net: mvneta: Convert to use PHY_FIXED for fixed-link

Stop parsing fixed-link in the MAC driver. Instead support only PHY mode
and let the fixed PHY driver handle the fixed-link case.

Enable CONFIG_PHY_FIXED for mvneta boards that need it: Turris Omnia and
ESPRESSObin.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>

diff --git a/configs/mvebu_espressobin-88f3720_defconfig b/configs/mvebu_espressobin-88f3720_defconfig
index 37e4fdc..8d7d57f 100644 (file)
--- a/configs/mvebu_espressobin-88f3720_defconfig
+++ b/configs/mvebu_espressobin-88f3720_defconfig
@@ -74,6 +74,7 @@ CONFIG_SPI_FLASH_STMICRO=y
 CONFIG_SPI_FLASH_WINBOND=y
 CONFIG_SPI_FLASH_MTD=y
 CONFIG_PHY_MARVELL=y
+CONFIG_PHY_FIXED=y
 CONFIG_PHY_GIGE=y
 CONFIG_E1000=y
 CONFIG_MVNETA=y

diff --git a/configs/turris_omnia_defconfig b/configs/turris_omnia_defconfig
index 5e4f094..217e260 100644 (file)
--- a/configs/turris_omnia_defconfig
+++ b/configs/turris_omnia_defconfig
@@ -82,6 +82,7 @@ CONFIG_SPI_FLASH_MACRONIX=y
 CONFIG_SPI_FLASH_SPANSION=y
 CONFIG_SPI_FLASH_MTD=y
 CONFIG_PHY_MARVELL=y
+CONFIG_PHY_FIXED=y
 CONFIG_PHY_GIGE=y
 CONFIG_MVNETA=y
 CONFIG_MII=y

diff --git a/drivers/net/mvneta.c b/drivers/net/mvneta.c
index 519e06f..5b1c4fe 100644 (file)
--- a/drivers/net/mvneta.c
+++ b/drivers/net/mvneta.c
@@ -1152,11 +1152,6 @@ static void mvneta_adjust_link(struct udevice *dev)
        struct phy_device *phydev = pp->phydev;
        bool status_change = false;
 
-       if (pp->fixed_link) {
-               debug("Using fixed link, skip link adjust\n");
-               return;
-       }
-
        if (phydev->link &&
            (pp->speed != phydev->speed || pp->duplex != phydev->duplex)) {
                u32 val;
@@ -1168,6 +1163,21 @@ static void mvneta_adjust_link(struct udevice *dev)
                         MVNETA_GMAC_AN_SPEED_EN |
                         MVNETA_GMAC_AN_DUPLEX_EN);
 
+               /* FIXME: For fixed-link case, these were the initial settings
+                * used before the code was converted to use PHY_FIXED. Some of
+                * these may look nonsensical (for example BYPASS_AN makes sense
+                * for 1000base-x and 2500base-x modes, AFAIK), and in fact this
+                * may be changed in the future (when support for inband AN will
+                * be added). Also, why is ADVERT_FC enabled if we don't enable
+                * inband AN at all?
+                */
+               if (pp->fixed_link)
+                       val = MVNETA_GMAC_FORCE_LINK_UP |
+                             MVNETA_GMAC_IB_BYPASS_AN_EN |
+                             MVNETA_GMAC_SET_FC_EN |
+                             MVNETA_GMAC_ADVERT_FC_EN |
+                             MVNETA_GMAC_SAMPLE_TX_CFG_EN;
+
                if (phydev->duplex)
                        val |= MVNETA_GMAC_CONFIG_FULL_DUPLEX;
 
@@ -1413,56 +1423,34 @@ static int mvneta_start(struct udevice *dev)
        mvneta_port_power_up(pp, pp->phy_interface);
 
        if (!pp->init || pp->link == 0) {
-               if (pp->fixed_link) {
-                       u32 val;
-
-                       pp->init = 1;
-                       pp->link = 1;
-                       mvneta_init(dev);
-
-                       val = MVNETA_GMAC_FORCE_LINK_UP |
-                             MVNETA_GMAC_IB_BYPASS_AN_EN |
-                             MVNETA_GMAC_SET_FC_EN |
-                             MVNETA_GMAC_ADVERT_FC_EN |
-                             MVNETA_GMAC_SAMPLE_TX_CFG_EN;
-
-                       if (pp->duplex)
-                               val |= MVNETA_GMAC_CONFIG_FULL_DUPLEX;
-
-                       if (pp->speed == SPEED_1000)
-                               val |= MVNETA_GMAC_CONFIG_GMII_SPEED;
-                       else if (pp->speed == SPEED_100)
-                               val |= MVNETA_GMAC_CONFIG_MII_SPEED;
+               phydev = dm_eth_phy_connect(dev);
+               if (!phydev) {
+                       printf("dm_eth_phy_connect failed\n");
+                       return -ENODEV;
+               }
 
-                       mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, val);
-               } else {
-                       phydev = dm_eth_phy_connect(dev);
-                       if (!phydev) {
-                               printf("dm_eth_phy_connect failed\n");
-                               return -ENODEV;
-                       }
+               pp->fixed_link = phydev->phy_id == PHY_FIXED_ID;
 
-                       /* Set PHY address in case we will enable HW polling */
+               /* Set PHY address in case we will enable HW polling */
+               if (!pp->fixed_link)
                        mvreg_write(pp, MVNETA_PHY_ADDR, phydev->addr);
 
-                       pp->phydev = phydev;
-                       phy_config(phydev);
-                       phy_startup(phydev);
-                       if (!phydev->link) {
-                               printf("%s: No link.\n", phydev->dev->name);
-                               return -1;
-                       }
-
-                       /* Full init on first call */
-                       mvneta_init(dev);
-                       pp->init = 1;
-                       return 0;
+               pp->phydev = phydev;
+               phy_config(phydev);
+               phy_startup(phydev);
+               if (!phydev->link) {
+                       printf("%s: No link.\n", phydev->dev->name);
+                       return -1;
                }
-       }
 
-       /* Upon all following calls, this is enough */
-       mvneta_port_up(pp);
-       mvneta_port_enable(pp);
+               /* Full init on first call */
+               mvneta_init(dev);
+               pp->init = 1;
+       } else {
+               /* Upon all following calls, this is enough */
+               mvneta_port_up(pp);
+               mvneta_port_enable(pp);
+       }
 
        return 0;
 }
@@ -1560,10 +1548,7 @@ static int mvneta_probe(struct udevice *dev)
 #if CONFIG_IS_ENABLED(DM_GPIO)
        struct ofnode_phandle_args sfp_args;
 #endif
-       void *blob = (void *)gd->fdt_blob;
-       int node = dev_of_offset(dev);
        void *bd_space;
-       int fl_node;
 
        /*
         * Allocate buffer area for descs and rx_buffers. This is only
@@ -1600,15 +1585,6 @@ static int mvneta_probe(struct udevice *dev)
        else
                mvneta_conf_mbus_windows(pp);
 
-       /* fetch 'fixed-link' property from 'neta' node */
-       fl_node = fdt_subnode_offset(blob, node, "fixed-link");
-       if (fl_node != -FDT_ERR_NOTFOUND) {
-               /* set phy_addr to invalid value for fixed link */
-               pp->duplex = fdtdec_get_bool(blob, fl_node, "full-duplex");
-               pp->speed = fdtdec_get_int(blob, fl_node, "speed", 0);
-               pp->fixed_link = true;
-       }
-
 #if CONFIG_IS_ENABLED(DM_GPIO)
        if (!dev_read_phandle_with_args(dev, "sfp", NULL, 0, 0, &sfp_args) &&
            ofnode_is_enabled(sfp_args.node))