mfd: remove unused aat2870 driver

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Hello Arnd! May you please spare AAT2870 from being removed? I have a device which uses aat2870 (LG Optimus 2X P990 Tegra 2, not upstreamed yet, but in process as well) and atm I am working on converting this driver to use OF. Thank you!

P. S. If you are planning to remove more old drivers, please CC me in since I may be interested in some additional driver upgrades for devices I own.

Quoted 5 lines · Svyatoslav Ryhel

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Hello Arnd! May you please spare AAT2870 from being removed? I have a device which uses aat2870 (LG Optimus 2X P990 Tegra 2, not upstreamed yet, but in process as well) and atm I am working on converting this driver to use OF. Thank you!

Sure, I have removed this patch from my series now.

Quoted 3 lines

P. S. If you are planning to remove more old drivers, please CC me in since I may be interested in some additional driver upgrades for devices I own.

Please have a look at

https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git/log/?h=board-remove-7.3

I tried to be careful about figuring out exactly which drivers are unused, but I'm sure there are still a few false positive and false negative ones in there. I've added the current list of driver files below, let me know if you see something that shouldn't be there.

Arnd

drivers/hwmon/ds620.c
drivers/hwmon/f75375s.c
drivers/hwmon/max1111.c
drivers/hwmon/max197.c

Quoted 1 line

...

Quoted 4 lines

drivers/hwmon/ds620.c
drivers/hwmon/f75375s.c
drivers/hwmon/max1111.c
drivers/hwmon/max197.c

I missed the rationale for removing those, but then I don't really mind either. I guess we'll hear if someone still uses any of those drivers/chips.

Quoted 10 lines · Guenter Roeck

Quoted 1 line

...

Quoted 4 lines

drivers/hwmon/ds620.c
drivers/hwmon/f75375s.c
drivers/hwmon/max1111.c
drivers/hwmon/max197.c

I missed the rationale for removing those, but then I don't really mind either. I guess we'll hear if someone still uses any of those drivers/chips.

None of these have devicetree support, and they are not usable with any of the remaining board files.

From what I found:

- da620 apparently never had any users upstream, though it does not require platform data and is theoretically usable with an external dtb
- f75375s was only used on iop32x (long gone)
- max197 was used on x86/elan/ts5500, which is still in the tree but cannot be enabled anymore because it is a 486 class SoC. I have sent a separate patch to remove that platform
- max1111 was used on spitz, which is on its way out for 7.4.

Quoted 5 lines

__
Hello Arnd! May you please spare AAT2870 from being removed? I have a device which uses aat2870 (LG Optimus 2X P990 Tegra 2, not upstreamed yet, but in process as well) and atm I am working on converting this driver to use OF. Thank you!

Sure, I have removed this patch from my series now.

Quoted 3 lines

P. S. If you are planning to remove more old drivers, please CC me in since I may be interested in some additional driver upgrades for devices I own.

Please have a look at

https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git/log/?h=board-remove-7.3

I tried to be careful about figuring out exactly which drivers are unused, but I'm sure there are still a few false positive and false negative ones in there. I've added the current list of driver files below, let me know if you see something that shouldn't be there.

Arnd

drivers/ata/pata_icside.c
drivers/ata/pata_pxa.c
drivers/char/ds1620.c
drivers/char/hw_random/mxc-rnga.c
drivers/char/nwbutton.c
drivers/char/nwbutton.h
drivers/char/nwflash.c
drivers/clk/clk-axm5516.c
drivers/clk/clk-stm32f4.c
drivers/clk/clk-stm32h7.c
drivers/clk/imx/clk-imx31.c
drivers/clk/imx/clk-imxrt1050.c
drivers/clk/nxp/clk-lpc18xx-ccu.c
drivers/clk/nxp/clk-lpc18xx-cgu.c
drivers/clk/nxp/clk-lpc18xx-creg.c
drivers/clk/ti/clk-2xxx.c
drivers/clocksource/armv7m_systick.c
drivers/clocksource/mps2-timer.c
drivers/cpufreq/sa1110-cpufreq.c
drivers/dma/lpc18xx-dmamux.c
drivers/dma/sa11x0-dma.c
drivers/gpio/gpio-adp5520.c
drivers/gpio/gpio-htc-egpio.c
drivers/gpio/gpio-lpc18xx.c
drivers/gpio/gpio-rc5t583.c
drivers/gpio/gpio-rdc321x.c
drivers/gpio/gpio-reg.c
drivers/gpio/gpio-sa1100.c
drivers/gpio/gpio-wm8350.c
drivers/hwmon/ds620.c
drivers/hwmon/f75375s.c
drivers/hwmon/max1111.c
drivers/hwmon/max197.c
drivers/hwmon/wm8350-hwmon.c
drivers/i2c/busses/i2c-acorn.c
drivers/i2c/busses/i2c-axxia.c
drivers/i2c/busses/i2c-lpc2k.c
drivers/i2c/busses/i2c-stm32f4.c
drivers/iio/adc/ad7266.c
drivers/iio/adc/ad7791.c
drivers/iio/adc/ad7793.c
drivers/iio/adc/ad7887.c
drivers/iio/adc/lp8788_adc.c
drivers/iio/adc/lpc18xx_adc.c
drivers/iio/dac/lpc18xx_dac.c
drivers/iio/frequency/ad9523.c
drivers/input/joystick/as5011.c
drivers/input/keyboard/adp5520-keys.c
drivers/input/keyboard/ipaq-micro-keys.c
drivers/input/keyboard/jornada720_kbd.c
drivers/input/keyboard/lm8323.c
drivers/input/keyboard/lm8333.c
drivers/input/keyboard/locomokbd.c
drivers/input/misc/88pm80x_onkey.c
drivers/input/misc/ad714x-i2c.c
drivers/input/misc/ad714x-spi.c
drivers/input/misc/ad714x.c
drivers/input/misc/ad714x.h
drivers/input/misc/adxl34x-i2c.c
drivers/input/misc/adxl34x-spi.c
drivers/input/misc/adxl34x.c
drivers/input/misc/adxl34x.h
drivers/input/misc/bma150.c
drivers/input/misc/cma3000_d0x.c
drivers/input/misc/cma3000_d0x.h
drivers/input/misc/cma3000_d0x_i2c.c
drivers/input/misc/kxtj9.c
drivers/input/misc/max8997_haptic.c
drivers/input/misc/mc13783-pwrbutton.c
drivers/input/mouse/rpcmouse.c
drivers/input/serio/rpckbd.c
drivers/input/serio/sa1111ps2.c
drivers/input/touchscreen/ad7877.c
drivers/input/touchscreen/da9034-ts.c
drivers/input/touchscreen/ipaq-micro-ts.c
drivers/input/touchscreen/jornada720_ts.c
drivers/input/touchscreen/mc13783_ts.c
drivers/input/touchscreen/tps6507x-ts.c
drivers/irqchip/irq-nvic.c

drivers/irqchip/irq-sa11x0.c
drivers/irqchip/irq-stm32-exti.c
drivers/leds/leds-adp5520.c
drivers/leds/leds-bd2802.c
drivers/leds/leds-da903x.c
drivers/leds/leds-ipaq-micro.c
drivers/leds/leds-lm3530.c
drivers/leds/leds-lm3532.c

drivers/leds/leds-lm355x.c drivers/leds/leds-lm3642.c drivers/leds/leds-locomo.c drivers/leds/leds-lp3944.c drivers/leds/leds-lp8788.c drivers/leds/leds-wm8350.c drivers/media/i2c/ths7303.c drivers/media/platform/samsung/s3c-camif/Kconfig drivers/media/platform/samsung/s3c-camif/Makefile drivers/media/platform/samsung/s3c-camif/camif-capture.c drivers/media/platform/samsung/s3c-camif/camif-core.c drivers/media/platform/samsung/s3c-camif/camif-core.h drivers/media/platform/samsung/s3c-camif/camif-regs.c drivers/media/platform/samsung/s3c-camif/camif-regs.h drivers/media/platform/st/stm32/dma2d/dma2d-hw.c drivers/media/platform/st/stm32/dma2d/dma2d-regs.h drivers/media/platform/st/stm32/dma2d/dma2d.c drivers/media/platform/st/stm32/dma2d/dma2d.h drivers/media/radio/radio-si476x.c drivers/mfd/88pm800.c
drivers/mfd/88pm805.c
drivers/mfd/88pm80x.c
drivers/mfd/adp5520.c
drivers/mfd/da903x.c
drivers/mfd/ipaq-micro.c drivers/mfd/lp8788-irq.c
drivers/mfd/lp8788.c
drivers/mfd/mcp-core.c
drivers/mfd/mcp-sa11x0.c
drivers/mfd/menelaus.c drivers/mfd/rc5t583-irq.c
drivers/mfd/rc5t583.c drivers/mfd/rdc321x-southbridge.c drivers/mfd/si476x-cmd.c drivers/mfd/si476x-i2c.c drivers/mfd/si476x-prop.c drivers/mfd/ucb1x00-assabet.c drivers/mfd/ucb1x00-core.c drivers/mfd/ucb1x00-ts.c drivers/mfd/wm8350-core.c drivers/mfd/wm8350-gpio.c drivers/mfd/wm8350-i2c.c drivers/mfd/wm8350-irq.c drivers/mfd/wm8350-regmap.c drivers/mfd/wm8400-core.c drivers/misc/bh1770glc.c drivers/mtd/maps/dc21285.c drivers/mtd/maps/pxa2xx-flash.c drivers/mtd/maps/sa1100-flash.c drivers/mtd/nand/raw/sharpsl.c drivers/mtd/parsers/sharpslpart.c drivers/mtd/spi-nor/controllers/Kconfig drivers/mtd/spi-nor/controllers/Makefile drivers/mtd/spi-nor/controllers/hisi-sfc.c drivers/mtd/spi-nor/controllers/nxp-spifi.c drivers/net/can/bxcan.c drivers/net/ethernet/8390/etherh.c drivers/net/ethernet/i825xx/ether1.c drivers/net/ethernet/i825xx/ether1.h drivers/net/ethernet/lantiq_etop.c drivers/net/ethernet/samsung/Kconfig drivers/net/ethernet/samsung/Makefile drivers/net/ethernet/samsung/sxgbe/Makefile drivers/net/ethernet/samsung/sxgbe/sxgbe_common.h drivers/net/ethernet/samsung/sxgbe/sxgbe_core.c drivers/net/ethernet/samsung/sxgbe/sxgbe_desc.c drivers/net/ethernet/samsung/sxgbe/sxgbe_desc.h drivers/net/ethernet/samsung/sxgbe/sxgbe_dma.c drivers/net/ethernet/samsung/sxgbe/sxgbe_dma.h drivers/net/ethernet/samsung/sxgbe/sxgbe_ethtool.c drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c drivers/net/ethernet/samsung/sxgbe/sxgbe_mdio.c drivers/net/ethernet/samsung/sxgbe/sxgbe_mtl.c drivers/net/ethernet/samsung/sxgbe/sxgbe_mtl.h drivers/net/ethernet/samsung/sxgbe/sxgbe_platform.c drivers/net/ethernet/samsung/sxgbe/sxgbe_reg.h drivers/net/ethernet/seeq/ether3.c drivers/net/ethernet/seeq/ether3.h drivers/net/ethernet/stmicro/stmmac/dwmac-lpc18xx.c drivers/net/wireless/marvell/libertas/if_spi.c drivers/net/wireless/marvell/libertas/if_spi.h drivers/net/wireless/st/Kconfig drivers/net/wireless/st/Makefile drivers/net/wireless/st/cw1200/Kconfig drivers/net/wireless/st/cw1200/Makefile drivers/net/wireless/st/cw1200/bh.c drivers/net/wireless/st/cw1200/bh.h drivers/net/wireless/st/cw1200/cw1200.h drivers/net/wireless/st/cw1200/cw1200_sdio.c drivers/net/wireless/st/cw1200/cw1200_spi.c drivers/net/wireless/st/cw1200/debug.c drivers/net/wireless/st/cw1200/debug.h drivers/net/wireless/st/cw1200/fwio.c drivers/net/wireless/st/cw1200/fwio.h drivers/net/wireless/st/cw1200/hwbus.h drivers/net/wireless/st/cw1200/hwio.c drivers/net/wireless/st/cw1200/hwio.h drivers/net/wireless/st/cw1200/main.c drivers/net/wireless/st/cw1200/pm.c drivers/net/wireless/st/cw1200/pm.h drivers/net/wireless/st/cw1200/queue.c drivers/net/wireless/st/cw1200/queue.h drivers/net/wireless/st/cw1200/scan.c drivers/net/wireless/st/cw1200/scan.h drivers/net/wireless/st/cw1200/sta.c drivers/net/wireless/st/cw1200/sta.h drivers/net/wireless/st/cw1200/txrx.c drivers/net/wireless/st/cw1200/txrx.h drivers/net/wireless/st/cw1200/wsm.c drivers/net/wireless/st/cw1200/wsm.h drivers/nvmem/lpc18xx_eeprom.c drivers/nvmem/lpc18xx_otp.c drivers/pcmcia/max1600.c drivers/pcmcia/max1600.h drivers/pcmcia/pxa2xx_base.c drivers/pcmcia/pxa2xx_base.h drivers/pcmcia/pxa2xx_sharpsl.c drivers/pcmcia/sa1100_generic.c drivers/pcmcia/sa1100_generic.h drivers/pcmcia/sa1100_h3600.c drivers/pcmcia/sa1111_generic.c drivers/pcmcia/sa1111_generic.h drivers/pcmcia/sa1111_jornada720.c drivers/pcmcia/sa1111_neponset.c drivers/pcmcia/sa11xx_base.c drivers/pcmcia/sa11xx_base.h drivers/pcmcia/soc_common.c drivers/pcmcia/soc_common.h drivers/phy/phy-lpc18xx-usb-otg.c drivers/pinctrl/freescale/pinctrl-imxrt1050.c drivers/pinctrl/freescale/pinctrl-imxrt1170.c drivers/pinctrl/pinctrl-lpc18xx.c drivers/pinctrl/stm32/pinctrl-stm32f429.c drivers/pinctrl/stm32/pinctrl-stm32f469.c drivers/pinctrl/stm32/pinctrl-stm32f746.c drivers/pinctrl/stm32/pinctrl-stm32f769.c drivers/pinctrl/stm32/pinctrl-stm32h743.c drivers/power/reset/axxia-reset.c drivers/power/supply/collie_battery.c drivers/power/supply/da9030_battery.c drivers/power/supply/ipaq_micro_battery.c drivers/power/supply/lp8788-charger.c drivers/power/supply/twl4030_madc_battery.c drivers/power/supply/wm8350_power.c drivers/pwm/pwm-lpc18xx-sct.c drivers/regulator/88pm800-regulator.c drivers/regulator/da903x-regulator.c drivers/regulator/lp3971.c drivers/regulator/lp3972.c drivers/regulator/lp8788-buck.c drivers/regulator/lp8788-ldo.c drivers/regulator/max8649.c drivers/regulator/rc5t583-regulator.c drivers/regulator/wm8350-regulator.c drivers/regulator/wm8400-regulator.c drivers/reset/reset-lpc18xx.c drivers/rtc/rtc-88pm80x.c drivers/rtc/rtc-lp8788.c drivers/rtc/rtc-lpc24xx.c drivers/rtc/rtc-rc5t583.c drivers/rtc/rtc-wm8350.c drivers/scsi/arm/Kconfig drivers/scsi/arm/Makefile drivers/scsi/arm/acornscsi-io.S drivers/scsi/arm/acornscsi.c drivers/scsi/arm/acornscsi.h drivers/scsi/arm/arm_scsi.h drivers/scsi/arm/arxescsi.c drivers/scsi/arm/cumana_1.c drivers/scsi/arm/cumana_2.c drivers/scsi/arm/eesox.c drivers/scsi/arm/fas216.c drivers/scsi/arm/fas216.h drivers/scsi/arm/msgqueue.c drivers/scsi/arm/msgqueue.h drivers/scsi/arm/oak.c drivers/scsi/arm/powertec.c drivers/scsi/arm/queue.c drivers/scsi/arm/queue.h drivers/spi/spi-tle62x0.c drivers/tty/serial/21285.c drivers/tty/serial/8250/8250_acorn.c drivers/tty/serial/8250/8250_lpc18xx.c drivers/tty/serial/mps2-uart.c drivers/tty/serial/sa1100.c drivers/usb/host/ohci-sa1111.c drivers/usb/host/sl811-hcd.c drivers/usb/host/sl811.h drivers/usb/host/sl811_cs.c drivers/usb/musb/tusb6010.c drivers/usb/musb/tusb6010.h drivers/usb/musb/tusb6010_omap.c drivers/usb/phy/phy-mv-usb.h drivers/video/backlight/adp5520_bl.c drivers/video/backlight/adp8860_bl.c drivers/video/backlight/adp8870_bl.c drivers/video/backlight/ams369fg06.c drivers/video/backlight/bd6107.c drivers/video/backlight/corgi_lcd.c drivers/video/backlight/da903x_bl.c drivers/video/backlight/ep93xx_bl.c drivers/video/backlight/ipaq_micro_bl.c drivers/video/backlight/jornada720_bl.c drivers/video/backlight/jornada720_lcd.c drivers/video/backlight/lm3639_bl.c drivers/video/backlight/lms501kf03.c drivers/video/backlight/locomolcd.c drivers/video/backlight/lp8788_bl.c drivers/video/backlight/tdo24m.c drivers/video/fbdev/acornfb.c drivers/video/fbdev/acornfb.h drivers/video/fbdev/arcfb.c drivers/video/fbdev/broadsheetfb.c drivers/video/fbdev/core/fb_notify.c drivers/video/fbdev/ep93xx-fb.c drivers/video/fbdev/hecubafb.c drivers/video/fbdev/metronomefb.c drivers/video/fbdev/mmp/Kconfig drivers/video/fbdev/mmp/Makefile drivers/video/fbdev/mmp/core.c drivers/video/fbdev/mmp/fb/Kconfig drivers/video/fbdev/mmp/fb/Makefile drivers/video/fbdev/mmp/fb/mmpfb.c drivers/video/fbdev/mmp/fb/mmpfb.h drivers/video/fbdev/mmp/hw/Kconfig drivers/video/fbdev/mmp/hw/Makefile drivers/video/fbdev/mmp/hw/mmp_ctrl.c drivers/video/fbdev/mmp/hw/mmp_ctrl.h drivers/video/fbdev/mmp/hw/mmp_spi.c drivers/video/fbdev/mmp/panel/Kconfig drivers/video/fbdev/mmp/panel/Makefile drivers/video/fbdev/mmp/panel/tpo_tj032md01bw.c drivers/video/fbdev/n411.c drivers/video/fbdev/pxa168fb.c drivers/video/fbdev/pxa168fb.h drivers/video/fbdev/s1d13xxxfb.c drivers/video/fbdev/sa1100fb.c drivers/video/fbdev/sa1100fb.h drivers/watchdog/lpc18xx_wdt.c drivers/watchdog/rdc321x_wdt.c drivers/watchdog/wdt285.c drivers/watchdog/wdt977.c drivers/watchdog/wm8350_wdt.c sound/soc/codecs/si476x.c sound/soc/codecs/wm8350.c sound/soc/codecs/wm8350.h sound/soc/codecs/wm8400.c sound/soc/codecs/wm8400.h

sound/soc/pxa/pxa2xx-i2s.c
sound/soc/pxa/pxa2xx-i2s.h
sound/soc/pxa/spitz.c
sound/soc/ti/n810.c
sound/spi/Kconfig
sound/spi/Makefile
sound/spi/at73c213.c
sound/spi/at73c213.h

чт, 10 вер. 2026 р. о 21:15 Arnd Bergmann <[email protected]> пише:

Quoted 2 lines

drivers/leds/leds-lm3530.c
drivers/leds/leds-lm3532.c

LM3532 has full OF support and is functional, it just does not have device tree users yet. I have a device using it - Motorola Atrix 4G (Tegra 2 based).

Here is commit removing LM3532
https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git/commit/?id=46a6457870825d8b782d350fdc7e27c540734d41
Here are my patches bringing up Motorola Atrix 4G support
https://lore.kernel.org/lkml/[email protected]/

Quoted 5 lines · Svyatoslav Ryhel

__
Hello Arnd! May you please spare AAT2870 from being removed? I have a device which uses aat2870 (LG Optimus 2X P990 Tegra 2, not upstreamed yet, but in process as well) and atm I am working on converting this driver to use OF. Thank you!

Sure, I have removed this patch from my series now.

Quoted 3 lines

P. S. If you are planning to remove more old drivers, please CC me in since I may be interested in some additional driver upgrades for devices I own.

Please have a look at

https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git/log/?h=board-remove-7.3

I tried to be careful about figuring out exactly which drivers are unused, but I'm sure there are still a few false positive and false negative ones in there. I've added the current list of driver files below, let me know if you see something that shouldn't be there.

drivers/iio/adc/ad7266.c

drivers/iio/adc/ad7791.c

drivers/iio/adc/ad7793.c

drivers/iio/adc/ad7887.c

drivers/iio/adc/lp8788_adc.c

drivers/iio/adc/lpc18xx_adc.c
drivers/iio/dac/lpc18xx_dac.c

drivers/iio/frequency/ad9523.c

Quoted 5 lines · On Thu, 10 Sep 2026 20:14:15 +0200 "Arnd Bergmann" <[email protected]> wrote:

I tried to be careful about figuring out exactly which drivers are unused, but I'm sure there are still a few false positive and false negative ones in there. I've added the current list of driver files below, let me know if you see something that shouldn't be there.

Hi Arnd

For I2C and SPI at least, there doesn't need to be explicit device tree support as long as they have defaults when platform data isn't there. Those two buses will happily bind based on a dt-compatible and their i2c_device_id or spi_device_id tables for example.

So unless they fail to probe (some might?) we don't have a clear signal on whether they are in use via DT or not.

For vast majority of IIO drivers we don't have an upstream DTS as there is no clear motivation for anyone to upstream the dts for a random industrial control board or similar.

Quoted 1 line

drivers/iio/adc/ad7266.c

No to dropping this.

Quoted 1 line

drivers/iio/adc/ad7791.c

No to dropping this one.

Quoted 1 line

drivers/iio/adc/ad7793.c

Maybe. Analog devices ack needed.

Production part but this one indeed fails to probe. Analog folk, do you want to fix this one up?

Quoted 1 line

drivers/iio/adc/ad7887.c

No to dropping this.

Production part - should work fine with defaults in driver. Could like the others drop the platform data handling.

Quoted 1 line

drivers/iio/adc/lp8788_adc.c

Probably

Sub driver of an MFD. I'm fine with that going if we know the mfd is no longer in use.

Quoted 2 lines

drivers/iio/adc/lpc18xx_adc.c
drivers/iio/dac/lpc18xx_dac.c

Probably

Likewise these two.

Quoted 1 line

drivers/iio/frequency/ad9523.c

Maybe. Analog Devices ack needed.

Fails to probe without platform data and marked not recomended for new designs. If we get an Ack from Analog devices folk I'm fine with this one going away.

Quoted 13 lines · On Thu, 10 Sep 2026 20:14:15 +0200 "Arnd Bergmann" <[email protected]> wrote:

Quoted 5 lines · Svyatoslav Ryhel

__
Hello Arnd! May you please spare AAT2870 from being removed? I have a device which uses aat2870 (LG Optimus 2X P990 Tegra 2, not upstreamed yet, but in process as well) and atm I am working on converting this driver to use OF. Thank you!

Sure, I have removed this patch from my series now.

Quoted 3 lines

P. S. If you are planning to remove more old drivers, please CC me in since I may be interested in some additional driver upgrades for devices I own.

Quoted 8 lines

Please have a look at

https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git/log/?h=board-remove-7.3

I tried to be careful about figuring out exactly which drivers are unused, but I'm sure there are still a few false positive and false negative ones in there. I've added the current list of driver files below, let me know if you see something that shouldn't be there.

Hi Arnd

Quoted 2 lines

drivers/iio/adc/ad7793.c

Maybe. Analog devices ack needed.

Production part but this one indeed fails to probe. Analog folk, do you want to fix this one up?

Quoted 2 lines

drivers/iio/adc/ad7887.c

No to dropping this.

Production part - should work fine with defaults in driver. Could like the others drop the platform data handling.

Quoted 1 line

drivers/iio/adc/lp8788_adc.c

Probably

Sub driver of an MFD. I'm fine with that going if we know the mfd is no longer in use.

Quoted 2 lines

drivers/iio/adc/lpc18xx_adc.c
drivers/iio/dac/lpc18xx_dac.c

Probably

Likewise these two.

Quoted 1 line

drivers/iio/frequency/ad9523.c

Maybe. Analog Devices ack needed.

Quoted 3 lines · Jonathan Cameron

Quoted 1 line · On Thu, 10 Sep 2026 20:14:15 +0200 "Arnd Bergmann" <[email protected]> wrote:

drivers/iio/adc/ad7793.c

Quoted 4 lines

Maybe. Analog devices ack needed.

Production part but this one indeed fails to probe. Analog folk, do you want to fix this one up?

Given it's production we should fix. Looking at platdata seems to nicely fir in DT. Issue is that I don't have HW with me to test. So I'll maybe just remove platdata and assume some defaults.

Quoted 3 lines

Quoted 1 line

drivers/iio/frequency/ad9523.c

Maybe. Analog Devices ack needed.

Hmm we definitely use this one and we have OF support out of tree with likely some DT abuse of what can be in DT or not. Not sure if I have some HW around but we'll need to fix it.

In general for ADI parts, I think we can drop the ones that are not recommended for new designs. All the others I tempted to say we should keep. Naturally we need to fix all the drivers that do not compile without platdata. And for the ones with defaults we can also just remove platdata and use the plain defaults.

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Quoted 3 lines · Jonathan Cameron

Quoted 1 line · On Thu, 10 Sep 2026 20:14:15 +0200 "Arnd Bergmann" <[email protected]> wrote:

drivers/iio/adc/ad7793.c

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Maybe. Analog devices ack needed.

Production part but this one indeed fails to probe. Analog folk, do you want to fix this one up?

Given it's production we should fix. Looking at platdata seems to nicely fir in DT. Issue is that I don't have HW with me to test. So I'll maybe just remove platdata and assume some defaults.

Sounds good. I already dropped my removal patch for this one.

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drivers/iio/frequency/ad9523.c

Maybe. Analog Devices ack needed.

Hmm we definitely use this one and we have OF support out of tree with likely some DT abuse of what can be in DT or not. Not sure if I have some HW around but we'll need to fix it.

Quoted 5 lines

In general for ADI parts, I think we can drop the ones that are not recommended for new designs. All the others I tempted to say we should keep. Naturally we need to fix all the drivers that do not compile without platdata. And for the ones with defaults we can also just remove platdata and use the plain defaults.

Ok, I'll leave it alone as well now.

I currently still have patches to remove adp8860/8870 (backlight), ad7877 (touchscreen), ad714x (touch) and adxl34x (input, not the iio one), which are currently unusable with DT but are all listed as in production.

I assume you want to fix all of these and keep them in the kernel, but possibly still remove the adxl34x and only keep the IIO driver for that part?

I also have patches to remove platform_data probing from ad5761, adf4350, ad5791, ad5421 and ad5504, these all have DT support.

See
https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git/log/?h=board-remove-7.4
for the updated series. I hope to slowly get through that. Let me know if you want me to skip any more of those patches.

Thanks,

Arnd