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--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -1899,5 +1899,13 @@ config RAVE_SP_CORE
Select this to get support for the Supervisory Processor
device found on several devices in RAVE line of hardware.
+config MFD_RB4XX_CPLD
+ tristate "CPLD driver for Mikrotik RB4xx series boards
+ select MFD_CORE
+ depends on ATH79 || COMPILE_TEST
+ help
+ Enables support for the CPLD chip (NAND & GPIO) on Mikrotik
+ Routerboard RB4xx series.
+
endmenu
endif
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -241,3 +241,4 @@ obj-$(CONFIG_MFD_SC27XX_PMIC) += sprd-sc
obj-$(CONFIG_RAVE_SP_CORE) += rave-sp.o
obj-$(CONFIG_MFD_ROHM_BD718XX) += rohm-bd718x7.o
+obj-$(CONFIG_MFD_RB4XX_CPLD) += rb4xx-cpld.o
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -1371,6 +1371,12 @@ config GPIO_XRA1403
help
GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
+config GPIO_RB4XX
+ tristate "GPIO expander for Mikrotik RB4xx series boards"
+ depends on MFD_RB4XX_CPLD
+ help
+ GPIO driver for Mikrotik Routerboard RB4xx series.
+
endmenu
menu "USB GPIO expanders"
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -159,3 +159,4 @@ obj-$(CONFIG_GPIO_ZEVIO) += gpio-zevio.o
obj-$(CONFIG_GPIO_ZYNQ) += gpio-zynq.o
obj-$(CONFIG_GPIO_ZX) += gpio-zx.o
obj-$(CONFIG_GPIO_LOONGSON1) += gpio-loongson1.o
+obj-$(CONFIG_GPIO_RB4XX) += gpio-rb4xx.o
--- a/drivers/mtd/nand/raw/Kconfig
+++ b/drivers/mtd/nand/raw/Kconfig
@@ -569,4 +569,11 @@ config MTD_NAND_AR934X
Enables support for NAND controller on Qualcomm Atheros SoCs.
This controller is found on AR934x and QCA955x SoCs.
+config MTD_NAND_RB4XX
+ tristate "Support for NAND driver for Mikrotik RB4xx series boards"
+ depends on MFD_RB4XX_CPLD
+ help
+ Enables support for the NAND flash chip on Mikrotik Routerboard
+ RB4xx series.
+
endif # MTD_NAND
--- a/drivers/mtd/nand/raw/Makefile
+++ b/drivers/mtd/nand/raw/Makefile
@@ -58,6 +58,7 @@ obj-$(CONFIG_MTD_NAND_QCOM) += qcom_nan
obj-$(CONFIG_MTD_NAND_MTK) += mtk_ecc.o mtk_nand.o
obj-$(CONFIG_MTD_NAND_TEGRA) += tegra_nand.o
obj-$(CONFIG_MTD_NAND_AR934X) += ar934x_nand.o
+obj-$(CONFIG_MTD_NAND_RB4XX) += nand_rb4xx.o
nand-objs := nand_base.o nand_bbt.o nand_timings.o nand_ids.o
nand-objs += nand_amd.o
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