[PULL 20/21] fsl-imx7: Add fec[12]-phy-connected properties

[Peter Maydell <peter.maydell@linaro.org>]

From: Guenter Roeck <linux@roeck-us.net>

Add fec[12]-phy-connected properties and use it to set phy-connected
and phy-consumer properties for imx_fec.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Message-id: 20230315145248.1639364-5-linux@roeck-us.net
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 include/hw/arm/fsl-imx7.h |  1 +
 hw/arm/fsl-imx7.c         | 20 ++++++++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/include/hw/arm/fsl-imx7.h b/include/hw/arm/fsl-imx7.h
index 355bd8ea838..54ea2f0890a 100644
--- a/include/hw/arm/fsl-imx7.h
+++ b/include/hw/arm/fsl-imx7.h
@@ -82,6 +82,7 @@ struct FslIMX7State {
     ChipideaState      usb[FSL_IMX7_NUM_USBS];
     DesignwarePCIEHost pcie;
     uint32_t           phy_num[FSL_IMX7_NUM_ETHS];
+    bool               phy_connected[FSL_IMX7_NUM_ETHS];
 };
 
 enum FslIMX7MemoryMap {
diff --git a/hw/arm/fsl-imx7.c b/hw/arm/fsl-imx7.c
index afc74807990..9e41d4b6772 100644
--- a/hw/arm/fsl-imx7.c
+++ b/hw/arm/fsl-imx7.c
@@ -395,7 +395,23 @@ static void fsl_imx7_realize(DeviceState *dev, Error **errp)
 
     /*
      * Ethernet
+     *
+     * We must use two loops since phy_connected affects the other interface
+     * and we have to set all properties before calling sysbus_realize().
      */
+    for (i = 0; i < FSL_IMX7_NUM_ETHS; i++) {
+        object_property_set_bool(OBJECT(&s->eth[i]), "phy-connected",
+                                 s->phy_connected[i], &error_abort);
+        /*
+         * If the MDIO bus on this controller is not connected, assume the
+         * other controller provides support for it.
+         */
+        if (!s->phy_connected[i]) {
+            object_property_set_link(OBJECT(&s->eth[1 - i]), "phy-consumer",
+                                     OBJECT(&s->eth[i]), &error_abort);
+        }
+    }
+
     for (i = 0; i < FSL_IMX7_NUM_ETHS; i++) {
         static const hwaddr FSL_IMX7_ENETn_ADDR[FSL_IMX7_NUM_ETHS] = {
             FSL_IMX7_ENET1_ADDR,
@@ -601,6 +617,10 @@ static void fsl_imx7_realize(DeviceState *dev, Error **errp)
 static Property fsl_imx7_properties[] = {
     DEFINE_PROP_UINT32("fec1-phy-num", FslIMX7State, phy_num[0], 0),
     DEFINE_PROP_UINT32("fec2-phy-num", FslIMX7State, phy_num[1], 1),
+    DEFINE_PROP_BOOL("fec1-phy-connected", FslIMX7State, phy_connected[0],
+                     true),
+    DEFINE_PROP_BOOL("fec2-phy-connected", FslIMX7State, phy_connected[1],
+                     true),
     DEFINE_PROP_END_OF_LIST(),
 };
 
-- 
2.34.1