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--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -2012,5 +2012,13 @@ 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
@@ -256,3 +256,4 @@ obj-$(CONFIG_MFD_ROHM_BD70528) += rohm-b
obj-$(CONFIG_MFD_ROHM_BD718XX) += rohm-bd718x7.o
obj-$(CONFIG_MFD_STMFX) += stmfx.o
+obj-$(CONFIG_MFD_RB4XX_CPLD) += rb4xx-cpld.o
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -1408,6 +1408,12 @@ config GPIO_SODAVILLE
help
Say Y here to support Intel Sodaville GPIO.
+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 "SPI GPIO expanders"
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -113,6 +113,7 @@ obj-$(CONFIG_GPIO_PL061) += gpio-pl061.
obj-$(CONFIG_GPIO_PMIC_EIC_SPRD) += gpio-pmic-eic-sprd.o
obj-$(CONFIG_GPIO_PXA) += gpio-pxa.o
obj-$(CONFIG_GPIO_RASPBERRYPI_EXP) += gpio-raspberrypi-exp.o
+obj-$(CONFIG_GPIO_RB4XX) += gpio-rb4xx.o
obj-$(CONFIG_GPIO_RC5T583) += gpio-rc5t583.o
obj-$(CONFIG_GPIO_RCAR) += gpio-rcar.o
obj-$(CONFIG_GPIO_RDC321X) += gpio-rdc321x.o
--- a/drivers/mtd/nand/raw/Kconfig
+++ b/drivers/mtd/nand/raw/Kconfig
@@ -552,4 +552,11 @@ 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_RAW_NAND
--- a/drivers/mtd/nand/raw/Makefile
+++ b/drivers/mtd/nand/raw/Makefile
@@ -58,6 +58,7 @@ obj-$(CONFIG_MTD_NAND_TEGRA) += tegra_n
obj-$(CONFIG_MTD_NAND_STM32_FMC2) += stm32_fmc2_nand.o
obj-$(CONFIG_MTD_NAND_MESON) += meson_nand.o
obj-$(CONFIG_MTD_NAND_AR934X) += ar934x_nand.o
+obj-$(CONFIG_MTD_NAND_RB4XX) += nand_rb4xx.o
nand-objs := nand_base.o nand_legacy.o nand_bbt.o nand_timings.o nand_ids.o
nand-objs += nand_onfi.o
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