diff options
| author | Arun Ramadoss <arun.ramadoss@microchip.com> | 2022-07-24 14:58:19 +0530 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-07-27 09:39:17 +0100 |
| commit | dc1c596edba5e656256c2d6e6922246c7803f2de (patch) | |
| tree | d84b2d1e49286f9c41a99293ddcc46dd167e5ef8 /drivers/net/dsa/microchip/ksz_common.c | |
| parent | da8cd08520f3abac9ff288136b70ea991e1ec6ab (diff) | |
| download | linux-dc1c596edba5e656256c2d6e6922246c7803f2de.tar.bz2 | |
net: dsa: microchip: lan937x: add support for configuing xMII register
This patch add the common ksz_set_xmii function for ksz series switch
and update the lan937x code phylink mac config. The register address for
the ksz8795 is Port 5 Interface control 6 and for all other switch is
xMII Control 1.
The bit value for selecting the interface is same for
KSZ8795 and KSZ9893 are same. The bit values for KSZ9477 and lan973x are
same. So, this patch add the bit value for each switches in
ksz_chip_data and configure the registers based on the chip id.
Signed-off-by: Arun Ramadoss <arun.ramadoss@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/dsa/microchip/ksz_common.c')
| -rw-r--r-- | drivers/net/dsa/microchip/ksz_common.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c index bcf61f815e11..39b83b4d02ed 100644 --- a/drivers/net/dsa/microchip/ksz_common.c +++ b/drivers/net/dsa/microchip/ksz_common.c @@ -292,6 +292,10 @@ static const u8 ksz8795_xmii_ctrl0[] = { }; static const u8 ksz8795_xmii_ctrl1[] = { + [P_RGMII_SEL] = 3, + [P_GMII_SEL] = 2, + [P_RMII_SEL] = 1, + [P_MII_SEL] = 0, [P_GMII_1GBIT] = 1, [P_GMII_NOT_1GBIT] = 0, }; @@ -389,6 +393,10 @@ static const u8 ksz9477_xmii_ctrl0[] = { }; static const u8 ksz9477_xmii_ctrl1[] = { + [P_RGMII_SEL] = 0, + [P_RMII_SEL] = 1, + [P_GMII_SEL] = 2, + [P_MII_SEL] = 3, [P_GMII_1GBIT] = 0, [P_GMII_NOT_1GBIT] = 1, }; @@ -1400,6 +1408,42 @@ static int ksz_max_mtu(struct dsa_switch *ds, int port) return dev->dev_ops->max_mtu(dev, port); } +void ksz_set_xmii(struct ksz_device *dev, int port, phy_interface_t interface) +{ + const u8 *bitval = dev->info->xmii_ctrl1; + const u16 *regs = dev->info->regs; + u8 data8; + + ksz_pread8(dev, port, regs[P_XMII_CTRL_1], &data8); + + data8 &= ~P_MII_SEL_M; + + switch (interface) { + case PHY_INTERFACE_MODE_MII: + data8 |= bitval[P_MII_SEL]; + break; + case PHY_INTERFACE_MODE_RMII: + data8 |= bitval[P_RMII_SEL]; + break; + case PHY_INTERFACE_MODE_GMII: + data8 |= bitval[P_GMII_SEL]; + break; + case PHY_INTERFACE_MODE_RGMII: + case PHY_INTERFACE_MODE_RGMII_ID: + case PHY_INTERFACE_MODE_RGMII_TXID: + case PHY_INTERFACE_MODE_RGMII_RXID: + data8 |= bitval[P_RGMII_SEL]; + break; + default: + dev_err(dev->dev, "Unsupported interface '%s' for port %d\n", + phy_modes(interface), port); + return; + } + + /* Write the updated value */ + ksz_pwrite8(dev, port, regs[P_XMII_CTRL_1], data8); +} + static void ksz_phylink_mac_config(struct dsa_switch *ds, int port, unsigned int mode, const struct phylink_link_state *state) |