[PATCH v5 2/2] ARM: dts: r8a7742-iwg21d-q7-dbcm-ca: Add support for 8-bit ov7725 sensors

[Geert Uytterhoeven]

From: Lad Prabhakar <prabhakar.mahadev-lad.rj at bp.renesas.com>

The 8-bit ov7725 sensors can also be connected to the camera daughter
board.

This patch creates a separate dtsi file to describe an ov7725 sensor,
and includes it multiple times in r8a7742-iwg21d-q7-dbcm-ca.dts. The
user can (un)comment #include statements depending on the cameras
connected.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj at bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz at bp.renesas.com>
[geert: describe a single camera in the .dtsi, include multiple times]
Signed-off-by: Geert Uytterhoeven <geert+renesas at glider.be>
---
v5:
  - Enable parent i2c bus when needed,

v4:
  - Describe a single camera in the .dtsi file,
  - Include the .dtsi multiple times.
---
 .../boot/dts/r8a7742-iwg21d-q7-dbcm-ca.dts    |  6 +++-
 .../r8a7742-iwg21d-q7-dbcm-ov7725-single.dtsi | 29 +++++++++++++++++++
 2 files changed, 34 insertions(+), 1 deletion(-)
 create mode 100644 arch/arm/boot/dts/r8a7742-iwg21d-q7-dbcm-ov7725-single.dtsi

diff --git a/arch/arm/boot/dts/r8a7742-iwg21d-q7-dbcm-ca.dts b/arch/arm/boot/dts/r8a7742-iwg21d-q7-dbcm-ca.dts
index bc8280b2ac47e3ec..2bcb229844abc5c2 100644
--- a/arch/arm/boot/dts/r8a7742-iwg21d-q7-dbcm-ca.dts
+++ b/arch/arm/boot/dts/r8a7742-iwg21d-q7-dbcm-ca.dts
@@ -198,7 +198,7 @@ &scifb1 {
 /*
  * Below configuration ties VINx endpoints to ov5640/ov7725 camera endpoints
  *
- * Uncomment the #include statements to change configuration
+ * (un)comment the #include statements to change configuration
  */
 
 /* 8bit CMOS Camera 1 (J13) */
@@ -208,6 +208,7 @@ &scifb1 {
 #define VIN_EP			vin0ep
 #undef CAM_ENABLED
 #include "r8a7742-iwg21d-q7-dbcm-ov5640-single.dtsi"
+//#include "r8a7742-iwg21d-q7-dbcm-ov7725-single.dtsi"
 
 #ifdef CAM_ENABLED
 &vin0 {
@@ -241,6 +242,7 @@ vin0ep: endpoint {
 #define VIN_EP			vin1ep
 #undef CAM_ENABLED
 #include "r8a7742-iwg21d-q7-dbcm-ov5640-single.dtsi"
+//#include "r8a7742-iwg21d-q7-dbcm-ov7725-single.dtsi"
 
 #ifdef CAM_ENABLED
 &vin1 {
@@ -272,6 +274,7 @@ vin1ep: endpoint {
 #define VIN_EP			vin2ep
 #undef CAM_ENABLED
 #include "r8a7742-iwg21d-q7-dbcm-ov5640-single.dtsi"
+//#include "r8a7742-iwg21d-q7-dbcm-ov7725-single.dtsi"
 
 #ifdef CAM_ENABLED
 &vin2 {
@@ -302,6 +305,7 @@ vin2ep: endpoint {
 #define VIN_EP			vin3ep
 #undef CAM_ENABLED
 #include "r8a7742-iwg21d-q7-dbcm-ov5640-single.dtsi"
+//#include "r8a7742-iwg21d-q7-dbcm-ov7725-single.dtsi"
 
 #ifdef CAM_ENABLED
 &vin3 {
diff --git a/arch/arm/boot/dts/r8a7742-iwg21d-q7-dbcm-ov7725-single.dtsi b/arch/arm/boot/dts/r8a7742-iwg21d-q7-dbcm-ov7725-single.dtsi
new file mode 100644
index 0000000000000000..f5e77f0242516720
--- /dev/null
+++ b/arch/arm/boot/dts/r8a7742-iwg21d-q7-dbcm-ov7725-single.dtsi
@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * This include file ties a VIN interface with a single ov7725 sensor on
+ * the iWave-RZ/G1H Qseven board development platform connected with the
+ * camera daughter board.
+ *
+ * Copyright (C) 2020 Renesas Electronics Corp.
+ */
+
+#define CAM_ENABLED	1
+
+&CAM_PARENT_I2C {
+	status = "okay";
+
+	ov7725 at 21 {
+		compatible = "ovti,ov7725";
+		reg = <0x21>;
+		clocks = <&MCLK_CAM>;
+		status = "okay";
+
+		port {
+			CAM_EP: endpoint {
+				bus-width = <8>;
+				bus-type = <6>;
+				remote-endpoint = <&VIN_EP>;
+			};
+		};
+	};
+};
-- 
2.25.1