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>
70 lines
2.2 KiB
Diff
70 lines
2.2 KiB
Diff
--- a/drivers/mfd/Kconfig
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+++ b/drivers/mfd/Kconfig
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@@ -1899,5 +1899,13 @@ 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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@@ -241,3 +241,4 @@ obj-$(CONFIG_MFD_SC27XX_PMIC) += sprd-sc
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obj-$(CONFIG_RAVE_SP_CORE) += rave-sp.o
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obj-$(CONFIG_MFD_ROHM_BD718XX) += rohm-bd718x7.o
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+obj-$(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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@@ -1371,6 +1371,12 @@ config GPIO_XRA1403
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help
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GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
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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 "USB GPIO expanders"
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--- a/drivers/gpio/Makefile
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+++ b/drivers/gpio/Makefile
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@@ -159,3 +159,4 @@ obj-$(CONFIG_GPIO_ZEVIO) += gpio-zevio.o
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obj-$(CONFIG_GPIO_ZYNQ) += gpio-zynq.o
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obj-$(CONFIG_GPIO_ZX) += gpio-zx.o
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obj-$(CONFIG_GPIO_LOONGSON1) += gpio-loongson1.o
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+obj-$(CONFIG_GPIO_RB4XX) += gpio-rb4xx.o
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--- a/drivers/mtd/nand/raw/Kconfig
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+++ b/drivers/mtd/nand/raw/Kconfig
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@@ -569,4 +569,11 @@ config MTD_NAND_AR934X
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Enables support for NAND controller on Qualcomm Atheros SoCs.
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This controller is found on AR934x and QCA955x SoCs.
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+config MTD_NAND_RB4XX
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+ tristate "Support for NAND driver for Mikrotik RB4xx series boards"
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+ depends on MFD_RB4XX_CPLD
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+ help
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+ Enables support for the NAND flash chip on Mikrotik Routerboard
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+ RB4xx series.
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+
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endif # MTD_NAND
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--- a/drivers/mtd/nand/raw/Makefile
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+++ b/drivers/mtd/nand/raw/Makefile
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@@ -58,6 +58,7 @@ obj-$(CONFIG_MTD_NAND_QCOM) += qcom_nan
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obj-$(CONFIG_MTD_NAND_MTK) += mtk_ecc.o mtk_nand.o
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obj-$(CONFIG_MTD_NAND_TEGRA) += tegra_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_bbt.o nand_timings.o nand_ids.o
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nand-objs += nand_amd.o
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