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phy: phy-can-transceiver: Add support for TJA105{1,7} 

Support TJA105{1,7} which are a single channel high-speed CAN transceiver
with silent mode supported.

phy mode is not implemented as of now. silent settings are kept in
phy_power_on and phy_power_off. After phy mode is supported, the silent
settings could be moved to phy_set_mode.

Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Link: https://patch.msgid.link/20251001-can-v7-5-fad29efc3884@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Peng Fan 2025-10-01 21:22:36 +08:00 committed by Vinod Koul
parent d02a7eb129
commit b817f50592
1 changed files with 30 additions and 0 deletions
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30
drivers/phy/phy-can-transceiver.c
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@ -18,10 +18,12 @@ struct can_transceiver_data {
#define CAN_TRANSCEIVER_STB_PRESENT BIT(0)
#define CAN_TRANSCEIVER_EN_PRESENT BIT(1)
#define CAN_TRANSCEIVER_DUAL_CH BIT(2)
#define CAN_TRANSCEIVER_SILENT_PRESENT BIT(3)
};
struct can_transceiver_phy {
struct phy *generic_phy;
struct gpio_desc *silent_gpio;
struct gpio_desc *standby_gpio;
struct gpio_desc *enable_gpio;
struct can_transceiver_priv *priv;
@ -47,6 +49,7 @@ static int can_transceiver_phy_power_on(struct phy *phy)
return ret;
}
}
gpiod_set_value_cansleep(can_transceiver_phy->silent_gpio, 0);
gpiod_set_value_cansleep(can_transceiver_phy->standby_gpio, 0);
gpiod_set_value_cansleep(can_transceiver_phy->enable_gpio, 1);
@ -59,6 +62,7 @@ static int can_transceiver_phy_power_off(struct phy *phy)
struct can_transceiver_phy *can_transceiver_phy = phy_get_drvdata(phy);
struct can_transceiver_priv *priv = can_transceiver_phy->priv;
gpiod_set_value_cansleep(can_transceiver_phy->silent_gpio, 1);
gpiod_set_value_cansleep(can_transceiver_phy->standby_gpio, 1);
gpiod_set_value_cansleep(can_transceiver_phy->enable_gpio, 0);
if (priv->mux_state)
@ -85,6 +89,14 @@ static const struct can_transceiver_data tja1048_drvdata = {
.flags = CAN_TRANSCEIVER_STB_PRESENT | CAN_TRANSCEIVER_DUAL_CH,
};
static const struct can_transceiver_data tja1051_drvdata = {
.flags = CAN_TRANSCEIVER_SILENT_PRESENT | CAN_TRANSCEIVER_EN_PRESENT,
};
static const struct can_transceiver_data tja1057_drvdata = {
.flags = CAN_TRANSCEIVER_SILENT_PRESENT,
};
static const struct of_device_id can_transceiver_phy_ids[] = {
{
.compatible = "ti,tcan1042",
@ -98,6 +110,14 @@ static const struct of_device_id can_transceiver_phy_ids[] = {
.compatible = "nxp,tja1048",
.data = &tja1048_drvdata
},
{
.compatible = "nxp,tja1051",
.data = &tja1051_drvdata
},
{
.compatible = "nxp,tja1057",
.data = &tja1057_drvdata
},
{
.compatible = "nxp,tjr1443",
.data = &tcan1043_drvdata
@ -144,6 +164,7 @@ static int can_transceiver_phy_probe(struct platform_device *pdev)
const struct can_transceiver_data *drvdata;
const struct of_device_id *match;
struct phy *phy;
struct gpio_desc *silent_gpio;
struct gpio_desc *standby_gpio;
struct gpio_desc *enable_gpio;
struct mux_state *mux_state;
@ -203,7 +224,16 @@ static int can_transceiver_phy_probe(struct platform_device *pdev)
can_transceiver_phy->enable_gpio = enable_gpio;
}
if (drvdata->flags & CAN_TRANSCEIVER_SILENT_PRESENT) {
silent_gpio = devm_gpiod_get_index_optional(dev, "silent", i,
GPIOD_OUT_LOW);
if (IS_ERR(silent_gpio))
return PTR_ERR(silent_gpio);
can_transceiver_phy->silent_gpio = silent_gpio;
}
phy_set_drvdata(can_transceiver_phy->generic_phy, can_transceiver_phy);
}
phy_provider = devm_of_phy_provider_register(dev, can_transceiver_phy_xlate);