ARM: tegra: transformer: Add support for front camera

Add front camera video path. Aptina MI1040 camera is used on all supported
ASUS Transformers, but only TF201 and TF700T will work since on
TF300T/TG/TL front camera is linked through an additional ISP.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

diff --git a/arch/arm/boot/dts/nvidia/tegra30-asus-transformer-common.dtsi b/arch/arm/boot/dts/nvidia/tegra30-asus-transformer-common.dtsi
index ead95306840f7e34956e6546a5ae1796002a8b02..e6d079647f772c419ef59b7a1af3d3400a9df6f1 100644 (file)
--- a/arch/arm/boot/dts/nvidia/tegra30-asus-transformer-common.dtsi
+++ b/arch/arm/boot/dts/nvidia/tegra30-asus-transformer-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/thermal/thermal.h>
 
 #include "tegra30.dtsi"
@@ -73,6 +74,91 @@
        };
 
        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>;
+                                                       /* Add 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>;
+                                       };
+                               };
+                       };
+               };
+
                hdmi: hdmi@54280000 {
                        status = "okay";
 
@@ -1160,6 +1246,36 @@
                        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 = <&vdd_1v8_cam>;
+                       vdd-supply = <&vdd_1v8_cam>;
+                       vaa-supply = <&avdd_2v85_fcam>;
+
+                       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>;
+                               };
+                       };
+               };
+
                gyroscope@68 {
                        compatible = "invensense,mpu3050";
                        reg = <0x68>;
@@ -1297,7 +1413,7 @@
 
                                /* LDO5 is not used by Transformers */
 
-                               ldo6 {
+                               avdd_dsi_csi: ldo6 {
                                        regulator-name = "avdd_dsi_csi,pwrdet_mipi";
                                        regulator-min-microvolt = <1200000>;
                                        regulator-max-microvolt = <1200000>;
@@ -1672,6 +1788,26 @@
                vin-supply = <&vdd_5v0_sys>;
        };
 
+       vdd_1v8_cam: regulator-viocam {
+               compatible = "regulator-fixed";
+               regulator-name = "vdd_1v8_cam";
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <1800000>;
+               gpio = <&gpio TEGRA_GPIO(BB, 4) GPIO_ACTIVE_HIGH>;
+               enable-active-high;
+               vin-supply = <&vdd_1v8_vio>;
+       };
+
+       avdd_2v85_fcam: regulator-avcam-front {
+               compatible = "regulator-fixed";
+               regulator-name = "vdd_2v85_fcam";
+               regulator-min-microvolt = <2850000>;
+               regulator-max-microvolt = <2850000>;
+               gpio = <&gpio TEGRA_GPIO(S, 0) GPIO_ACTIVE_HIGH>;
+               enable-active-high;
+               vin-supply = <&vdd_3v3_sys>;
+       };
+
        sound {
                nvidia,i2s-controller = <&tegra_i2s1>;