ath79: add 5.15 support for generic subtarget

Add Kernel 5.15 patches + config. This is currently only available for
the generic subtarget, as it was exclusively tested with this target.

Tested-on: Siemens WS-AP3610, Enterasys WS-AP3705i

Signed-off-by: David Bauer <mail@david-bauer.net>

1 files changed, 76 insertions, 0 deletions

diff --git a/target/linux/ath79/patches-5.15/920-mikrotik-rb4xx.patch b/target/linux/ath79/patches-5.15/920-mikrotik-rb4xx.patch
new file mode 100644
index 0000000000..904f212e41
--- /dev/null
+++ b/target/linux/ath79/patches-5.15/920-mikrotik-rb4xx.patch
@@ -0,0 +1,76 @@
+--- a/drivers/mfd/Kconfig
++++ b/drivers/mfd/Kconfig
+@@ -2174,6 +2174,14 @@ 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.
++
+ config SGI_MFD_IOC3
+ 	bool "SGI IOC3 core driver"
+ 	depends on PCI && MIPS && 64BIT
+--- a/drivers/mfd/Makefile
++++ b/drivers/mfd/Makefile
+@@ -267,6 +267,7 @@ obj-$(CONFIG_MFD_KHADAS_MCU) 	+= khadas-
+ obj-$(CONFIG_MFD_ACER_A500_EC)	+= acer-ec-a500.o
+ obj-$(CONFIG_MFD_QCOM_PM8008)	+= qcom-pm8008.o
+ 
++obj-$(CONFIG_MFD_RB4XX_CPLD)	+= rb4xx-cpld.o
+ obj-$(CONFIG_SGI_MFD_IOC3)	+= ioc3.o
+ obj-$(CONFIG_MFD_SIMPLE_MFD_I2C)	+= simple-mfd-i2c.o
+ obj-$(CONFIG_MFD_INTEL_M10_BMC)   += intel-m10-bmc.o
+--- a/drivers/gpio/Kconfig
++++ b/drivers/gpio/Kconfig
+@@ -1574,6 +1574,12 @@ config GPIO_SODAVILLE
+ 	help
+ 	  Say Y here to support Intel Sodaville GPIO.
+ 
++config GPIO_RB4XX
++	tristate "GPIO expander for Mikrotik RB4xx series boards"
++	depends on MFD_RB4XX_CPLD
++	help
++	  GPIO driver for Mikrotik Routerboard RB4xx series.
++
+ endmenu
+ 
+ menu "SPI GPIO expanders"
+--- a/drivers/gpio/Makefile
++++ b/drivers/gpio/Makefile
+@@ -122,6 +122,7 @@ obj-$(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-$(CONFIG_GPIO_RDA)			+= gpio-rda.o
+--- a/drivers/mtd/nand/raw/Kconfig
++++ b/drivers/mtd/nand/raw/Kconfig
+@@ -563,4 +563,11 @@ config MTD_NAND_AR934X
+ 	  Enables support for NAND controller on Qualcomm Atheros SoCs.
+ 	  This controller is found on AR934x and QCA955x SoCs.
+ 
++config MTD_NAND_RB4XX
++	tristate "Support for NAND driver for Mikrotik RB4xx series boards"
++	depends on MFD_RB4XX_CPLD
++	help
++	  Enables support for the NAND flash chip on Mikrotik Routerboard
++	  RB4xx series.
++
+ endif # MTD_RAW_NAND
+--- a/drivers/mtd/nand/raw/Makefile
++++ b/drivers/mtd/nand/raw/Makefile
+@@ -59,6 +59,7 @@ obj-$(CONFIG_MTD_NAND_INTEL_LGM)	+= inte
+ obj-$(CONFIG_MTD_NAND_ROCKCHIP)		+= rockchip-nand-controller.o
+ obj-$(CONFIG_MTD_NAND_PL35X)		+= pl35x-nand-controller.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