fa70b3a4bb
This adds 3 Mikrotik rb4xx series drivers as follows: rb4xx-cpld: This is in the mfd subsystem, and is the parent CPLD device that interfaces between the SoC SPI bus and its two children below. rb4xx-gpio: This is the GPIO expander. rb4xx-nand: This is the NAND driver. The history of this code comes in three phases. 1. The first is a May 2015 attempt to push the equivalient ar71xx rb4xx drivers upstream. See https://lore.kernel.org/patchwork/patch/940880/. Module-author: Gabor Juhos <juhosg@openwrt.org> Module-author: Imre Kaloz <kaloz@openwrt.org> Module-author: Bert Vermeulen <bert@biot.com> 2. Next several ar71xx patches were applied bringing the code current. commit7bbf4117c6Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> commitaf79fdbe4acommit889272d92dcommite21cb649a2commit7c09fa4a74Signed-off-by: Felix Fietkau <nbd@nbd.name> 3. Finally a heavy refactor to split the driver into the three new subsystems, and updated to work with the device tree configuration, plus updates and review feedback incorporated Reviewed-by: Thibaut VARÈNE <hacks@slashdirt.org> Signed-off-by: Christopher Hill <ch6574@gmail.com>
73 lines
2.4 KiB
Diff
73 lines
2.4 KiB
Diff
--- a/drivers/mfd/Kconfig
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+++ b/drivers/mfd/Kconfig
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@@ -2012,5 +2012,13 @@ config RAVE_SP_CORE
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Select this to get support for the Supervisory Processor
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device found on several devices in RAVE line of hardware.
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+config MFD_RB4XX_CPLD
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+ tristate "CPLD driver for Mikrotik RB4xx series boards
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+ select MFD_CORE
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+ depends on ATH79 || COMPILE_TEST
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+ help
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+ Enables support for the CPLD chip (NAND & GPIO) on Mikrotik
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+ Routerboard RB4xx series.
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+
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endmenu
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endif
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--- a/drivers/mfd/Makefile
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+++ b/drivers/mfd/Makefile
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@@ -256,3 +256,4 @@ obj-$(CONFIG_MFD_ROHM_BD70528) += rohm-b
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obj-$(CONFIG_MFD_ROHM_BD718XX) += rohm-bd718x7.o
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obj-$(CONFIG_MFD_STMFX) += stmfx.o
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+obj-$(CONFIG_MFD_RB4XX_CPLD) += rb4xx-cpld.o
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--- a/drivers/gpio/Kconfig
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+++ b/drivers/gpio/Kconfig
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@@ -1406,6 +1406,12 @@ config GPIO_SODAVILLE
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help
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Say Y here to support Intel Sodaville GPIO.
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+config GPIO_RB4XX
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+ tristate "GPIO expander for Mikrotik RB4xx series boards"
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+ depends on MFD_RB4XX_CPLD
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+ help
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+ GPIO driver for Mikrotik Routerboard RB4xx series.
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+
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endmenu
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menu "SPI GPIO expanders"
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--- a/drivers/gpio/Makefile
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+++ b/drivers/gpio/Makefile
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@@ -113,6 +113,7 @@ obj-$(CONFIG_GPIO_PL061) += gpio-pl061.
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obj-$(CONFIG_GPIO_PMIC_EIC_SPRD) += gpio-pmic-eic-sprd.o
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obj-$(CONFIG_GPIO_PXA) += gpio-pxa.o
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obj-$(CONFIG_GPIO_RASPBERRYPI_EXP) += gpio-raspberrypi-exp.o
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+obj-$(CONFIG_GPIO_RB4XX) += gpio-rb4xx.o
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obj-$(CONFIG_GPIO_RC5T583) += gpio-rc5t583.o
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obj-$(CONFIG_GPIO_RCAR) += gpio-rcar.o
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obj-$(CONFIG_GPIO_RDC321X) += gpio-rdc321x.o
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--- a/drivers/mtd/nand/raw/Kconfig
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+++ b/drivers/mtd/nand/raw/Kconfig
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@@ -552,4 +552,11 @@ config MTD_NAND_AR934X
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Enables support for NAND controller on Qualcomm Atheros SoCs.
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This controller is found on AR934x and QCA955x SoCs.
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+config MTD_NAND_RB4XX
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+ tristate "Support for NAND driver for Mikrotik RB4xx series boards"
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+ depends on MFD_RB4XX_CPLD
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+ help
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+ Enables support for the NAND flash chip on Mikrotik Routerboard
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+ RB4xx series.
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+
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endif # MTD_RAW_NAND
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--- a/drivers/mtd/nand/raw/Makefile
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+++ b/drivers/mtd/nand/raw/Makefile
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@@ -58,6 +58,7 @@ obj-$(CONFIG_MTD_NAND_TEGRA) += tegra_n
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obj-$(CONFIG_MTD_NAND_STM32_FMC2) += stm32_fmc2_nand.o
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obj-$(CONFIG_MTD_NAND_MESON) += meson_nand.o
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obj-$(CONFIG_MTD_NAND_AR934X) += ar934x_nand.o
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+obj-$(CONFIG_MTD_NAND_RB4XX) += nand_rb4xx.o
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nand-objs := nand_base.o nand_legacy.o nand_bbt.o nand_timings.o nand_ids.o
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nand-objs += nand_onfi.o
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