[PATCH 0/4] imx8mm-venice: add dt overlays

[PATCH 0/4] imx8mm-venice: add dt overlays

[Tim Harvey]

Combined several overlay patches into a single series.

Tim Harvey (4):
  arm64: dts: imx8mm-venice-gw73xx-0x: add dt overlays for serial modes
  arm64: dts: imx8mm-venice-gw72xx-0x: add dt overlays for serial modes
  arm64: dts: imx8mm-venice-gw73xx-0x: add dt overlay for imx219 rpi v2
    camera
  arm64: dts: imx8mm-venice-gw72xx-0x: add dt overlay for imx219 rpi v2
    camera

 arch/arm64/boot/dts/freescale/Makefile        | 18 ++++
 .../imx8mm-venice-gw72xx-0x-imx219.dts        | 93 +++++++++++++++++++
 .../imx8mm-venice-gw72xx-0x-rs232-rts.dts     | 53 +++++++++++
 .../imx8mm-venice-gw72xx-0x-rs422.dts         | 61 ++++++++++++
 .../imx8mm-venice-gw72xx-0x-rs485.dts         | 61 ++++++++++++
 .../imx8mm-venice-gw73xx-0x-imx219.dts        | 93 +++++++++++++++++++
 .../imx8mm-venice-gw73xx-0x-rs232-rts.dts     | 53 +++++++++++
 .../imx8mm-venice-gw73xx-0x-rs422.dts         | 61 ++++++++++++
 .../imx8mm-venice-gw73xx-0x-rs485.dts         | 61 ++++++++++++
 9 files changed, 554 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx-0x-imx219.dts
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx-0x-rs232-rts.dts
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx-0x-rs422.dts
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx-0x-rs485.dts
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-imx219.dts
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-rs232-rts.dts
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-rs422.dts
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-rs485.dts

-- 
2.17.1

[PATCH 1/4] arm64: dts: imx8mm-venice-gw73xx-0x: add dt overlays for serial modes

[Tim Harvey]

The imx8mm-venice-gw73xx-0x som+baseboard combination has a multi-protocol
RS-232/RS-485/RS-422 transceiver to an off-board connector which
can be configured in a number of ways via UART and GPIO configuration.

The default configuration per the imx8mm-venice-gw73xx-0x dts is for
UART2 TX/RX and UART4 TX/RX to be available as RS-232:
 J15.1 UART2 TX out
 J15.2 UART2 RX in
 J15.3 UART4 TX out
 J15.4 UART4 RX in
 J15.5 GND

Add dt overlays to allow additional the modes of operation:

rs232-rts (UART2 RS-232 with RTS/CTS hardware flow control)
 J15.1 TX out
 J15.2 RX in
 J15.3 RTS out
 J15.4 CTS in
 J15.5 GND

rs485 (UART2 RS-485 half duplex)
 J15.1 TXRX-
 J15.2 N/C
 J15.3 TXRX+
 J15.4 N/C
 J15.5 GND

rs422 (UART2 RS-422 full duplex)
 J15.1 TX-
 J15.2 RX+
 J15.3 TX+
 J15.4 RX-
 J15.5 GND

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
---
v3: use overlay target for simplicity
v2: fixed typo: s/uast/uart/
---
 arch/arm64/boot/dts/freescale/Makefile        |  8 +++
 .../imx8mm-venice-gw73xx-0x-rs232-rts.dts     | 53 ++++++++++++++++
 .../imx8mm-venice-gw73xx-0x-rs422.dts         | 61 +++++++++++++++++++
 .../imx8mm-venice-gw73xx-0x-rs485.dts         | 61 +++++++++++++++++++
 4 files changed, 183 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-rs232-rts.dts
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-rs422.dts
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-rs485.dts

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 55b47cc11490..ea798b7bb286 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -99,6 +99,14 @@ dtb-$(CONFIG_ARCH_MXC) += imx8qxp-colibri-eval-v3.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8qxp-mek.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8ulp-evk.dtb
 
+imx8mm-venice-gw73xx-0x-rs232-rts-dtbs	:= imx8mm-venice-gw73xx-0x.dtb imx8mm-venice-gw73xx-0x-rs232-rts.dtbo
+imx8mm-venice-gw73xx-0x-rs422-dtbs	:= imx8mm-venice-gw73xx-0x.dtb imx8mm-venice-gw73xx-0x-rs422.dtbo
+imx8mm-venice-gw73xx-0x-rs485-dtbs	:= imx8mm-venice-gw73xx-0x.dtb imx8mm-venice-gw73xx-0x-rs485.dtbo
+
+dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw73xx-0x-rs232-rts.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw73xx-0x-rs422.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw73xx-0x-rs485.dtb
+
 dtb-$(CONFIG_ARCH_S32) += s32g274a-evb.dtb
 dtb-$(CONFIG_ARCH_S32) += s32g274a-rdb2.dtb
 dtb-$(CONFIG_ARCH_S32) += s32v234-evb.dtb
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-rs232-rts.dts b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-rs232-rts.dts
new file mode 100644
index 000000000000..2fa635e1c1a8
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-rs232-rts.dts
@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright 2022 Gateworks Corporation
+ *
+ * GW73xx RS232 with RTS/CTS hardware flow control:
+ *  - GPIO4_0 rs485_en needs to be driven low (in-active)
+ *  - UART4_TX becomes RTS
+ *  - UART4_RX becomes CTS
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+
+#include "imx8mm-pinfunc.h"
+
+/dts-v1/;
+/plugin/;
+
+&{/} {
+	compatible = "gw,imx8mm-gw73xx-0x";
+};
+
+&gpio4 {
+	rs485_en {
+		gpio-hog;
+		gpios = <0 GPIO_ACTIVE_HIGH>;
+		output-low;
+		line-name = "rs485_en";
+	};
+};
+
+&uart2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart2>;
+	rts-gpios = <&gpio5 29 GPIO_ACTIVE_LOW>;
+	cts-gpios = <&gpio5 28 GPIO_ACTIVE_LOW>;
+	uart-has-rtscts;
+	status = "okay";
+};
+
+&uart4 {
+	status = "disabled";
+};
+
+&iomuxc {
+	pinctrl_uart2: uart2grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_UART2_RXD_UART2_DCE_RX     0x140
+			MX8MM_IOMUXC_UART2_TXD_UART2_DCE_TX     0x140
+			MX8MM_IOMUXC_UART4_TXD_GPIO5_IO29	0x140
+			MX8MM_IOMUXC_UART4_RXD_GPIO5_IO28	0x140
+		>;
+	};
+};
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-rs422.dts b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-rs422.dts
new file mode 100644
index 000000000000..3e6404340d52
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-rs422.dts
@@ -0,0 +1,61 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright 2021 Gateworks Corporation
+ *
+ * GW73xx RS422 (RS485 full duplex):
+ *  - GPIO1_0 rs485_term selects on-chip termination
+ *  - GPIO4_0 rs485_en needs to be driven high (active)
+ *  - GPIO4_2 rs485_hd needs to be driven low (in-active)
+ *  - UART4_TX is DE for RS485 transmitter
+ *  - RS485_EN needs to be pulled high
+ *  - RS485_HALF needs to be low
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+
+#include "imx8mm-pinfunc.h"
+
+/dts-v1/;
+/plugin/;
+
+&{/} {
+	compatible = "gw,imx8mm-gw73xx-0x";
+};
+
+&gpio4 {
+	rs485_en {
+		gpio-hog;
+		gpios = <0 GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "rs485_en";
+	};
+
+	rs485_hd {
+		gpio-hog;
+		gpios = <2 GPIO_ACTIVE_HIGH>;
+		output-low;
+		line-name = "rs485_hd";
+	};
+};
+
+&uart2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart2>;
+	rts-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>;
+	linux,rs485-enabled-at-boot-time;
+	status = "okay";
+};
+
+&uart4 {
+	status = "disabled";
+};
+
+&iomuxc {
+	pinctrl_uart2: uart2grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_UART2_RXD_UART2_DCE_RX     0x140
+			MX8MM_IOMUXC_UART2_TXD_UART2_DCE_TX     0x140
+			MX8MM_IOMUXC_UART4_TXD_GPIO5_IO29	0x140
+		>;
+	};
+};
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-rs485.dts b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-rs485.dts
new file mode 100644
index 000000000000..2c71ab9854cb
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-rs485.dts
@@ -0,0 +1,61 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright 2021 Gateworks Corporation
+ *
+ * GW73xx RS485 HD:
+ *  - GPIO1_0 rs485_term selects on-chip termination
+ *  - GPIO4_0 rs485_en needs to be driven high (active)
+ *  - GPIO4_2 rs485_hd needs to be driven high (active)
+ *  - UART4_TX is DE for RS485 transmitter
+ *  - RS485_EN needs to be pulled high
+ *  - RS485_HALF needs to be pulled high
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+
+#include "imx8mm-pinfunc.h"
+
+/dts-v1/;
+/plugin/;
+
+&{/} {
+	compatible = "gw,imx8mm-gw73xx-0x";
+};
+
+&gpio4 {
+	rs485_en {
+		gpio-hog;
+		gpios = <0 GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "rs485_en";
+	};
+
+	rs485_hd {
+		gpio-hog;
+		gpios = <2 GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "rs485_hd";
+	};
+};
+
+&uart2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart2>;
+	rts-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>;
+	linux,rs485-enabled-at-boot-time;
+	status = "okay";
+};
+
+&uart4 {
+	status = "disabled";
+};
+
+&iomuxc {
+	pinctrl_uart2: uart2grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_UART2_RXD_UART2_DCE_RX     0x140
+			MX8MM_IOMUXC_UART2_TXD_UART2_DCE_TX     0x140
+			MX8MM_IOMUXC_UART4_TXD_GPIO5_IO29	0x140
+		>;
+	};
+};
-- 
2.17.1

[PATCH 2/4] arm64: dts: imx8mm-venice-gw72xx-0x: add dt overlays for serial modes

[Tim Harvey]

The imx8mm-venice-gw72xx-0x som+baseboard combination has a multi-protocol
RS-232/RS-485/RS-422 transceiver to an off-board connector which
can be configured in a number of ways via UART and GPIO configuration.

The default configuration per the imx8mm-venice-gw72xx-0x dts is for
UART2 TX/RX and UART4 TX/RX to be available as RS-232:
 J15.1 UART2 TX out
 J15.2 UART2 RX in
 J15.3 UART4 TX out
 J15.4 UART4 RX in
 J15.5 GND

Add dt overlays to allow additional the modes of operation:

rs232-rts (UART2 RS-232 with RTS/CTS hardware flow control)
 J15.1 TX out
 J15.2 RX in
 J15.3 RTS out
 J15.4 CTS in
 J15.5 GND

rs485 (UART2 RS-485 half duplex)
 J15.1 TXRX-
 J15.2 N/C
 J15.3 TXRX+
 J15.4 N/C
 J15.5 GND

rs422 (UART2 RS-422 full duplex)
 J15.1 TX-
 J15.2 RX+
 J15.3 TX+
 J15.4 RX-
 J15.5 GND

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
---
v2: use overlay target for simplicity
---
 arch/arm64/boot/dts/freescale/Makefile        |  6 ++
 .../imx8mm-venice-gw72xx-0x-rs232-rts.dts     | 53 ++++++++++++++++
 .../imx8mm-venice-gw72xx-0x-rs422.dts         | 61 +++++++++++++++++++
 .../imx8mm-venice-gw72xx-0x-rs485.dts         | 61 +++++++++++++++++++
 4 files changed, 181 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx-0x-rs232-rts.dts
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx-0x-rs422.dts
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx-0x-rs485.dts

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index ea798b7bb286..1753f787a609 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -99,10 +99,16 @@ dtb-$(CONFIG_ARCH_MXC) += imx8qxp-colibri-eval-v3.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8qxp-mek.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8ulp-evk.dtb
 
+imx8mm-venice-gw72xx-0x-rs232-rts-dtbs	:= imx8mm-venice-gw72xx-0x.dtb imx8mm-venice-gw72xx-0x-rs232-rts.dtbo
+imx8mm-venice-gw72xx-0x-rs422-dtbs	:= imx8mm-venice-gw72xx-0x.dtb imx8mm-venice-gw72xx-0x-rs422.dtbo
+imx8mm-venice-gw72xx-0x-rs485-dtbs	:= imx8mm-venice-gw72xx-0x.dtb imx8mm-venice-gw72xx-0x-rs485.dtbo
 imx8mm-venice-gw73xx-0x-rs232-rts-dtbs	:= imx8mm-venice-gw73xx-0x.dtb imx8mm-venice-gw73xx-0x-rs232-rts.dtbo
 imx8mm-venice-gw73xx-0x-rs422-dtbs	:= imx8mm-venice-gw73xx-0x.dtb imx8mm-venice-gw73xx-0x-rs422.dtbo
 imx8mm-venice-gw73xx-0x-rs485-dtbs	:= imx8mm-venice-gw73xx-0x.dtb imx8mm-venice-gw73xx-0x-rs485.dtbo
 
+dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw72xx-0x-rs232-rts.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw72xx-0x-rs422.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw72xx-0x-rs485.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw73xx-0x-rs232-rts.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw73xx-0x-rs422.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw73xx-0x-rs485.dtb
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx-0x-rs232-rts.dts b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx-0x-rs232-rts.dts
new file mode 100644
index 000000000000..3ea73a6886ff
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx-0x-rs232-rts.dts
@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright 2022 Gateworks Corporation
+ *
+ * GW72xx RS232 with RTS/CTS hardware flow control:
+ *  - GPIO4_0 rs485_en needs to be driven low (in-active)
+ *  - UART4_TX becomes RTS
+ *  - UART4_RX becomes CTS
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+
+#include "imx8mm-pinfunc.h"
+
+/dts-v1/;
+/plugin/;
+
+&{/} {
+	compatible = "gw,imx8mm-gw72xx-0x";
+};
+
+&gpio4 {
+	rs485_en {
+		gpio-hog;
+		gpios = <0 GPIO_ACTIVE_HIGH>;
+		output-low;
+		line-name = "rs485_en";
+	};
+};
+
+&uart2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart2>;
+	rts-gpios = <&gpio5 29 GPIO_ACTIVE_LOW>;
+	cts-gpios = <&gpio5 28 GPIO_ACTIVE_LOW>;
+	uart-has-rtscts;
+	status = "okay";
+};
+
+&uart4 {
+	status = "disabled";
+};
+
+&iomuxc {
+	pinctrl_uart2: uart2grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_UART2_RXD_UART2_DCE_RX     0x140
+			MX8MM_IOMUXC_UART2_TXD_UART2_DCE_TX     0x140
+			MX8MM_IOMUXC_UART4_TXD_GPIO5_IO29	0x140
+			MX8MM_IOMUXC_UART4_RXD_GPIO5_IO28	0x140
+		>;
+	};
+};
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx-0x-rs422.dts b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx-0x-rs422.dts
new file mode 100644
index 000000000000..c3cd9f2b0db3
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx-0x-rs422.dts
@@ -0,0 +1,61 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright 2022 Gateworks Corporation
+ *
+ * GW72xx RS422 (RS485 full duplex):
+ *  - GPIO1_0 rs485_term selects on-chip termination
+ *  - GPIO4_0 rs485_en needs to be driven high (active)
+ *  - GPIO4_2 rs485_hd needs to be driven low (in-active)
+ *  - UART4_TX is DE for RS485 transmitter
+ *  - RS485_EN needs to be pulled high
+ *  - RS485_HALF needs to be low
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+
+#include "imx8mm-pinfunc.h"
+
+/dts-v1/;
+/plugin/;
+
+&{/} {
+	compatible = "gw,imx8mm-gw72xx-0x";
+};
+
+&gpio4 {
+	rs485_en {
+		gpio-hog;
+		gpios = <0 GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "rs485_en";
+	};
+
+	rs485_hd {
+		gpio-hog;
+		gpios = <2 GPIO_ACTIVE_HIGH>;
+		output-low;
+		line-name = "rs485_hd";
+	};
+};
+
+&uart2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart2>;
+	rts-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>;
+	linux,rs485-enabled-at-boot-time;
+	status = "okay";
+};
+
+&uart4 {
+	status = "disabled";
+};
+
+&iomuxc {
+	pinctrl_uart2: uart2grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_UART2_RXD_UART2_DCE_RX     0x140
+			MX8MM_IOMUXC_UART2_TXD_UART2_DCE_TX     0x140
+			MX8MM_IOMUXC_UART4_TXD_GPIO5_IO29	0x140
+		>;
+	};
+};
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx-0x-rs485.dts b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx-0x-rs485.dts
new file mode 100644
index 000000000000..cc0a287226ab
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx-0x-rs485.dts
@@ -0,0 +1,61 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright 2022 Gateworks Corporation
+ *
+ * GW72xx RS485 HD:
+ *  - GPIO1_0 rs485_term selects on-chip termination
+ *  - GPIO4_0 rs485_en needs to be driven high (active)
+ *  - GPIO4_2 rs485_hd needs to be driven high (active)
+ *  - UART4_TX is DE for RS485 transmitter
+ *  - RS485_EN needs to be pulled high
+ *  - RS485_HALF needs to be pulled high
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+
+#include "imx8mm-pinfunc.h"
+
+/dts-v1/;
+/plugin/;
+
+&{/} {
+	compatible = "gw,imx8mm-gw72xx-0x";
+};
+
+&gpio4 {
+	rs485_en {
+		gpio-hog;
+		gpios = <0 GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "rs485_en";
+	};
+
+	rs485_hd {
+		gpio-hog;
+		gpios = <2 GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "rs485_hd";
+	};
+};
+
+&uart2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart2>;
+	rts-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>;
+	linux,rs485-enabled-at-boot-time;
+	status = "okay";
+};
+
+&uart4 {
+	status = "disabled";
+};
+
+&iomuxc {
+	pinctrl_uart2: uart2grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_UART2_RXD_UART2_DCE_RX     0x140
+			MX8MM_IOMUXC_UART2_TXD_UART2_DCE_TX     0x140
+			MX8MM_IOMUXC_UART4_TXD_GPIO5_IO29	0x140
+		>;
+	};
+};
-- 
2.17.1

[PATCH 3/4] arm64: dts: imx8mm-venice-gw73xx-0x: add dt overlay for imx219 rpi v2 camera

[Tim Harvey]

Add support for the RaspberryPi Camera v2 which is an IMX219 8MP module:
 - https://datasheets.raspberrypi.com/camera/camera-v2-schematics.pdf
 - has its own on-board 24MHz osc so no clock required from baseboard
 - pin 11 enables 1.8V and 2.8V LDO which is connected to
   GW73xx MIPI_GPIO4 (IMX8MM GPIO1_IO1) so we use this as a gpio
   controlled regulator enable.

Support is added via a device-tree overlay.

The IMX219 supports RAW8/RAW10 image formats.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
---
v3: use overlay target for simplicity
v2:
 - added DTC_FLAGS
 - added line between prop and subnode for port@0
 - added mipi_csi/port@1 to fix compiler warning
---
 arch/arm64/boot/dts/freescale/Makefile        |  2 +
 .../imx8mm-venice-gw73xx-0x-imx219.dts        | 93 +++++++++++++++++++
 2 files changed, 95 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-imx219.dts

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 1753f787a609..a84463bea15c 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -102,6 +102,7 @@ dtb-$(CONFIG_ARCH_MXC) += imx8ulp-evk.dtb
 imx8mm-venice-gw72xx-0x-rs232-rts-dtbs	:= imx8mm-venice-gw72xx-0x.dtb imx8mm-venice-gw72xx-0x-rs232-rts.dtbo
 imx8mm-venice-gw72xx-0x-rs422-dtbs	:= imx8mm-venice-gw72xx-0x.dtb imx8mm-venice-gw72xx-0x-rs422.dtbo
 imx8mm-venice-gw72xx-0x-rs485-dtbs	:= imx8mm-venice-gw72xx-0x.dtb imx8mm-venice-gw72xx-0x-rs485.dtbo
+imx8mm-venice-gw73xx-0x-imx219-dtbs	:= imx8mm-venice-gw73xx-0x.dtb imx8mm-venice-gw73xx-0x-imx219.dtbo
 imx8mm-venice-gw73xx-0x-rs232-rts-dtbs	:= imx8mm-venice-gw73xx-0x.dtb imx8mm-venice-gw73xx-0x-rs232-rts.dtbo
 imx8mm-venice-gw73xx-0x-rs422-dtbs	:= imx8mm-venice-gw73xx-0x.dtb imx8mm-venice-gw73xx-0x-rs422.dtbo
 imx8mm-venice-gw73xx-0x-rs485-dtbs	:= imx8mm-venice-gw73xx-0x.dtb imx8mm-venice-gw73xx-0x-rs485.dtbo
@@ -109,6 +110,7 @@ imx8mm-venice-gw73xx-0x-rs485-dtbs	:= imx8mm-venice-gw73xx-0x.dtb imx8mm-venice-
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw72xx-0x-rs232-rts.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw72xx-0x-rs422.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw72xx-0x-rs485.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw73xx-0x-imx219.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw73xx-0x-rs232-rts.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw73xx-0x-rs422.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw73xx-0x-rs485.dtb
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-imx219.dts b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-imx219.dts
new file mode 100644
index 000000000000..f3ece4b7fbbd
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-imx219.dts
@@ -0,0 +1,93 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright 2022 Gateworks Corporation
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+
+#include "imx8mm-pinfunc.h"
+
+/dts-v1/;
+/plugin/;
+
+&{/} {
+	compatible = "gw,imx8mm-gw73xx-0x", "fsl,imx8mm";
+
+	reg_cam: regulator-cam {
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_reg_cam>;
+		compatible = "regulator-fixed";
+		regulator-name = "reg_cam";
+		gpio = <&gpio1 1 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+	};
+
+	cam24m: cam24m {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <24000000>;
+		clock-output-names = "cam24m";
+	};
+};
+
+&csi {
+	status = "okay";
+};
+
+&i2c3 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	imx219: sensor@10 {
+		compatible = "sony,imx219";
+		reg = <0x10>;
+		clocks = <&cam24m>;
+		VDIG-supply = <&reg_cam>;
+
+		port {
+			/* MIPI CSI-2 bus endpoint */
+			imx219_to_mipi_csi2: endpoint {
+				remote-endpoint = <&imx8mm_mipi_csi_in>;
+				clock-lanes = <0>;
+				data-lanes = <1 2>;
+				link-frequencies = /bits/ 64 <456000000>;
+			};
+		};
+	};
+};
+
+&mipi_csi {
+	status = "okay";
+
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		port@0 {
+			reg = <0>;
+
+			imx8mm_mipi_csi_in: endpoint {
+				remote-endpoint = <&imx219_to_mipi_csi2>;
+				data-lanes = <1 2>;
+			};
+		};
+
+		port@1 {
+			reg = <1>;
+
+			imx8mm_mipi_csi_out: endpoint {
+				remote-endpoint = <&csi_in>;
+			};
+		};
+	};
+};
+
+&iomuxc {
+	pinctrl_reg_cam: regcamgrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_GPIO1_IO01_GPIO1_IO1	0x41
+		>;
+	};
+};
-- 
2.17.1

[PATCH 4/4] arm64: dts: imx8mm-venice-gw72xx-0x: add dt overlay for imx219 rpi v2 camera

[Tim Harvey]

Add support for the RaspberryPi Camera v2 which is an IMX219 8MP module:
 - https://datasheets.raspberrypi.com/camera/camera-v2-schematics.pdf
 - has its own on-board 24MHz osc so no clock required from baseboard
 - pin 11 enables 1.8V and 2.8V LDO which is connected to
   GW73xx MIPI_GPIO4 (IMX8MM GPIO1_IO1) so we use this as a gpio

Support is added via a device-tree overlay.

The IMX219 supports RAW8/RAW10 image formats.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
---
v3: use overlay target for simplicity
v2:
 - added DTC_FLAGS
 - add line between prop and subnode of mipi_csi/port@0
 - add mipi_csi/port@1 to fix compile warning
---
 arch/arm64/boot/dts/freescale/Makefile        |  2 +
 .../imx8mm-venice-gw72xx-0x-imx219.dts        | 93 +++++++++++++++++++
 2 files changed, 95 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx-0x-imx219.dts

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index a84463bea15c..7f51b537df40 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -99,6 +99,7 @@ dtb-$(CONFIG_ARCH_MXC) += imx8qxp-colibri-eval-v3.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8qxp-mek.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8ulp-evk.dtb
 
+imx8mm-venice-gw72xx-0x-imx219-dtbs	:= imx8mm-venice-gw73xx-0x.dtb imx8mm-venice-gw73xx-0x-imx219.dtbo
 imx8mm-venice-gw72xx-0x-rs232-rts-dtbs	:= imx8mm-venice-gw72xx-0x.dtb imx8mm-venice-gw72xx-0x-rs232-rts.dtbo
 imx8mm-venice-gw72xx-0x-rs422-dtbs	:= imx8mm-venice-gw72xx-0x.dtb imx8mm-venice-gw72xx-0x-rs422.dtbo
 imx8mm-venice-gw72xx-0x-rs485-dtbs	:= imx8mm-venice-gw72xx-0x.dtb imx8mm-venice-gw72xx-0x-rs485.dtbo
@@ -107,6 +108,7 @@ imx8mm-venice-gw73xx-0x-rs232-rts-dtbs	:= imx8mm-venice-gw73xx-0x.dtb imx8mm-ven
 imx8mm-venice-gw73xx-0x-rs422-dtbs	:= imx8mm-venice-gw73xx-0x.dtb imx8mm-venice-gw73xx-0x-rs422.dtbo
 imx8mm-venice-gw73xx-0x-rs485-dtbs	:= imx8mm-venice-gw73xx-0x.dtb imx8mm-venice-gw73xx-0x-rs485.dtbo
 
+dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw72xx-0x-imx219.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw72xx-0x-rs232-rts.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw72xx-0x-rs422.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw72xx-0x-rs485.dtb
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx-0x-imx219.dts b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx-0x-imx219.dts
new file mode 100644
index 000000000000..4eaf8aabcbff
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx-0x-imx219.dts
@@ -0,0 +1,93 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright 2022 Gateworks Corporation
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+
+#include "imx8mm-pinfunc.h"
+
+/dts-v1/;
+/plugin/;
+
+&{/} {
+	compatible = "gw,imx8mm-gw72xx-0x", "fsl,imx8mm";
+
+	reg_cam: regulator-cam {
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_reg_cam>;
+		compatible = "regulator-fixed";
+		regulator-name = "reg_cam";
+		gpio = <&gpio1 1 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+	};
+
+	cam24m: cam24m {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <24000000>;
+		clock-output-names = "cam24m";
+	};
+};
+
+&csi {
+	status = "okay";
+};
+
+&i2c3 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	imx219: sensor@10 {
+		compatible = "sony,imx219";
+		reg = <0x10>;
+		clocks = <&cam24m>;
+		VDIG-supply = <&reg_cam>;
+
+		port {
+			/* MIPI CSI-2 bus endpoint */
+			imx219_to_mipi_csi2: endpoint {
+				remote-endpoint = <&imx8mm_mipi_csi_in>;
+				clock-lanes = <0>;
+				data-lanes = <1 2>;
+				link-frequencies = /bits/ 64 <456000000>;
+			};
+		};
+	};
+};
+
+&mipi_csi {
+	status = "okay";
+
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		port@0 {
+			reg = <0>;
+
+			imx8mm_mipi_csi_in: endpoint {
+				remote-endpoint = <&imx219_to_mipi_csi2>;
+				data-lanes = <1 2>;
+			};
+		};
+
+		port@1 {
+			reg = <1>;
+
+			imx8mm_mipi_csi_out: endpoint {
+				remote-endpoint = <&csi_in>;
+			};
+		};
+	};
+};
+
+&iomuxc {
+	pinctrl_reg_cam: regcamgrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_GPIO1_IO01_GPIO1_IO1	0x41
+		>;
+	};
+};
-- 
2.17.1

Re: [PATCH 0/4] imx8mm-venice: add dt overlays

[Shawn Guo]

On Mon, Feb 14, 2022 at 03:14:20PM -0800, Tim Harvey wrote:
> Combined several overlay patches into a single series.
> 
> Tim Harvey (4):
>   arm64: dts: imx8mm-venice-gw73xx-0x: add dt overlays for serial modes
>   arm64: dts: imx8mm-venice-gw72xx-0x: add dt overlays for serial modes
>   arm64: dts: imx8mm-venice-gw73xx-0x: add dt overlay for imx219 rpi v2
>     camera
>   arm64: dts: imx8mm-venice-gw72xx-0x: add dt overlay for imx219 rpi v2
>     camera

Applied all, thanks!