[PATCH v1 01/10] ARM: introduce ARCH_MICROCHIP for ARM64 Microchip SoCs

[Oleksij Rempel <o.rempel@pengutronix.de>]

Add the ARCH_MICROCHIP top-level symbol so subsequent peripheral
driver patches (atmel serial, atmel-sdhci, atmel-quadspi, ...) can
gain ARCH_MICROCHIP as a build dependency.

This SoC architecture covers Microchip's ARM64 switch SoCs, starting
with the LAN969X family. ARM32 Microchip/Atmel SoCs (AT91, SAMA5)
continue to use ARCH_AT91.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
---
 arch/arm/Kconfig | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index cb6652001546..5fdec7159827 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -265,6 +265,20 @@ config ARCH_ZYNQMP
 	select GPIOLIB
 	select HAS_MACB
 
+config ARCH_MICROCHIP
+	bool "Microchip ARM64 SoC support"
+	depends on ARCH_MULTIARCH
+	depends on 64BIT
+	select OFDEVICE
+	select COMMON_CLK_OF_PROVIDER
+	select PINCTRL
+	select GPIOLIB
+	help
+	  This enables support for Microchip ARM64-based SoCs,
+	  including the LAN969X Ethernet switch family.
+
+	  For ARM32 Microchip/Atmel SoCs (AT91, SAMA5), use ARCH_AT91.
+
 source "arch/arm/cpu/Kconfig"
 source "arch/arm/mach-at91/Kconfig"
 source "arch/arm/mach-bcm283x/Kconfig"
-- 
2.47.3