This pull request contains Broadcom ARM64-based SoCs Device Tree changes

for 5.20, second part, please pull the following:
 
 - Rafal adds basic support for the BCM4912-based router Asus GT-AX6000,
   he also has ARCH_BCM4908 select ARCH_BCMBCA such that in the next cycle
   we can remove ARCH_BCM4908 and continue to have make oldconfig work.
   Finally he spells out what BCA means to make it clearer
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Merge tag 'arm-soc/for-5.20/devicetree-arm64-part2' of https://github.com/Broadcom/stblinux into arm/dt

This pull request contains Broadcom ARM64-based SoCs Device Tree changes
for 5.20, second part, please pull the following:

- Rafal adds basic support for the BCM4912-based router Asus GT-AX6000,
  he also has ARCH_BCM4908 select ARCH_BCMBCA such that in the next cycle
  we can remove ARCH_BCM4908 and continue to have make oldconfig work.
  Finally he spells out what BCA means to make it clearer

* tag 'arm-soc/for-5.20/devicetree-arm64-part2' of https://github.com/Broadcom/stblinux:
  arm64: bcmbca: Include full family name in Kconfig
  arm64: make ARCH_BCM4908 select ARCH_BCMBCA
  arm64: dts: Add base DTS file for bcmbca device Asus GT-AX6000

Link: https://lore.kernel.org/r/20220715221642.297536-3-f.fainelli@gmail.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm64/Kconfig.platforms

@@ -49,6 +49,7 @@ config ARCH_BCM2835
 
 config ARCH_BCM4908
 	bool "Broadcom BCM4908 family"
+	select ARCH_BCMBCA
 	select GPIOLIB
 	help
 	  This enables support for the Broadcom BCM4906, BCM4908 and
@@ -64,7 +65,7 @@ config ARCH_BCM_IPROC
 	  This enables support for Broadcom iProc based SoCs
 
 config ARCH_BCMBCA
-	bool "Broadcom Broadband SoC"
+	bool "Broadcom Broadband Carrier Access (BCA) origin SoC"
 	help
 	  Say Y if you intend to run the kernel on a Broadcom Broadband ARM-based
 	  BCA chipset.

arch/arm64/boot/dts/broadcom/bcmbca/Makefile

@@ -1,5 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
-dtb-$(CONFIG_ARCH_BCMBCA) += bcm94912.dtb \
+dtb-$(CONFIG_ARCH_BCMBCA) += \
+				bcm4912-asus-gt-ax6000.dtb \
+				bcm94912.dtb \
 				bcm963158.dtb \
 				bcm96858.dtb \
 				bcm963146.dtb \

arch/arm64/boot/dts/broadcom/bcmbca/bcm4912-asus-gt-ax6000.dts

@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+/dts-v1/;
+
+#include "bcm4912.dtsi"
+
+/ {
+	compatible = "asus,gt-ax6000", "brcm,bcm4912", "brcm,bcmbca";
+	model = "Asus GT-AX6000";
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x00 0x00 0x00 0x40000000>;
+	};
+};
+
+&uart0 {
+	status = "okay";
+};