power-domains

[Stefan Wahren]

The Raspberry Pi boards with BCM283x needs control of the power domains
to get display components running. So add this as an optional property
in order to avoid such DT schema warnings:

hdmi@7e902000: 'power-domains' does not match any of the regexes: ...

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
---
 Documentation/devicetree/bindings/display/brcm,bcm2835-dsi0.yaml | 3 +++
 Documentation/devicetree/bindings/display/brcm,bcm2835-hdmi.yaml | 3 +++
 Documentation/devicetree/bindings/display/brcm,bcm2835-v3d.yaml  | 3 +++
 Documentation/devicetree/bindings/display/brcm,bcm2835-vec.yaml  | 3 +++
 4 files changed, 12 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/brcm,bcm2835-dsi0.yaml b/Documentation/devicetree/bindings/display/brcm,bcm2835-dsi0.yaml
index 3260857..c8b2459 100644
--- a/Documentation/devicetree/bindings/display/brcm,bcm2835-dsi0.yaml
+++ b/Documentation/devicetree/bindings/display/brcm,bcm2835-dsi0.yaml
@@ -47,6 +47,9 @@ properties:
   interrupts:
     maxItems: 1
 
+  power-domains:
+    maxItems: 1
+
 required:
   - "#clock-cells"
   - compatible
diff --git a/Documentation/devicetree/bindings/display/brcm,bcm2835-hdmi.yaml b/Documentation/devicetree/bindings/display/brcm,bcm2835-hdmi.yaml
index 031e35e..48c8cad 100644
--- a/Documentation/devicetree/bindings/display/brcm,bcm2835-hdmi.yaml
+++ b/Documentation/devicetree/bindings/display/brcm,bcm2835-hdmi.yaml
@@ -51,6 +51,9 @@ properties:
   dma-names:
     const: audio-rx
 
+  power-domains:
+    maxItems: 1
+
 required:
   - compatible
   - reg
diff --git a/Documentation/devicetree/bindings/display/brcm,bcm2835-v3d.yaml b/Documentation/devicetree/bindings/display/brcm,bcm2835-v3d.yaml
index 8a73780..c55a821 100644
--- a/Documentation/devicetree/bindings/display/brcm,bcm2835-v3d.yaml
+++ b/Documentation/devicetree/bindings/display/brcm,bcm2835-v3d.yaml
@@ -24,6 +24,9 @@ properties:
   interrupts:
     maxItems: 1
 
+  power-domains:
+    maxItems: 1
+
 required:
   - compatible
   - reg
diff --git a/Documentation/devicetree/bindings/display/brcm,bcm2835-vec.yaml b/Documentation/devicetree/bindings/display/brcm,bcm2835-vec.yaml
index 9b24081..5d921e3 100644
--- a/Documentation/devicetree/bindings/display/brcm,bcm2835-vec.yaml
+++ b/Documentation/devicetree/bindings/display/brcm,bcm2835-vec.yaml
@@ -24,6 +24,9 @@ properties:
   interrupts:
     maxItems: 1
 
+  power-domains:
+    maxItems: 1
+
 required:
   - compatible
   - reg
-- 
2.7.4


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[PATCH 5/9] ARM: dts: bcm283x-rpi: Move Wifi/BT into separate dtsi

[Stefan Wahren]

A Wifi/BT chip is quite common for the Raspberry Pi boards. So move those
definitions into a separate dtsi in order to avoid copy & paste. This
change was inspired by a vendor tree patch from Phil Elwell.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
---
 arch/arm/boot/dts/bcm2711-rpi-4-b.dts      | 38 +++++++-----------------------
 arch/arm/boot/dts/bcm2835-rpi-zero-w.dts   | 31 +++++++-----------------
 arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts | 36 ++++++----------------------
 arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts | 36 +++++++---------------------
 arch/arm/boot/dts/bcm2837-rpi-3-b.dts      | 36 +++++++---------------------
 arch/arm/boot/dts/bcm283x-rpi-wifi-bt.dtsi | 34 ++++++++++++++++++++++++++
 6 files changed, 74 insertions(+), 137 deletions(-)
 create mode 100644 arch/arm/boot/dts/bcm283x-rpi-wifi-bt.dtsi

diff --git a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
index abf8298..c54ba5cf 100644
--- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
+++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
@@ -3,6 +3,7 @@
 #include "bcm2711.dtsi"
 #include "bcm2711-rpi.dtsi"
 #include "bcm283x-rpi-usb-peripheral.dtsi"
+#include "bcm283x-rpi-wifi-bt.dtsi"
 
 / {
 	compatible = "raspberrypi,4-model-b", "brcm,bcm2711";
@@ -26,11 +27,6 @@
 		};
 	};
 
-	wifi_pwrseq: wifi-pwrseq {
-		compatible = "mmc-pwrseq-simple";
-		reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
-	};
-
 	sd_io_1v8_reg: sd_io_1v8_reg {
 		compatible = "regulator-gpio";
 		regulator-name = "vdd-sd-io";
@@ -56,6 +52,10 @@
 	};
 };
 
+&bt {
+	shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
+};
+
 &ddc0 {
 	status = "okay";
 };
@@ -178,23 +178,6 @@
 	status = "okay";
 };
 
-/* SDHCI is used to control the SDIO for wireless */
-&sdhci {
-	#address-cells = <1>;
-	#size-cells = <0>;
-	pinctrl-names = "default";
-	pinctrl-0 = <&emmc_gpio34>;
-	bus-width = <4>;
-	non-removable;
-	mmc-pwrseq = <&wifi_pwrseq>;
-	status = "okay";
-
-	brcmf: wifi@1 {
-		reg = <1>;
-		compatible = "brcm,bcm4329-fmac";
-	};
-};
-
 /* EMMC2 is used to drive the SD card */
 &emmc2 {
 	vqmmc-supply = <&sd_io_1v8_reg>;
@@ -236,13 +219,6 @@
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart0_ctsrts_gpio30 &uart0_gpio32>;
 	uart-has-rtscts;
-	status = "okay";
-
-	bluetooth {
-		compatible = "brcm,bcm43438-bt";
-		max-speed = <2000000>;
-		shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
-	};
 };
 
 /* uart1 is mapped to the pin header */
@@ -259,3 +235,7 @@
 &vec {
 	status = "disabled";
 };
+
+&wifi_pwrseq {
+	reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
+};
diff --git a/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts b/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts
index 33b2b77..243236b 100644
--- a/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts
+++ b/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts
@@ -7,6 +7,7 @@
 #include "bcm2835.dtsi"
 #include "bcm2835-rpi.dtsi"
 #include "bcm283x-rpi-usb-otg.dtsi"
+#include "bcm283x-rpi-wifi-bt.dtsi"
 
 / {
 	compatible = "raspberrypi,model-zero-w", "brcm,bcm2835";
@@ -27,11 +28,10 @@
 			gpios = <&gpio 47 GPIO_ACTIVE_LOW>;
 		};
 	};
+};
 
-	wifi_pwrseq: wifi-pwrseq {
-		compatible = "mmc-pwrseq-simple";
-		reset-gpios = <&gpio 41 GPIO_ACTIVE_LOW>;
-	};
+&bt {
+	shutdown-gpios = <&gpio 45 GPIO_ACTIVE_HIGH>;
 };
 
 &gpio {
@@ -110,19 +110,7 @@
 };
 
 &sdhci {
-	#address-cells = <1>;
-	#size-cells = <0>;
-	pinctrl-names = "default";
 	pinctrl-0 = <&emmc_gpio34 &gpclk2_gpio43>;
-	bus-width = <4>;
-	mmc-pwrseq = <&wifi_pwrseq>;
-	non-removable;
-	status = "okay";
-
-	brcmf: wifi@1 {
-		reg = <1>;
-		compatible = "brcm,bcm4329-fmac";
-	};
 };
 
 &sdhost {
@@ -135,13 +123,6 @@
 &uart0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart0_gpio32 &uart0_ctsrts_gpio30>;
-	status = "okay";
-
-	bluetooth {
-		compatible = "brcm,bcm43438-bt";
-		max-speed = <2000000>;
-		shutdown-gpios = <&gpio 45 GPIO_ACTIVE_HIGH>;
-	};
 };
 
 &uart1 {
@@ -149,3 +130,7 @@
 	pinctrl-0 = <&uart1_gpio14>;
 	status = "okay";
 };
+
+&wifi_pwrseq {
+	reset-gpios = <&gpio 41 GPIO_ACTIVE_LOW>;
+};
diff --git a/arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts b/arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts
index 77099a7..d73daf5 100644
--- a/arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts
+++ b/arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts
@@ -3,6 +3,7 @@
 #include "bcm2837.dtsi"
 #include "bcm2836-rpi.dtsi"
 #include "bcm283x-rpi-usb-host.dtsi"
+#include "bcm283x-rpi-wifi-bt.dtsi"
 
 / {
 	compatible = "raspberrypi,3-model-a-plus", "brcm,bcm2837";
@@ -130,28 +131,6 @@
 	status = "okay";
 };
 
-/*
- * SDHCI is used to control the SDIO for wireless
- *
- * WL_REG_ON and BT_REG_ON of the CYW43455 Wifi/BT module are driven
- * by a single GPIO. We can't give GPIO control to one of the drivers,
- * otherwise the other part would get unexpectedly disturbed.
- */
-&sdhci {
-	#address-cells = <1>;
-	#size-cells = <0>;
-	pinctrl-names = "default";
-	pinctrl-0 = <&emmc_gpio34>;
-	status = "okay";
-	bus-width = <4>;
-	non-removable;
-
-	brcmf: wifi@1 {
-		reg = <1>;
-		compatible = "brcm,bcm4329-fmac";
-	};
-};
-
 /* SDHOST is used to drive the SD card */
 &sdhost {
 	pinctrl-names = "default";
@@ -160,16 +139,15 @@
 	bus-width = <4>;
 };
 
-/* uart0 communicates with the BT module */
+/* uart0 communicates with the BT module
+ *
+ * WL_REG_ON and BT_REG_ON of the CYW43455 Wifi/BT module are driven
+ * by a single GPIO. We can't give GPIO control to one of the drivers,
+ * otherwise the other part would get unexpectedly disturbed.
+ */
 &uart0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart0_ctsrts_gpio30 &uart0_gpio32 &gpclk2_gpio43>;
-	status = "okay";
-
-	bluetooth {
-		compatible = "brcm,bcm43438-bt";
-		max-speed = <2000000>;
-	};
 };
 
 /* uart1 is mapped to the pin header */
diff --git a/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts b/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts
index 6101026..e12938b 100644
--- a/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts
+++ b/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts
@@ -4,6 +4,7 @@
 #include "bcm2836-rpi.dtsi"
 #include "bcm283x-rpi-lan7515.dtsi"
 #include "bcm283x-rpi-usb-host.dtsi"
+#include "bcm283x-rpi-wifi-bt.dtsi"
 
 / {
 	compatible = "raspberrypi,3-model-b-plus", "brcm,bcm2837";
@@ -31,11 +32,10 @@
 			linux,default-trigger = "default-on";
 		};
 	};
+};
 
-	wifi_pwrseq: wifi-pwrseq {
-		compatible = "mmc-pwrseq-simple";
-		reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
-	};
+&bt {
+	shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
 };
 
 &firmware {
@@ -137,23 +137,6 @@
 	status = "okay";
 };
 
-/* SDHCI is used to control the SDIO for wireless */
-&sdhci {
-	#address-cells = <1>;
-	#size-cells = <0>;
-	pinctrl-names = "default";
-	pinctrl-0 = <&emmc_gpio34>;
-	status = "okay";
-	bus-width = <4>;
-	non-removable;
-	mmc-pwrseq = <&wifi_pwrseq>;
-
-	brcmf: wifi@1 {
-		reg = <1>;
-		compatible = "brcm,bcm4329-fmac";
-	};
-};
-
 /* SDHOST is used to drive the SD card */
 &sdhost {
 	pinctrl-names = "default";
@@ -166,13 +149,6 @@
 &uart0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart0_ctsrts_gpio30 &uart0_gpio32 &gpclk2_gpio43>;
-	status = "okay";
-
-	bluetooth {
-		compatible = "brcm,bcm43438-bt";
-		max-speed = <2000000>;
-		shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
-	};
 };
 
 /* uart1 is mapped to the pin header */
@@ -181,3 +157,7 @@
 	pinctrl-0 = <&uart1_gpio14>;
 	status = "okay";
 };
+
+&wifi_pwrseq {
+	reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
+};
diff --git a/arch/arm/boot/dts/bcm2837-rpi-3-b.dts b/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
index dd4a486..42b5383 100644
--- a/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
+++ b/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
@@ -4,6 +4,7 @@
 #include "bcm2836-rpi.dtsi"
 #include "bcm283x-rpi-smsc9514.dtsi"
 #include "bcm283x-rpi-usb-host.dtsi"
+#include "bcm283x-rpi-wifi-bt.dtsi"
 
 / {
 	compatible = "raspberrypi,3-model-b", "brcm,bcm2837";
@@ -24,11 +25,10 @@
 			gpios = <&expgpio 2 GPIO_ACTIVE_HIGH>;
 		};
 	};
+};
 
-	wifi_pwrseq: wifi-pwrseq {
-		compatible = "mmc-pwrseq-simple";
-		reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
-	};
+&bt {
+	shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
 };
 
 &firmware {
@@ -134,13 +134,6 @@
 &uart0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart0_gpio32 &gpclk2_gpio43>;
-	status = "okay";
-
-	bluetooth {
-		compatible = "brcm,bcm43438-bt";
-		max-speed = <2000000>;
-		shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
-	};
 };
 
 /* uart1 is mapped to the pin header */
@@ -150,23 +143,6 @@
 	status = "okay";
 };
 
-/* SDHCI is used to control the SDIO for wireless */
-&sdhci {
-	#address-cells = <1>;
-	#size-cells = <0>;
-	pinctrl-names = "default";
-	pinctrl-0 = <&emmc_gpio34>;
-	status = "okay";
-	bus-width = <4>;
-	non-removable;
-	mmc-pwrseq = <&wifi_pwrseq>;
-
-	brcmf: wifi@1 {
-		reg = <1>;
-		compatible = "brcm,bcm4329-fmac";
-	};
-};
-
 /* SDHOST is used to drive the SD card */
 &sdhost {
 	pinctrl-names = "default";
@@ -174,3 +150,7 @@
 	status = "okay";
 	bus-width = <4>;
 };
+
+&wifi_pwrseq {
+	reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
+};
diff --git a/arch/arm/boot/dts/bcm283x-rpi-wifi-bt.dtsi b/arch/arm/boot/dts/bcm283x-rpi-wifi-bt.dtsi
new file mode 100644
index 0000000..0b64cc1
--- /dev/null
+++ b/arch/arm/boot/dts/bcm283x-rpi-wifi-bt.dtsi
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/ {
+	wifi_pwrseq: wifi-pwrseq {
+		compatible = "mmc-pwrseq-simple";
+	};
+};
+
+/* SDHCI is used to control the SDIO for wireless */
+&sdhci {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&emmc_gpio34>;
+	bus-width = <4>;
+	non-removable;
+	mmc-pwrseq = <&wifi_pwrseq>;
+	status = "okay";
+
+	brcmf: wifi@1 {
+		reg = <1>;
+		compatible = "brcm,bcm4329-fmac";
+	};
+};
+
+/* uart0 communicates with the BT module */
+&uart0 {
+	status = "okay";
+
+	bt: bluetooth {
+		compatible = "brcm,bcm43438-bt";
+		max-speed = <2000000>;
+	};
+};
-- 
2.7.4


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[PATCH 6/9] dt-bindings: arm: bcm2835: Add Raspberry Pi Compute Module 4

[Stefan Wahren]

Add the Raspberry Pi Compute Module 4 to DT schema.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
---
 Documentation/devicetree/bindings/arm/bcm/bcm2835.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/arm/bcm/bcm2835.yaml b/Documentation/devicetree/bindings/arm/bcm/bcm2835.yaml
index 230b80d..5dc4824 100644
--- a/Documentation/devicetree/bindings/arm/bcm/bcm2835.yaml
+++ b/Documentation/devicetree/bindings/arm/bcm/bcm2835.yaml
@@ -19,6 +19,7 @@ properties:
         items:
           - enum:
               - raspberrypi,400
+              - raspberrypi,4-compute-module
               - raspberrypi,4-model-b
           - const: brcm,bcm2711
 
-- 
2.7.4


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[PATCH 7/9] ARM: dts: Add Raspberry Pi Compute Module 4

[Stefan Wahren]

The Raspberry Pi Compute Module 4 (CM4) are SoMs which contain the
following:
  * BCM2711 quad core processor
  * up to 8 GB RAM
  * up to 32 GB eMMC
  * a GPIO expander
  * Gigabit PHY BCM54210PE
  * Wifi/BT module with internal and external antenna

The eMMC and the Wifi/BT module are optional.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
---
 arch/arm/boot/dts/bcm2711-rpi-cm4.dtsi | 112 +++++++++++++++++++++++++++++++++
 1 file changed, 112 insertions(+)
 create mode 100644 arch/arm/boot/dts/bcm2711-rpi-cm4.dtsi

diff --git a/arch/arm/boot/dts/bcm2711-rpi-cm4.dtsi b/arch/arm/boot/dts/bcm2711-rpi-cm4.dtsi
new file mode 100644
index 0000000..2fa8704
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2711-rpi-cm4.dtsi
@@ -0,0 +1,112 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+#include "bcm2711.dtsi"
+#include "bcm2711-rpi.dtsi"
+#include "bcm283x-rpi-wifi-bt.dtsi"
+
+/ {
+	compatible = "raspberrypi,4-compute-module", "brcm,bcm2711";
+
+	chosen {
+		/* 8250 auxiliary UART instead of pl011 */
+		stdout-path = "serial1:115200n8";
+	};
+
+	sd_io_1v8_reg: sd_io_1v8_reg {
+		compatible = "regulator-gpio";
+		regulator-name = "vdd-sd-io";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+		regulator-always-on;
+		regulator-settling-time-us = <5000>;
+		gpios = <&expgpio 4 GPIO_ACTIVE_HIGH>;
+		states = <1800000 0x1>,
+			 <3300000 0x0>;
+		status = "okay";
+	};
+
+	sd_vcc_reg: sd_vcc_reg {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc-sd";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+		enable-active-high;
+		gpio = <&expgpio 6 GPIO_ACTIVE_HIGH>;
+	};
+};
+
+&bt {
+	shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
+};
+
+/*
+ * EMMC2 is used to drive the eMMC
+ * Unfortunately the IP block seems to be limited to 100 MHz
+ */
+&emmc2 {
+	bus-width = <8>;
+	vqmmc-supply = <&sd_io_1v8_reg>;
+	vmmc-supply = <&sd_vcc_reg>;
+	broken-cd;
+	status = "okay";
+};
+
+&expgpio {
+	gpio-line-names = "BT_ON",
+			  "WL_ON",
+			  "PWR_LED_OFF",
+			  "ANT1",
+			  "VDD_SD_IO_SEL",
+			  "CAM_GPIO",
+			  "SD_PWR_ON",
+			  "ANT2";
+
+	ant1: ant1-hog {
+		/* internal antenna enabled */
+		gpio-hog;
+		gpios = <3 GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "ant1";
+	};
+
+	ant2: ant2-hog {
+		/* external antenna disabled */
+		gpio-hog;
+		gpios = <7 GPIO_ACTIVE_HIGH>;
+		output-low;
+		line-name = "ant2";
+	};
+};
+
+&genet {
+	phy-handle = <&phy1>;
+	phy-mode = "rgmii-rxid";
+	status = "okay";
+};
+
+&genet_mdio {
+	phy1: ethernet-phy@0 {
+		/* No PHY interrupt */
+		reg = <0x0>;
+	};
+};
+
+/* uart0 communicates with the BT module */
+&uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_ctsrts_gpio30 &uart0_gpio32>;
+	uart-has-rtscts;
+};
+
+/* uart1 is mapped to the pin header */
+&uart1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart1_gpio14>;
+	status = "okay";
+};
+
+&wifi_pwrseq {
+	reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
+};
-- 
2.7.4


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[PATCH 8/9] ARM: dts: Add Raspberry Pi Compute Module 4 IO Board

[Stefan Wahren]

This adds the matching carrier for Raspberry Pi Compute Module 4.
Instead of xHCI USB host controller there is just a USB 2.0 interface
connected to the DWC2 controller from the BCM2711. As a result
there is a free PCIe Gen 2 socket. Also there are 2 full-size HDMI 2.0
connectors.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
---
 arch/arm/boot/dts/Makefile               |   1 +
 arch/arm/boot/dts/bcm2711-rpi-cm4-io.dts | 138 +++++++++++++++++++++++++++++++
 2 files changed, 139 insertions(+)
 create mode 100644 arch/arm/boot/dts/bcm2711-rpi-cm4-io.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 863347b..d3f25b9 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -90,6 +90,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += \
 	bcm2837-rpi-cm3-io3.dtb \
 	bcm2711-rpi-400.dtb \
 	bcm2711-rpi-4-b.dtb \
+	bcm2711-rpi-cm4-io.dtb \
 	bcm2835-rpi-zero.dtb \
 	bcm2835-rpi-zero-w.dtb
 dtb-$(CONFIG_ARCH_BCM_5301X) += \
diff --git a/arch/arm/boot/dts/bcm2711-rpi-cm4-io.dts b/arch/arm/boot/dts/bcm2711-rpi-cm4-io.dts
new file mode 100644
index 0000000..19600b6
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2711-rpi-cm4-io.dts
@@ -0,0 +1,138 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+#include "bcm2711-rpi-cm4.dtsi"
+#include "bcm283x-rpi-usb-host.dtsi"
+
+/ {
+	model = "Raspberry Pi Compute Module 4 IO Board";
+
+	leds {
+		led-act {
+			gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-pwr {
+			label = "PWR";
+			gpios = <&expgpio 2 GPIO_ACTIVE_LOW>;
+			default-state = "keep";
+			linux,default-trigger = "default-on";
+		};
+	};
+};
+
+&ddc0 {
+	status = "okay";
+};
+
+&ddc1 {
+	status = "okay";
+};
+
+&gpio {
+	/*
+	 * Parts taken from rpi_SCH_4b_4p0_reduced.pdf and
+	 * the official GPU firmware DT blob.
+	 *
+	 * Legend:
+	 * "FOO" = GPIO line named "FOO" on the schematic
+	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
+	 */
+	gpio-line-names = "ID_SDA",
+			  "ID_SCL",
+			  "SDA1",
+			  "SCL1",
+			  "GPIO_GCLK",
+			  "GPIO5",
+			  "GPIO6",
+			  "SPI_CE1_N",
+			  "SPI_CE0_N",
+			  "SPI_MISO",
+			  "SPI_MOSI",
+			  "SPI_SCLK",
+			  "GPIO12",
+			  "GPIO13",
+			  /* Serial port */
+			  "TXD1",
+			  "RXD1",
+			  "GPIO16",
+			  "GPIO17",
+			  "GPIO18",
+			  "GPIO19",
+			  "GPIO20",
+			  "GPIO21",
+			  "GPIO22",
+			  "GPIO23",
+			  "GPIO24",
+			  "GPIO25",
+			  "GPIO26",
+			  "GPIO27",
+			  "RGMII_MDIO",
+			  "RGMIO_MDC",
+			  /* Used by BT module */
+			  "CTS0",
+			  "RTS0",
+			  "TXD0",
+			  "RXD0",
+			  /* Used by Wifi */
+			  "SD1_CLK",
+			  "SD1_CMD",
+			  "SD1_DATA0",
+			  "SD1_DATA1",
+			  "SD1_DATA2",
+			  "SD1_DATA3",
+			  /* Shared with SPI flash */
+			  "PWM0_MISO",
+			  "PWM1_MOSI",
+			  "STATUS_LED_G_CLK",
+			  "SPIFLASH_CE_N",
+			  "SDA0",
+			  "SCL0",
+			  "RGMII_RXCLK",
+			  "RGMII_RXCTL",
+			  "RGMII_RXD0",
+			  "RGMII_RXD1",
+			  "RGMII_RXD2",
+			  "RGMII_RXD3",
+			  "RGMII_TXCLK",
+			  "RGMII_TXCTL",
+			  "RGMII_TXD0",
+			  "RGMII_TXD1",
+			  "RGMII_TXD2",
+			  "RGMII_TXD3";
+};
+
+&hdmi0 {
+	status = "okay";
+};
+
+&hdmi1 {
+	status = "okay";
+};
+
+&genet {
+	status = "okay";
+};
+
+&pixelvalve0 {
+	status = "okay";
+};
+
+&pixelvalve1 {
+	status = "okay";
+};
+
+&pixelvalve2 {
+	status = "okay";
+};
+
+&pixelvalve4 {
+	status = "okay";
+};
+
+&vc4 {
+	status = "okay";
+};
+
+&vec {
+	status = "disabled";
+};
-- 
2.7.4


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[PATCH 9/9] arm64: dts: broadcom: Add reference to RPi CM4 IO Board

[Stefan Wahren]

This adds a reference to the dts of the Raspberry Pi Compute Module 4
IO Board, so we don't need to maintain the content in arm64.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
---
 arch/arm64/boot/dts/broadcom/Makefile               | 1 +
 arch/arm64/boot/dts/broadcom/bcm2711-rpi-cm4-io.dts | 2 ++
 2 files changed, 3 insertions(+)
 create mode 100644 arch/arm64/boot/dts/broadcom/bcm2711-rpi-cm4-io.dts

diff --git a/arch/arm64/boot/dts/broadcom/Makefile b/arch/arm64/boot/dts/broadcom/Makefile
index 11eae3e..c688203 100644
--- a/arch/arm64/boot/dts/broadcom/Makefile
+++ b/arch/arm64/boot/dts/broadcom/Makefile
@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 dtb-$(CONFIG_ARCH_BCM2835) += bcm2711-rpi-400.dtb \
 			      bcm2711-rpi-4-b.dtb \
+			      bcm2711-rpi-cm4-io.dtb \
 			      bcm2837-rpi-3-a-plus.dtb \
 			      bcm2837-rpi-3-b.dtb \
 			      bcm2837-rpi-3-b-plus.dtb \
diff --git a/arch/arm64/boot/dts/broadcom/bcm2711-rpi-cm4-io.dts b/arch/arm64/boot/dts/broadcom/bcm2711-rpi-cm4-io.dts
new file mode 100644
index 0000000..e36d395
--- /dev/null
+++ b/arch/arm64/boot/dts/broadcom/bcm2711-rpi-cm4-io.dts
@@ -0,0 +1,2 @@
+// SPDX-License-Identifier: GPL-2.0
+#include "arm/bcm2711-rpi-cm4-io.dts"
-- 
2.7.4


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Re: [PATCH 1/9] ARM: dts: bcm2711: fix emmc2bus node name

[Marc Zyngier]

On 2021-08-01 13:28, Stefan Wahren wrote:
> Fix the node name to get the rid of the following DT schema warning:
> 'emmc2bus' does not match '^([a-z][a-z0-9\\-]+-bus|bus|soc|axi|ahb|apb)
> (@[0-9a-f]+)?$'
> 
> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
> ---
>  arch/arm/boot/dts/bcm2711.dtsi | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm/boot/dts/bcm2711.dtsi 
> b/arch/arm/boot/dts/bcm2711.dtsi
> index b8a4096..afe0ef8 100644
> --- a/arch/arm/boot/dts/bcm2711.dtsi
> +++ b/arch/arm/boot/dts/bcm2711.dtsi
> @@ -405,7 +405,7 @@
>  	 * The firmware will find whether the emmc2bus alias is defined, and 
> if
>  	 * so, it'll edit the dma-ranges property below accordingly.
>  	 */
> -	emmc2bus: emmc2bus {
> +	emmc2bus: emmc2-bus {

There was a recent breakage on rk3399 because of a similar change.

This is a userspace visible change (it affects the sysfs paths),
which will break people's scripts. It would be a lot better to
add an annotation to the DT to acknowledge the issue and keep
the checker quiet.

         M.
-- 
Jazz is not dead. It just smells funny...

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Re: [PATCH 2/9] ARM: dts: bcm2711: fix MDIO #address- and #size-cells

[Florian Fainelli]

On 8/1/2021 5:28 AM, Stefan Wahren wrote:
> The values of #address-cells and #size-cells are swapped. Fix this
> and avoid the following DT schema warnings for mdio@e14:
> 
>   #address-cells:0:0: 1 was expected
>   #size-cells:0:0: 0 was expected
> 
> Fixes: be8af7a9e3cc ("ARM: dts: bcm2711-rpi-4: Enable GENET support")
> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>

Yes this was definitively an error thanks!

> ---
>   arch/arm/boot/dts/bcm2711.dtsi | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/bcm2711.dtsi b/arch/arm/boot/dts/bcm2711.dtsi
> index afe0ef8..55022fc 100644
> --- a/arch/arm/boot/dts/bcm2711.dtsi
> +++ b/arch/arm/boot/dts/bcm2711.dtsi
> @@ -532,8 +532,8 @@
>   				compatible = "brcm,genet-mdio-v5";
>   				reg = <0xe14 0x8>;
>   				reg-names = "mdio";
> -				#address-cells = <0x0>;
> -				#size-cells = <0x1>;
> +				#address-cells = <0x1>;
> +				#size-cells = <0x0>;
>   			};
>   		};
>   	};
> 

-- 
Florian

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Re: [PATCH 4/9] dt-bindings: display: bcm2835: add optional property power-domains

[Rob Herring]

On Sun, Aug 01, 2021 at 02:28:47PM +0200, Stefan Wahren wrote:
> The Raspberry Pi boards with BCM283x needs control of the power domains
> to get display components running. So add this as an optional property
> in order to avoid such DT schema warnings:
> 
> hdmi@7e902000: 'power-domains' does not match any of the regexes: ...

You're adding it because it is in use but failed to be documented, not 
to avoid warnings. The warning is just the symptom of that.

> 
> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
> ---
>  Documentation/devicetree/bindings/display/brcm,bcm2835-dsi0.yaml | 3 +++
>  Documentation/devicetree/bindings/display/brcm,bcm2835-hdmi.yaml | 3 +++
>  Documentation/devicetree/bindings/display/brcm,bcm2835-v3d.yaml  | 3 +++
>  Documentation/devicetree/bindings/display/brcm,bcm2835-vec.yaml  | 3 +++
>  4 files changed, 12 insertions(+)

In any case,

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

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Re: [PATCH 6/9] dt-bindings: arm: bcm2835: Add Raspberry Pi Compute Module 4

[Rob Herring]

On Sun, 01 Aug 2021 14:28:49 +0200, Stefan Wahren wrote:
> Add the Raspberry Pi Compute Module 4 to DT schema.
> 
> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
> ---
>  Documentation/devicetree/bindings/arm/bcm/bcm2835.yaml | 1 +
>  1 file changed, 1 insertion(+)
> 

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

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