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net: dsa: LAN9303: Add basic support for LAN9354

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Adding support for the LAN9354 device by allowing it to use
the LAN9303 DSA driver.  These devices have the same underlying
access and control methods and from a feature set point of view
the LAN9354 is a superset of the LAN9303.

The MDIO access method has been tested on a SAMA5D3-EDS board
with a LAN9354 RMII daughter card.

While the SPI access method should also be the same, it has not
been tested and as such is not included at this time.

Signed-off-by: Jerry Ray <jerry.ray@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jerry Ray 2022-09-02 16:30:21 -05:00 committed by David S. Miller
parent 732f374e23
commit 13248b9750
3 changed files with 12 additions and 6 deletions
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6
drivers/net/dsa/Kconfig
View File

@ -76,7 +76,7 @@ config NET_DSA_SMSC_LAN9303
select NET_DSA_TAG_LAN9303
select REGMAP
help
This enables support for the SMSC/Microchip LAN9303 3 port ethernet
This enables support for the Microchip LAN9303/LAN9354 3 port ethernet
switch chips.
config NET_DSA_SMSC_LAN9303_I2C
@ -90,11 +90,11 @@ config NET_DSA_SMSC_LAN9303_I2C
for I2C managed mode.
config NET_DSA_SMSC_LAN9303_MDIO
tristate "SMSC/Microchip LAN9303 3-ports 10/100 ethernet switch in MDIO managed mode"
tristate "Microchip LAN9303/LAN9354 3-ports 10/100 ethernet switch in MDIO managed mode"
select NET_DSA_SMSC_LAN9303
depends on VLAN_8021Q || VLAN_8021Q=n
help
Enable access functions if the SMSC/Microchip LAN9303 is configured
Enable access functions if the Microchip LAN9303/LAN9354 is configured
for MDIO managed mode.
config NET_DSA_VITESSE_VSC73XX

11
drivers/net/dsa/lan9303-core.c
View File

@ -22,6 +22,10 @@
*/
#define LAN9303_CHIP_REV 0x14
# define LAN9303_CHIP_ID 0x9303
# define LAN9352_CHIP_ID 0x9352
# define LAN9353_CHIP_ID 0x9353
# define LAN9354_CHIP_ID 0x9354
# define LAN9355_CHIP_ID 0x9355
#define LAN9303_IRQ_CFG 0x15
# define LAN9303_IRQ_CFG_IRQ_ENABLE BIT(8)
# define LAN9303_IRQ_CFG_IRQ_POL BIT(4)
@ -855,8 +859,9 @@ static int lan9303_check_device(struct lan9303 *chip)
return ret;
}
if ((reg >> 16) != LAN9303_CHIP_ID) {
dev_err(chip->dev, "expecting LAN9303 chip, but found: %X\n",
if (((reg >> 16) != LAN9303_CHIP_ID) &&
((reg >> 16) != LAN9354_CHIP_ID)) {
dev_err(chip->dev, "unexpected device found: LAN%4.4X\n",
reg >> 16);
return -ENODEV;
}
@ -872,7 +877,7 @@ static int lan9303_check_device(struct lan9303 *chip)
if (ret)
dev_warn(chip->dev, "failed to disable switching %d\n", ret);
dev_info(chip->dev, "Found LAN9303 rev. %u\n", reg & 0xffff);
dev_info(chip->dev, "Found LAN%4.4X rev. %u\n", (reg >> 16), reg & 0xffff);
ret = lan9303_detect_phy_setup(chip);
if (ret) {

1
drivers/net/dsa/lan9303_mdio.c
View File

@ -158,6 +158,7 @@ static void lan9303_mdio_shutdown(struct mdio_device *mdiodev)
static const struct of_device_id lan9303_mdio_of_match[] = {
{ .compatible = "smsc,lan9303-mdio" },
{ .compatible = "microchip,lan9354-mdio" },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, lan9303_mdio_of_match);