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@xxxxxxxxxx>
> Reviewed-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
> Reviewed-by: Vincent Mailhol <mailhol.vincent@xxxxxxxxxx>
> ---
> 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
