realtek: add NAND targets for RTL93xx

Some known RTL93xx devices like the Linksys LGS328C or LGS352C are
NAND based. These require additional drivers and packages (e.g. UBI).
The current subtargets are already taylored down for devices with
only 16MB flash. Adding features that are not used will only make
the storage situation more complicated.

Add two new subtargets for RTL93xx that include the basic NAND, UBI
and MTD features. To achieve this do the following:

- Create new subtarget folders
- Copy the existing config and makefiles over
- Add the basic additional features
- Mark them as SOURCE-ONLY
- Add empty image makefiles
- Remove unneded NAND/MTD features from existing configs

Signed-off-by: Markus Stockhausen <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/19700
Signed-off-by: Robert Marko <[email protected]>

target/linux/realtek/Makefile

@@ -7,12 +7,12 @@ BOARD:=realtek
 BOARDNAME:=Realtek MIPS
 DEVICE_TYPE:=basic
 FEATURES:=ramdisk squashfs
-SUBTARGETS:=rtl838x rtl839x rtl930x rtl931x
+SUBTARGETS:=rtl838x rtl839x rtl930x rtl930x_nand rtl931x rtl931x_nand
 
 KERNEL_PATCHVER:=6.12
 
 define Target/Description
-	Build firmware images for Realtek RTL83xx based boards.
+	Build firmware images for Realtek RTL83xx/RTL93xx based boards.
 endef
 
 include $(INCLUDE_DIR)/target.mk

target/linux/realtek/image/rtl930x_nand.mk

@@ -0,0 +1 @@
+# SPDX-License-Identifier: GPL-2.0-only

target/linux/realtek/image/rtl931x_nand.mk

@@ -0,0 +1 @@
+# SPDX-License-Identifier: GPL-2.0-only

target/linux/realtek/rtl930x/config-6.12

@@ -143,7 +143,7 @@ CONFIG_MTD_CFI_ADV_OPTIONS=y
 CONFIG_MTD_CFI_GEOMETRY=y
 CONFIG_MTD_CMDLINE_PARTS=y
 CONFIG_MTD_JEDECPROBE=y
-CONFIG_MTD_SPI_NAND=y
+# CONFIG_MTD_SPI_NAND is not set
 CONFIG_MTD_SPI_NOR=y
 CONFIG_MTD_SPLIT_BRNIMAGE_FW=y
 CONFIG_MTD_SPLIT_EVA_FW=y
@@ -219,7 +219,7 @@ CONFIG_SMP_UP=y
 CONFIG_SPI=y
 CONFIG_SPI_MASTER=y
 CONFIG_SPI_MEM=y
-CONFIG_SPI_REALTEK_SNAND=y
+# CONFIG_SPI_REALTEK_SNAND is not set
 CONFIG_SQUASHFS_DECOMP_MULTI_PERCPU=y
 CONFIG_SWPHY=y
 CONFIG_SYNC_R4K=y

target/linux/realtek/rtl930x_nand/config-6.12

@@ -0,0 +1,260 @@
+CONFIG_AQUANTIA_PHY=y
+CONFIG_ARCH_32BIT_OFF_T=y
+CONFIG_ARCH_HIBERNATION_POSSIBLE=y
+CONFIG_ARCH_KEEP_MEMBLOCK=y
+CONFIG_ARCH_MMAP_RND_BITS_MAX=15
+CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=15
+CONFIG_ARCH_SUSPEND_POSSIBLE=y
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=16
+CONFIG_BLK_DEV_RAM_SIZE=4096
+CONFIG_BOARD_SCACHE=y
+CONFIG_CLONE_BACKWARDS=y
+CONFIG_COMMON_CLK=y
+# CONFIG_COMMON_CLK_REALTEK is not set
+CONFIG_COMPACT_UNEVICTABLE_DEFAULT=1
+CONFIG_COMPAT_32BIT_TIME=y
+CONFIG_CONSOLE_LOGLEVEL_DEFAULT=15
+CONFIG_CPU_BIG_ENDIAN=y
+CONFIG_CPU_GENERIC_DUMP_TLB=y
+CONFIG_CPU_HAS_DIEI=y
+CONFIG_CPU_HAS_PREFETCH=y
+CONFIG_CPU_HAS_RIXI=y
+CONFIG_CPU_HAS_SYNC=y
+CONFIG_CPU_MIPS32=y
+# CONFIG_CPU_MIPS32_R1 is not set
+CONFIG_CPU_MIPS32_R2=y
+CONFIG_CPU_MIPSR2=y
+CONFIG_CPU_MIPSR2_IRQ_VI=y
+CONFIG_CPU_MIPSR2_IRQ_EI=y
+CONFIG_CPU_MITIGATIONS=y
+CONFIG_CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS=y
+CONFIG_CPU_R4K_CACHE_TLB=y
+CONFIG_CPU_SUPPORTS_32BIT_KERNEL=y
+CONFIG_CPU_SUPPORTS_HIGHMEM=y
+CONFIG_CPU_SUPPORTS_MSA=y
+CONFIG_CRC_CCITT=y
+CONFIG_CRYPTO_LIB_BLAKE2S_GENERIC=y
+CONFIG_CRYPTO_LIB_GF128MUL=y
+CONFIG_CRYPTO_LIB_POLY1305_RSIZE=2
+CONFIG_CRYPTO_LIB_SHA1=y
+CONFIG_CRYPTO_LIB_UTILS=y
+CONFIG_DEBUG_INFO=y
+CONFIG_DEBUG_SECTION_MISMATCH=y
+CONFIG_DMA_NONCOHERENT=y
+CONFIG_DTC=y
+CONFIG_EARLY_PRINTK=y
+CONFIG_EARLY_PRINTK_8250=y
+CONFIG_EXCLUSIVE_SYSTEM_RAM=y
+CONFIG_FIXED_PHY=y
+CONFIG_FORCE_NR_CPUS=y
+CONFIG_FS_IOMAP=y
+CONFIG_FUNCTION_ALIGNMENT=0
+CONFIG_FWNODE_MDIO=y
+CONFIG_FW_LOADER_PAGED_BUF=y
+CONFIG_FW_LOADER_SYSFS=y
+CONFIG_GENERIC_ATOMIC64=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_CMOS_UPDATE=y
+CONFIG_GENERIC_CPU_AUTOPROBE=y
+CONFIG_GENERIC_GETTIMEOFDAY=y
+CONFIG_GENERIC_IDLE_POLL_SETUP=y
+CONFIG_GENERIC_IOMAP=y
+CONFIG_GENERIC_IRQ_CHIP=y
+CONFIG_GENERIC_IRQ_SHOW=y
+CONFIG_GENERIC_LIB_ASHLDI3=y
+CONFIG_GENERIC_LIB_ASHRDI3=y
+CONFIG_GENERIC_LIB_CMPDI2=y
+CONFIG_GENERIC_LIB_LSHRDI3=y
+CONFIG_GENERIC_LIB_UCMPDI2=y
+CONFIG_GENERIC_PCI_IOMAP=y
+CONFIG_GENERIC_PHY=y
+CONFIG_GENERIC_PINCONF=y
+CONFIG_GENERIC_PINCTRL_GROUPS=y
+CONFIG_GENERIC_PINMUX_FUNCTIONS=y
+CONFIG_GENERIC_SCHED_CLOCK=y
+CONFIG_GENERIC_SMP_IDLE_THREAD=y
+CONFIG_GENERIC_TIME_VSYSCALL=y
+CONFIG_GPIOLIB_IRQCHIP=y
+CONFIG_GPIO_CDEV=y
+CONFIG_GPIO_GENERIC=y
+CONFIG_GPIO_PCA953X=y
+CONFIG_GPIO_REALTEK_OTTO=y
+CONFIG_GRO_CELLS=y
+CONFIG_HARDWARE_WATCHPOINTS=y
+CONFIG_HAS_DMA=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT=y
+CONFIG_HAS_IOPORT_MAP=y
+CONFIG_HIGHMEM=y
+CONFIG_HWMON=y
+CONFIG_HZ_PERIODIC=y
+CONFIG_I2C=y
+CONFIG_I2C_ALGOBIT=y
+CONFIG_I2C_BOARDINFO=y
+CONFIG_I2C_CHARDEV=y
+CONFIG_I2C_GPIO=y
+# CONFIG_I2C_GPIO_SHARED is not set
+CONFIG_I2C_MUX=y
+CONFIG_I2C_MUX_RTL9300=y
+CONFIG_I2C_RTL9300=y
+CONFIG_I2C_SMBUS=y
+CONFIG_INITRAMFS_SOURCE=""
+CONFIG_IRQCHIP=y
+CONFIG_IRQ_DOMAIN=y
+CONFIG_IRQ_FORCED_THREADING=y
+CONFIG_IRQ_MIPS_CPU=y
+CONFIG_IRQ_WORK=y
+CONFIG_JFFS2_ZLIB=y
+CONFIG_LEDS_GPIO=y
+# CONFIG_LEDS_RTL8231 is not set
+CONFIG_LIBFDT=y
+CONFIG_LOCK_DEBUGGING_SUPPORT=y
+CONFIG_MACH_REALTEK_RTL=y
+CONFIG_MARVELL_PHY=y
+CONFIG_MDIO_BUS=y
+CONFIG_MDIO_DEVICE=y
+CONFIG_MDIO_DEVRES=y
+CONFIG_MDIO_I2C=y
+CONFIG_MDIO_REALTEK_OTTO_AUX=y
+CONFIG_MDIO_SMBUS=y
+CONFIG_MFD_RTL8231=y
+CONFIG_MFD_SYSCON=y
+CONFIG_MIGRATION=y
+CONFIG_MIPS=y
+CONFIG_MIPS_ASID_BITS=8
+CONFIG_MIPS_ASID_SHIFT=0
+# CONFIG_MIPS_CMDLINE_FROM_BOOTLOADER is not set
+CONFIG_MIPS_CMDLINE_FROM_DTB=y
+CONFIG_MIPS_CPU_SCACHE=y
+CONFIG_MIPS_EXTERNAL_TIMER=y
+CONFIG_MIPS_L1_CACHE_SHIFT=5
+CONFIG_MIPS_MT=y
+# CONFIG_MIPS_MT_FPAFF is not set
+CONFIG_MIPS_MT_SMP=y
+# CONFIG_MIPS_NO_APPENDED_DTB is not set
+CONFIG_MIPS_NR_CPU_NR_MAP=2
+CONFIG_MIPS_PERF_SHARED_TC_COUNTERS=y
+CONFIG_MIPS_RAW_APPENDED_DTB=y
+CONFIG_MIPS_SPRAM=y
+CONFIG_MMU_LAZY_TLB_REFCOUNT=y
+CONFIG_MODULES_USE_ELF_REL=y
+CONFIG_MTD_CFI_ADV_OPTIONS=y
+CONFIG_MTD_CFI_GEOMETRY=y
+CONFIG_MTD_CMDLINE_PARTS=y
+CONFIG_MTD_JEDECPROBE=y
+CONFIG_MTD_SPI_NAND=y
+CONFIG_MTD_SPI_NOR=y
+CONFIG_MTD_SPLIT_BRNIMAGE_FW=y
+CONFIG_MTD_SPLIT_EVA_FW=y
+CONFIG_MTD_SPLIT_FIRMWARE=y
+CONFIG_MTD_SPLIT_TPLINK_FW=y
+CONFIG_MTD_SPLIT_UIMAGE_FW=y
+CONFIG_MTD_UBI=y
+CONFIG_MTD_UBI_BEB_LIMIT=20
+CONFIG_MTD_UBI_BLOCK=y
+CONFIG_MTD_UBI_WL_THRESHOLD=4096
+CONFIG_NEED_DMA_MAP_STATE=y
+CONFIG_NEED_PER_CPU_KM=y
+CONFIG_NET_DEVLINK=y
+CONFIG_NET_DSA=y
+CONFIG_NET_DSA_RTL83XX=y
+CONFIG_NET_DSA_TAG_TRAILER=y
+CONFIG_NET_EGRESS=y
+CONFIG_NET_FLOW_LIMIT=y
+CONFIG_NET_INGRESS=y
+CONFIG_NET_RTL838X=y
+CONFIG_NET_SELFTESTS=y
+CONFIG_NET_XGRESS=y
+CONFIG_NO_EXCEPT_FILL=y
+CONFIG_NO_GENERIC_PCI_IOPORT_MAP=y
+CONFIG_NR_CPUS=2
+CONFIG_NVMEM=y
+CONFIG_NVMEM_LAYOUTS=y
+CONFIG_OF=y
+CONFIG_OF_ADDRESS=y
+CONFIG_OF_EARLY_FLATTREE=y
+CONFIG_OF_FLATTREE=y
+CONFIG_OF_GPIO=y
+CONFIG_OF_IRQ=y
+CONFIG_OF_KOBJ=y
+CONFIG_OF_MDIO=y
+CONFIG_PAGE_POOL=y
+CONFIG_PAGE_SIZE_LESS_THAN_256KB=y
+CONFIG_PAGE_SIZE_LESS_THAN_64KB=y
+CONFIG_PCI_DRIVERS_LEGACY=y
+CONFIG_PERF_USE_VMALLOC=y
+CONFIG_PGTABLE_LEVELS=2
+CONFIG_PHYLIB=y
+CONFIG_PHYLIB_LEDS=y
+CONFIG_PHYLINK=y
+CONFIG_PINCTRL=y
+CONFIG_PINCTRL_RTL8231=y
+CONFIG_POWER_RESET=y
+CONFIG_POWER_RESET_GPIO_RESTART=y
+CONFIG_POWER_RESET_SYSCON=y
+CONFIG_PREEMPT_NONE_BUILD=y
+CONFIG_PTP_1588_CLOCK_OPTIONAL=y
+CONFIG_RANDSTRUCT_NONE=y
+CONFIG_RATIONAL=y
+CONFIG_REALTEK_OTTO_TIMER=y
+CONFIG_REALTEK_OTTO_WDT=y
+CONFIG_REALTEK_PHY=y
+CONFIG_REALTEK_PHY_HWMON=y
+CONFIG_REALTEK_SOC_PHY=y
+CONFIG_REALTEK_THERMAL=y
+CONFIG_REGMAP=y
+CONFIG_REGMAP_I2C=y
+CONFIG_REGMAP_MDIO=y
+CONFIG_REGMAP_MMIO=y
+CONFIG_RESET_CONTROLLER=y
+CONFIG_RFS_ACCEL=y
+CONFIG_RPS=y
+CONFIG_RTL8261N_PHY=y
+# CONFIG_RTL838X is not set
+# CONFIG_RTL839X is not set
+CONFIG_RTL930X=y
+# CONFIG_RTL931X is not set
+CONFIG_SERIAL_MCTRL_GPIO=y
+CONFIG_SERIAL_OF_PLATFORM=y
+CONFIG_SFP=y
+CONFIG_SMP=y
+CONFIG_SMP_UP=y
+CONFIG_SPI=y
+CONFIG_SPI_MASTER=y
+CONFIG_SPI_MEM=y
+CONFIG_SPI_REALTEK_SNAND=y
+CONFIG_SQUASHFS_DECOMP_MULTI_PERCPU=y
+CONFIG_SWPHY=y
+CONFIG_SYNC_R4K=y
+CONFIG_SYSCTL_EXCEPTION_TRACE=y
+CONFIG_SYS_HAS_CPU_MIPS32_R1=y
+CONFIG_SYS_HAS_CPU_MIPS32_R2=y
+CONFIG_SYS_HAS_EARLY_PRINTK=y
+CONFIG_SYS_SUPPORTS_32BIT_KERNEL=y
+CONFIG_SYS_SUPPORTS_ARBIT_HZ=y
+CONFIG_SYS_SUPPORTS_BIG_ENDIAN=y
+CONFIG_SYS_SUPPORTS_HIGHMEM=y
+CONFIG_SYS_SUPPORTS_MIPS16=y
+CONFIG_SYS_SUPPORTS_MULTITHREADING=y
+CONFIG_SYS_SUPPORTS_SMP=y
+CONFIG_SYS_SUPPORTS_SCHED_SMT=y
+CONFIG_TARGET_ISA_REV=2
+CONFIG_THERMAL=y
+# CONFIG_THERMAL_DEFAULT_GOV_FAIR_SHARE is not set
+CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y
+# CONFIG_THERMAL_DEFAULT_GOV_USER_SPACE is not set
+CONFIG_THERMAL_EMERGENCY_POWEROFF_DELAY_MS=0
+CONFIG_THERMAL_GOV_STEP_WISE=y
+CONFIG_THERMAL_HWMON=y
+CONFIG_THERMAL_OF=y
+CONFIG_TICK_CPU_ACCOUNTING=y
+CONFIG_TIMER_OF=y
+CONFIG_TIMER_PROBE=y
+CONFIG_TINY_SRCU=y
+CONFIG_UBIFS_FS=y
+CONFIG_USE_GENERIC_EARLY_PRINTK_8250=y
+CONFIG_USE_OF=y
+CONFIG_WATCHDOG_CORE=y
+CONFIG_ZLIB_DEFLATE=y
+CONFIG_ZLIB_INFLATE=y

target/linux/realtek/rtl930x_nand/target.mk

@@ -0,0 +1,11 @@
+# SPDX-License-Identifier: GPL-2.0-only
+ARCH:=mips
+SUBTARGET:=rtl930x_nand
+CPU_TYPE:=24kc
+BOARD:=realtek
+BOARDNAME:=Realtek MIPS RTL930X (NAND)
+FEATURES+=nand source-only
+
+define Target/Description
+	Build firmware images for Realtek RTL930x based boards.
+endef

target/linux/realtek/rtl931x/config-6.12

@@ -153,7 +153,7 @@ CONFIG_MTD_CFI_ADV_OPTIONS=y
 CONFIG_MTD_CFI_GEOMETRY=y
 CONFIG_MTD_CMDLINE_PARTS=y
 CONFIG_MTD_JEDECPROBE=y
-CONFIG_MTD_SPI_NAND=y
+# CONFIG_MTD_SPI_NAND is not set
 CONFIG_MTD_SPI_NOR=y
 CONFIG_MTD_SPLIT_BRNIMAGE_FW=y
 CONFIG_MTD_SPLIT_EVA_FW=y
@@ -228,7 +228,7 @@ CONFIG_SOCK_RX_QUEUE_MAPPING=y
 CONFIG_SPI=y
 CONFIG_SPI_MASTER=y
 CONFIG_SPI_MEM=y
-CONFIG_SPI_REALTEK_SNAND=y
+# CONFIG_SPI_REALTEK_SNAND is not set
 CONFIG_SQUASHFS_DECOMP_MULTI_PERCPU=y
 CONFIG_SWPHY=y
 CONFIG_SYNC_R4K=y

target/linux/realtek/rtl931x_nand/config-6.12

@@ -0,0 +1,267 @@
+CONFIG_ARCH_32BIT_OFF_T=y
+CONFIG_ARCH_HIBERNATION_POSSIBLE=y
+CONFIG_ARCH_KEEP_MEMBLOCK=y
+CONFIG_ARCH_MMAP_RND_BITS_MAX=15
+CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=15
+CONFIG_ARCH_SUSPEND_POSSIBLE=y
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=16
+CONFIG_BLK_DEV_RAM_SIZE=4096
+CONFIG_BOARD_SCACHE=y
+CONFIG_CLKSRC_MIPS_GIC=y
+CONFIG_CLOCKSOURCE_WATCHDOG=y
+CONFIG_CLOCKSOURCE_WATCHDOG_MAX_SKEW_US=125
+CONFIG_CLONE_BACKWARDS=y
+CONFIG_COMMON_CLK=y
+# CONFIG_COMMON_CLK_REALTEK is not set
+CONFIG_COMPACT_UNEVICTABLE_DEFAULT=1
+CONFIG_COMPAT_32BIT_TIME=y
+CONFIG_CONSOLE_LOGLEVEL_DEFAULT=15
+CONFIG_CONTEXT_TRACKING=y
+CONFIG_CONTEXT_TRACKING_IDLE=y
+CONFIG_CPU_BIG_ENDIAN=y
+CONFIG_CPU_GENERIC_DUMP_TLB=y
+CONFIG_CPU_HAS_DIEI=y
+CONFIG_CPU_HAS_PREFETCH=y
+CONFIG_CPU_HAS_RIXI=y
+CONFIG_CPU_HAS_SYNC=y
+CONFIG_CPU_MIPS32=y
+# CONFIG_CPU_MIPS32_R1 is not set
+CONFIG_CPU_MIPS32_R2=y
+CONFIG_CPU_MIPSR2=y
+CONFIG_CPU_MIPSR2_IRQ_EI=y
+CONFIG_CPU_MIPSR2_IRQ_VI=y
+CONFIG_CPU_MITIGATIONS=y
+CONFIG_CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS=y
+CONFIG_CPU_R4K_CACHE_TLB=y
+CONFIG_CPU_RMAP=y
+CONFIG_CPU_SUPPORTS_32BIT_KERNEL=y
+CONFIG_CPU_SUPPORTS_HIGHMEM=y
+CONFIG_CPU_SUPPORTS_MSA=y
+CONFIG_CRYPTO_LIB_BLAKE2S_GENERIC=y
+CONFIG_CRYPTO_LIB_GF128MUL=y
+CONFIG_CRYPTO_LIB_POLY1305_RSIZE=2
+CONFIG_CRYPTO_LIB_SHA1=y
+CONFIG_CRYPTO_LIB_UTILS=y
+CONFIG_DEBUG_INFO=y
+CONFIG_DEBUG_SECTION_MISMATCH=y
+CONFIG_DMA_NONCOHERENT=y
+CONFIG_DTC=y
+CONFIG_EARLY_PRINTK=y
+CONFIG_EARLY_PRINTK_8250=y
+CONFIG_EXCLUSIVE_SYSTEM_RAM=y
+CONFIG_FIXED_PHY=y
+CONFIG_FS_IOMAP=y
+CONFIG_FUNCTION_ALIGNMENT=0
+CONFIG_FWNODE_MDIO=y
+CONFIG_FW_LOADER_PAGED_BUF=y
+CONFIG_FW_LOADER_SYSFS=y
+CONFIG_GENERIC_ATOMIC64=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_CMOS_UPDATE=y
+CONFIG_GENERIC_CPU_AUTOPROBE=y
+CONFIG_GENERIC_GETTIMEOFDAY=y
+CONFIG_GENERIC_IDLE_POLL_SETUP=y
+CONFIG_GENERIC_IOMAP=y
+CONFIG_GENERIC_IRQ_CHIP=y
+CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK=y
+CONFIG_GENERIC_IRQ_SHOW=y
+CONFIG_GENERIC_LIB_ASHLDI3=y
+CONFIG_GENERIC_LIB_ASHRDI3=y
+CONFIG_GENERIC_LIB_CMPDI2=y
+CONFIG_GENERIC_LIB_LSHRDI3=y
+CONFIG_GENERIC_LIB_UCMPDI2=y
+CONFIG_GENERIC_PCI_IOMAP=y
+CONFIG_GENERIC_PHY=y
+CONFIG_GENERIC_PINCONF=y
+CONFIG_GENERIC_PINCTRL_GROUPS=y
+CONFIG_GENERIC_PINMUX_FUNCTIONS=y
+CONFIG_GENERIC_SCHED_CLOCK=y
+CONFIG_GENERIC_SMP_IDLE_THREAD=y
+CONFIG_GENERIC_TIME_VSYSCALL=y
+CONFIG_GPIOLIB_IRQCHIP=y
+CONFIG_GPIO_CDEV=y
+CONFIG_GPIO_GENERIC=y
+CONFIG_GPIO_REALTEK_OTTO=y
+CONFIG_GRO_CELLS=y
+CONFIG_HARDWARE_WATCHPOINTS=y
+CONFIG_HAS_DMA=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT=y
+CONFIG_HAS_IOPORT_MAP=y
+CONFIG_HIGHMEM=y
+CONFIG_HWMON=y
+CONFIG_HZ_PERIODIC=y
+CONFIG_I2C=y
+CONFIG_I2C_ALGOBIT=y
+CONFIG_I2C_BOARDINFO=y
+CONFIG_I2C_CHARDEV=y
+CONFIG_I2C_GPIO=y
+# CONFIG_I2C_GPIO_SHARED is not set
+CONFIG_I2C_MUX=y
+CONFIG_I2C_MUX_RTL9300=y
+CONFIG_I2C_RTL9300=y
+CONFIG_I2C_SMBUS=y
+CONFIG_INITRAMFS_SOURCE=""
+CONFIG_IRQCHIP=y
+CONFIG_IRQ_DOMAIN=y
+CONFIG_IRQ_DOMAIN_HIERARCHY=y
+CONFIG_IRQ_FORCED_THREADING=y
+CONFIG_IRQ_MIPS_CPU=y
+CONFIG_IRQ_WORK=y
+CONFIG_JFFS2_ZLIB=y
+CONFIG_KMAP_LOCAL=y
+CONFIG_LEDS_GPIO=y
+CONFIG_LIBFDT=y
+CONFIG_LOCK_DEBUGGING_SUPPORT=y
+CONFIG_MACH_REALTEK_RTL=y
+CONFIG_MARVELL_PHY=y
+CONFIG_MDIO_BUS=y
+CONFIG_MDIO_DEVICE=y
+CONFIG_MDIO_DEVRES=y
+CONFIG_MDIO_I2C=y
+# CONFIG_MDIO_REALTEK_OTTO_AUX is not set
+CONFIG_MDIO_SMBUS=y
+# CONFIG_MFD_RTL8231 is not set
+CONFIG_MFD_SYSCON=y
+CONFIG_MIGRATION=y
+CONFIG_MIPS=y
+CONFIG_MIPS_ASID_BITS=8
+CONFIG_MIPS_ASID_SHIFT=0
+CONFIG_MIPS_CLOCK_VSYSCALL=y
+CONFIG_MIPS_CM=y
+# CONFIG_MIPS_CMDLINE_FROM_BOOTLOADER is not set
+CONFIG_MIPS_CMDLINE_FROM_DTB=y
+CONFIG_MIPS_CPC=y
+CONFIG_MIPS_CPS=y
+# CONFIG_MIPS_CPS_NS16550_BOOL is not set
+CONFIG_MIPS_CPU_SCACHE=y
+CONFIG_MIPS_EXTERNAL_TIMER=y
+CONFIG_MIPS_GIC=y
+CONFIG_MIPS_L1_CACHE_SHIFT=5
+CONFIG_MIPS_MT=y
+CONFIG_MIPS_MT_FPAFF=y
+CONFIG_MIPS_MT_SMP=y
+# CONFIG_MIPS_NO_APPENDED_DTB is not set
+CONFIG_MIPS_NR_CPU_NR_MAP=2
+CONFIG_MIPS_PERF_SHARED_TC_COUNTERS=y
+CONFIG_MIPS_RAW_APPENDED_DTB=y
+CONFIG_MIPS_SPRAM=y
+CONFIG_MMU_LAZY_TLB_REFCOUNT=y
+CONFIG_MODULES_USE_ELF_REL=y
+CONFIG_MTD_CFI_ADV_OPTIONS=y
+CONFIG_MTD_CFI_GEOMETRY=y
+CONFIG_MTD_CMDLINE_PARTS=y
+CONFIG_MTD_JEDECPROBE=y
+CONFIG_MTD_SPI_NAND=y
+CONFIG_MTD_SPI_NOR=y
+CONFIG_MTD_SPLIT_BRNIMAGE_FW=y
+CONFIG_MTD_SPLIT_EVA_FW=y
+CONFIG_MTD_SPLIT_FIRMWARE=y
+CONFIG_MTD_SPLIT_TPLINK_FW=y
+CONFIG_MTD_SPLIT_UIMAGE_FW=y
+CONFIG_MTD_UBI=y
+CONFIG_MTD_UBI_BEB_LIMIT=20
+CONFIG_MTD_UBI_BLOCK=y
+CONFIG_MTD_UBI_WL_THRESHOLD=4096
+CONFIG_NEED_DMA_MAP_STATE=y
+CONFIG_NEED_SRCU_NMI_SAFE=y
+CONFIG_NET_DEVLINK=y
+CONFIG_NET_DSA=y
+CONFIG_NET_DSA_RTL83XX=y
+CONFIG_NET_DSA_TAG_TRAILER=y
+CONFIG_NET_EGRESS=y
+CONFIG_NET_FLOW_LIMIT=y
+CONFIG_NET_INGRESS=y
+CONFIG_NET_RTL838X=y
+CONFIG_NET_SELFTESTS=y
+CONFIG_NET_XGRESS=y
+CONFIG_NO_EXCEPT_FILL=y
+CONFIG_NO_GENERIC_PCI_IOPORT_MAP=y
+CONFIG_NR_CPUS=4
+CONFIG_NVMEM=y
+CONFIG_NVMEM_LAYOUTS=y
+CONFIG_OF=y
+CONFIG_OF_ADDRESS=y
+CONFIG_OF_EARLY_FLATTREE=y
+CONFIG_OF_FLATTREE=y
+CONFIG_OF_GPIO=y
+CONFIG_OF_IRQ=y
+CONFIG_OF_KOBJ=y
+CONFIG_OF_MDIO=y
+CONFIG_PADATA=y
+CONFIG_PAGE_POOL=y
+CONFIG_PAGE_SIZE_LESS_THAN_256KB=y
+CONFIG_PAGE_SIZE_LESS_THAN_64KB=y
+CONFIG_PCI_DRIVERS_LEGACY=y
+CONFIG_PERF_USE_VMALLOC=y
+CONFIG_PGTABLE_LEVELS=2
+CONFIG_PHYLIB=y
+CONFIG_PHYLIB_LEDS=y
+CONFIG_PHYLINK=y
+CONFIG_PINCTRL=y
+CONFIG_POWER_RESET=y
+CONFIG_POWER_RESET_SYSCON=y
+CONFIG_PREEMPT_NONE_BUILD=y
+CONFIG_PTP_1588_CLOCK_OPTIONAL=y
+CONFIG_QUEUED_RWLOCKS=y
+CONFIG_QUEUED_SPINLOCKS=y
+CONFIG_RANDSTRUCT_NONE=y
+CONFIG_RATIONAL=y
+CONFIG_REALTEK_OTTO_TIMER=y
+CONFIG_REALTEK_OTTO_WDT=y
+CONFIG_REALTEK_SOC_PHY=y
+CONFIG_REGMAP=y
+CONFIG_REGMAP_I2C=y
+CONFIG_REGMAP_MMIO=y
+CONFIG_RESET_CONTROLLER=y
+CONFIG_RFS_ACCEL=y
+CONFIG_RPS=y
+# CONFIG_RTL838X is not set
+# CONFIG_RTL839X is not set
+CONFIG_RTL930X=y
+CONFIG_RTL931X=y
+CONFIG_SENSORS_GPIO_FAN=y
+CONFIG_SENSORS_LM75=y
+CONFIG_SERIAL_MCTRL_GPIO=y
+CONFIG_SERIAL_OF_PLATFORM=y
+CONFIG_SFP=y
+CONFIG_SMP=y
+CONFIG_SMP_UP=y
+CONFIG_SOCK_RX_QUEUE_MAPPING=y
+CONFIG_SPI=y
+CONFIG_SPI_MASTER=y
+CONFIG_SPI_MEM=y
+CONFIG_SPI_REALTEK_SNAND=y
+CONFIG_SQUASHFS_DECOMP_MULTI_PERCPU=y
+CONFIG_SWPHY=y
+CONFIG_SYNC_R4K=y
+CONFIG_SYSCTL_EXCEPTION_TRACE=y
+CONFIG_SYS_HAS_CPU_MIPS32_R1=y
+CONFIG_SYS_HAS_CPU_MIPS32_R2=y
+CONFIG_SYS_HAS_EARLY_PRINTK=y
+CONFIG_SYS_SUPPORTS_32BIT_KERNEL=y
+CONFIG_SYS_SUPPORTS_ARBIT_HZ=y
+CONFIG_SYS_SUPPORTS_BIG_ENDIAN=y
+CONFIG_SYS_SUPPORTS_HIGHMEM=y
+CONFIG_SYS_SUPPORTS_HOTPLUG_CPU=y
+CONFIG_SYS_SUPPORTS_MIPS16=y
+CONFIG_SYS_SUPPORTS_MIPS_CPS=y
+CONFIG_SYS_SUPPORTS_MULTITHREADING=y
+CONFIG_SYS_SUPPORTS_SCHED_SMT=y
+CONFIG_SYS_SUPPORTS_SMP=y
+CONFIG_SYS_SUPPORTS_VPE_LOADER=y
+CONFIG_TARGET_ISA_REV=2
+CONFIG_TICK_CPU_ACCOUNTING=y
+CONFIG_TIMER_OF=y
+CONFIG_TIMER_PROBE=y
+CONFIG_TREE_RCU=y
+CONFIG_TREE_SRCU=y
+CONFIG_UBIFS_FS=y
+CONFIG_USE_GENERIC_EARLY_PRINTK_8250=y
+CONFIG_USE_OF=y
+CONFIG_WATCHDOG_CORE=y
+CONFIG_WEAK_ORDERING=y
+CONFIG_XPS=y
+CONFIG_ZLIB_DEFLATE=y
+CONFIG_ZLIB_INFLATE=y

target/linux/realtek/rtl931x_nand/target.mk

@@ -0,0 +1,11 @@
+# SPDX-License-Identifier: GPL-2.0-only
+ARCH:=mips
+SUBTARGET:=rtl931x_nand
+CPU_TYPE:=24kc
+BOARD:=realtek
+BOARDNAME:=Realtek MIPS RTL931X (NAND)
+FEATURES+=nand source-only
+
+define Target/Description
+	Build firmware images for Realtek RTL931x based boards.
+endef