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authorRussell King <rmk+kernel@armlinux.org.uk>2021-02-05 10:39:59 +0000
committerJakub Kicinski <kuba@kernel.org>2021-02-06 14:35:21 -0800
commit694a0006c0b15ed22aa53dc4b244d64c5f12e45e (patch)
tree6bde5ac36d8b9068b0097e286a5590dda8dcebb9 /drivers/net/pcs
parent8cc8993cbcee7dd4a8763e70ef46aba327dcac00 (diff)
net: pcs: add pcs-lynx 1000BASE-X support
Add support for 1000BASE-X to pcs-lynx for the LX2160A. This commit prepares the ground work for allowing 1G fiber connections to be used with DPAA2 on the SolidRun CEX7 platforms. Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/pcs')
-rw-r--r--drivers/net/pcs/pcs-lynx.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/net/pcs/pcs-lynx.c b/drivers/net/pcs/pcs-lynx.c
index 62bb9272dcb2..af36cd647bf5 100644
--- a/drivers/net/pcs/pcs-lynx.c
+++ b/drivers/net/pcs/pcs-lynx.c
@@ -11,6 +11,7 @@
#define LINK_TIMER_VAL(ns) ((u32)((ns) / SGMII_CLOCK_PERIOD_NS))
#define SGMII_AN_LINK_TIMER_NS 1600000 /* defined by SGMII spec */
+#define IEEE8023_LINK_TIMER_NS 10000000
#define LINK_TIMER_LO 0x12
#define LINK_TIMER_HI 0x13
@@ -83,6 +84,7 @@ static void lynx_pcs_get_state(struct phylink_pcs *pcs,
struct lynx_pcs *lynx = phylink_pcs_to_lynx(pcs);
switch (state->interface) {
+ case PHY_INTERFACE_MODE_1000BASEX:
case PHY_INTERFACE_MODE_SGMII:
case PHY_INTERFACE_MODE_QSGMII:
phylink_mii_c22_pcs_get_state(lynx->mdio, state);
@@ -108,6 +110,30 @@ static void lynx_pcs_get_state(struct phylink_pcs *pcs,
state->link, state->an_enabled, state->an_complete);
}
+static int lynx_pcs_config_1000basex(struct mdio_device *pcs,
+ unsigned int mode,
+ const unsigned long *advertising)
+{
+ struct mii_bus *bus = pcs->bus;
+ int addr = pcs->addr;
+ u32 link_timer;
+ int err;
+
+ link_timer = LINK_TIMER_VAL(IEEE8023_LINK_TIMER_NS);
+ mdiobus_write(bus, addr, LINK_TIMER_LO, link_timer & 0xffff);
+ mdiobus_write(bus, addr, LINK_TIMER_HI, link_timer >> 16);
+
+ err = mdiobus_modify(bus, addr, IF_MODE,
+ IF_MODE_SGMII_EN | IF_MODE_USE_SGMII_AN,
+ 0);
+ if (err)
+ return err;
+
+ return phylink_mii_c22_pcs_config(pcs, mode,
+ PHY_INTERFACE_MODE_1000BASEX,
+ advertising);
+}
+
static int lynx_pcs_config_sgmii(struct mdio_device *pcs, unsigned int mode,
const unsigned long *advertising)
{
@@ -163,6 +189,8 @@ static int lynx_pcs_config(struct phylink_pcs *pcs, unsigned int mode,
struct lynx_pcs *lynx = phylink_pcs_to_lynx(pcs);
switch (ifmode) {
+ case PHY_INTERFACE_MODE_1000BASEX:
+ return lynx_pcs_config_1000basex(lynx->mdio, mode, advertising);
case PHY_INTERFACE_MODE_SGMII:
case PHY_INTERFACE_MODE_QSGMII:
return lynx_pcs_config_sgmii(lynx->mdio, mode, advertising);
@@ -185,6 +213,13 @@ static int lynx_pcs_config(struct phylink_pcs *pcs, unsigned int mode,
return 0;
}
+static void lynx_pcs_an_restart(struct phylink_pcs *pcs)
+{
+ struct lynx_pcs *lynx = phylink_pcs_to_lynx(pcs);
+
+ phylink_mii_c22_pcs_an_restart(lynx->mdio);
+}
+
static void lynx_pcs_link_up_sgmii(struct mdio_device *pcs, unsigned int mode,
int speed, int duplex)
{
@@ -290,6 +325,7 @@ static void lynx_pcs_link_up(struct phylink_pcs *pcs, unsigned int mode,
static const struct phylink_pcs_ops lynx_pcs_phylink_ops = {
.pcs_get_state = lynx_pcs_get_state,
.pcs_config = lynx_pcs_config,
+ .pcs_an_restart = lynx_pcs_an_restart,
.pcs_link_up = lynx_pcs_link_up,
};