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[PATCH can-next v5 2/2] can: tcan4x5x: add option for selecting nWKRQ voltage

Sean Nyekjaer posted 2 patches 1 week, 1 day ago
[PATCH can-next v5 2/2] can: tcan4x5x: add option for selecting nWKRQ voltage
Posted by Sean Nyekjaer 1 week, 1 day ago 
The nWKRQ pin supports an output voltage of either the internal reference
voltage (3.6V) or the reference voltage of
the digital interface 0-6V (VIO).
Add the devicetree option ti,nwkrq-voltage-vio to set it to VIO.

If this property is omitted the reset default, the internal reference
voltage, is used.

Signed-off-by: Sean Nyekjaer <sean@geanix.com>
Reviewed-by: Marc Kleine-Budde <mkl@pengutronix.de>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 drivers/net/can/m_can/tcan4x5x-core.c | 20 ++++++++++++++++++++
 drivers/net/can/m_can/tcan4x5x.h      |  2 ++
 2 files changed, 22 insertions(+)

diff --git a/drivers/net/can/m_can/tcan4x5x-core.c b/drivers/net/can/m_can/tcan4x5x-core.c
index 2f73bf3abad889c222f15c39a3d43de1a1cf5fbb..7213d9894c82d079bf92f1ec62d4eebb500cdfa4 100644
--- a/drivers/net/can/m_can/tcan4x5x-core.c
+++ b/drivers/net/can/m_can/tcan4x5x-core.c
@@ -92,6 +92,8 @@
 #define TCAN4X5X_MODE_STANDBY BIT(6)
 #define TCAN4X5X_MODE_NORMAL BIT(7)
 
+#define TCAN4X5X_NWKRQ_VOLTAGE_VIO BIT(19)
+
 #define TCAN4X5X_DISABLE_WAKE_MSK	(BIT(31) | BIT(30))
 #define TCAN4X5X_DISABLE_INH_MSK	BIT(9)
 
@@ -267,6 +269,13 @@ static int tcan4x5x_init(struct m_can_classdev *cdev)
 	if (ret)
 		return ret;
 
+	if (tcan4x5x->nwkrq_voltage_vio) {
+		ret = regmap_set_bits(tcan4x5x->regmap, TCAN4X5X_CONFIG,
+				      TCAN4X5X_NWKRQ_VOLTAGE_VIO);
+		if (ret)
+			return ret;
+	}
+
 	return ret;
 }
 
@@ -318,6 +327,15 @@ static const struct tcan4x5x_version_info
 	return &tcan4x5x_versions[TCAN4X5X];
 }
 
+static void tcan4x5x_get_dt_data(struct m_can_classdev *cdev)
+{
+	struct tcan4x5x_priv *tcan4x5x = cdev_to_priv(cdev);
+	struct device_node *np = cdev->dev->of_node;
+
+	tcan4x5x->nwkrq_voltage_vio =
+		of_property_read_bool(cdev->dev->of_node, "ti,nwkrq-voltage-vio");
+}
+
 static int tcan4x5x_get_gpios(struct m_can_classdev *cdev,
 			      const struct tcan4x5x_version_info *version_info)
 {
@@ -453,6 +471,8 @@ static int tcan4x5x_can_probe(struct spi_device *spi)
 		goto out_power;
 	}
 
+	tcan4x5x_get_dt_data(mcan_class);
+
 	tcan4x5x_check_wake(priv);
 
 	ret = tcan4x5x_write_tcan_reg(mcan_class, TCAN4X5X_INT_EN, 0);
diff --git a/drivers/net/can/m_can/tcan4x5x.h b/drivers/net/can/m_can/tcan4x5x.h
index e62c030d3e1e5a713c997e7c8ecad4a44aff4e6a..203399d5e8ccf3fd7a26b54d8356fca9d398524c 100644
--- a/drivers/net/can/m_can/tcan4x5x.h
+++ b/drivers/net/can/m_can/tcan4x5x.h
@@ -42,6 +42,8 @@ struct tcan4x5x_priv {
 
 	struct tcan4x5x_map_buf map_buf_rx;
 	struct tcan4x5x_map_buf map_buf_tx;
+
+	bool nwkrq_voltage_vio;
 };
 
 static inline void

-- 
2.46.2
Re: [PATCH can-next v5 2/2] can: tcan4x5x: add option for selecting nWKRQ voltage
Posted by Sean Nyekjaer 4 days, 14 hours ago 
Hi Marc,

On Thu, Nov 14, 2024 at 10:14:50AM +0100, Sean Nyekjaer wrote:
> The nWKRQ pin supports an output voltage of either the internal reference
> voltage (3.6V) or the reference voltage of
> the digital interface 0-6V (VIO).
> Add the devicetree option ti,nwkrq-voltage-vio to set it to VIO.
> 
> If this property is omitted the reset default, the internal reference
> voltage, is used.
> 
> Signed-off-by: Sean Nyekjaer <sean@geanix.com>
> Reviewed-by: Marc Kleine-Budde <mkl@pengutronix.de>
> Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
> ---
>  drivers/net/can/m_can/tcan4x5x-core.c | 20 ++++++++++++++++++++
>  drivers/net/can/m_can/tcan4x5x.h      |  2 ++
>  2 files changed, 22 insertions(+)
> 
> diff --git a/drivers/net/can/m_can/tcan4x5x-core.c b/drivers/net/can/m_can/tcan4x5x-core.c
> index 2f73bf3abad889c222f15c39a3d43de1a1cf5fbb..7213d9894c82d079bf92f1ec62d4eebb500cdfa4 100644
> --- a/drivers/net/can/m_can/tcan4x5x-core.c
> +++ b/drivers/net/can/m_can/tcan4x5x-core.c
> @@ -92,6 +92,8 @@
>  #define TCAN4X5X_MODE_STANDBY BIT(6)
>  #define TCAN4X5X_MODE_NORMAL BIT(7)
>  
> +#define TCAN4X5X_NWKRQ_VOLTAGE_VIO BIT(19)
> +
>  #define TCAN4X5X_DISABLE_WAKE_MSK	(BIT(31) | BIT(30))
>  #define TCAN4X5X_DISABLE_INH_MSK	BIT(9)
>  
> @@ -267,6 +269,13 @@ static int tcan4x5x_init(struct m_can_classdev *cdev)
>  	if (ret)
>  		return ret;
>  
> +	if (tcan4x5x->nwkrq_voltage_vio) {
> +		ret = regmap_set_bits(tcan4x5x->regmap, TCAN4X5X_CONFIG,
> +				      TCAN4X5X_NWKRQ_VOLTAGE_VIO);
> +		if (ret)
> +			return ret;
> +	}
> +
>  	return ret;
>  }
>  
> @@ -318,6 +327,15 @@ static const struct tcan4x5x_version_info
>  	return &tcan4x5x_versions[TCAN4X5X];
>  }
>  
> +static void tcan4x5x_get_dt_data(struct m_can_classdev *cdev)
> +{
> +	struct tcan4x5x_priv *tcan4x5x = cdev_to_priv(cdev);
> +	struct device_node *np = cdev->dev->of_node;

Guess we can remove this line. Sorry

> +
> +	tcan4x5x->nwkrq_voltage_vio =
> +		of_property_read_bool(cdev->dev->of_node, "ti,nwkrq-voltage-vio");
> +}
> +
>  static int tcan4x5x_get_gpios(struct m_can_classdev *cdev,
>  			      const struct tcan4x5x_version_info *version_info)
>  {
> @@ -453,6 +471,8 @@ static int tcan4x5x_can_probe(struct spi_device *spi)
>  		goto out_power;
>  	}
>  
> +	tcan4x5x_get_dt_data(mcan_class);
> +
>  	tcan4x5x_check_wake(priv);
>  
>  	ret = tcan4x5x_write_tcan_reg(mcan_class, TCAN4X5X_INT_EN, 0);
> diff --git a/drivers/net/can/m_can/tcan4x5x.h b/drivers/net/can/m_can/tcan4x5x.h
> index e62c030d3e1e5a713c997e7c8ecad4a44aff4e6a..203399d5e8ccf3fd7a26b54d8356fca9d398524c 100644
> --- a/drivers/net/can/m_can/tcan4x5x.h
> +++ b/drivers/net/can/m_can/tcan4x5x.h
> @@ -42,6 +42,8 @@ struct tcan4x5x_priv {
>  
>  	struct tcan4x5x_map_buf map_buf_rx;
>  	struct tcan4x5x_map_buf map_buf_tx;
> +
> +	bool nwkrq_voltage_vio;
>  };
>  
>  static inline void
> 
> -- 
> 2.46.2
> 

/Sean
Re: [PATCH can-next v5 2/2] can: tcan4x5x: add option for selecting nWKRQ voltage
Posted by Marc Kleine-Budde 4 days, 14 hours ago 
On 18.11.2024 16:05:42, Sean Nyekjaer wrote:
> Hi Marc,
> 
> On Thu, Nov 14, 2024 at 10:14:50AM +0100, Sean Nyekjaer wrote:
> > The nWKRQ pin supports an output voltage of either the internal reference
> > voltage (3.6V) or the reference voltage of
> > the digital interface 0-6V (VIO).
> > Add the devicetree option ti,nwkrq-voltage-vio to set it to VIO.
> > 
> > If this property is omitted the reset default, the internal reference
> > voltage, is used.
> > 
> > Signed-off-by: Sean Nyekjaer <sean@geanix.com>
> > Reviewed-by: Marc Kleine-Budde <mkl@pengutronix.de>
> > Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
> > ---
> >  drivers/net/can/m_can/tcan4x5x-core.c | 20 ++++++++++++++++++++
> >  drivers/net/can/m_can/tcan4x5x.h      |  2 ++
> >  2 files changed, 22 insertions(+)
> > 
> > diff --git a/drivers/net/can/m_can/tcan4x5x-core.c b/drivers/net/can/m_can/tcan4x5x-core.c
> > index 2f73bf3abad889c222f15c39a3d43de1a1cf5fbb..7213d9894c82d079bf92f1ec62d4eebb500cdfa4 100644
> > --- a/drivers/net/can/m_can/tcan4x5x-core.c
> > +++ b/drivers/net/can/m_can/tcan4x5x-core.c
> > @@ -92,6 +92,8 @@
> >  #define TCAN4X5X_MODE_STANDBY BIT(6)
> >  #define TCAN4X5X_MODE_NORMAL BIT(7)
> >  
> > +#define TCAN4X5X_NWKRQ_VOLTAGE_VIO BIT(19)
> > +
> >  #define TCAN4X5X_DISABLE_WAKE_MSK	(BIT(31) | BIT(30))
> >  #define TCAN4X5X_DISABLE_INH_MSK	BIT(9)
> >  
> > @@ -267,6 +269,13 @@ static int tcan4x5x_init(struct m_can_classdev *cdev)
> >  	if (ret)
> >  		return ret;
> >  
> > +	if (tcan4x5x->nwkrq_voltage_vio) {
> > +		ret = regmap_set_bits(tcan4x5x->regmap, TCAN4X5X_CONFIG,
> > +				      TCAN4X5X_NWKRQ_VOLTAGE_VIO);
> > +		if (ret)
> > +			return ret;
> > +	}
> > +
> >  	return ret;
> >  }
> >  
> > @@ -318,6 +327,15 @@ static const struct tcan4x5x_version_info
> >  	return &tcan4x5x_versions[TCAN4X5X];
> >  }
> >  
> > +static void tcan4x5x_get_dt_data(struct m_can_classdev *cdev)
> > +{
> > +	struct tcan4x5x_priv *tcan4x5x = cdev_to_priv(cdev);
> > +	struct device_node *np = cdev->dev->of_node;
> 
> Guess we can remove this line. Sorry

ACK. Will fixup here.

Marc

-- 
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