Originally this was used in by the switch core driver to issue a reset.
But it turns out, this isn't just a switch core reset but instead it
will reset almost the complete SoC.
Instead of adding almost all devices of the SoC a shared reset line,
issue the reset once early on startup. Keep the reset controller for
backwards compatibility, but make the actual reset a noop.
Suggested-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Michael Walle <michael@walle.cc>
Tested-by: Steen Hegelund <Steen.Hegelund@microchip.com> on Sparx5
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://lore.kernel.org/r/20220826115607.1148489-2-michael@walle.cc
Pull more ARM SoC updates from Arnd Bergmann:
"These updates came in after I had already tagged the branches, but
they still seem appropriate for 6.0 and most of them were part of
linux-next through other trees.
- The reset controller tree adds one new driver for the TI TPS380x
power management chip and a few minor changes in other drivers
- Apple M1 now has a DT entry for the NVMe controller after the
driver was merged, and has a new mailing list in the MAINTAINERS
file.
- Fixes for USB on the Socionext Uniphier platforms and the network
controller on Intel Cyclone5"
* tag 'arm-late-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
arm64: dts: uniphier: Fix USB interrupts for PXs3 SoC
ARM: dts: uniphier: Fix USB interrupts for PXs2 SoC
arm64: dts: apple: t8103: Add ANS2 NVMe nodes
reset: tps380x: Fix spelling mistake "Voltags" -> "Voltage"
reset: tps380x: Add TPS380x device driver supprt
dt-bindings: reset: Add TPS380x documentation
dt-bindings: reset: renesas,rzg2l-usbphy-ctrl: Document RZ/G2UL USBPHY Control bindings
ARM: dts: add EMAC AXI settings for Cyclone5
reset: reset-simple should depends on HAS_IOMEM
Revert "reset: microchip-sparx5: allow building as a module"
reset: a10sr: allow building under COMPILE_TEST
reset: allow building of reset simple driver if expert config selected
reset: microchip-sparx5: allow building as a module
arm64: dts: apple: Re-parent ANS2 power domains
MAINTAINERS: add ARM/APPLE MACHINE mailing list
Pull SPDX updates from Greg KH:
"Here is the set of SPDX comment updates for 6.0-rc1.
Nothing huge here, just a number of updated SPDX license tags and
cleanups based on the review of a number of common patterns in GPLv2
boilerplate text.
Also included in here are a few other minor updates, two USB files,
and one Documentation file update to get the SPDX lines correct.
All of these have been in the linux-next tree for a very long time"
* tag 'spdx-6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx: (28 commits)
Documentation: samsung-s3c24xx: Add blank line after SPDX directive
x86/crypto: Remove stray comment terminator
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_406.RULE
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_398.RULE
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_391.RULE
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_390.RULE
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_385.RULE
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_320.RULE
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_319.RULE
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_318.RULE
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_298.RULE
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_292.RULE
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_179.RULE
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_168.RULE (part 2)
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_168.RULE (part 1)
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_160.RULE
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_152.RULE
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_149.RULE
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_147.RULE
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_133.RULE
...
The TI TPS380x family [1] is a voltage supervisor with a dedicated
manual reset (mr) line input and a reset output. The chip(s) have a
build in reset delay, depending on the chip partnumber. This simple
driver addresses this so the cosumer don't need to care about it.
[1] https://www.ti.com/product/TPS3801
Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
[p.zabel@pengutronix.de: drop Todo comment about min/typ/max reset time]
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://lore.kernel.org/r/20220530092226.748644-2-m.felsch@pengutronix.de
The reset-simple driver does not build on all architecuters as it requires
devm_ioremap_resource() which is only built when CONFIG_HAS_IOMEM is enabled
in the kenrel. Fix the following error by depending on CONFIG_HAS_IOMEM:
drivers/reset/reset-simple.o: in function `reset_simple_probe':
reset-simple.c:(.text+0x3aa): undefined reference to `devm_ioremap_resource'
Fixes: 18d1909be3 ("reset: allow building of reset simple driver if expert config selected")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Ben Dooks <ben.dooks@sifive.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://lore.kernel.org/r/20220719085200.203688-1-ben.dooks@sifive.com
Merge the new SoC support from Tomer Maimon:
"This patchset adds initial support for the Nuvoton
Arbel NPCM8XX Board Management controller (BMC) SoC family.
The Nuvoton Arbel NPCM8XX SoC is a fourth-generation BMC.
The NPCM8XX computing subsystem comprises a quadcore ARM
Cortex A35 ARM-V8 architecture.
This patchset adds minimal architecture and drivers such as:
Clocksource, Clock, Reset, and WD.
Some of the Arbel NPCM8XX peripherals are based on Poleg NPCM7XX.
This patchset was tested on the Arbel NPCM8XX evaluation board."
I'm leaving out the clk controller driver, which is still under
review.
* nuvoton/newsoc:
arm64: defconfig: Add Nuvoton NPCM family support
arm64: dts: nuvoton: Add initial NPCM845 EVB device tree
arm64: dts: nuvoton: Add initial NPCM8XX device tree
arm64: npcm: Add support for Nuvoton NPCM8XX BMC SoC
dt-bindings: arm: npcm: Add nuvoton,npcm845 GCR compatible string
dt-bindings: arm: npcm: Add nuvoton,npcm845 compatible string
dt-bindings: arm: npcm: Add maintainer
reset: npcm: Add NPCM8XX support
dt-bindings: reset: npcm: Add support for NPCM8XX
reset: npcm: using syscon instead of device data
ARM: dts: nuvoton: add reset syscon property
dt-bindings: reset: npcm: add GCR syscon property
dt-binding: clk: npcm845: Add binding for Nuvoton NPCM8XX Clock
dt-bindings: watchdog: npcm: Add npcm845 compatible string
dt-bindings: timer: npcm: Add npcm845 compatible string
Updated the NPCM reset driver to add support for Nuvoton BMC NPCM8XX SoC.
As part of adding NPCM8XX support:
- Add NPCM8XX specific compatible string.
- Add NPCM8XX USB reset.
- Add data to handle architecture-specific reset parameters.
- Some of the Reset Id and number of resets are different from NPCM7XX.
Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Using syscon device tree property instead of device data to handle the
NPCM general control registers.
In case the syscon not found the code still search for nuvoton,npcm750-gcr
to support DTS backward compatibility.
Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Based on the normalized pattern:
this program is free software you can redistribute it and/or modify it
under the terms of the gnu general public license version 2 as
published by the free software foundation this program is distributed
as is without any warranty of any kind whether express or implied
without even the implied warranty of merchantability or fitness for a
particular purpose see the gnu general public license for more details
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference.
Reviewed-by: Allison Randal <allison@lohutok.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
TI Driver updates for v5.19
* wkup_m3: io isolation, voltage scaling, vtt regulator and a debug option to stop m3 in suspend.
* tisci: support for polled mode for system suspend, reset driver is now enabled for COMPILE_TEST
* knav, dma.. misc cleanups for IS_ERR, pm_run_time*, and various other fixups.
* tag 'ti-driver-soc-for-v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ti/linux:
soc: ti: wkup_m3_ipc: Add debug option to halt m3 in suspend
soc: ti: wkup_m3_ipc: Add support for i2c voltage scaling
soc: ti: wkup_m3_ipc: Add support for IO Isolation
soc: ti: knav_qmss_queue: Use IS_ERR instead of IS_ERR_OR_NULL when checking knav_queue_open() result
soc: ti: pm33xx: using pm_runtime_resume_and_get instead of pm_runtime_get_sync
firmware: ti_sci: Switch transport to polled mode during system suspend
soc: ti: wkup_m3_ipc: Add support for toggling VTT regulator
soc: ti: knav_qmss_queue: Use pm_runtime_resume_and_get instead of pm_runtime_get_sync
soc: ti: knav_dma: Use pm_runtime_resume_and_get instead of pm_runtime_get_sync
reset: ti-sci: Allow building under COMPILE_TEST
soc: ti: ti_sci_pm_domains: Check for null return of devm_kcalloc
soc: ti: omap_prm: Use of_device_get_match_data()
soc: ti: pruss: using pm_runtime_resume_and_get instead of pm_runtime_get_sync
soc: ti: replace usage of found with dedicated list iterator variable
soc: ti: wkup_m3_ipc: fix platform_get_irq.cocci warning
Link: https://lore.kernel.org/r/20220507163424.pvqnwrxpoo73lmp2@debtless
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reset controller updates for v5.19
Add Meson-S4 SoC reset controller support to reset-meson, AST2600 LPC
reset controller support to reset-simple, and R9A07G054 USBPHY reset
controller support to reset-rzg2l-usbphy-ctrl. Add ACPI _RST support to
device_reset(), simplify the uniphier-glue reset driver using bulk API
and devres and clean up its dt-bindings docs. Convert most dt-bindings
docs from txt to yaml.
* tag 'reset-for-v5.19' of git://git.pengutronix.de/pza/linux:
dt-bindings: reset: st,sti-powerdown: Convert to yaml
dt-bindings: reset: st,sti-picophyreset: Convert to yaml
dt-bindings: reset: socfpga: Convert to yaml
dt-bindings: reset: snps,axs10x-reset: Convert to yaml
dt-bindings: reset: nuvoton,npcm-reset: Convert to yaml
dt-bindings: reset: lantiq,reset: Convert to yaml
dt-bindings: reset: bitmain,bm1880-reset: Convert to yaml
dt-bindings: reset: berlin: Convert to yaml
dt-bindings: reset: ath79: Convert to yaml
dt-bindings: reset: amlogic,meson-axg-audio-arb: Convert to yaml
dt-bindings: reset: uniphier-glue: Clean up clocks, resets, and their names using compatible string
reset: Kconfig: Make RESET_RZG2L_USBPHY_CTRL depend on ARCH_RZG2L
reset: ACPI reset support
reset: simple: Add AST2600 compatible
reset: reset-meson: add support for the Meson-S4 SoC Reset Controller
dt-bindings: reset: add bindings for the Meson-S4 SoC Reset Controller
dt-bindings: reset: Add compatible for Meson-S4 Reset Controller
reset: uniphier-glue: Use devm_add_action_or_reset()
reset: uniphier-glue: Use reset_control_bulk API
Link: https://lore.kernel.org/r/20220503160057.46625-1-p.zabel@pengutronix.de
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Some of the IO devices like I2C or SPI require reset at runtime to
recover from an error condition without changing the power state of
the system. Added check for ACPI handle and a call to method '__RST'
if supported. Devices using device tree method are unaffected by this.
Signed-off-by: Krishna Yarlagadda <kyarlagadda@nvidia.com>
[p.zabel@pengutronix.de: wrap in #ifdef CONFIG_ACPI due to missing stubs]
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://lore.kernel.org/r/20220307135626.16673-1-kyarlagadda@nvidia.com
