[PATCH] sunxi: H6: Enable Ethernet on Orange Pi One Plus

[Anne Macedo]

Enable Ethernet on Orange Pi One Plus by using the correct phy for
Realtek RTL8211E instead of the Generic One. Also use CONFIG_MACPWR to
turn on ethernet on startup.

After this patch is applied, a few issues can be seen:

- there's still a PHY reset timed out error that doesn't seem to cause
  any impacts to the overall connection

- sometimes the emac driver times out after reset (yellow LED turns on
  and never blinks)

For future patches: for now, CONFIG_MACPWR is the only way to enable
Ethernet on boot. There's already code on the dts for using the 3v3-gmac
regulator. However, it is not probed on boot, so it only starts after a
"regulator status" command is issued.

More details about the troubleshooting on [1].

[1] https://lore.kernel.org/u-boot/4wsvwgy56e2xfgtvioru2tf2ofkqprlts36qggivxogww6pn5j@4jk63zxhzhag/

Signed-off-by: Anne Macedo <retpolanne at posteo.net>
---
 arch/arm/dts/sun50i-h6-orangepi-one-plus.dts | 2 +-
 configs/orangepi_one_plus_defconfig          | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/arm/dts/sun50i-h6-orangepi-one-plus.dts b/arch/arm/dts/sun50i-h6-orangepi-one-plus.dts
index 29a081e72a..6427c58f8a 100644
--- a/arch/arm/dts/sun50i-h6-orangepi-one-plus.dts
+++ b/arch/arm/dts/sun50i-h6-orangepi-one-plus.dts
@@ -37,7 +37,7 @@
 
 &mdio {
 	ext_rgmii_phy: ethernet-phy at 1 {
-		compatible = "ethernet-phy-ieee802.3-c22";
+		compatible = "ethernet-phy-id001c.c915", "ethernet-phy-ieee802.3-c22" ;
 		reg = <1>;
 	};
 };
diff --git a/configs/orangepi_one_plus_defconfig b/configs/orangepi_one_plus_defconfig
index aa5f540eb1..a1835492db 100644
--- a/configs/orangepi_one_plus_defconfig
+++ b/configs/orangepi_one_plus_defconfig
@@ -8,3 +8,7 @@ CONFIG_SUNXI_DRAM_H6_LPDDR3=y
 # CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_OHCI_HCD=y
+CONFIG_SUN8I_EMAC=y
+CONFIG_PHY_REALTEK=y
+CONFIG_PHY_ETHERNET_ID=y
+CONFIG_MACPWR="PD6"
-- 
2.41.0