[PATCH V5 0/6] Add device-tree support for Cypress CYPD4226

[PATCH V5 0/6] Add device-tree support for Cypress CYPD4226

[Jon Hunter]

Add device-tree support for Cypress CYPD4226 Type-C controller and
enable for the Jetson AGX Orin board. This series is derived from the
series to enable USB host and device support for Jetson AGX Orin [0].
I have split this out from that series because it was getting quite
big.

[0] https://lore.kernel.org/linux-tegra/20221114124053.1873316-1-waynec@nvidia.com/

Jon Hunter (1):
  arm64: tegra: Populate USB Type-C Controller for Jetson AGX Orin

Wayne Chang (5):
  dt-bindings: usb: Add Cypress cypd4226 Type-C controller
  i2c: nvidia-gpu: Add ACPI property to align with device-tree
  usb: typec: ucsi_ccg: Add OF support
  i2c: nvidia-gpu: Remove ccgx,firmware-build property
  usb: typec: ucsi_ccg: Remove ccgx,firmware-build property

 .../bindings/usb/cypress,cypd4226.yaml        | 86 +++++++++++++++++++
 .../nvidia/tegra234-p3737-0000+p3701-0000.dts | 14 +++
 drivers/i2c/busses/i2c-nvidia-gpu.c           |  4 +-
 drivers/usb/typec/ucsi/ucsi_ccg.c             | 24 +++++-
 4 files changed, 122 insertions(+), 6 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/usb/cypress,cypd4226.yaml

-- 
2.25.1

[PATCH V5 1/6] dt-bindings: usb: Add Cypress cypd4226 Type-C controller

[Jon Hunter]

From: Wayne Chang <waynec@nvidia.com>

Add the device-tree binding documentation for Cypress cypd4226 dual
Type-C controller.

Signed-off-by: Wayne Chang <waynec@nvidia.com>
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
---
V4 -> V5: updated subject and updated binding to use 'firmware-name'.
V3 -> V4: no changes
V2 -> V3: fix additionalProperties warning on new schema
V1 -> V2: based on the review comments. Fix some addressed issues on

 .../bindings/usb/cypress,cypd4226.yaml        | 86 +++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/usb/cypress,cypd4226.yaml

diff --git a/Documentation/devicetree/bindings/usb/cypress,cypd4226.yaml b/Documentation/devicetree/bindings/usb/cypress,cypd4226.yaml
new file mode 100644
index 000000000000..5d87c9f09913
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/cypress,cypd4226.yaml
@@ -0,0 +1,86 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/usb/cypress,cypd4226.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Cypress cypd4226 Type-C Controller
+
+maintainers:
+  - Wayne Chang <waynec@nvidia.com>
+
+description:
+  The Cypress cypd4226 is a dual Type-C controller that is controlled
+  via an I2C interface.
+
+properties:
+  compatible:
+    const: cypress,cypd4226
+
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 0
+
+  reg:
+    const: 0x08
+
+  interrupts:
+    items:
+      - description: cypd4226 host interrupt
+
+  firmware-name:
+    enum:
+      - nvidia,gpu
+      - nvidia,jetson-agx-xavier
+    description: |
+      The name of the CCGx firmware built for product series.
+      should be set one of following:
+      - "nvidia,gpu" for the NVIDIA RTX product series
+      - "nvidia,jetson-agx-xavier" for the NVIDIA Jetson product series
+
+patternProperties:
+  '^connector@[0-1]+$':
+    $ref: /schemas/connector/usb-connector.yaml#
+    properties:
+      reg:
+        maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/tegra194-gpio.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+      #interrupt-cells = <2>;
+
+      ucsi-ccg@8 {
+        compatible = "cypress,cypd4226";
+        reg = <0x08>;
+        interrupt-parent = <&gpio_aon>;
+        interrupts = <TEGRA194_AON_GPIO(BB, 2) IRQ_TYPE_LEVEL_LOW>;
+        firmware-name = "nvidia,jetson-agx-xavier";
+        #address-cells = <1>;
+        #size-cells = <0>;
+        ccg_typec_con0: connector@0 {
+          compatible = "usb-c-connector";
+          reg = <0>;
+          label = "USB-C";
+          data-role = "dual";
+          port {
+            ucsi_ccg_p0: endpoint {
+              remote-endpoint = <&usb_role_switch0>;
+            };
+          };
+        };
+      };
+    };
-- 
2.25.1

[PATCH V5 2/6] i2c: nvidia-gpu: Add ACPI property to align with device-tree

[Jon Hunter]

From: Wayne Chang <waynec@nvidia.com>

Device-tree uses the 'firmware-name' string property to pass a name of
the firmware build to the Cypress CCGx driver. Add a new ACPI string
property to the NVIDIA GPU I2C driver to align with device-tree so that
we can migrate to using a common property name for both ACPI and
device-tree.

Signed-off-by: Wayne Chang <waynec@nvidia.com>
Co-developed-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
---
V5: Added this patch from V3

 drivers/i2c/busses/i2c-nvidia-gpu.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/i2c/busses/i2c-nvidia-gpu.c b/drivers/i2c/busses/i2c-nvidia-gpu.c
index 12e330cd7635..6d81ea530a83 100644
--- a/drivers/i2c/busses/i2c-nvidia-gpu.c
+++ b/drivers/i2c/busses/i2c-nvidia-gpu.c
@@ -261,6 +261,7 @@ MODULE_DEVICE_TABLE(pci, gpu_i2c_ids);
 static const struct property_entry ccgx_props[] = {
 	/* Use FW built for NVIDIA (nv) only */
 	PROPERTY_ENTRY_U16("ccgx,firmware-build", ('n' << 8) | 'v'),
+	PROPERTY_ENTRY_STRING("firmware-name", "nvidia,gpu"),
 	{ }
 };
 
-- 
2.25.1

[PATCH V5 3/6] usb: typec: ucsi_ccg: Add OF support

[Jon Hunter]

From: Wayne Chang <waynec@nvidia.com>

Add device-tree support for the Cypress CCG UCSI driver. The device-tree
binding for the Cypress CCG device uses the standard device-tree
'firmware-name' string property to indicate the firmware build that is
used. For ACPI a 16-bit property named 'ccgx,firmware-build' is used and
if this is not found fall back to the 'firmware-name' property.

Signed-off-by: Wayne Chang <waynec@nvidia.com>
Co-developed-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
---
V4 -> V5: add support for 'firmware-name'
V1 -> V4: nothing has changed

 drivers/usb/typec/ucsi/ucsi_ccg.c | 23 +++++++++++++++++++++--
 1 file changed, 21 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/typec/ucsi/ucsi_ccg.c b/drivers/usb/typec/ucsi/ucsi_ccg.c
index 46441f1477f2..889a831e251d 100644
--- a/drivers/usb/typec/ucsi/ucsi_ccg.c
+++ b/drivers/usb/typec/ucsi/ucsi_ccg.c
@@ -643,7 +643,7 @@ static int ccg_request_irq(struct ucsi_ccg *uc)
 {
 	unsigned long flags = IRQF_ONESHOT;
 
-	if (!has_acpi_companion(uc->dev))
+	if (!dev_fwnode(uc->dev))
 		flags |= IRQF_TRIGGER_HIGH;
 
 	return request_threaded_irq(uc->irq, NULL, ccg_irq_handler, flags, dev_name(uc->dev), uc);
@@ -1342,6 +1342,7 @@ static int ucsi_ccg_probe(struct i2c_client *client)
 {
 	struct device *dev = &client->dev;
 	struct ucsi_ccg *uc;
+	const char *fw_name;
 	int status;
 
 	uc = devm_kzalloc(dev, sizeof(*uc), GFP_KERNEL);
@@ -1359,7 +1360,18 @@ static int ucsi_ccg_probe(struct i2c_client *client)
 	/* Only fail FW flashing when FW build information is not provided */
 	status = device_property_read_u16(dev, "ccgx,firmware-build",
 					  &uc->fw_build);
-	if (status)
+	if (status) {
+		status = device_property_read_string(dev, "firmware-name",
+						     &fw_name);
+		if (!status) {
+			if (!strcmp(fw_name, "nvidia,jetson-agx-xavier"))
+				uc->fw_build = CCG_FW_BUILD_NVIDIA_TEGRA;
+			else if (!strcmp(fw_name, "nvidia,gpu"))
+				uc->fw_build = CCG_FW_BUILD_NVIDIA;
+		}
+	}
+
+	if (!uc->fw_build)
 		dev_err(uc->dev, "failed to get FW build information\n");
 
 	/* reset ccg device and initialize ucsi */
@@ -1426,6 +1438,12 @@ static void ucsi_ccg_remove(struct i2c_client *client)
 	free_irq(uc->irq, uc);
 }
 
+static const struct of_device_id ucsi_ccg_of_match_table[] = {
+		{ .compatible = "cypress,cypd4226", },
+		{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, ucsi_ccg_of_match_table);
+
 static const struct i2c_device_id ucsi_ccg_device_id[] = {
 	{"ccgx-ucsi", 0},
 	{}
@@ -1480,6 +1498,7 @@ static struct i2c_driver ucsi_ccg_driver = {
 		.pm = &ucsi_ccg_pm,
 		.dev_groups = ucsi_ccg_groups,
 		.acpi_match_table = amd_i2c_ucsi_match,
++		.of_match_table = ucsi_ccg_of_match_table,
 	},
 	.probe_new = ucsi_ccg_probe,
 	.remove = ucsi_ccg_remove,
-- 
2.25.1

Re: [PATCH V5 3/6] usb: typec: ucsi_ccg: Add OF support

[Jon Hunter]

On 19/01/2023 11:17, Jon Hunter wrote:
> From: Wayne Chang <waynec@nvidia.com>
> 
> Add device-tree support for the Cypress CCG UCSI driver. The device-tree
> binding for the Cypress CCG device uses the standard device-tree
> 'firmware-name' string property to indicate the firmware build that is
> used. For ACPI a 16-bit property named 'ccgx,firmware-build' is used and
> if this is not found fall back to the 'firmware-name' property.
> 
> Signed-off-by: Wayne Chang <waynec@nvidia.com>
> Co-developed-by: Jon Hunter <jonathanh@nvidia.com>
> Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
> ---
> V4 -> V5: add support for 'firmware-name'
> V1 -> V4: nothing has changed
> 
>   drivers/usb/typec/ucsi/ucsi_ccg.c | 23 +++++++++++++++++++++--
>   1 file changed, 21 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/usb/typec/ucsi/ucsi_ccg.c b/drivers/usb/typec/ucsi/ucsi_ccg.c
> index 46441f1477f2..889a831e251d 100644
> --- a/drivers/usb/typec/ucsi/ucsi_ccg.c
> +++ b/drivers/usb/typec/ucsi/ucsi_ccg.c
> @@ -643,7 +643,7 @@ static int ccg_request_irq(struct ucsi_ccg *uc)
>   {
>   	unsigned long flags = IRQF_ONESHOT;
>   
> -	if (!has_acpi_companion(uc->dev))
> +	if (!dev_fwnode(uc->dev))
>   		flags |= IRQF_TRIGGER_HIGH;
>   
>   	return request_threaded_irq(uc->irq, NULL, ccg_irq_handler, flags, dev_name(uc->dev), uc);
> @@ -1342,6 +1342,7 @@ static int ucsi_ccg_probe(struct i2c_client *client)
>   {
>   	struct device *dev = &client->dev;
>   	struct ucsi_ccg *uc;
> +	const char *fw_name;
>   	int status;
>   
>   	uc = devm_kzalloc(dev, sizeof(*uc), GFP_KERNEL);
> @@ -1359,7 +1360,18 @@ static int ucsi_ccg_probe(struct i2c_client *client)
>   	/* Only fail FW flashing when FW build information is not provided */
>   	status = device_property_read_u16(dev, "ccgx,firmware-build",
>   					  &uc->fw_build);
> -	if (status)
> +	if (status) {
> +		status = device_property_read_string(dev, "firmware-name",
> +						     &fw_name);
> +		if (!status) {
> +			if (!strcmp(fw_name, "nvidia,jetson-agx-xavier"))
> +				uc->fw_build = CCG_FW_BUILD_NVIDIA_TEGRA;
> +			else if (!strcmp(fw_name, "nvidia,gpu"))
> +				uc->fw_build = CCG_FW_BUILD_NVIDIA;
> +		}
> +	}
> +
> +	if (!uc->fw_build)
>   		dev_err(uc->dev, "failed to get FW build information\n");
>   
>   	/* reset ccg device and initialize ucsi */
> @@ -1426,6 +1438,12 @@ static void ucsi_ccg_remove(struct i2c_client *client)
>   	free_irq(uc->irq, uc);
>   }
>   
> +static const struct of_device_id ucsi_ccg_of_match_table[] = {
> +		{ .compatible = "cypress,cypd4226", },
> +		{ /* sentinel */ }
> +};
> +MODULE_DEVICE_TABLE(of, ucsi_ccg_of_match_table);
> +
>   static const struct i2c_device_id ucsi_ccg_device_id[] = {
>   	{"ccgx-ucsi", 0},
>   	{}
> @@ -1480,6 +1498,7 @@ static struct i2c_driver ucsi_ccg_driver = {
>   		.pm = &ucsi_ccg_pm,
>   		.dev_groups = ucsi_ccg_groups,
>   		.acpi_match_table = amd_i2c_ucsi_match,
> ++		.of_match_table = ucsi_ccg_of_match_table,


Not sure how this extra '+' crept in, but I will remove this.

Jon

-- 
nvpublic

[PATCH V5 4/6] i2c: nvidia-gpu: Remove ccgx,firmware-build property

[Jon Hunter]

From: Wayne Chang <waynec@nvidia.com>

Now the Cypress CCG driver has been updated to support the
'firmware-name' property to align with device-tree, remove the
'ccgx,firmware-build' property as this is no longer needed.

Signed-off-by: Wayne Chang <waynec@nvidia.com>
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
---
V5: Added this patch from V3

 drivers/i2c/busses/i2c-nvidia-gpu.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/i2c/busses/i2c-nvidia-gpu.c b/drivers/i2c/busses/i2c-nvidia-gpu.c
index 6d81ea530a83..a8b99e7f6262 100644
--- a/drivers/i2c/busses/i2c-nvidia-gpu.c
+++ b/drivers/i2c/busses/i2c-nvidia-gpu.c
@@ -259,8 +259,7 @@ static const struct pci_device_id gpu_i2c_ids[] = {
 MODULE_DEVICE_TABLE(pci, gpu_i2c_ids);
 
 static const struct property_entry ccgx_props[] = {
-	/* Use FW built for NVIDIA (nv) only */
-	PROPERTY_ENTRY_U16("ccgx,firmware-build", ('n' << 8) | 'v'),
+	/* Use FW built for NVIDIA GPU only */
 	PROPERTY_ENTRY_STRING("firmware-name", "nvidia,gpu"),
 	{ }
 };
-- 
2.25.1

[PATCH V5 5/6] usb: typec: ucsi_ccg: Remove ccgx,firmware-build property

[Jon Hunter]

From: Wayne Chang <waynec@nvidia.com>

Remove the property 'ccgx,firmware-build' now we have migrated devices
to using the 'firmware-name' property.

Signed-off-by: Wayne Chang <waynec@nvidia.com>
Co-developed-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
---
V5: Added this patch from V3

 drivers/usb/typec/ucsi/ucsi_ccg.c | 17 +++++++----------
 1 file changed, 7 insertions(+), 10 deletions(-)

diff --git a/drivers/usb/typec/ucsi/ucsi_ccg.c b/drivers/usb/typec/ucsi/ucsi_ccg.c
index 889a831e251d..0f18b32df8e6 100644
--- a/drivers/usb/typec/ucsi/ucsi_ccg.c
+++ b/drivers/usb/typec/ucsi/ucsi_ccg.c
@@ -1358,16 +1358,13 @@ static int ucsi_ccg_probe(struct i2c_client *client)
 	INIT_WORK(&uc->pm_work, ccg_pm_workaround_work);
 
 	/* Only fail FW flashing when FW build information is not provided */
-	status = device_property_read_u16(dev, "ccgx,firmware-build",
-					  &uc->fw_build);
-	if (status) {
-		status = device_property_read_string(dev, "firmware-name",
-						     &fw_name);
-		if (!status) {
-			if (!strcmp(fw_name, "nvidia,jetson-agx-xavier"))
-				uc->fw_build = CCG_FW_BUILD_NVIDIA_TEGRA;
-			else if (!strcmp(fw_name, "nvidia,gpu"))
-				uc->fw_build = CCG_FW_BUILD_NVIDIA;
+	status = device_property_read_string(dev, "firmware-name",
+					     &fw_name);
+	if (!status) {
+		if (!strcmp(fw_name, "nvidia,jetson-agx-xavier"))
+			uc->fw_build = CCG_FW_BUILD_NVIDIA_TEGRA;
+		else if (!strcmp(fw_name, "nvidia,gpu"))
+			uc->fw_build = CCG_FW_BUILD_NVIDIA;
 		}
 	}
 
-- 
2.25.1

Re: [PATCH V5 5/6] usb: typec: ucsi_ccg: Remove ccgx,firmware-build property

[Jon Hunter]

On 19/01/2023 11:17, Jon Hunter wrote:
> From: Wayne Chang <waynec@nvidia.com>
> 
> Remove the property 'ccgx,firmware-build' now we have migrated devices
> to using the 'firmware-name' property.
> 
> Signed-off-by: Wayne Chang <waynec@nvidia.com>
> Co-developed-by: Jon Hunter <jonathanh@nvidia.com>
> Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
> ---
> V5: Added this patch from V3
> 
>   drivers/usb/typec/ucsi/ucsi_ccg.c | 17 +++++++----------
>   1 file changed, 7 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/usb/typec/ucsi/ucsi_ccg.c b/drivers/usb/typec/ucsi/ucsi_ccg.c
> index 889a831e251d..0f18b32df8e6 100644
> --- a/drivers/usb/typec/ucsi/ucsi_ccg.c
> +++ b/drivers/usb/typec/ucsi/ucsi_ccg.c
> @@ -1358,16 +1358,13 @@ static int ucsi_ccg_probe(struct i2c_client *client)
>   	INIT_WORK(&uc->pm_work, ccg_pm_workaround_work);
>   
>   	/* Only fail FW flashing when FW build information is not provided */
> -	status = device_property_read_u16(dev, "ccgx,firmware-build",
> -					  &uc->fw_build);
> -	if (status) {
> -		status = device_property_read_string(dev, "firmware-name",
> -						     &fw_name);
> -		if (!status) {
> -			if (!strcmp(fw_name, "nvidia,jetson-agx-xavier"))
> -				uc->fw_build = CCG_FW_BUILD_NVIDIA_TEGRA;
> -			else if (!strcmp(fw_name, "nvidia,gpu"))
> -				uc->fw_build = CCG_FW_BUILD_NVIDIA;
> +	status = device_property_read_string(dev, "firmware-name",
> +					     &fw_name);
> +	if (!status) {
> +		if (!strcmp(fw_name, "nvidia,jetson-agx-xavier"))
> +			uc->fw_build = CCG_FW_BUILD_NVIDIA_TEGRA;
> +		else if (!strcmp(fw_name, "nvidia,gpu"))
> +			uc->fw_build = CCG_FW_BUILD_NVIDIA;
>   		}

The above } should have been removed as well. Not a good start to the 
day ...

>   	}
>   

-- 
nvpublic

[PATCH V5 6/6] arm64: tegra: Populate USB Type-C Controller for Jetson AGX Orin

[Jon Hunter]

Add the USB Type-C controller that is present on the Jetson AGX Orin
board. The ports for the Type-C controller are not populated yet, but
will be added later once the USB host and device support for Jetson AGX
Orin is enabled.

This is based upon a patch from Wayne Chang <waynec@nvidia.com>.

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
---
V5: nothing has changed
V4: added in this version

 .../dts/nvidia/tegra234-p3737-0000+p3701-0000.dts  | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts b/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
index 32c58aa00035..05819d8f8038 100644
--- a/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
+++ b/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
@@ -2115,6 +2115,20 @@ usb@3610000 {
 			phy-names = "usb2-0", "usb2-1", "usb2-2", "usb2-3",
 				"usb3-0", "usb3-1", "usb3-2";
 		};
+
+		i2c@c240000 {
+			status = "okay";
+			ucsi_ccg@8 {
+				compatible = "cypress,cypd4226";
+				reg = <0x08>;
+				interrupt-parent = <&gpio>;
+				interrupts = <TEGRA234_MAIN_GPIO(Y, 4) IRQ_TYPE_LEVEL_LOW>;
+				firmware-name = "nvidia,jetson-agx-xavier";
+				status = "okay";
+				#address-cells = <1>;
+				#size-cells = <0>;
+			};
+		};
 	};
 
 	chosen {
-- 
2.25.1

Re: [PATCH V5 0/6] Add device-tree support for Cypress CYPD4226

[Jon Hunter]

On 19/01/2023 11:17, Jon Hunter wrote:
> Add device-tree support for Cypress CYPD4226 Type-C controller and
> enable for the Jetson AGX Orin board. This series is derived from the
> series to enable USB host and device support for Jetson AGX Orin [0].
> I have split this out from that series because it was getting quite
> big.

Please ignore this revision. I have posted a V6 to fix a trivial 
compilation issue I had introduced.

-- 
nvpublic