Defines the host v4l2-capture device node and an OV5642 camera sensor
node on i2c2. The host capture device is a child of ipu1. An OV5642
parallel-bus endpoint is defined that connects to the host parallel-bus
endpoint on CSI0, using the OF graph bindings described in
Documentation/devicetree/bindings/media/video-interfaces.txt.
Note there is a pin conflict with GPIO6. This pin functions as a power
input pin to the OV5642, but ENET requires it to wake-up the ARM cores
on normal RX and TX packet done events (see 6261c4c8). So by default,
capture is disabled, enable by uncommenting __OV5642_CAPTURE__ macro.
Ethernet will still work just not quite as well.
Signed-off-by: Steve Longerbeam <steve_longerbeam@xxxxxxxxxx>
---
.../devicetree/bindings/vendor-prefixes.txt | 1 +
arch/arm/boot/dts/imx6qdl-sabrelite.dtsi | 91 ++++++++++++++++++++
2 files changed, 92 insertions(+)
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index abc3080..90d19f8 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -90,6 +90,7 @@ nvidia NVIDIA
nxp NXP Semiconductors
onnn ON Semiconductor Corp.
opencores OpenCores.org
+ovti OmniVision Technologies, Inc
panasonic Panasonic Corporation
phytec PHYTEC Messtechnik GmbH
picochip Picochip Ltd
diff --git a/arch/arm/boot/dts/imx6qdl-sabrelite.dtsi b/arch/arm/boot/dts/imx6qdl-sabrelite.dtsi
index 3bec128..ea5bd9c 100644
--- a/arch/arm/boot/dts/imx6qdl-sabrelite.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-sabrelite.dtsi
@@ -12,6 +12,15 @@
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
+/*
+ * Uncomment the following macro to enable OV5642 video capture
+ * support. There is a pin conflict for GPIO6 between ENET wake-up
+ * interrupt function and power-down pin function for the OV5642.
+ * ENET will still work when enabling OV5642 capture, just not
+ * quite as well.
+ */
+/* #define __OV5642_CAPTURE__ */
+
/ {
memory {
reg = <0x10000000 0x40000000>;
@@ -164,8 +173,10 @@
txd1-skew-ps = <0>;
txd2-skew-ps = <0>;
txd3-skew-ps = <0>;
+#ifndef __OV5642_CAPTURE__
interrupts-extended = <&gpio1 6 IRQ_TYPE_LEVEL_HIGH>,
<&intc 0 119 IRQ_TYPE_LEVEL_HIGH>;
+#endif
status = "okay";
};
@@ -193,6 +204,12 @@
fsl,pins = <
/* SGTL5000 sys_mclk */
MX6QDL_PAD_GPIO_0__CCM_CLKO1 0x030b0
+#ifdef __OV5642_CAPTURE__
+ MX6QDL_PAD_SD1_DAT0__GPIO1_IO16 0x80000000
+ MX6QDL_PAD_GPIO_6__GPIO1_IO06 0x80000000
+ MX6QDL_PAD_GPIO_8__GPIO1_IO08 0x80000000
+ MX6QDL_PAD_GPIO_3__CCM_CLKO2 0x80000000
+#endif
>;
};
@@ -233,7 +250,9 @@
MX6QDL_PAD_RGMII_RX_CTL__RGMII_RX_CTL 0x1b0b0
/* Phy reset */
MX6QDL_PAD_EIM_D23__GPIO3_IO23 0x000b0
+#ifndef __OV5642_CAPTURE__
MX6QDL_PAD_GPIO_6__ENET_IRQ 0x000b1
+#endif
>;
};
@@ -261,6 +280,13 @@
>;
};
+ pinctrl_i2c2: i2c2grp {
+ fsl,pins = <
+ MX6QDL_PAD_KEY_COL3__I2C2_SCL 0x4001b8b1
+ MX6QDL_PAD_KEY_ROW3__I2C2_SDA 0x4001b8b1
+ >;
+ };
+
pinctrl_pwm1: pwm1grp {
fsl,pins = <
MX6QDL_PAD_SD1_DAT3__PWM1_OUT 0x1b0b1
@@ -421,3 +447,68 @@
vmmc-supply = <®_3p3v>;
status = "okay";
};
+
+#ifdef __OV5642_CAPTURE__
+
+&i2c2 {
+ status = "okay";
+ clock-frequency = <100000>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_i2c2>;
+
+ camera: ov5642@3c {
+ compatible = "ovti,ov5642";
+ clocks = <&clks 200>;
+ clock-names = "xclk";
+ reg = <0x3c>;
+ xclk = <24000000>;
+ reset-gpios = <&gpio1 8 0>;
+ pwdn-gpios = <&gpio1 6 0>;
+ gp-gpios = <&gpio1 16 0>;
+
+ port {
+ /* With 1 endpoint per port no need for addresses. */
+ ov5642_1: endpoint {
+ remote-endpoint = <&csi0>;
+ bus-width = <12>;
+ hsync-active = <1>;
+ vsync-active = <1>;
+ };
+ };
+ };
+};
+
+&ipu1 {
+ status = "okay";
+
+ v4l2-capture {
+ compatible = "fsl,imx6-v4l2-capture";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <
+ &pinctrl_ipu1_csi0_1
+ &pinctrl_ipu1_csi0_data_en
+ >;
+
+ /* CSI0 */
+ port@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0>;
+
+ /* Parallel bus */
+ csi0: endpoint@0 {
+ reg = <0>;
+ remote-endpoint = <&ov5642_1>;
+ bus-width = <12>;
+ data-shift = <8>; /* Lines 19:8 used */
+ hsync-active = <1>;
+ vync-active = <1>;
+ };
+ };
+ };
+};
+
+#endif /* __OV5642_CAPTURE__ */
--
1.7.9.5
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