kernel/linux.git/arch/mips/rb532, branch master

MIPS/mtd: Handle READY GPIO in generic NAND platform data

2026-04-13T13:41:56+00:00

The callbacks into the MIPS RB532 platform to read the GPIO pin indicating that the NAND chip is ready are oldschool and does not assign GPIOs as properties to the NAND device. Add a capability to the generic platform NAND chip driver to use a GPIO line to detect if a NAND chip is ready and override the platform-local drv_ready() callback with this check if the GPIO is present. This makes it possible to drop the legacy include header from the RB532 devices. Signed-off-by: Linus Walleij Acked-by: Miquel Raynal Signed-off-by: Thomas Bogendoerfer

MIPS/input: Move RB532 button to GPIO descriptors

2026-04-13T13:41:56+00:00

Convert the Mikrotik RouterBoard RB532 to use GPIO descriptors by defining a software node for the GPIO chip, then register the button platform device with full info passing the GPIO as a device property. This can be used as a base to move more of the RB532 devices over to passing GPIOs using device properties. Use the GPIO_ACTIVE_LOW flag and drop the inversion in the rb532_button_pressed() function. Signed-off-by: Linus Walleij Acked-by: Dmitry Torokhov Signed-off-by: Thomas Bogendoerfer

Merge tag 'mips_7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

2026-02-16T17:30:44+00:00

Pull MIPS updates from Thomas Bogendoerfer: "Cleanups and fixes" * tag 'mips_7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (28 commits) Revert "clk: microchip: core: allow driver to be compiled with COMPILE_TEST" Revert "clk: microchip: fix typo in reference to a config option" MIPS: Implement ARCH_HAS_CC_CAN_LINK MIPS: rb532: Fix MMIO UART resource registration MIPS: Work around LLVM bug when gp is used as global register variable MIPS: Loongson64: env: Fixup serial clock-frequency when using LEFI MIPS: Loongson2ef: Use pcibios_align_resource() to block io range MIPS: Loongson2ef: Register PCI controller in early stage clk: microchip: fix typo in reference to a config option MIPS: Loongson64: dts: fix phy-related definition of LS7A GMAC clk: microchip: core: allow driver to be compiled with COMPILE_TEST MIPS: drop unused pic32.h header watchdog: pic32-wdt: update include to use pic32.h from platform_data watchdog: pic32-dmt: update include to use pic32.h from platform_data serial: pic32_uart: update include to use pic32.h from platform_data rtc: pic32: update include to use pic32.h from platform_data pinctrl: pic32: update include to use pic32.h from platform_data mmc: sdhci-pic32: update include to use pic32.h from platform_data irqchip/irq-pic32-evic: update include to use pic32.h from platform_data clk: microchip: core: update include to use pic32.h from platform_data ...

MIPS: rb532: Fix MMIO UART resource registration

2026-02-09T11:50:02+00:00

Since commit 6e690d54cfa8 ("serial: 8250: fix return error code in serial8250_request_std_resource()"), registering an 8250 MMIO port without mapbase no longer works, as the resource range is derived from mapbase/mapsize. Populate mapbase and mapsize accordingly. Also drop ugly membase KSEG1 pointer and set UPF_IOREMAP instead, letting the 8250 core perform the ioremap. Fixes: 6e690d54cfa8 ("serial: 8250: fix return error code in serial8250_request_std_resource()") Cc: stable@vger.kernel.org Reported-by: Waldemar Brodkorb Link: https://lore.kernel.org/linux-mips/aX-d0ShTplHKZT33@waldemar-brodkorb.de/ Signed-off-by: Jiaxun Yang Signed-off-by: Thomas Bogendoerfer

kernel.h: drop hex.h and update all hex.h users

2026-01-21T03:44:19+00:00

Remove from and update all users/callers of hex.h interfaces to directly #include as part of the process of putting kernel.h on a diet. Removing hex.h from kernel.h means that 36K C source files don't have to pay the price of parsing hex.h for the roughly 120 C source files that need it. This change has been build-tested with allmodconfig on most ARCHes. Also, all users/callers of in the entire source tree have been updated if needed (if not already #included). Link: https://lkml.kernel.org/r/20251215005206.2362276-1-rdunlap@infradead.org Signed-off-by: Randy Dunlap Reviewed-by: Andy Shevchenko Cc: Ingo Molnar Cc: Yury Norov (NVIDIA) Signed-off-by: Andrew Morton

MIPS: RB532: Replace deprecated strcpy() with memcpy() and strscpy()

2025-08-29T20:34:30+00:00

strcpy() is deprecated; use memcpy() and strscpy() instead. Add the local variable 'size_t len' to keep track of the string lengths and prefer memcpy() over strscpy() when we use the string length to advance the 'cp' pointer. No functional changes intended. Link: https://github.com/KSPP/linux/issues/88 Signed-off-by: Thorsten Blum Signed-off-by: Thomas Bogendoerfer

treewide: rename GPIO set callbacks back to their original names

2025-08-07T08:07:06+00:00

The conversion of all GPIO drivers to using the .set_rv() and .set_multiple_rv() callbacks from struct gpio_chip (which - unlike their predecessors - return an integer and allow the controller drivers to indicate failures to users) is now complete and the legacy ones have been removed. Rename the new callbacks back to their original names in one sweeping change. Signed-off-by: Bartosz Golaszewski

MIPS: rb532: gpio: use new line value setter callbacks

2025-04-27T07:21:21+00:00

struct gpio_chip now has callbacks for setting line values that return an integer, allowing to indicate failures. Convert the driver to using them. Signed-off-by: Bartosz Golaszewski Reviewed-by: Linus Walleij Signed-off-by: Thomas Bogendoerfer

MIPS: RB532: Declare prom_setup_cmdline() and rb532_gpio_init() static

2024-04-15T08:21:52+00:00

early_tlb_init() and rb532_gpio_init() were local to file but not declared static, leading to error: arch/mips/rb532/prom.c:49:13: error: no previous prototype for ‘prom_setup_cmdline’ [-Werror=missing-prototypes] 49 | void __init prom_setup_cmdline(void) | ^~~~~~~~~~~~~~~~~~ arch/mips/rb532/gpio.c:200:12: error: no previous prototype for ‘rb532_gpio_init’ [-Werror=missing-prototypes] 200 | int __init rb532_gpio_init(void) | ^~~~~~~~~~~~~~~ Signed-off-by: Yongzhen Zhang Signed-off-by: Thomas Bogendoerfer

MIPS: rb532: move GPIOD definition into C-files

2022-03-30T18:26:26+00:00

My kernel robot reports build error from drivers/iio/adc/da9150-gpadc.c, drivers/iio/adc/da9150-gpadc.c:254:13: error: ‘DA9150_GPADC_CHAN_0x08’ undeclared here (not in a function); did you mean ‘DA9150_GPADC_CHAN_TBAT’? 254 | .channel = DA9150_GPADC_CHAN_##_id, We define GPIOD in rb.h, in fact it should only be used in gpio.c, but it affects the driver da9150-gpadc.c which goes against the original intention of the design, just move it to its scope. Fixes: 1b432840d0a4 ("MIPS: RB532: GPIO register offsets are relative to GPIOBASE") Suggested-by: Jonathan Cameron Suggested-by: Andy Shevchenko Reported-by: k2ci Signed-off-by: Jackie Liu Signed-off-by: Thomas Bogendoerfer