[PATCH v6 0/8] arm64: dts: renesas: Enable GMSL on Eagle and Condor

[PATCH v6 0/8] arm64: dts: renesas: Enable GMSL on Eagle and Condor

[Jacopo Mondi]

Hello,
   here we go again with the attempt to try enable GMSL for Eagle and this time
also Condor board.

v5 highlighted an issue with the integration of RDACM20 which shown failures at
start streaming time due to conflicts with i2c writes performed by the embedded
microcontroller. A new patch
- media: i2c: rdacm20: Re-program chip address earlier
is aimed to fix the issue by reducing the collision window by re-programming the
chip address earlier. All capture session I've run seems stable now.

Compared to v5 integration for the Condor board is now included.

Condor has 2 GMSL channels, something the current version of the MAX9286 driver
does not support. However the DTS integration can be upstreamed but a single
channel can be used at a time.

Support for Condor required a reword of what was called eagle-gmsl.dtsi in v5
and is now called gmsl-cameras.dtsi to expand support for the secondary GMSL
channel.

Integration of the new "maxim,gpio-poc" property required for Eagle/Condor is
fully reviewed and can be eventually fast-tracked.

The series is based on:
https://patchwork.linuxtv.org/project/linux-media/list/?series=5847
and has been tested on Eagle V3H board, while only compile tested for Condor.

Thanks
   j

Jacopo Mondi (5):
  dt-bindings: media: max9286: Re-indent example
  dt-bindings: media: max9286: Define 'maxim,gpio-poc'
  media: i2c: max9286: Use "maxim,gpio-poc" property
  media: i2c: rdacm20: Re-program chip address earlier
  arm64: dts: renesas: condor: Enable MAX9286

Kieran Bingham (3):
  arm64: dts: renesas: eagle: Enable MAX9286
  arm64: dts: renesas: Add GMSL cameras .dtsi
  DNI: arm64: dts: renesas: eagle: Include eagle-gmsl

 .../bindings/media/i2c/maxim,max9286.yaml     | 275 +++++++++------
 arch/arm64/boot/dts/renesas/gmsl-cameras.dtsi | 332 ++++++++++++++++++
 .../arm64/boot/dts/renesas/r8a77970-eagle.dts | 112 ++++++
 .../boot/dts/renesas/r8a77980-condor.dts      | 193 ++++++++++
 drivers/media/i2c/max9286.c                   | 125 +++++--
 drivers/media/i2c/rdacm20.c                   |  10 +-
 6 files changed, 906 insertions(+), 141 deletions(-)
 create mode 100644 arch/arm64/boot/dts/renesas/gmsl-cameras.dtsi

--
2.32.0

[PATCH v6 1/8] dt-bindings: media: max9286: Re-indent example

[Jacopo Mondi]

The dt-bindings examples are usually indented with 4 spaces.

The maxim,max9286 schema has the example indented with only
2 spaces, re-indent it.

Cosmetic change only.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
---
 .../bindings/media/i2c/maxim,max9286.yaml     | 214 +++++++++---------
 1 file changed, 107 insertions(+), 107 deletions(-)

diff --git a/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml b/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml
index ee16102fdfe7..0e7162998b77 100644
--- a/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml
+++ b/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml
@@ -191,140 +191,140 @@ examples:
     #include <dt-bindings/gpio/gpio.h>
 
     i2c@e66d8000 {
-      #address-cells = <1>;
-      #size-cells = <0>;
+        #address-cells = <1>;
+        #size-cells = <0>;
 
-      reg = <0 0xe66d8000>;
+        reg = <0 0xe66d8000>;
 
-      gmsl-deserializer@2c {
-        compatible = "maxim,max9286";
-        reg = <0x2c>;
-        poc-supply = <&camera_poc_12v>;
-        enable-gpios = <&gpio 13 GPIO_ACTIVE_HIGH>;
+        gmsl-deserializer@2c {
+            compatible = "maxim,max9286";
+            reg = <0x2c>;
+            poc-supply = <&camera_poc_12v>;
+            enable-gpios = <&gpio 13 GPIO_ACTIVE_HIGH>;
 
-        gpio-controller;
-        #gpio-cells = <2>;
+            gpio-controller;
+            #gpio-cells = <2>;
 
-        maxim,reverse-channel-microvolt = <170000>;
+            maxim,reverse-channel-microvolt = <170000>;
 
-        ports {
-          #address-cells = <1>;
-          #size-cells = <0>;
+            ports {
+                #address-cells = <1>;
+                #size-cells = <0>;
 
-          port@0 {
-            reg = <0>;
+                port@0 {
+                    reg = <0>;
 
-            max9286_in0: endpoint {
-              remote-endpoint = <&rdacm20_out0>;
-            };
-          };
-
-          port@1 {
-            reg = <1>;
-
-            max9286_in1: endpoint {
-              remote-endpoint = <&rdacm20_out1>;
-            };
-          };
-
-          port@2 {
-            reg = <2>;
-
-            max9286_in2: endpoint {
-              remote-endpoint = <&rdacm20_out2>;
-            };
-          };
+                    max9286_in0: endpoint {
+                        remote-endpoint = <&rdacm20_out0>;
+                    };
+                };
 
-          port@3 {
-            reg = <3>;
+                port@1 {
+                    reg = <1>;
 
-            max9286_in3: endpoint {
-              remote-endpoint = <&rdacm20_out3>;
-            };
-          };
+                    max9286_in1: endpoint {
+                        remote-endpoint = <&rdacm20_out1>;
+                    };
+                };
 
-          port@4 {
-            reg = <4>;
+                port@2 {
+                    reg = <2>;
 
-            max9286_out: endpoint {
-              data-lanes = <1 2 3 4>;
-              remote-endpoint = <&csi40_in>;
-            };
-          };
-        };
+                    max9286_in2: endpoint {
+                        remote-endpoint = <&rdacm20_out2>;
+                    };
+                };
 
-        i2c-mux {
-          #address-cells = <1>;
-          #size-cells = <0>;
+                port@3 {
+                    reg = <3>;
 
-          i2c@0 {
-            #address-cells = <1>;
-            #size-cells = <0>;
-            reg = <0>;
+                    max9286_in3: endpoint {
+                        remote-endpoint = <&rdacm20_out3>;
+                    };
+                };
 
-            camera@51 {
-              compatible = "imi,rdacm20";
-              reg = <0x51>, <0x61>;
+                port@4 {
+                    reg = <4>;
 
-              port {
-                rdacm20_out0: endpoint {
-                  remote-endpoint = <&max9286_in0>;
+                    max9286_out: endpoint {
+                        data-lanes = <1 2 3 4>;
+                        remote-endpoint = <&csi40_in>;
+                    };
                 };
-              };
-
             };
-          };
-
-          i2c@1 {
-            #address-cells = <1>;
-            #size-cells = <0>;
-            reg = <1>;
 
-            camera@52 {
-              compatible = "imi,rdacm20";
-              reg = <0x52>, <0x62>;
+            i2c-mux {
+                #address-cells = <1>;
+                #size-cells = <0>;
 
-              port {
-                rdacm20_out1: endpoint {
-                  remote-endpoint = <&max9286_in1>;
-                };
-              };
-            };
-          };
+                i2c@0 {
+                    #address-cells = <1>;
+                    #size-cells = <0>;
+                    reg = <0>;
 
-          i2c@2 {
-            #address-cells = <1>;
-            #size-cells = <0>;
-            reg = <2>;
+                    camera@51 {
+                        compatible = "imi,rdacm20";
+                        reg = <0x51>, <0x61>;
 
-            camera@53 {
-              compatible = "imi,rdacm20";
-              reg = <0x53>, <0x63>;
+                        port {
+                            rdacm20_out0: endpoint {
+                                remote-endpoint = <&max9286_in0>;
+                            };
+                        };
 
-              port {
-                rdacm20_out2: endpoint {
-                  remote-endpoint = <&max9286_in2>;
+                    };
                 };
-              };
-            };
-          };
 
-          i2c@3 {
-            #address-cells = <1>;
-            #size-cells = <0>;
-            reg = <3>;
+                i2c@1 {
+                    #address-cells = <1>;
+                    #size-cells = <0>;
+                    reg = <1>;
+
+                    camera@52 {
+                        compatible = "imi,rdacm20";
+                        reg = <0x52>, <0x62>;
+
+                        port {
+                            rdacm20_out1: endpoint {
+                                remote-endpoint = <&max9286_in1>;
+                            };
+                        };
+                    };
+                };
 
-            camera@54 {
-              compatible = "imi,rdacm20";
-              reg = <0x54>, <0x64>;
+                i2c@2 {
+                    #address-cells = <1>;
+                    #size-cells = <0>;
+                    reg = <2>;
+
+                    camera@53 {
+                        compatible = "imi,rdacm20";
+                        reg = <0x53>, <0x63>;
+
+                        port {
+                            rdacm20_out2: endpoint {
+                                remote-endpoint = <&max9286_in2>;
+                            };
+                        };
+                    };
+                };
 
-              port {
-                rdacm20_out3: endpoint {
-                  remote-endpoint = <&max9286_in3>;
+                i2c@3 {
+                    #address-cells = <1>;
+                    #size-cells = <0>;
+                    reg = <3>;
+
+                    camera@54 {
+                        compatible = "imi,rdacm20";
+                        reg = <0x54>, <0x64>;
+
+                        port {
+                            rdacm20_out3: endpoint {
+                                remote-endpoint = <&max9286_in3>;
+                            };
+                        };
+                    };
                 };
-              };
             };
-          };
         };
-      };
     };
-- 
2.32.0

[PATCH v6 2/8] dt-bindings: media: max9286: Define 'maxim,gpio-poc'

[Jacopo Mondi]

Define a new vendor property in the maxim,max9286 binding schema.

The new property allows to declare that the remote camera
power-over-coax is controlled by one of the MAX9286 gpio lines.

As it is currently not possible to establish a regulator as consumer
of the MAX9286 gpio controller for this purpose, the property allows to
declare that the camera power is controlled by the MAX9286 directly.

The property accepts a gpio-index (0 or 1) and one line polarity
flag as defined by dt-bindings/gpio/gpio.h.

Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
---
 .../bindings/media/i2c/maxim,max9286.yaml     | 67 ++++++++++++++++++-
 1 file changed, 66 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml b/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml
index 0e7162998b77..bf93fa73ce41 100644
--- a/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml
+++ b/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml
@@ -70,6 +70,28 @@ properties:
       a remote serializer whose high-threshold noise immunity is not enabled
       is 100000 micro volts
 
+  maxim,gpio-poc:
+    $ref: '/schemas/types.yaml#/definitions/uint32-array'
+    minItems: 2
+    maxItems: 2
+    description: |
+      Index of the MAX9286 gpio output line (0 or 1) that controls Power over
+      Coax to the cameras and its associated polarity flag.
+
+      The property accepts an array of two unsigned integers, the first being
+      the gpio line index (0 or 1) and the second being the gpio line polarity
+      flag (GPIO_ACTIVE_HIGH or GPIO_ACTIVE_LOW) as defined in
+      <include/dt-bindings/gpio/gpio.h>.
+
+      When the remote cameras power is controlled by one of the MAX9286 gpio
+      lines, this property has to be used to specify which line among the two
+      available ones controls the remote camera power enablement.
+
+      When this property is used it is not possible to register a gpio
+      controller as the gpio lines are controlled directly by the MAX9286 and
+      not available for consumers, nor the 'poc-supply' property should be
+      specified.
+
   ports:
     $ref: /schemas/graph.yaml#/properties/ports
 
@@ -182,7 +204,16 @@ required:
   - reg
   - ports
   - i2c-mux
-  - gpio-controller
+
+# If 'maxim,gpio-poc' is present, then 'poc-supply' and 'gpio-controller'
+# are not allowed.
+if:
+  required:
+    - maxim,gpio-poc
+then:
+  properties:
+    poc-supply: false
+    gpio-controller: false
 
 additionalProperties: false
 
@@ -327,4 +358,38 @@ examples:
                 };
             };
         };
+
+        /*
+        * Example of a deserializer that controls the camera Power over Coax
+        * through one of its gpio lines.
+        */
+        gmsl-deserializer@6c {
+            compatible = "maxim,max9286";
+            reg = <0x6c>;
+            enable-gpios = <&gpio 14 GPIO_ACTIVE_HIGH>;
+
+            /*
+            * The remote camera power is controlled by MAX9286 GPIO line #0.
+            * No 'poc-supply' nor 'gpio-controller' are specified.
+            */
+            maxim,gpio-poc = <0 GPIO_ACTIVE_LOW>;
+
+            /*
+            * Do not describe connections as they're the same as in the previous
+            * example.
+            */
+            ports {
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                port@4 {
+                    reg = <4>;
+                };
+            };
+
+            i2c-mux {
+                #address-cells = <1>;
+                #size-cells = <0>;
+            };
+        };
     };
-- 
2.32.0

[PATCH v6 3/8] media: i2c: max9286: Use "maxim,gpio-poc" property

[Jacopo Mondi]

The 'maxim,gpio-poc' property is used when the remote camera
power-over-coax is controlled by one of the MAX9286 gpio lines,
to instruct the driver about which line to use and what the line
polarity is.

Add to the max9286 driver support for parsing the newly introduced
property and use it if available in place of the usual supply, as it is
not possible to establish one as consumer of the max9286 gpio
controller.

If the new property is present, no gpio controller is registered and
'poc-supply' is ignored.

In order to maximize code re-use, break out the max9286 gpio handling
function so that they can be used by the gpio controller through the
gpio-consumer API, or directly by the driver code.

Wrap the power up and power down routines to their own function to
be able to use either the gpio line directly or the supply. This will
make it easier to control the remote camera power at run time.

Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
 drivers/media/i2c/max9286.c | 125 +++++++++++++++++++++++++++---------
 1 file changed, 94 insertions(+), 31 deletions(-)

diff --git a/drivers/media/i2c/max9286.c b/drivers/media/i2c/max9286.c
index 18d38db9864c..1b92d18a1f94 100644
--- a/drivers/media/i2c/max9286.c
+++ b/drivers/media/i2c/max9286.c
@@ -15,6 +15,7 @@
 #include <linux/fwnode.h>
 #include <linux/gpio/consumer.h>
 #include <linux/gpio/driver.h>
+#include <linux/gpio/machine.h>
 #include <linux/i2c.h>
 #include <linux/i2c-mux.h>
 #include <linux/module.h>
@@ -168,6 +169,9 @@ struct max9286_priv {
 	u32 init_rev_chan_mv;
 	u32 rev_chan_mv;
 
+	u32 gpio_poc;
+	u32 gpio_poc_flags;
+
 	struct v4l2_ctrl_handler ctrls;
 	struct v4l2_ctrl *pixelrate;
 
@@ -1041,20 +1045,27 @@ static int max9286_setup(struct max9286_priv *priv)
 	return 0;
 }
 
-static void max9286_gpio_set(struct gpio_chip *chip,
-			     unsigned int offset, int value)
+static int max9286_gpio_set(struct max9286_priv *priv, unsigned int offset,
+			    int value)
 {
-	struct max9286_priv *priv = gpiochip_get_data(chip);
-
 	if (value)
 		priv->gpio_state |= BIT(offset);
 	else
 		priv->gpio_state &= ~BIT(offset);
 
-	max9286_write(priv, 0x0f, MAX9286_0X0F_RESERVED | priv->gpio_state);
+	return max9286_write(priv, 0x0f,
+			     MAX9286_0X0F_RESERVED | priv->gpio_state);
+}
+
+static void max9286_gpiochip_set(struct gpio_chip *chip,
+				 unsigned int offset, int value)
+{
+	struct max9286_priv *priv = gpiochip_get_data(chip);
+
+	max9286_gpio_set(priv, offset, value);
 }
 
-static int max9286_gpio_get(struct gpio_chip *chip, unsigned int offset)
+static int max9286_gpiochip_get(struct gpio_chip *chip, unsigned int offset)
 {
 	struct max9286_priv *priv = gpiochip_get_data(chip);
 
@@ -1074,16 +1085,81 @@ static int max9286_register_gpio(struct max9286_priv *priv)
 	gpio->of_node = dev->of_node;
 	gpio->ngpio = 2;
 	gpio->base = -1;
-	gpio->set = max9286_gpio_set;
-	gpio->get = max9286_gpio_get;
+	gpio->set = max9286_gpiochip_set;
+	gpio->get = max9286_gpiochip_get;
 	gpio->can_sleep = true;
 
+	ret = devm_gpiochip_add_data(dev, gpio, priv);
+	if (ret)
+		dev_err(dev, "Unable to create gpio_chip\n");
+
+	return ret;
+}
+
+static int max9286_parse_gpios(struct max9286_priv *priv)
+{
+	struct device *dev = &priv->client->dev;
+	u32 gpio_poc[2];
+	int ret;
+
 	/* GPIO values default to high */
 	priv->gpio_state = BIT(0) | BIT(1);
 
-	ret = devm_gpiochip_add_data(dev, gpio, priv);
+	/*
+	 * Parse the "gpio-poc" vendor property. If the camera power is
+	 * controlled by one of the MAX9286 gpio lines, do not register
+	 * the gpio controller and ignore 'poc-supply'.
+	 */
+	ret = of_property_read_u32_array(dev->of_node,
+					 "maxim,gpio-poc", gpio_poc, 2);
+	if (!ret) {
+		priv->gpio_poc = gpio_poc[0];
+		priv->gpio_poc_flags = gpio_poc[1];
+		if (priv->gpio_poc > 1 ||
+		    (priv->gpio_poc_flags != GPIO_ACTIVE_HIGH &&
+		     priv->gpio_poc_flags != GPIO_ACTIVE_LOW)) {
+			dev_err(dev, "Invalid 'gpio-poc': (%u %u)\n",
+				priv->gpio_poc, priv->gpio_poc_flags);
+			return -EINVAL;
+		}
+
+		return 0;
+	}
+
+	ret = max9286_register_gpio(priv);
 	if (ret)
-		dev_err(dev, "Unable to create gpio_chip\n");
+		return ret;
+
+	priv->regulator = devm_regulator_get(dev, "poc");
+	if (IS_ERR(priv->regulator)) {
+		if (PTR_ERR(priv->regulator) != -EPROBE_DEFER)
+			dev_err(dev, "Unable to get PoC regulator (%ld)\n",
+				PTR_ERR(priv->regulator));
+		return PTR_ERR(priv->regulator);
+	}
+
+	return 0;
+}
+
+static int max9286_poc_enable(struct max9286_priv *priv, bool enable)
+{
+	int ret;
+
+	/* If "poc-gpio" is used, toggle the line and do not use regulator. */
+	if (enable)
+		ret = priv->regulator
+		    ? regulator_enable(priv->regulator)
+		    : max9286_gpio_set(priv, priv->gpio_poc,
+				       enable ^ priv->gpio_poc_flags);
+	else
+		ret = priv->regulator
+		    ? regulator_disable(priv->regulator)
+		    : max9286_gpio_set(priv, priv->gpio_poc,
+				       enable ^ priv->gpio_poc_flags);
+
+	if (ret < 0)
+		dev_err(&priv->client->dev, "Unable to turn PoC %s\n",
+			enable ? "on" : "off");
 
 	return ret;
 }
@@ -1097,17 +1173,14 @@ static int max9286_init(struct device *dev)
 	client = to_i2c_client(dev);
 	priv = i2c_get_clientdata(client);
 
-	/* Enable the bus power. */
-	ret = regulator_enable(priv->regulator);
-	if (ret < 0) {
-		dev_err(&client->dev, "Unable to turn PoC on\n");
+	ret = max9286_poc_enable(priv, true);
+	if (ret)
 		return ret;
-	}
 
 	ret = max9286_setup(priv);
 	if (ret) {
 		dev_err(dev, "Unable to setup max9286\n");
-		goto err_regulator;
+		goto err_poc_disable;
 	}
 
 	/*
@@ -1117,7 +1190,7 @@ static int max9286_init(struct device *dev)
 	ret = max9286_v4l2_register(priv);
 	if (ret) {
 		dev_err(dev, "Failed to register with V4L2\n");
-		goto err_regulator;
+		goto err_poc_disable;
 	}
 
 	ret = max9286_i2c_mux_init(priv);
@@ -1133,8 +1206,8 @@ static int max9286_init(struct device *dev)
 
 err_v4l2_register:
 	max9286_v4l2_unregister(priv);
-err_regulator:
-	regulator_disable(priv->regulator);
+err_poc_disable:
+	max9286_poc_enable(priv, false);
 
 	return ret;
 }
@@ -1305,20 +1378,10 @@ static int max9286_probe(struct i2c_client *client)
 	 */
 	max9286_configure_i2c(priv, false);
 
-	ret = max9286_register_gpio(priv);
+	ret = max9286_parse_gpios(priv);
 	if (ret)
 		goto err_powerdown;
 
-	priv->regulator = devm_regulator_get(&client->dev, "poc");
-	if (IS_ERR(priv->regulator)) {
-		if (PTR_ERR(priv->regulator) != -EPROBE_DEFER)
-			dev_err(&client->dev,
-				"Unable to get PoC regulator (%ld)\n",
-				PTR_ERR(priv->regulator));
-		ret = PTR_ERR(priv->regulator);
-		goto err_powerdown;
-	}
-
 	ret = max9286_parse_dt(priv);
 	if (ret)
 		goto err_powerdown;
@@ -1345,7 +1408,7 @@ static int max9286_remove(struct i2c_client *client)
 
 	max9286_v4l2_unregister(priv);
 
-	regulator_disable(priv->regulator);
+	max9286_poc_enable(priv, false);
 
 	gpiod_set_value_cansleep(priv->gpiod_pwdn, 0);
 
-- 
2.32.0

[PATCH v6 4/8] media: i2c: rdacm20: Re-program chip address earlier

[Jacopo Mondi]

The current implementation of the camera module initialization
re-programs the chip address during the post-registration phase, once
the reverse channel amplitude has been compensated. While this guarantees
more reliable communications, reprogramming the chip address at probe()
time guarantees that the embedded MCU cannot over-write the settings
programmed by the driver.

Re-program the chip address at probe() time, to avoid conflicts on the
i2c bus due to messages sent by the embedded MCU to the default chip
address which render capture operations unstable.

Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
---
 drivers/media/i2c/rdacm20.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/media/i2c/rdacm20.c b/drivers/media/i2c/rdacm20.c
index ba956733aa89..eb0e3dc22cc3 100644
--- a/drivers/media/i2c/rdacm20.c
+++ b/drivers/media/i2c/rdacm20.c
@@ -462,11 +462,6 @@ static int rdacm20_post_register(struct v4l2_subdev *sd)
 	if (ret < 0)
 		return ret;
 
-	ret = max9271_set_address(&dev->serializer, dev->addrs[0]);
-	if (ret < 0)
-		return ret;
-	dev->serializer.client->addr = dev->addrs[0];
-
 	/*
 	 * Release ov10635 from reset and initialize it. The image sensor
 	 * requires at least 2048 XVCLK cycles (85 micro-seconds at 24MHz)
@@ -562,6 +557,11 @@ static int rdacm20_initialize(struct rdacm20_device *dev)
 	if (ret)
 		return ret;
 
+	ret = max9271_set_address(&dev->serializer, dev->addrs[0]);
+	if (ret < 0)
+		return ret;
+	dev->serializer.client->addr = dev->addrs[0];
+
 	/*
 	 * Set reverse channel high threshold to increase noise immunity.
 	 *
-- 
2.32.0

[PATCH v6 5/8] arm64: dts: renesas: condor: Enable MAX9286

[Jacopo Mondi]

Enable the MAX9286 GMSL deserializers on Condor-V3H board.

Connected cameras should be defined in a device-tree overlay or included
after these definitions.

Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
---
 .../boot/dts/renesas/r8a77980-condor.dts      | 193 ++++++++++++++++++
 1 file changed, 193 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r8a77980-condor.dts b/arch/arm64/boot/dts/renesas/r8a77980-condor.dts
index 04d47c0c9bb9..cb79c8738b78 100644
--- a/arch/arm64/boot/dts/renesas/r8a77980-condor.dts
+++ b/arch/arm64/boot/dts/renesas/r8a77980-condor.dts
@@ -6,6 +6,8 @@
  * Copyright (C) 2018 Cogent Embedded, Inc.
  */
 
+#include <dt-bindings/gpio/gpio.h>
+
 /dts-v1/;
 #include "r8a77980.dtsi"
 
@@ -107,6 +109,34 @@ channel0 {
 	};
 };
 
+&csi40 {
+	status = "okay";
+
+	ports {
+		port@0 {
+			csi40_in: endpoint {
+				clock-lanes = <0>;
+				data-lanes = <1 2 3 4>;
+				remote-endpoint = <&max9286_out0>;
+			};
+		};
+	};
+};
+
+&csi41 {
+	status = "okay";
+
+	ports {
+		port@0 {
+			csi41_in: endpoint {
+				clock-lanes = <0>;
+				data-lanes = <1 2 3 4>;
+				remote-endpoint = <&max9286_out1>;
+			};
+		};
+	};
+};
+
 &du {
 	clocks = <&cpg CPG_MOD 724>,
 		 <&x1_clk>;
@@ -196,6 +226,164 @@ adv7511_out: endpoint {
 	};
 };
 
+&i2c1 {
+	pinctrl-0 = <&i2c1_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+	clock-frequency = <400000>;
+
+	gmsl0: gmsl-deserializer@48 {
+		compatible = "maxim,max9286";
+		reg = <0x48>;
+
+		maxim,gpio-poc = <0 GPIO_ACTIVE_LOW>;
+		enable-gpios = <&io_expander0 0 GPIO_ACTIVE_HIGH>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+			};
+
+			port@1 {
+				reg = <1>;
+			};
+
+			port@2 {
+				reg = <2>;
+			};
+
+			port@3 {
+				reg = <3>;
+			};
+
+			port@4 {
+				reg = <4>;
+				max9286_out0: endpoint {
+					clock-lanes = <0>;
+					data-lanes = <1 2 3 4>;
+					remote-endpoint = <&csi40_in>;
+				};
+			};
+		};
+
+		i2c-mux {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			i2c@0 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <0>;
+
+				status = "disabled";
+			};
+
+			i2c@1 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <1>;
+
+				status = "disabled";
+			};
+
+			i2c@2 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <2>;
+
+				status = "disabled";
+			};
+
+			i2c@3 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <3>;
+
+				status = "disabled";
+			};
+		};
+	};
+
+	gmsl1: gmsl-deserializer@4a {
+		compatible = "maxim,max9286";
+		reg = <0x4a>;
+
+		maxim,gpio-poc = <0 GPIO_ACTIVE_LOW>;
+		enable-gpios = <&io_expander1 0 GPIO_ACTIVE_HIGH>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+			};
+
+			port@1 {
+				reg = <1>;
+			};
+
+			port@2 {
+				reg = <2>;
+			};
+
+			port@3 {
+				reg = <3>;
+			};
+
+			port@4 {
+				reg = <4>;
+				max9286_out1: endpoint {
+					clock-lanes = <0>;
+					data-lanes = <1 2 3 4>;
+					remote-endpoint = <&csi41_in>;
+				};
+			};
+		};
+
+		i2c-mux {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			i2c@0 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <0>;
+
+				status = "disabled";
+			};
+
+			i2c@1 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <1>;
+
+				status = "disabled";
+			};
+
+			i2c@2 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <2>;
+
+				status = "disabled";
+			};
+
+			i2c@3 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <3>;
+
+				status = "disabled";
+			};
+		};
+	};
+};
+
 &lvds0 {
 	status = "okay";
 
@@ -252,6 +440,11 @@ i2c0_pins: i2c0 {
 		function = "i2c0";
 	};
 
+	i2c1_pins: i2c1 {
+		groups = "i2c1";
+		function = "i2c1";
+	};
+
 	mmc_pins: mmc {
 		groups = "mmc_data8", "mmc_ctrl", "mmc_ds";
 		function = "mmc";
-- 
2.32.0

[PATCH v6 6/8] arm64: dts: renesas: eagle: Enable MAX9286

[Jacopo Mondi]

From: Kieran Bingham <kieran.bingham@ideasonboard.com>

Enable the MAX9286 GMSL deserializer on the Eagle-V3M board.

Connected cameras should be defined in a device-tree overlay or included
after these definitions.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
---
 .../arm64/boot/dts/renesas/r8a77970-eagle.dts | 104 ++++++++++++++++++
 1 file changed, 104 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r8a77970-eagle.dts b/arch/arm64/boot/dts/renesas/r8a77970-eagle.dts
index 874a7fc2730b..05e66467bc0a 100644
--- a/arch/arm64/boot/dts/renesas/r8a77970-eagle.dts
+++ b/arch/arm64/boot/dts/renesas/r8a77970-eagle.dts
@@ -6,6 +6,8 @@
  * Copyright (C) 2017 Cogent Embedded, Inc.
  */
 
+#include <dt-bindings/gpio/gpio.h>
+
 /dts-v1/;
 #include "r8a77970.dtsi"
 
@@ -188,6 +190,11 @@ i2c0_pins: i2c0 {
 		function = "i2c0";
 	};
 
+	i2c3_pins: i2c3 {
+		groups = "i2c3_a";
+		function = "i2c3";
+	};
+
 	qspi0_pins: qspi0 {
 		groups = "qspi0_ctrl", "qspi0_data4";
 		function = "qspi0";
@@ -266,6 +273,103 @@ &rwdt {
 	status = "okay";
 };
 
+&csi40 {
+	status = "okay";
+
+	ports {
+		port@0 {
+			csi40_in: endpoint {
+				clock-lanes = <0>;
+				data-lanes = <1 2 3 4>;
+				remote-endpoint = <&max9286_out0>;
+			};
+		};
+	};
+};
+
+&i2c3 {
+	pinctrl-0 = <&i2c3_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+	clock-frequency = <400000>;
+
+	gmsl0: gmsl-deserializer@48 {
+		compatible = "maxim,max9286";
+		reg = <0x48>;
+
+		maxim,gpio-poc = <0 GPIO_ACTIVE_LOW>;
+		enable-gpios = <&io_expander 0 GPIO_ACTIVE_HIGH>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+			};
+
+			port@1 {
+				reg = <1>;
+			};
+
+			port@2 {
+				reg = <2>;
+			};
+
+			port@3 {
+				reg = <3>;
+			};
+
+			port@4 {
+				reg = <4>;
+				max9286_out0: endpoint {
+					clock-lanes = <0>;
+					data-lanes = <1 2 3 4>;
+					remote-endpoint = <&csi40_in>;
+				};
+			};
+		};
+
+		i2c-mux {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			i2c@0 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <0>;
+
+				status = "disabled";
+			};
+
+			i2c@1 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <1>;
+
+				status = "disabled";
+			};
+
+			i2c@2 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <2>;
+
+				status = "disabled";
+			};
+
+			i2c@3 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <3>;
+
+				status = "disabled";
+			};
+		};
+	};
+};
+
 &scif0 {
 	pinctrl-0 = <&scif0_pins>;
 	pinctrl-names = "default";
-- 
2.32.0

[PATCH v6 7/8] arm64: dts: renesas: Add GMSL cameras .dtsi

[Jacopo Mondi]

From: Kieran Bingham <kieran.bingham@ideasonboard.com>

Describe the FAKRA connector available on Eagle and Condor boards that
allow to connect GMSL camera modules such as IMI RDACM20 and RDACM21.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
 arch/arm64/boot/dts/renesas/gmsl-cameras.dtsi | 332 ++++++++++++++++++
 1 file changed, 332 insertions(+)
 create mode 100644 arch/arm64/boot/dts/renesas/gmsl-cameras.dtsi

diff --git a/arch/arm64/boot/dts/renesas/gmsl-cameras.dtsi b/arch/arm64/boot/dts/renesas/gmsl-cameras.dtsi
new file mode 100644
index 000000000000..d45f072f8cdf
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/gmsl-cameras.dtsi
@@ -0,0 +1,332 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2017 Ideas on Board <kieran.bingham@ideasonboard.com>
+ * Copyright (C) 2021 Jacopo Mondi <jacopo+renesas@jmondi.org>
+ *
+ * Device Tree Source (overlay) that describes GMSL camera connected to
+ * Fakra connectors for the Eagle V3M and Condor V3H (and compatible) boards.
+ *
+ * The following cameras are currently supported: RDACM20 and RDACM21.
+ *
+ * The board .dts file that include this has to select which cameras are in use
+ * by specifying the camera model with:
+ *
+ * #define GMSL_CAMERA_RDACM20
+ * or
+ * #define GMSL_CAMERA_RDACM21
+ *
+ * And which cameras are connected to the board by defining:
+ * for GMSL channel 0:
+ *	   #define GMSL_CAMERA_0
+ *	   #define GMSL_CAMERA_1
+ *	   #define GMSL_CAMERA_2
+ *	   #define GMSL_CAMERA_3
+ *
+ * for GMSL channel 1:
+ *	   #define GMSL_CAMERA_4
+ *	   #define GMSL_CAMERA_5
+ *	   #define GMSL_CAMERA_6
+ *	   #define GMSL_CAMERA_7
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+
+/* Validate the board file settings. */
+#if !defined(GMSL_CAMERA_RDACM20) && !defined(GMSL_CAMERA_RDACM21)
+#error "Camera model should be defined by the board file"
+#endif
+
+#if defined(GMSL_CAMERA_RDACM20) && defined(GMSL_CAMERA_RDACM21)
+#error "A single camera model should be selected"
+#endif
+
+#if !defined(GMSL_CAMERA_0) && !defined(GMSL_CAMERA_1) && \
+    !defined(GMSL_CAMERA_2) && !defined(GMSL_CAMERA_3) && \
+    !defined(GMSL_CAMERA_4) && !defined(GMSL_CAMERA_5) && \
+    !defined(GMSL_CAMERA_6) && !defined(GMSL_CAMERA_7)
+#error "At least one camera should be selected"
+#endif
+
+/* Deduce from the enabled cameras which GMSL channels are active. */
+#if defined(GMSL_CAMERA_0) || defined(GMSL_CAMERA_1) || \
+    defined(GMSL_CAMERA_2) || defined(GMSL_CAMERA_3)
+#define GMSL_0
+#endif
+
+#if defined(GMSL_CAMERA_4) || defined(GMSL_CAMERA_5) || \
+    defined(GMSL_CAMERA_6) || defined(GMSL_CAMERA_7)
+#define GMSL_1
+#endif
+
+/* Deduce the camera model compatible string. */
+#if defined(GMSL_CAMERA_RDACM20)
+#define GMSL_CAMERA_MODEL "imi,rdacm20"
+#elif defined(GMSL_CAMERA_RDACM21)
+#define GMSL_CAMERA_MODEL "imi,rdacm21"
+#endif
+
+#ifdef GMSL_0
+&vin0 {
+	status = "okay";
+};
+
+&vin1 {
+	status = "okay";
+};
+
+&vin2 {
+	status = "okay";
+};
+
+&vin3 {
+	status = "okay";
+};
+
+&gmsl0 {
+	status = "okay";
+
+#if defined(GMSL_CAMERA_RDACM21)
+	maxim,reverse-channel-microvolt = <100000>;
+#endif
+
+	ports {
+#ifdef GMSL_CAMERA_0
+		port@0 {
+			max9286_in0: endpoint {
+				remote-endpoint = <&fakra_con0>;
+			};
+		};
+#endif
+
+#ifdef GMSL_CAMERA_1
+		port@1 {
+			max9286_in1: endpoint{
+				remote-endpoint = <&fakra_con1>;
+			};
+
+		};
+#endif
+
+#ifdef GMSL_CAMERA_2
+		port@2 {
+			max9286_in2: endpoint {
+				remote-endpoint = <&fakra_con2>;
+			};
+
+		};
+#endif
+
+#ifdef GMSL_CAMERA_3
+		port@3 {
+			max9286_in3: endpoint {
+				remote-endpoint = <&fakra_con3>;
+			};
+
+		};
+#endif
+	};
+
+	i2c-mux {
+#ifdef GMSL_CAMERA_0
+		i2c@0 {
+			status = "okay";
+
+			camera@51 {
+				compatible = GMSL_CAMERA_MODEL;
+				reg = <0x51>, <0x61>;
+
+				port {
+					fakra_con0: endpoint {
+						remote-endpoint = <&max9286_in0>;
+					};
+				};
+			};
+		};
+#endif
+
+#ifdef GMSL_CAMERA_1
+		i2c@1 {
+			status = "okay";
+
+			camera@52 {
+				compatible = GMSL_CAMERA_MODEL;
+				reg = <0x52>, <0x62>;
+
+				port {
+					fakra_con1: endpoint {
+						remote-endpoint = <&max9286_in1>;
+					};
+				};
+			};
+		};
+#endif
+
+#ifdef GMSL_CAMERA_2
+		i2c@2 {
+			status = "okay";
+
+			camera@53 {
+				compatible = GMSL_CAMERA_MODEL;
+				reg = <0x53>, <0x63>;
+
+				port {
+					fakra_con2: endpoint {
+						remote-endpoint = <&max9286_in2>;
+					};
+				};
+			};
+		};
+#endif
+
+#ifdef GMSL_CAMERA_3
+		i2c@3 {
+			status = "okay";
+
+			camera@54 {
+				compatible = GMSL_CAMERA_MODEL;
+				reg = <0x54>, <0x64>;
+
+				port {
+					fakra_con3: endpoint {
+						remote-endpoint = <&max9286_in3>;
+					};
+				};
+			};
+		};
+#endif
+	};
+};
+#endif /* ifdef GMSL_0 */
+
+#ifdef GMSL_1
+&vin4 {
+	status = "okay";
+};
+
+&vin5 {
+	status = "okay";
+};
+
+&vin6 {
+	status = "okay";
+};
+
+&vin7 {
+	status = "okay";
+};
+
+&gmsl1 {
+	status = "okay";
+
+#if defined(GMSL_CAMERA_RDACM21)
+	maxim,reverse-channel-microvolt = <100000>;
+#endif
+
+	ports {
+#ifdef GMSL_CAMERA_4
+		port@0 {
+			max9286_in4: endpoint {
+				remote-endpoint = <&fakra_con4>;
+			};
+		};
+#endif
+
+#ifdef GMSL_CAMERA_5
+		port@1 {
+			max9286_in5: endpoint{
+				remote-endpoint = <&fakra_con5>;
+			};
+
+		};
+#endif
+
+#ifdef GMSL_CAMERA_6
+		port@2 {
+			max9286_in6: endpoint {
+				remote-endpoint = <&fakra_con6>;
+			};
+
+		};
+#endif
+
+#ifdef GMSL_CAMERA_7
+		port@3 {
+			max9286_in7: endpoint {
+				remote-endpoint = <&fakra_con7>;
+			};
+
+		};
+#endif
+	};
+
+	i2c-mux {
+#ifdef GMSL_CAMERA_4
+		i2c@0 {
+			status = "okay";
+
+			camera@55 {
+				compatible = GMSL_CAMERA_MODEL;
+				reg = <0x55>, <0x65>;
+
+				port {
+					fakra_con4: endpoint {
+						remote-endpoint = <&max9286_in4>;
+					};
+				};
+			};
+		};
+#endif
+
+#ifdef GMSL_CAMERA_5
+		i2c@1 {
+			status = "okay";
+
+			camera@56 {
+				compatible = GMSL_CAMERA_MODEL;
+				reg = <0x56>, <0x66>;
+
+				port {
+					fakra_con5: endpoint {
+						remote-endpoint = <&max9286_in5>;
+					};
+				};
+			};
+		};
+#endif
+
+#ifdef GMSL_CAMERA_6
+		i2c@2 {
+			status = "okay";
+
+			camera@57 {
+				compatible = GMSL_CAMERA_MODEL;
+				reg = <0x57>, <0x67>;
+
+				port {
+					fakra_con6: endpoint {
+						remote-endpoint = <&max9286_in6>;
+					};
+				};
+			};
+		};
+#endif
+
+#ifdef GMSL_CAMERA_7
+		i2c@3 {
+			status = "okay";
+
+			camera@58 {
+				compatible = GMSL_CAMERA_MODEL;
+				reg = <0x58>, <0x68>;
+
+				port {
+					fakra_con7: endpoint {
+						remote-endpoint = <&max9286_in7>;
+					};
+				};
+			};
+		};
+#endif
+	};
+};
+#endif /* ifdef GMSL_1 */
-- 
2.32.0

[PATCH v6 8/8] DNI: arm64: dts: renesas: eagle: Include eagle-gmsl

[Jacopo Mondi]

From: Kieran Bingham <kieran.bingham@ideasonboard.com>

Include the eagle-gmsl.dtsi to enable GMSL camera support on the
Eagle-V3M platform.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
---
 arch/arm64/boot/dts/renesas/r8a77970-eagle.dts | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r8a77970-eagle.dts b/arch/arm64/boot/dts/renesas/r8a77970-eagle.dts
index 05e66467bc0a..542797288e9d 100644
--- a/arch/arm64/boot/dts/renesas/r8a77970-eagle.dts
+++ b/arch/arm64/boot/dts/renesas/r8a77970-eagle.dts
@@ -376,3 +376,11 @@ &scif0 {
 
 	status = "okay";
 };
+
+/* FAKRA Overlay */
+#define GMSL_CAMERA_RDACM20
+#define GMSL_CAMERA_0
+#define GMSL_CAMERA_1
+#define GMSL_CAMERA_2
+#define GMSL_CAMERA_3
+#include "gmsl-cameras.dtsi"
-- 
2.32.0