arm64: dts: mediatek: mt7988a-bpi-r4: allow hw variants of bpi-r4

Sinovoip has released other variants of Bananapi-R4 board.
The known changes affecting only the LAN SFP+ slot which is replaced
by a 2.5G phy with optional PoE.

Just move the common parts to a new dtsi and keep differences (only
i2c for lan-sfp) in dts.

Signed-off-by: Frank Wunderlich <[email protected]>
Acked-by: Krzysztof Kozlowski <[email protected]>
Reviewed-by: AngeloGioacchino Del Regno <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: AngeloGioacchino Del Regno <[email protected]>

Author: frank-w

arch/arm64/boot/dts/mediatek/Makefile

@@ -22,6 +22,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-bananapi-bpi-r3-sd.dtbo
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-rfb.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986b-rfb.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt7988a-bananapi-bpi-r4.dtb
+dtb-$(CONFIG_ARCH_MEDIATEK) += mt7988a-bananapi-bpi-r4-2g5.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt7988a-bananapi-bpi-r4-emmc.dtbo
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt7988a-bananapi-bpi-r4-sd.dtbo
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8167-pumpkin.dtb
@@ -109,4 +110,5 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt8516-pumpkin.dtb
 DTC_FLAGS_mt7986a-bananapi-bpi-r3 := -@
 DTC_FLAGS_mt7986a-bananapi-bpi-r3-mini := -@
 DTC_FLAGS_mt7988a-bananapi-bpi-r4 := -@
+DTC_FLAGS_mt7988a-bananapi-bpi-r4-2g5 := -@
 DTC_FLAGS_mt8395-radxa-nio-12l := -@

arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4-2g5.dts

@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+
+/dts-v1/;
+
+#include "mt7988a-bananapi-bpi-r4.dtsi"
+
+/ {
+	compatible = "bananapi,bpi-r4-2g5", "bananapi,bpi-r4", "mediatek,mt7988a";
+	model = "Banana Pi BPI-R4 (1x SFP+, 1x 2.5GbE)";
+	chassis-type = "embedded";
+};