[PATCH v1 4/9] ARM: tegra: grouper: Add support for front camera
From: Svyatoslav Ryhel
Date: Mon Apr 06 2026 - 04:34:33 EST
Add front camera video path.
Signed-off-by: Svyatoslav Ryhel <clamor95@xxxxxxxxx>
---
.../tegra30-asus-nexus7-grouper-common.dtsi | 128 ++++++++++++++++++
...egra30-asus-nexus7-grouper-maxim-pmic.dtsi | 4 +-
.../tegra30-asus-nexus7-grouper-ti-pmic.dtsi | 4 +-
3 files changed, 132 insertions(+), 4 deletions(-)
diff --git a/arch/arm/boot/dts/nvidia/tegra30-asus-nexus7-grouper-common.dtsi b/arch/arm/boot/dts/nvidia/tegra30-asus-nexus7-grouper-common.dtsi
index 15f53babdc21..892d718294dd 100644
--- a/arch/arm/boot/dts/nvidia/tegra30-asus-nexus7-grouper-common.dtsi
+++ b/arch/arm/boot/dts/nvidia/tegra30-asus-nexus7-grouper-common.dtsi
@@ -2,6 +2,7 @@
#include <dt-bindings/input/gpio-keys.h>
#include <dt-bindings/input/input.h>
+#include <dt-bindings/media/video-interfaces.h>
#include <dt-bindings/power/summit,smb347-charger.h>
#include <dt-bindings/thermal/thermal.h>
@@ -84,6 +85,93 @@ init-mode-hog {
};
};
+ host1x@50000000 {
+ vi@54080000 {
+ status = "okay";
+
+ csi@800 {
+ status = "okay";
+
+ avdd-dsi-csi-supply = <&avdd_dsi_csi>;
+
+ /* CSI-A */
+ channel@0 {
+ reg = <0>;
+
+ nvidia,mipi-calibrate = <&csi 0>; /* CSIA pad */
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+
+ csia_input: endpoint {
+ data-lanes = <1 2>;
+ /* No rear camera */
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+
+ csia_output: endpoint {
+ remote-endpoint = <&vi_ppa_input>;
+ };
+ };
+ };
+
+ /* CSI-B */
+ channel@1 {
+ reg = <1>;
+
+ nvidia,mipi-calibrate = <&csi 1>; /* CSIB pad */
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+
+ csib_input: endpoint {
+ data-lanes = <3>;
+ remote-endpoint = <&front_camera_output>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+
+ csib_output: endpoint {
+ remote-endpoint = <&vi_ppb_input>;
+ };
+ };
+ };
+ };
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+
+ vi_ppa_input: endpoint {
+ remote-endpoint = <&csia_output>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+
+ vi_ppb_input: endpoint {
+ remote-endpoint = <&csib_output>;
+ };
+ };
+ };
+ };
+ };
+
pinmux@70000868 {
pinctrl-names = "default";
pinctrl-0 = <&state_default>;
@@ -890,6 +978,36 @@ light-sensor@1c {
vdd-supply = <&vdd_3v3_sys>;
};
+ /* Aptina 1/6" HD SOC (MI1040) */
+ front-camera@48 {
+ compatible = "aptina,mi1040";
+ reg = <0x48>;
+
+ clocks = <&tegra_car TEGRA30_CLK_CSUS>;
+
+ reset-gpios = <&gpio TEGRA_GPIO(O, 0) GPIO_ACTIVE_LOW>;
+
+ vddio-supply = <&avdd_cam1>;
+ vdd-supply = <&vddio_cam>;
+ vaa-supply = <&avdd_cam1>;
+
+ orientation = <0>; /* Front camera */
+
+ assigned-clocks = <&tegra_car TEGRA30_CLK_VI_SENSOR>,
+ <&tegra_car TEGRA30_CLK_CSUS>;
+ assigned-clock-rates = <24000000>;
+ assigned-clock-parents = <&tegra_car TEGRA30_CLK_PLL_P>,
+ <&tegra_car TEGRA30_CLK_VI_SENSOR>;
+
+ port {
+ front_camera_output: endpoint {
+ bus-type = <MEDIA_BUS_TYPE_CSI2_DPHY>;
+ link-frequencies = /bits/ 64 <384000000>;
+ remote-endpoint = <&csib_input>;
+ };
+ };
+ };
+
accelerometer@68 {
compatible = "invensense,mpu6050";
reg = <0x68>;
@@ -1203,6 +1321,16 @@ vcc_3v3_ts: regulator-ts {
vin-supply = <&vdd_5v0_sys>;
};
+ avdd_cam1: regulator-vcam1 {
+ compatible = "regulator-fixed";
+ regulator-name = "avdd_cam1";
+ regulator-min-microvolt = <2850000>;
+ regulator-max-microvolt = <2850000>;
+ gpio = <&gpio TEGRA_GPIO(R, 6) GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ vin-supply = <&vdd_5v0_sys>;
+ };
+
sound {
compatible = "nvidia,tegra-audio-rt5640-grouper",
"nvidia,tegra-audio-rt5640";
diff --git a/arch/arm/boot/dts/nvidia/tegra30-asus-nexus7-grouper-maxim-pmic.dtsi b/arch/arm/boot/dts/nvidia/tegra30-asus-nexus7-grouper-maxim-pmic.dtsi
index 694c7fe37eb8..4bd98935031b 100644
--- a/arch/arm/boot/dts/nvidia/tegra30-asus-nexus7-grouper-maxim-pmic.dtsi
+++ b/arch/arm/boot/dts/nvidia/tegra30-asus-nexus7-grouper-maxim-pmic.dtsi
@@ -135,7 +135,7 @@ ldo4 {
regulator-boot-on;
};
- ldo5 {
+ vddio_cam: ldo5 {
regulator-name = "vdd_camera";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
@@ -149,7 +149,7 @@ ldo6 {
regulator-boot-on;
};
- ldo7 {
+ avdd_dsi_csi: ldo7 {
regulator-name = "avdd_dsi_csi";
regulator-min-microvolt = <1200000>;
regulator-max-microvolt = <1200000>;
diff --git a/arch/arm/boot/dts/nvidia/tegra30-asus-nexus7-grouper-ti-pmic.dtsi b/arch/arm/boot/dts/nvidia/tegra30-asus-nexus7-grouper-ti-pmic.dtsi
index ee4a3f482769..8fe3c62c9052 100644
--- a/arch/arm/boot/dts/nvidia/tegra30-asus-nexus7-grouper-ti-pmic.dtsi
+++ b/arch/arm/boot/dts/nvidia/tegra30-asus-nexus7-grouper-ti-pmic.dtsi
@@ -92,13 +92,13 @@ ldo4 {
regulator-always-on;
};
- ldo5 {
+ vddio_cam: ldo5 {
regulator-name = "vddio_sdmmc,avdd_vdac";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
};
- ldo6 {
+ avdd_dsi_csi: ldo6 {
regulator-name = "avdd_dsi_csi,pwrdet_mipi";
regulator-min-microvolt = <1200000>;
regulator-max-microvolt = <1200000>;
--
2.51.0