linux-toradex.git/arch/arm/mach-at91, branch master

Merge tag 'devicetree-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

2026-02-12T02:27:08+00:00

Pull devicetree updates from Rob Herring:
 "DT core:

   - Sync dtc/libfdt with upstream v1.7.2-62-ga26ef6400bd8

   - Add a for_each_compatible_node_scoped() loop and convert users in
     cpufreq, dmaengine, clk, cdx, powerpc and Arm

   - Simplify of/platform.c with scoped loop helpers

   - Add fw_devlink tracking for "mmc-pwrseq"

   - Optimize fw_devlink callback code size for pinctrl-N properties

   - Replace strcmp_suffix() with strends()

  DT bindings:

   - Support building single binding targets

   - Convert google,goldfish-fb, cznic,turris-mox-rwtm, ti,prm-inst

   - Add bindings for Freescale AVIC, Realtek RTD1xxx system
     controllers, Microchip 25AA010A EEPROM, OnSemi FIN3385, IEI
     WT61P803 PUZZLE, Delta Electronics DPS-800-AB power supply,
     Infineon IR35221 Digital Multi-phase Controller, Infineon PXE1610
     Digital Dual Output 6+1 VR12.5 & VR13 CPU Controller,
     socionext,uniphier-smpctrl, and xlnx,zynqmp-firmware

   - Lots of trivial binding fixes to address warnings in DTS files.
     These are mostly for arm64 platforms which is getting closer to be
     warning free. Some public shaming has helped.

   - Fix I2C bus node names in examples

   - Drop obsolete brcm,vulcan-soc binding

   - Drop unreferenced binding headers"

* tag 'devicetree-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (60 commits)
  dt-bindings: interrupt-controller: Add compatiblie string fsl,imx(1|25|27|31|35)-avic
  dt-bindings: soc: imx: add fsl,aips and fsl,emi compatible strings
  dt-bindings: display: bridge: lt8912b: Drop reset gpio requirement
  dt-bindings: firmware: fsl,scu: Mark multi-channel MU layouts as deprecated
  cpufreq: s5pv210: Simplify with scoped for each OF child loop
  dmaengine: fsl_raid: Simplify with scoped for each OF child loop
  clk: imx: imx31: Simplify with scoped for each OF child loop
  clk: imx: imx27: Simplify with scoped for each OF child loop
  cdx: Use mutex guard to simplify error handling
  cdx: Simplify with scoped for each OF child loop
  powerpc/wii: Simplify with scoped for each OF child loop
  powerpc/fsp2: Simplify with scoped for each OF child loop
  ARM: exynos: Simplify with scoped for each OF child loop
  ARM: at91: Simplify with scoped for each OF child loop
  of: Add for_each_compatible_node_scoped() helper
  dt-bindings: Fix emails with spaces or missing brackets
  scripts/dtc: Update to upstream version v1.7.2-62-ga26ef6400bd8
  dt-bindings: crypto: inside-secure,safexcel: Mandate only ring IRQs
  dt-bindings: crypto: inside-secure,safexcel: Add SoC compatibles
  of: reserved_mem: Fix placement of __free() annotation
  ...

ARM: at91: Simplify with scoped for each OF child loop

2026-02-04T02:58:12+00:00

Use scoped for-each loop when iterating over device nodes to make code a
bit simpler.

Acked-by: Nicolas Ferre 
Reviewed-by: Jonathan Cameron 
Signed-off-by: Krzysztof Kozlowski 
Reviewed-by: Claudiu Beznea 
Link: https://patch.msgid.link/20260109-of-for-each-compatible-scoped-v3-2-c22fa2c0749a@oss.qualcomm.com
Signed-off-by: Rob Herring (Arm)

ARM: at91: remove unnecessary of_platform_default_populate calls

2026-01-10T15:35:02+00:00

The DT core will call of_platform_default_populate, so it is not
necessary for machine specific code to call it unless there are custom
match entries, auxdata or parent device. Neither of those apply here, so
remove the call.

Acked-by: Alexandre Belloni 
Tested-by: Alexandre Belloni 
Signed-off-by: Rob Herring (Arm) 
Link: https://lore.kernel.org/r/20260105-at91-probe-v3-3-594013ff2965@kernel.org
Signed-off-by: Claudiu Beznea

ARM: at91: Move PM init functions to .init_late hook

2026-01-10T15:35:01+00:00

Move the AT91 PM init functions to .init_late hook to ensure driver
dependencies have probed.

Acked-by: Alexandre Belloni 
Tested-by: Alexandre Belloni 
Signed-off-by: Rob Herring (Arm) 
Link: https://lore.kernel.org/r/20260105-at91-probe-v3-2-594013ff2965@kernel.org
Signed-off-by: Claudiu Beznea

Merge tag 'soc-arm-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

2025-10-02T00:41:15+00:00

Pull ARM SoC updates from Arnd Bergmann:
 "The at91 power management code and the TI AM33 platform each get a few
  updates for robustness, the other changes are just minor cleanups"

* tag 'soc-arm-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  ARM: versatile: clock: convert from round_rate() to determine_rate()
  ARM: rockchip: remove REGULATOR conditional to PM
  ARM: at91: pm: Remove 2.5V regulator
  ARM: OMAP2+: clock: convert from round_rate() to determine_rate()
  ARM: OMAP1: clock: convert from round_rate() to determine_rate()
  ARM: mach-hpe: Rework support and directory structure
  arm: omap2: use string choices helper
  ARM: OMAP2+: pm33xx-core: ix device node reference leaks in amx3_idle_init
  ARM: OMAP2+: use IS_ERR_OR_NULL() helper
  ARM: AM33xx: Implement TI advisory 1.0.36 (EMU0/EMU1 pins state on reset)
  ARM: at91: pm: save and restore ACR during PLL disable/enable
  ARM: at91: pm: fix MCKx restore routine
  ARM: at91: pm: fix .uhp_udp_mask specification for current SoCs
  ARM: shmobile: rcar-gen2: Use SZ_256K definition

ARM: at91: pm: Remove 2.5V regulator

2025-09-16T14:57:03+00:00

Remove 2.5V regulator since enabling and disabling this regulator is no
longer supported.

Signed-off-by: Ryan Wanner 
Link: https://lore.kernel.org/r/a6785a40648b315a07152bca261a42bbf0f356af.1757519351.git.Ryan.Wanner@microchip.com
Signed-off-by: Nicolas Ferre

ARM: at91: select ARCH_MICROCHIP

2025-09-03T16:51:00+00:00

Like with the ARM64 Microchip platforms, lets add a generic ARCH_MICROCHIP
symbol and select it so that drivers that are reused for multiple product
generation or lines, can just depend on it instead of adding each SoC
symbol as their dependencies.

Signed-off-by: Robert Marko 
Acked-by: Nicolas Ferre 
Acked-by: Daniel Machon 
Link: https://lore.kernel.org/r/20250813174720.540015-3-robert.marko@sartura.hr
Signed-off-by: Claudiu Beznea 
Signed-off-by: Nicolas Ferre

ARM: at91: pm: save and restore ACR during PLL disable/enable

2025-08-30T08:38:55+00:00

Add a new word in assembly to store ACR value during the calls
to at91_plla_disable/at91_plla_enable macros and use it.

Signed-off-by: Nicolas Ferre 
[cristian.birsan@microchip.com: remove ACR_DEFAULT_PLLA loading]
Signed-off-by: Cristian Birsan 
Link: https://lore.kernel.org/r/20250827145427.46819-4-nicolas.ferre@microchip.com
Reviewed-by: Alexandre Belloni 
Signed-off-by: Claudiu Beznea

ARM: at91: pm: fix MCKx restore routine

2025-08-30T08:38:55+00:00

The at91_mckx_ps_restore() assembly function is responsible for setting
back MCKx system bus clocks after exiting low power modes.

Fix a typo and use tmp3 variable instead of tmp2 to correctly set MCKx
to previously saved state.
Tmp2 was used without the needed changes in CSS and DIV. Moreover the
required bit 7, telling that MCR register's content is to be changed
(CMD/write), was not set.

Fix function comment to match tmp variables actually used.

Signed-off-by: Nicolas Ferre 
Fixes: 28eb1d40fe57 ("ARM: at91: pm: add support for MCK1..4 save/restore for ulp modes")
Link: https://lore.kernel.org/r/20250827145427.46819-3-nicolas.ferre@microchip.com
Reviewed-by: Alexandre Belloni 
[claudiu.beznea: s/sate/state in commit description]
Signed-off-by: Claudiu Beznea

ARM: at91: pm: fix .uhp_udp_mask specification for current SoCs

2025-08-30T08:38:55+00:00

All SoCs using this structure field .uhp_udp_mask in configuration
index 4 don't have the bit 7 specified: sam9x60 nor sam9x75.
Remove this bit from the mask definition to match register layout.

This mask is used in function at91_pm_verify_clocks().

Signed-off-by: Nicolas Ferre 
Link: https://lore.kernel.org/r/20250827145427.46819-2-nicolas.ferre@microchip.com
Reviewed-by: Alexandre Belloni 
Signed-off-by: Claudiu Beznea