The RGMII device tree conflicts with the ethernet driver in

u-boot. Hence, me and Benjamin decided to leave out support for
RGMII from u-boot on the panther devices.

iopsys-brcm63xx-arm/panther/bsp-patches/0001-Disable-EXT1-RGMII-in-u-boot-for-panther-devices.patch

+From a09e39ab4af6101a4d5a8668d451fb7f3e488f01 Mon Sep 17 00:00:00 2001
+From: Markus Gothe <markus.gothe@genexis.eu>
+Date: Tue, 22 Jun 2021 11:41:51 +0200
+Subject: [PATCH] Disable EXT1/RGMII in u-boot for panther devices. The driver
+ is not working and breaks the expected behaviour.
+
+---
+ .../u-boot-2019.07/drivers/net/bcmbca/phy/Makefile        | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+diff --git a/bcm963xx/bootloaders/u-boot-2019.07/drivers/net/bcmbca/phy/Makefile b/bcm963xx/bootloaders/u-boot-2019.07/drivers/net/bcmbca/phy/Makefile
+index d670f53d0..e7d28a0ff 100644
+--- a/bcm963xx/bootloaders/u-boot-2019.07/drivers/net/bcmbca/phy/Makefile
++++ b/bcm963xx/bootloaders/u-boot-2019.07/drivers/net/bcmbca/phy/Makefile
+@@ -57,11 +57,11 @@ ifeq ($(strip ${BRCM_CHIP}),6846)
+     DRV_OBJS += bus_drv_mdio_v1.o
+     DRV_OBJS += mac_drv_unimac.o
+     DRV_OBJS += phy_drv_6846_egphy.o
+-    DRV_OBJS += phy_drv_ext1.o
+-    DRV_OBJS += brcm_rgmii.o
+-    EXTRA_CFLAGS += -DBRCM_RGMII
++    #DRV_OBJS += phy_drv_ext1.o
++    #DRV_OBJS += brcm_rgmii.o
++    #EXTRA_CFLAGS += -DBRCM_RGMII
+     EXTRA_CFLAGS += -DMAC_UNIMAC
+-    EXTRA_CFLAGS += -DPHY_6846_EGPHY -DPHY_EXT1
++    EXTRA_CFLAGS += -DPHY_6846_EGPHY #-DPHY_EXT1
+ endif
+ ifeq ($(strip ${BRCM_CHIP}),6878)
+     DRV_OBJS += mdio_drv_common.o
+-- 
+2.32.0
+

iopsys-brcm63xx-arm/panther/bsp-patches/0002-Force-full-duplex-on-RGMII.patch

+From 9892a67806ca56e453afb9c314a04249006d0d15 Mon Sep 17 00:00:00 2001
+From: Markus Gothe <markus.gothe@genexis.eu>
+Date: Tue, 22 Jun 2021 14:27:31 +0200
+Subject: [PATCH] Force full duplex on RGMII.
+
+---
+ bcm963xx/bcmdrivers/opensource/phy/phy_drv_ext1.c | 13 ++++++++++++-
+ 1 file changed, 12 insertions(+), 1 deletion(-)
+
+diff --git a/bcm963xx/bcmdrivers/opensource/phy/phy_drv_ext1.c b/bcm963xx/bcmdrivers/opensource/phy/phy_drv_ext1.c
+index 99f60ce45..496239d49 100644
+--- a/bcm963xx/bcmdrivers/opensource/phy/phy_drv_ext1.c
++++ b/bcm963xx/bcmdrivers/opensource/phy/phy_drv_ext1.c
+@@ -69,6 +69,17 @@ Exit:
+     return ret;
+ }
+ 
++static int _brcm_read_status(phy_dev_t *phy_dev)
++{
++    phy_dev->pause_rx = 0;
++    phy_dev->pause_tx = 0;
++    phy_dev->speed = PHY_SPEED_1000;
++    phy_dev->duplex = PHY_DUPLEX_FULL;
++    phy_dev->link = 1;
++
++    return 0;
++}
++
+ phy_drv_t phy_drv_ext1 =
+ {
+     .phy_type = PHY_TYPE_EXT1,
+@@ -77,7 +88,7 @@ phy_drv_t phy_drv_ext1 =
+     .power_set = mii_power_set,
+     .apd_get = brcm_shadow_1c_apd_get,
+     .apd_set = brcm_shadow_1c_apd_set,
+-    .read_status = brcm_read_status,
++    .read_status = _brcm_read_status,
+     .speed_set = mii_speed_set,
+     .caps_get = mii_caps_get,
+     .caps_set = mii_caps_set,
+-- 
+2.32.0
+

iopsys-brcm63xx-arm/panther/bsp-patches/series

+0001-Disable-EXT1-RGMII-in-u-boot-for-panther-devices.patch
+0002-Force-full-duplex-on-RGMII.patch