[PATCH 0/7] media: ov5693: cleanup code and add dts support

[PATCH 0/7] media: ov5693: cleanup code and add dts support

[Tommaso Merciai]

Hi All,
This series cleanup code on ov5693 driver and bring up dts support, also add
documentation for ov5693 camera sensor

Inspired by recently Quentin series:

 - https://patchwork.kernel.org/project/linux-media/list/?series=64807

Tommaso Merciai (7):
  media: ov5693: count num_supplies using array_size
  media: ov5693: add dvdd into ov5693_supply_names array
  media: ov5693: rename clk into xvclk
  media: ov5693: move hw cfg functions into ov5693_check_hwcfg
  media: ov5693: rename ov5693_check_hwcfg into ov5693_get_hwcfg
  media: ov5693: add ov5693_of_match, dts support
  media: dt-bindings: ov5693: document YAML binding

 .../bindings/media/i2c/ovti,ov5693.yaml       | 123 ++++++++++++++++++
 MAINTAINERS                                   |   1 +
 drivers/media/i2c/ov5693.c                    |  86 +++++++-----
 3 files changed, 176 insertions(+), 34 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/media/i2c/ovti,ov5693.yaml

-- 
2.25.1

[PATCH 1/7] media: ov5693: count num_supplies using array_size

[Tommaso Merciai]

Instead of hardcode OV5693_NUM_SUPPLIES in a define is better use
ARRAY_SIZE function to count the number of supplies from
ov5693_supply_names array

Signed-off-by: Tommaso Merciai <tommaso.merciai@amarulasolutions.com>
---
 drivers/media/i2c/ov5693.c | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/drivers/media/i2c/ov5693.c b/drivers/media/i2c/ov5693.c
index 117ff5403312..f410333c4c67 100644
--- a/drivers/media/i2c/ov5693.c
+++ b/drivers/media/i2c/ov5693.c
@@ -127,11 +127,15 @@
 #define OV5693_LINK_FREQ_419_2MHZ		419200000
 #define OV5693_PIXEL_RATE			167680000
 
-/* Miscellaneous */
-#define OV5693_NUM_SUPPLIES			2
-
 #define to_ov5693_sensor(x) container_of(x, struct ov5693_device, sd)
 
+static const char * const ov5693_supply_names[] = {
+	"avdd",		/* Analog power */
+	"dovdd",	/* Digital I/O power */
+};
+
+#define OV5693_NUM_SUPPLIES	ARRAY_SIZE(ov5693_supply_names)
+
 struct ov5693_reg {
 	u32 reg;
 	u8 val;
@@ -352,11 +356,6 @@ static const s64 link_freq_menu_items[] = {
 	OV5693_LINK_FREQ_419_2MHZ
 };
 
-static const char * const ov5693_supply_names[] = {
-	"avdd",
-	"dovdd",
-};
-
 static const char * const ov5693_test_pattern_menu[] = {
 	"Disabled",
 	"Random Data",
-- 
2.25.1

[PATCH 2/7] media: ov5693: add dvdd into ov5693_supply_names array

[Tommaso Merciai]

Add missing "dvdd" (Digital circuit power) entry into ov5693_supply_names
array

Signed-off-by: Tommaso Merciai <tommaso.merciai@amarulasolutions.com>
---
 drivers/media/i2c/ov5693.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/media/i2c/ov5693.c b/drivers/media/i2c/ov5693.c
index f410333c4c67..9e84468d920e 100644
--- a/drivers/media/i2c/ov5693.c
+++ b/drivers/media/i2c/ov5693.c
@@ -132,6 +132,7 @@
 static const char * const ov5693_supply_names[] = {
 	"avdd",		/* Analog power */
 	"dovdd",	/* Digital I/O power */
+	"dvdd",		/* Digital circuit power */
 };
 
 #define OV5693_NUM_SUPPLIES	ARRAY_SIZE(ov5693_supply_names)
-- 
2.25.1

[PATCH 3/7] media: ov5693: rename clk into xvclk

[Tommaso Merciai]

Rename clk pdata pointer into xvclk (system clock input).
Same for clk_rate into xvclk_rate. This is more explicit

Signed-off-by: Tommaso Merciai <tommaso.merciai@amarulasolutions.com>
---
 drivers/media/i2c/ov5693.c | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/media/i2c/ov5693.c b/drivers/media/i2c/ov5693.c
index 9e84468d920e..d2adc5513a21 100644
--- a/drivers/media/i2c/ov5693.c
+++ b/drivers/media/i2c/ov5693.c
@@ -157,7 +157,7 @@ struct ov5693_device {
 	struct gpio_desc *reset;
 	struct gpio_desc *powerdown;
 	struct regulator_bulk_data supplies[OV5693_NUM_SUPPLIES];
-	struct clk *clk;
+	struct clk *xvclk;
 
 	struct ov5693_mode {
 		struct v4l2_rect crop;
@@ -794,7 +794,7 @@ static void ov5693_sensor_powerdown(struct ov5693_device *ov5693)
 
 	regulator_bulk_disable(OV5693_NUM_SUPPLIES, ov5693->supplies);
 
-	clk_disable_unprepare(ov5693->clk);
+	clk_disable_unprepare(ov5693->xvclk);
 }
 
 static int ov5693_sensor_powerup(struct ov5693_device *ov5693)
@@ -804,7 +804,7 @@ static int ov5693_sensor_powerup(struct ov5693_device *ov5693)
 	gpiod_set_value_cansleep(ov5693->reset, 1);
 	gpiod_set_value_cansleep(ov5693->powerdown, 1);
 
-	ret = clk_prepare_enable(ov5693->clk);
+	ret = clk_prepare_enable(ov5693->xvclk);
 	if (ret) {
 		dev_err(ov5693->dev, "Failed to enable clk\n");
 		goto fail_power;
@@ -1390,7 +1390,7 @@ static int ov5693_check_hwcfg(struct ov5693_device *ov5693)
 static int ov5693_probe(struct i2c_client *client)
 {
 	struct ov5693_device *ov5693;
-	u32 clk_rate;
+	u32 xvclk_rate;
 	int ret = 0;
 
 	ov5693 = devm_kzalloc(&client->dev, sizeof(*ov5693), GFP_KERNEL);
@@ -1408,16 +1408,16 @@ static int ov5693_probe(struct i2c_client *client)
 
 	v4l2_i2c_subdev_init(&ov5693->sd, client, &ov5693_ops);
 
-	ov5693->clk = devm_clk_get(&client->dev, "xvclk");
-	if (IS_ERR(ov5693->clk)) {
+	ov5693->xvclk = devm_clk_get(&client->dev, "xvclk");
+	if (IS_ERR(ov5693->xvclk)) {
 		dev_err(&client->dev, "Error getting clock\n");
-		return PTR_ERR(ov5693->clk);
+		return PTR_ERR(ov5693->xvclk);
 	}
 
-	clk_rate = clk_get_rate(ov5693->clk);
-	if (clk_rate != OV5693_XVCLK_FREQ)
+	xvclk_rate = clk_get_rate(ov5693->xvclk);
+	if (xvclk_rate != OV5693_XVCLK_FREQ)
 		dev_warn(&client->dev, "Found clk freq %u, expected %u\n",
-			 clk_rate, OV5693_XVCLK_FREQ);
+			 xvclk_rate, OV5693_XVCLK_FREQ);
 
 	ret = ov5693_configure_gpios(ov5693);
 	if (ret)
-- 
2.25.1

[PATCH 4/7] media: ov5693: move hw cfg functions into ov5693_check_hwcfg

[Tommaso Merciai]

Move hw configuration functions into ov5693_check_hwcfg. This is done to
separe the code that handle the hw cfg from probe in a clean way

Signed-off-by: Tommaso Merciai <tommaso.merciai@amarulasolutions.com>
---
 drivers/media/i2c/ov5693.c | 53 +++++++++++++++++++++++---------------
 1 file changed, 32 insertions(+), 21 deletions(-)

diff --git a/drivers/media/i2c/ov5693.c b/drivers/media/i2c/ov5693.c
index d2adc5513a21..d5a934ace597 100644
--- a/drivers/media/i2c/ov5693.c
+++ b/drivers/media/i2c/ov5693.c
@@ -1348,6 +1348,38 @@ static int ov5693_check_hwcfg(struct ov5693_device *ov5693)
 	struct fwnode_handle *endpoint;
 	unsigned int i;
 	int ret;
+	u32 xvclk_rate;
+
+	ov5693->xvclk = devm_clk_get(ov5693->dev, "xvclk");
+	if (IS_ERR(ov5693->xvclk))
+		return dev_err_probe(ov5693->dev, PTR_ERR(ov5693->xvclk),
+				     "failed to get xvclk: %ld\n",
+				     PTR_ERR(ov5693->xvclk));
+
+	if (ov5693->xvclk) {
+		xvclk_rate = clk_get_rate(ov5693->xvclk);
+	} else {
+		ret = fwnode_property_read_u32(fwnode, "clock-frequency",
+					       &xvclk_rate);
+
+		if (ret) {
+			dev_err(ov5693->dev, "can't get clock frequency");
+			return ret;
+		}
+	}
+
+	if (xvclk_rate != OV5693_XVCLK_FREQ)
+		dev_warn(ov5693->dev, "Found clk freq %u, expected %u\n",
+			 xvclk_rate, OV5693_XVCLK_FREQ);
+
+	ret = ov5693_configure_gpios(ov5693);
+	if (ret)
+		return ret;
+
+	ret = ov5693_get_regulators(ov5693);
+	if (ret)
+		return dev_err_probe(ov5693->dev, ret,
+				     "Error fetching regulators\n");
 
 	endpoint = fwnode_graph_get_next_endpoint(fwnode, NULL);
 	if (!endpoint)
@@ -1390,7 +1422,6 @@ static int ov5693_check_hwcfg(struct ov5693_device *ov5693)
 static int ov5693_probe(struct i2c_client *client)
 {
 	struct ov5693_device *ov5693;
-	u32 xvclk_rate;
 	int ret = 0;
 
 	ov5693 = devm_kzalloc(&client->dev, sizeof(*ov5693), GFP_KERNEL);
@@ -1408,26 +1439,6 @@ static int ov5693_probe(struct i2c_client *client)
 
 	v4l2_i2c_subdev_init(&ov5693->sd, client, &ov5693_ops);
 
-	ov5693->xvclk = devm_clk_get(&client->dev, "xvclk");
-	if (IS_ERR(ov5693->xvclk)) {
-		dev_err(&client->dev, "Error getting clock\n");
-		return PTR_ERR(ov5693->xvclk);
-	}
-
-	xvclk_rate = clk_get_rate(ov5693->xvclk);
-	if (xvclk_rate != OV5693_XVCLK_FREQ)
-		dev_warn(&client->dev, "Found clk freq %u, expected %u\n",
-			 xvclk_rate, OV5693_XVCLK_FREQ);
-
-	ret = ov5693_configure_gpios(ov5693);
-	if (ret)
-		return ret;
-
-	ret = ov5693_get_regulators(ov5693);
-	if (ret)
-		return dev_err_probe(&client->dev, ret,
-				     "Error fetching regulators\n");
-
 	ov5693->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
 	ov5693->pad.flags = MEDIA_PAD_FL_SOURCE;
 	ov5693->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
-- 
2.25.1

[PATCH 5/7] media: ov5693: rename ov5693_check_hwcfg into ov5693_get_hwcfg

[Tommaso Merciai]

Function ov5693_check_hwcfg don't only check the hw configuration but
also get the hw configuration. Is better better to rename this into ov5693_get_hwcfg

Signed-off-by: Tommaso Merciai <tommaso.merciai@amarulasolutions.com>
---
 drivers/media/i2c/ov5693.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/media/i2c/ov5693.c b/drivers/media/i2c/ov5693.c
index d5a934ace597..273caef467fe 100644
--- a/drivers/media/i2c/ov5693.c
+++ b/drivers/media/i2c/ov5693.c
@@ -1339,7 +1339,7 @@ static int ov5693_get_regulators(struct ov5693_device *ov5693)
 				       ov5693->supplies);
 }
 
-static int ov5693_check_hwcfg(struct ov5693_device *ov5693)
+static int ov5693_get_hwcfg(struct ov5693_device *ov5693)
 {
 	struct fwnode_handle *fwnode = dev_fwnode(ov5693->dev);
 	struct v4l2_fwnode_endpoint bus_cfg = {
@@ -1431,7 +1431,7 @@ static int ov5693_probe(struct i2c_client *client)
 	ov5693->client = client;
 	ov5693->dev = &client->dev;
 
-	ret = ov5693_check_hwcfg(ov5693);
+	ret = ov5693_get_hwcfg(ov5693);
 	if (ret)
 		return ret;
 
-- 
2.25.1

[PATCH 6/7] media: ov5693: add ov5693_of_match, dts support

[Tommaso Merciai]

Add ov5693_of_match. Device tree support

Signed-off-by: Tommaso Merciai <tommaso.merciai@amarulasolutions.com>
---
 drivers/media/i2c/ov5693.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/media/i2c/ov5693.c b/drivers/media/i2c/ov5693.c
index 273caef467fe..0854226dc140 100644
--- a/drivers/media/i2c/ov5693.c
+++ b/drivers/media/i2c/ov5693.c
@@ -1532,10 +1532,17 @@ static const struct acpi_device_id ov5693_acpi_match[] = {
 };
 MODULE_DEVICE_TABLE(acpi, ov5693_acpi_match);
 
+static const struct of_device_id ov5693_of_match[] = {
+	{ .compatible = "ovti,ov5693", },
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, ov5693_of_match);
+
 static struct i2c_driver ov5693_driver = {
 	.driver = {
 		.name = "ov5693",
 		.acpi_match_table = ov5693_acpi_match,
+		.of_match_table = ov5693_of_match,
 		.pm = &ov5693_pm_ops,
 	},
 	.probe_new = ov5693_probe,
-- 
2.25.1

[PATCH 7/7] media: dt-bindings: ov5693: document YAML binding

[Tommaso Merciai]

This patch adds documentation of device tree in YAML schema for the
OV5693 CMOS image sensor from Omnivision

Signed-off-by: Tommaso Merciai <tommaso.merciai@amarulasolutions.com>
---
 .../bindings/media/i2c/ovti,ov5693.yaml       | 123 ++++++++++++++++++
 MAINTAINERS                                   |   1 +
 2 files changed, 124 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/i2c/ovti,ov5693.yaml

diff --git a/Documentation/devicetree/bindings/media/i2c/ovti,ov5693.yaml b/Documentation/devicetree/bindings/media/i2c/ovti,ov5693.yaml
new file mode 100644
index 000000000000..1ee70af40000
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/ovti,ov5693.yaml
@@ -0,0 +1,123 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (c) 2022 Amarulasolutions
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/i2c/ovti,ov5693.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Omnivision OV5693 CMOS Sensor
+
+maintainers:
+  - Tommaso Merciai <tommaso.merciai@amarulasolutions.com>
+
+allOf:
+  - $ref: /schemas/media/video-interface-devices.yaml#
+
+description: |
+  The Omnivision OV5693 is a high performance, 1/4-inch, 5 megapixel, CMOS
+  image sensor that delivers 2592x1944 at 30fps. It provides full-frame,
+  sub-sampled, and windowed 10-bit MIPI images in various formats via the
+  Serial Camera Control Bus (SCCB) interface.
+
+  Supports images sizes: 5 Mpixel, EIS1080p, 1080p, 720p, VGA, QVGA
+
+  OV5693 is programmable through I2C and two-wire Serial Camera Control Bus (SCCB).
+  The sensor output is available via CSI-2 serial data output (up to 2-lane).
+
+properties:
+  compatible:
+    const: ovti,ov5693
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    description:
+      System input clock (aka XVCLK). From 6 to 27 MHz.
+    maxItems: 1
+
+  dovdd-supply:
+    description:
+      Digital I/O voltage supply, 1.8V.
+
+  avdd-supply:
+    description:
+      Analog voltage supply, 2.8V.
+
+  dvdd-supply:
+    description:
+      Digital core voltage supply, 1.2V.
+
+  reset-gpios:
+    description:
+      The phandle and specifier for the GPIO that controls sensor reset.
+      This corresponds to the hardware pin XSHUTDN which is physically
+      active low.
+    maxItems: 1
+
+  port:
+    $ref: /schemas/graph.yaml#/$defs/port-base
+    additionalProperties: false
+
+    properties:
+      endpoint:
+        $ref: /schemas/media/video-interfaces.yaml#
+        unevaluatedProperties: false
+
+        properties:
+          data-lanes:
+            minItems: 1
+            maxItems: 2
+
+          # Supports max data transfer of 900 Mbps per lane
+          link-frequencies: true
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - dovdd-supply
+  - avdd-supply
+  - dvdd-supply
+  - port
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/px30-cru.h>
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/pinctrl/rockchip.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        ov5693: camera@36 {
+            compatible = "ovti,ov5693";
+            reg = <0x36>;
+
+            reset-gpios = <&gpio2 RK_PB1 GPIO_ACTIVE_LOW>;
+            pinctrl-names = "default";
+            pinctrl-0 = <&cif_clkout_m0>;
+
+            clocks = <&cru SCLK_CIF_OUT>;
+            assigned-clocks = <&cru SCLK_CIF_OUT>;
+            assigned-clock-rates = <19200000>;
+
+            avdd-supply = <&vcc_1v8>;
+            dvdd-supply = <&vcc_1v2>;
+            dovdd-supply = <&vcc_2v8>;
+
+            rotation = <90>;
+            orientation = <0>;
+
+            port {
+                ucam_out: endpoint {
+                    remote-endpoint = <&mipi_in_ucam>;
+                    data-lanes = <1 2>;
+                    link-frequencies = /bits/ 64 <450000000>;
+                };
+            };
+        };
+    };
\ No newline at end of file
diff --git a/MAINTAINERS b/MAINTAINERS
index 1fc9ead83d2a..844307cb20c4 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -14719,6 +14719,7 @@ M:	Daniel Scally <djrscally@gmail.com>
 L:	linux-media@vger.kernel.org
 S:	Maintained
 T:	git git://linuxtv.org/media_tree.git
+F:	Documentation/devicetree/bindings/media/i2c/ovti,ov5693.yaml
 F:	drivers/media/i2c/ov5693.c
 
 OMNIVISION OV5695 SENSOR DRIVER
-- 
2.25.1

Re: [PATCH 7/7] media: dt-bindings: ov5693: document YAML binding

[Krzysztof Kozlowski]

On 25/06/2022 01:03, Tommaso Merciai wrote:
> This patch adds documentation of device tree in YAML schema for the
> OV5693 CMOS image sensor from Omnivision
> 
> Signed-off-by: Tommaso Merciai <tommaso.merciai@amarulasolutions.com>
> ---
>  .../bindings/media/i2c/ovti,ov5693.yaml       | 123 ++++++++++++++++++
>  MAINTAINERS                                   |   1 +
>  2 files changed, 124 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/i2c/ovti,ov5693.yaml
> 
> diff --git a/Documentation/devicetree/bindings/media/i2c/ovti,ov5693.yaml b/Documentation/devicetree/bindings/media/i2c/ovti,ov5693.yaml
> new file mode 100644
> index 000000000000..1ee70af40000
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/i2c/ovti,ov5693.yaml
> @@ -0,0 +1,123 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +# Copyright (c) 2022 Amarulasolutions
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/media/i2c/ovti,ov5693.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Omnivision OV5693 CMOS Sensor
> +
> +maintainers:
> +  - Tommaso Merciai <tommaso.merciai@amarulasolutions.com>
> +
> +allOf:
> +  - $ref: /schemas/media/video-interface-devices.yaml#

This goes after description.

> +
> +description: |
> +  The Omnivision OV5693 is a high performance, 1/4-inch, 5 megapixel, CMOS
> +  image sensor that delivers 2592x1944 at 30fps. It provides full-frame,
> +  sub-sampled, and windowed 10-bit MIPI images in various formats via the
> +  Serial Camera Control Bus (SCCB) interface.
> +
> +  Supports images sizes: 5 Mpixel, EIS1080p, 1080p, 720p, VGA, QVGA
> +
> +  OV5693 is programmable through I2C and two-wire Serial Camera Control Bus (SCCB).
> +  The sensor output is available via CSI-2 serial data output (up to 2-lane).
> +
> +properties:
> +  compatible:
> +    const: ovti,ov5693
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    description:
> +      System input clock (aka XVCLK). From 6 to 27 MHz.
> +    maxItems: 1
> +
> +  dovdd-supply:
> +    description:
> +      Digital I/O voltage supply, 1.8V.
> +
> +  avdd-supply:
> +    description:
> +      Analog voltage supply, 2.8V.
> +
> +  dvdd-supply:
> +    description:
> +      Digital core voltage supply, 1.2V.
> +
> +  reset-gpios:
> +    description:
> +      The phandle and specifier for the GPIO that controls sensor reset.
> +      This corresponds to the hardware pin XSHUTDN which is physically
> +      active low.
> +    maxItems: 1
> +
> +  port:
> +    $ref: /schemas/graph.yaml#/$defs/port-base
> +    additionalProperties: false
> +
> +    properties:
> +      endpoint:
> +        $ref: /schemas/media/video-interfaces.yaml#
> +        unevaluatedProperties: false
> +
> +        properties:
> +          data-lanes:
> +            minItems: 1
> +            maxItems: 2
> +
> +          # Supports max data transfer of 900 Mbps per lane
> +          link-frequencies: true

This is not needed. Provided by video-interfaces.yaml.

> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - dovdd-supply
> +  - avdd-supply
> +  - dvdd-supply
> +  - port
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/px30-cru.h>
> +    #include <dt-bindings/gpio/gpio.h>
> +    #include <dt-bindings/pinctrl/rockchip.h>
> +
> +    i2c {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        ov5693: camera@36 {
> +            compatible = "ovti,ov5693";
> +            reg = <0x36>;
> +
> +            reset-gpios = <&gpio2 RK_PB1 GPIO_ACTIVE_LOW>;
> +            pinctrl-names = "default";
> +            pinctrl-0 = <&cif_clkout_m0>;
> +
> +            clocks = <&cru SCLK_CIF_OUT>;
> +            assigned-clocks = <&cru SCLK_CIF_OUT>;
> +            assigned-clock-rates = <19200000>;
> +
> +            avdd-supply = <&vcc_1v8>;
> +            dvdd-supply = <&vcc_1v2>;
> +            dovdd-supply = <&vcc_2v8>;
> +
> +            rotation = <90>;
> +            orientation = <0>;
> +
> +            port {
> +                ucam_out: endpoint {
> +                    remote-endpoint = <&mipi_in_ucam>;
> +                    data-lanes = <1 2>;
> +                    link-frequencies = /bits/ 64 <450000000>;
> +                };
> +            };
> +        };
> +    };
> \ No newline at end of file

^^^ This has to be fixed.

> diff --git a/MAINTAINERS b/MAINTAINERS
Best regards,
Krzysztof

Re: [PATCH 7/7] media: dt-bindings: ov5693: document YAML binding

[Tommaso Merciai]

Hi Krzysztof,
Thanks for your review, I will fix this in v2.

Regards,
Tommaso

On Sat, Jun 25, 2022 at 10:35:50PM +0200, Krzysztof Kozlowski wrote:
> On 25/06/2022 01:03, Tommaso Merciai wrote:
> > This patch adds documentation of device tree in YAML schema for the
> > OV5693 CMOS image sensor from Omnivision
> > 
> > Signed-off-by: Tommaso Merciai <tommaso.merciai@amarulasolutions.com>
> > ---
> >  .../bindings/media/i2c/ovti,ov5693.yaml       | 123 ++++++++++++++++++
> >  MAINTAINERS                                   |   1 +
> >  2 files changed, 124 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/media/i2c/ovti,ov5693.yaml
> > 
> > diff --git a/Documentation/devicetree/bindings/media/i2c/ovti,ov5693.yaml b/Documentation/devicetree/bindings/media/i2c/ovti,ov5693.yaml
> > new file mode 100644
> > index 000000000000..1ee70af40000
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/media/i2c/ovti,ov5693.yaml
> > @@ -0,0 +1,123 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +# Copyright (c) 2022 Amarulasolutions
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/media/i2c/ovti,ov5693.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Omnivision OV5693 CMOS Sensor
> > +
> > +maintainers:
> > +  - Tommaso Merciai <tommaso.merciai@amarulasolutions.com>
> > +
> > +allOf:
> > +  - $ref: /schemas/media/video-interface-devices.yaml#
> 
> This goes after description.
> 
> > +
> > +description: |
> > +  The Omnivision OV5693 is a high performance, 1/4-inch, 5 megapixel, CMOS
> > +  image sensor that delivers 2592x1944 at 30fps. It provides full-frame,
> > +  sub-sampled, and windowed 10-bit MIPI images in various formats via the
> > +  Serial Camera Control Bus (SCCB) interface.
> > +
> > +  Supports images sizes: 5 Mpixel, EIS1080p, 1080p, 720p, VGA, QVGA
> > +
> > +  OV5693 is programmable through I2C and two-wire Serial Camera Control Bus (SCCB).
> > +  The sensor output is available via CSI-2 serial data output (up to 2-lane).
> > +
> > +properties:
> > +  compatible:
> > +    const: ovti,ov5693
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  clocks:
> > +    description:
> > +      System input clock (aka XVCLK). From 6 to 27 MHz.
> > +    maxItems: 1
> > +
> > +  dovdd-supply:
> > +    description:
> > +      Digital I/O voltage supply, 1.8V.
> > +
> > +  avdd-supply:
> > +    description:
> > +      Analog voltage supply, 2.8V.
> > +
> > +  dvdd-supply:
> > +    description:
> > +      Digital core voltage supply, 1.2V.
> > +
> > +  reset-gpios:
> > +    description:
> > +      The phandle and specifier for the GPIO that controls sensor reset.
> > +      This corresponds to the hardware pin XSHUTDN which is physically
> > +      active low.
> > +    maxItems: 1
> > +
> > +  port:
> > +    $ref: /schemas/graph.yaml#/$defs/port-base
> > +    additionalProperties: false
> > +
> > +    properties:
> > +      endpoint:
> > +        $ref: /schemas/media/video-interfaces.yaml#
> > +        unevaluatedProperties: false
> > +
> > +        properties:
> > +          data-lanes:
> > +            minItems: 1
> > +            maxItems: 2
> > +
> > +          # Supports max data transfer of 900 Mbps per lane
> > +          link-frequencies: true
> 
> This is not needed. Provided by video-interfaces.yaml.
> 
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - clocks
> > +  - dovdd-supply
> > +  - avdd-supply
> > +  - dvdd-supply
> > +  - port
> > +
> > +unevaluatedProperties: false
> > +
> > +examples:
> > +  - |
> > +    #include <dt-bindings/clock/px30-cru.h>
> > +    #include <dt-bindings/gpio/gpio.h>
> > +    #include <dt-bindings/pinctrl/rockchip.h>
> > +
> > +    i2c {
> > +        #address-cells = <1>;
> > +        #size-cells = <0>;
> > +
> > +        ov5693: camera@36 {
> > +            compatible = "ovti,ov5693";
> > +            reg = <0x36>;
> > +
> > +            reset-gpios = <&gpio2 RK_PB1 GPIO_ACTIVE_LOW>;
> > +            pinctrl-names = "default";
> > +            pinctrl-0 = <&cif_clkout_m0>;
> > +
> > +            clocks = <&cru SCLK_CIF_OUT>;
> > +            assigned-clocks = <&cru SCLK_CIF_OUT>;
> > +            assigned-clock-rates = <19200000>;
> > +
> > +            avdd-supply = <&vcc_1v8>;
> > +            dvdd-supply = <&vcc_1v2>;
> > +            dovdd-supply = <&vcc_2v8>;
> > +
> > +            rotation = <90>;
> > +            orientation = <0>;
> > +
> > +            port {
> > +                ucam_out: endpoint {
> > +                    remote-endpoint = <&mipi_in_ucam>;
> > +                    data-lanes = <1 2>;
> > +                    link-frequencies = /bits/ 64 <450000000>;
> > +                };
> > +            };
> > +        };
> > +    };
> > \ No newline at end of file
> 
> ^^^ This has to be fixed.
> 
> > diff --git a/MAINTAINERS b/MAINTAINERS
> Best regards,
> Krzysztof

-- 
Tommaso Merciai
Embedded Linux Engineer
tommaso.merciai@amarulasolutions.com
__________________________________

Amarula Solutions SRL
Via Le Canevare 30, 31100 Treviso, Veneto, IT
T. +39 042 243 5310
info@amarulasolutions.com
www.amarulasolutions.com

Re: [PATCH 7/7] media: dt-bindings: ov5693: document YAML binding

[Rob Herring]

On Sat, 25 Jun 2022 01:03:07 +0200, Tommaso Merciai wrote:
> This patch adds documentation of device tree in YAML schema for the
> OV5693 CMOS image sensor from Omnivision
> 
> Signed-off-by: Tommaso Merciai <tommaso.merciai@amarulasolutions.com>
> ---
>  .../bindings/media/i2c/ovti,ov5693.yaml       | 123 ++++++++++++++++++
>  MAINTAINERS                                   |   1 +
>  2 files changed, 124 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/i2c/ovti,ov5693.yaml
> 

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:
./Documentation/devicetree/bindings/media/i2c/ovti,ov5693.yaml:123:7: [error] no new line character at the end of file (new-line-at-end-of-file)

dtschema/dtc warnings/errors:

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/patch/

This check can fail if there are any dependencies. The base for a patch
series is generally the most recent rc1.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit.