[PATCH 14/18] arm64: dts: ti: k3-j722s-evm: Add overlay for J7EXPA01EVM Fusion2
Yemike Abhilash Chandra
y-abhilashchandra at ti.com
Thu Jul 2 02:31:19 PDT 2026
J7EXPA01EVM Fusion2 serial capture expansion board features 3 UB9702
deserializers, each capable of aggregating data from up to 4x cameras
over the FPDLink-IV interface. Add support for the same on J722S-EVM.
EVM schematics and design files : https://www.ti.com/tool/J7EXPA01EVM
Signed-off-by: Yemike Abhilash Chandra <y-abhilashchandra at ti.com>
---
arch/arm64/boot/dts/ti/Makefile | 4 +
.../ti/k3-j722s-evm-fpdlink-iv-fusion.dtso | 296 ++++++++++++++++++
2 files changed, 300 insertions(+)
create mode 100644 arch/arm64/boot/dts/ti/k3-j722s-evm-fpdlink-iv-fusion.dtso
diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index 7da84197402e..0246f582ca00 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -175,6 +175,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-j722s-evm.dtb
dtb-$(CONFIG_ARCH_K3) += k3-j722s-evm-csi2-quad-rpi-cam-imx219.dtbo
dtb-$(CONFIG_ARCH_K3) += k3-j722s-evm-csi2-quad-tevi-ov5640.dtbo
dtb-$(CONFIG_ARCH_K3) += k3-j722s-evm-fpdlink-fusion.dtbo
+dtb-$(CONFIG_ARCH_K3) += k3-j722s-evm-fpdlink-iv-fusion.dtbo
dtb-$(CONFIG_ARCH_K3) += k3-j722s-evm-v3link-fusion.dtbo
# Boards with J784s4 SoC
@@ -313,6 +314,8 @@ k3-j722s-evm-csi2-quad-tevi-ov5640-dtbs := k3-j722s-evm.dtb \
k3-j722s-evm-csi2-quad-tevi-ov5640.dtbo
k3-j722s-evm-fpdlink-fusion-dtbs := k3-j722s-evm.dtb \
k3-j722s-evm-fpdlink-fusion.dtbo
+k3-j722s-evm-fpdlink-iv-fusion-dtbs := k3-j722s-evm.dtb \
+ k3-j722s-evm-fpdlink-iv-fusion.dtbo
k3-j722s-evm-v3link-fusion-dtbs := k3-j722s-evm.dtb \
k3-j722s-evm-v3link-fusion.dtbo
k3-j742s2-evm-usb0-type-a-dtbs := k3-j742s2-evm.dtb \
@@ -391,6 +394,7 @@ dtb- += k3-am625-beagleplay-csi2-ov5640.dtb \
k3-j722s-evm-csi2-quad-rpi-cam-imx219.dtb \
k3-j722s-evm-csi2-quad-tevi-ov5640.dtb \
k3-j722s-evm-fpdlink-fusion.dtb \
+ k3-j722s-evm-fpdlink-iv-fusion.dtb \
k3-j722s-evm-v3link-fusion.dtb \
k3-j742s2-evm-usb0-type-a.dtb \
k3-j784s4-evm-fpdlink-fusion.dtb \
diff --git a/arch/arm64/boot/dts/ti/k3-j722s-evm-fpdlink-iv-fusion.dtso b/arch/arm64/boot/dts/ti/k3-j722s-evm-fpdlink-iv-fusion.dtso
new file mode 100644
index 000000000000..91bf23345b92
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-j722s-evm-fpdlink-iv-fusion.dtso
@@ -0,0 +1,296 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/*
+ * DT Overlay for FPDLink IV UB9702 Deserializer on J722S
+ * https://www.ti.com/tool/J7EXPA01EVM
+ *
+ * Copyright (C) 2025 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include "k3-pinctrl.h"
+
+&{/} {
+ clk_fusion_25M_fixed: fixed-clock-25M {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <25000000>;
+ };
+};
+
+&main_pmx0 {
+ csi_expansion_interface_reset: csi-expansion-interface-reset-pins {
+ pinctrl-single,pins = <
+ J722S_IOPAD(0x114, PIN_OUTPUT, 7) /* (G26) GPIO0_68 */
+ >;
+ };
+};
+
+&main_gpio0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&csi_expansion_interface_reset>;
+
+ line68-hog{
+ gpio-hog;
+ gpios = <68 GPIO_ACTIVE_HIGH>;
+ output-high;
+ line-name = "CSI2_EXP_RSTZ";
+ };
+};
+
+&pca9543_0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ i2c at 0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0>;
+
+ deser at 3d {
+ compatible = "ti,ds90ub9702-q1";
+ reg = <0x3d>;
+ clocks = <&clk_fusion_25M_fixed>;
+ clock-names = "refclk";
+ i2c-alias-pool = <0x4a 0x4b 0x4c 0x4d 0x4e 0x4f>;
+
+ deserializer_0_ports: ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port at 0{
+ reg= <0>;
+ status = "disabled";
+ };
+
+ port at 1{
+ reg= <1>;
+ status = "disabled";
+ };
+
+ port at 2{
+ reg= <2>;
+ status = "disabled";
+ };
+
+ port at 3{
+ reg= <3>;
+ status = "disabled";
+ };
+
+ /* CSI-2 TX */
+ port at 4 {
+ reg = <4>;
+ ds90ub970_0_csi_out: endpoint {
+ clock-lanes = <0>;
+ data-lanes = <1 2 3 4>;
+ link-frequencies = /bits/ 64 <800000000>;
+ remote-endpoint = <&csi2_phy0>;
+ };
+ };
+
+ port at 5{
+ reg= <5>;
+ status = "disabled";
+ };
+ };
+
+ deserializer_0_links: links {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
+ };
+
+ deser at 30 {
+ compatible = "ti,ds90ub9702-q1";
+ reg = <0x30>;
+ clocks = <&clk_fusion_25M_fixed>;
+ clock-names = "refclk";
+ i2c-alias-pool = <0x5a 0x5b 0x5c 0x5d 0x5e 0x5f>;
+
+ deserializer_1_ports: ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port at 0{
+ reg= <0>;
+ status = "disabled";
+ };
+
+ port at 1{
+ reg= <1>;
+ status = "disabled";
+ };
+
+ port at 2{
+ reg= <2>;
+ status = "disabled";
+ };
+
+ port at 3{
+ reg= <3>;
+ status = "disabled";
+ };
+
+ /* CSI-2 TX */
+ port at 4 {
+ reg = <4>;
+ ds90ub970_1_csi_out: endpoint {
+ clock-lanes = <0>;
+ data-lanes = <1 2 3 4>;
+ link-frequencies = /bits/ 64 <800000000>;
+ remote-endpoint = <&csi2_phy1>;
+ };
+ };
+
+ port at 5{
+ reg= <5>;
+ status = "disabled";
+ };
+ };
+
+ deserializer_1_links: links {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
+ };
+
+ deser at 32 {
+ compatible = "ti,ds90ub9702-q1";
+ reg = <0x32>;
+ clocks = <&clk_fusion_25M_fixed>;
+ clock-names = "refclk";
+ i2c-alias-pool = <0x6a 0x6b 0x6c 0x6d 0x6e 0x6f>;
+
+ deserializer_2_ports: ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port at 0{
+ reg= <0>;
+ status = "disabled";
+ };
+
+ port at 1{
+ reg= <1>;
+ status = "disabled";
+ };
+
+ port at 2{
+ reg= <2>;
+ status = "disabled";
+ };
+
+ port at 3{
+ reg= <3>;
+ status = "disabled";
+ };
+
+ /* CSI-2 TX */
+ port at 4 {
+ reg = <4>;
+ ds90ub970_2_csi_out: endpoint {
+ clock-lanes = <0>;
+ data-lanes = <1 2 3 4>;
+ link-frequencies = /bits/ 64 <800000000>;
+ remote-endpoint = <&csi2_phy2>;
+ };
+ };
+
+ port at 5{
+ reg= <5>;
+ status = "disabled";
+ };
+ };
+
+ deserializer_2_links: links {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
+ };
+ };
+};
+
+&cdns_csi2rx0 {
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ csi0_port0: port at 0 {
+ reg = <0>;
+ status = "okay";
+
+ csi2_phy0: endpoint {
+ remote-endpoint = <&ds90ub970_0_csi_out>;
+ clock-lanes = <0>;
+ data-lanes = <1 2 3 4>;
+ link-frequencies = /bits/ 64 <800000000>;
+ };
+ };
+ };
+};
+
+&cdns_csi2rx1 {
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ csi1_port0: port at 0 {
+ reg = <0>;
+ status = "okay";
+
+ csi2_phy1: endpoint {
+ remote-endpoint = <&ds90ub970_1_csi_out>;
+ clock-lanes = <0>;
+ data-lanes = <1 2 3 4>;
+ link-frequencies = /bits/ 64 <800000000>;
+ };
+ };
+ };
+};
+
+&cdns_csi2rx2 {
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ csi2_port0: port at 0 {
+ reg = <0>;
+ status = "okay";
+
+ csi2_phy2: endpoint {
+ remote-endpoint = <&ds90ub970_2_csi_out>;
+ clock-lanes = <0>;
+ data-lanes = <1 2 3 4>;
+ link-frequencies = /bits/ 64 <800000000>;
+ };
+ };
+ };
+};
+
+&ti_csi2rx0 {
+ status = "okay";
+};
+
+&dphy0 {
+ status = "okay";
+};
+
+&ti_csi2rx1 {
+ status = "okay";
+};
+
+&dphy1 {
+ status = "okay";
+};
+
+&ti_csi2rx2 {
+ status = "okay";
+};
+
+&dphy2 {
+ status = "okay";
+};
--
2.34.1
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