mips: dts: ralink: add MT7621 SoC

The MT7621 system-on-a-chip includes an 880 MHz MIPS1004Kc dual-core CPU,
a 5-port 10/100/1000 switch/PHY and one RGMII.

Add the devicetrees for GB-PC1 and GB-PC2 devices which use MT7621 SoC.
Acked-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Link: https://lore.kernel.org/r/20220315160149.3617-1-arinc.unal@arinc9.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

MAINTAINERS

@@ -16180,6 +16180,13 @@ L:	linux-mips@vger.kernel.org
 S:	Maintained
 F:	arch/mips/ralink
 
+RALINK MT7621 MIPS ARCHITECTURE
+M:	Arınç ÜNAL <arinc.unal@arinc9.com>
+M:	Sergio Paracuellos <sergio.paracuellos@gmail.com>
+L:	linux-mips@vger.kernel.org
+S:	Maintained
+F:	arch/mips/boot/dts/ralink/mt7621*
+
 RALINK RT2X00 WIRELESS LAN DRIVER
 M:	Stanislaw Gruszka <stf_xl@wp.pl>
 M:	Helmut Schaa <helmut.schaa@googlemail.com>

arch/mips/boot/dts/ralink/Makefile

@@ -6,4 +6,8 @@ dtb-$(CONFIG_DTB_MT7620A_EVAL)	+= mt7620a_eval.dtb
 dtb-$(CONFIG_DTB_OMEGA2P)	+= omega2p.dtb
 dtb-$(CONFIG_DTB_VOCORE2)	+= vocore2.dtb
 
+dtb-$(CONFIG_SOC_MT7621) += \
+	mt7621-gnubee-gb-pc1.dtb \
+	mt7621-gnubee-gb-pc2.dtb
+
 obj-$(CONFIG_BUILTIN_DTB)	+= $(addsuffix .o, $(dtb-y))

arch/mips/ralink/Kconfig

@@ -54,10 +54,15 @@ choice
 		select HAVE_PCI
 		select PCI_DRIVERS_GENERIC
 		select SOC_BUS
+
+		help
+		  The MT7621 system-on-a-chip includes an 880 MHz MIPS1004Kc dual-core CPU,
+		  a 5-port 10/100/1000 switch/PHY and one RGMII.
 endchoice
 
 choice
 	prompt "Devicetree selection"
+	depends on !SOC_MT7621
 	default DTB_RT_NONE
 	help
 	  Select the devicetree.

drivers/staging/Kconfig

@@ -80,8 +80,6 @@ source "drivers/staging/vc04_services/Kconfig"
 
 source "drivers/staging/pi433/Kconfig"
 
-source "drivers/staging/mt7621-dts/Kconfig"
-
 source "drivers/staging/axis-fifo/Kconfig"
 
 source "drivers/staging/fieldbus/Kconfig"

drivers/staging/Makefile

@@ -30,7 +30,6 @@ obj-$(CONFIG_KS7010)		+= ks7010/
 obj-$(CONFIG_GREYBUS)		+= greybus/
 obj-$(CONFIG_BCM2835_VCHIQ)	+= vc04_services/
 obj-$(CONFIG_PI433)		+= pi433/
-obj-$(CONFIG_SOC_MT7621)	+= mt7621-dts/
 obj-$(CONFIG_XIL_AXIS_FIFO)	+= axis-fifo/
 obj-$(CONFIG_FIELDBUS_DEV)     += fieldbus/
 obj-$(CONFIG_QLGE)		+= qlge/

drivers/staging/mt7621-dts/Kconfig

-# SPDX-License-Identifier: GPL-2.0
-config DTB_GNUBEE1
-	bool "GnuBee1 2.5inch NAS"
-	depends on SOC_MT7621 && DTB_RT_NONE
-	select BUILTIN_DTB
-
-config DTB_GNUBEE2
-	bool "GnuBee2 3.5inch NAS"
-	depends on SOC_MT7621 && DTB_RT_NONE
-	select BUILTIN_DTB
-

drivers/staging/mt7621-dts/Makefile

-# SPDX-License-Identifier: GPL-2.0
-dtb-$(CONFIG_DTB_GNUBEE1)      += gbpc1.dtb
-dtb-$(CONFIG_DTB_GNUBEE2)      += gbpc2.dtb
-
-obj-y				+= $(patsubst %.dtb, %.dtb.o, $(dtb-y))

drivers/staging/mt7621-dts/TODO

-
-- ensure all usage matches code
-- ensure all features used are documented
-
-Cc: NeilBrown <neil@brown.name>