Commit graph

295 commits

Author SHA1 Message Date
Linus Torvalds
2e368dd2bb ARM: SoC-related driver updates
Various driver updates for platforms. A bulk of this is smaller fixes or
 cleanups, but some of the new material this time around is:
 
  - Support for Nvidia Tegra234 SoC
  - Ring accelerator support for TI AM65x
  - PRUSS driver for TI platforms
  - Renesas support for R-Car V3U SoC
  - Reset support for Cortex-M4 processor on i.MX8MQ
 
 There are also new socinfo entries for a handful of different SoCs
 and platforms.
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC-related driver updates from Olof Johansson:
 "Various driver updates for platforms. A bulk of this is smaller fixes
  or cleanups, but some of the new material this time around is:

   - Support for Nvidia Tegra234 SoC

   - Ring accelerator support for TI AM65x

   - PRUSS driver for TI platforms

   - Renesas support for R-Car V3U SoC

   - Reset support for Cortex-M4 processor on i.MX8MQ

  There are also new socinfo entries for a handful of different SoCs and
  platforms"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (131 commits)
  drm/mediatek: reduce clear event
  soc: mediatek: cmdq: add clear option in cmdq_pkt_wfe api
  soc: mediatek: cmdq: add jump function
  soc: mediatek: cmdq: add write_s_mask value function
  soc: mediatek: cmdq: add write_s value function
  soc: mediatek: cmdq: add read_s function
  soc: mediatek: cmdq: add write_s_mask function
  soc: mediatek: cmdq: add write_s function
  soc: mediatek: cmdq: add address shift in jump
  soc: mediatek: mtk-infracfg: Fix kerneldoc
  soc: amlogic: pm-domains: use always-on flag
  reset: sti: reset-syscfg: fix struct description warnings
  reset: imx7: add the cm4 reset for i.MX8MQ
  dt-bindings: reset: imx8mq: add m4 reset
  reset: Fix and extend kerneldoc
  reset: reset-zynqmp: Added support for Versal platform
  dt-bindings: reset: Updated binding for Versal reset driver
  reset: imx7: Support module build
  soc: fsl: qe: Remove unnessesary check in ucc_set_tdm_rxtx_clk
  soc: fsl: qman: convert to use be32_add_cpu()
  ...
2020-10-24 10:39:22 -07:00
Alain Volmat
68a215164e reset: sti: reset-syscfg: fix struct description warnings
Fix formating of struct description to avoid warning highlighted
by W=1 compilation.

Fixes: e5d76075d9 ("drivers: reset: STi SoC system configuration reset controller support")
Signed-off-by: Alain Volmat <avolmat@me.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2020-09-23 14:32:49 +02:00
Peng Fan
f008c40327 reset: imx7: add the cm4 reset for i.MX8MQ
Add the cm4 reset used by the remoteproc driver

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2020-09-23 14:25:31 +02:00
Krzysztof Kozlowski
3315be5774 reset: Fix and extend kerneldoc
Fix W=1 compile warnings (invalid kerneldoc):

    drivers/reset/core.c:50: warning: Function parameter or member 'array' not described in 'reset_control'
    drivers/reset/core.c:50: warning: Function parameter or member 'deassert_count' not described in 'reset_control'

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2020-09-23 14:25:31 +02:00
Sai Krishna Potthuri
552f388bbe reset: reset-zynqmp: Added support for Versal platform
Updated the reset driver to support Versal platform.
As part of adding Versal support
- Added Versal specific compatible string.
- Reset Id and number of resets are different for Versal and ZynqMP,
hence taken care of these two based on compatible string.

Signed-off-by: Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@xilinx.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2020-09-23 14:25:31 +02:00
Anson Huang
a442abbbe1 reset: imx7: Support module build
Use module_platform_driver(), add module device table, author,
description and license to support module build, and
CONFIG_RESET_IMX7 is changed to default 'y' ONLY for i.MX7D,
other platforms need to select it in defconfig.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2020-09-23 14:25:31 +02:00
Greg Kroah-Hartman
5fedf0d295 Linux 5.9-rc3
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Merge 5.9-rc3 into usb-next

We want the USB fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-08-31 07:11:45 +02:00
Gustavo A. R. Silva
df561f6688 treewide: Use fallthrough pseudo-keyword
Replace the existing /* fall through */ comments and its variants with
the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary
fall-through markings when it is the case.

[1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
2020-08-23 17:36:59 -05:00
Nicolas Saenz Julienne
abffc82aae reset: Add Raspberry Pi 4 firmware reset controller
Raspberry Pi 4's co-processor controls some of the board's HW
initialization process, but it's up to Linux to trigger it when
relevant. Introduce a reset controller capable of interfacing with
RPi4's co-processor that models these firmware initialization routines as
reset lines.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Link: https://lore.kernel.org/r/20200629161845.6021-3-nsaenzjulienne@suse.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-08-18 13:01:10 +02:00
Arnd Bergmann
9c52a2647a SOC: TI Keystone driver update for v5.9
- TI K3 Ring Accelerator updates
  - Few non critical warining fixes
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Merge tag 'drivers_soc_for_5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone into arm/drivers

SOC: TI Keystone driver update for v5.9

 - TI K3 Ring Accelerator updates
 - Few non critical warining fixes

* tag 'drivers_soc_for_5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone:
  soc: TI knav_qmss: make symbol 'knav_acc_range_ops' static
  firmware: ti_sci: Replace HTTP links with HTTPS ones
  soc: ti/ti_sci_protocol.h: drop a duplicated word + clarify
  soc: ti: k3: fix semicolon.cocci warnings
  soc: ti: k3-ringacc: fix: warn: variable dereferenced before check 'ring'
  dmaengine: ti: k3-udma: Switch to k3_ringacc_request_rings_pair
  soc: ti: k3-ringacc: separate soc specific initialization
  soc: ti: k3-ringacc: add request pair of rings api.
  soc: ti: k3-ringacc: add ring's flags to dump
  soc: ti: k3-ringacc: Move state tracking variables under a struct
  dt-bindings: soc: ti: k3-ringacc: convert bindings to json-schema

Link: https://lore.kernel.org/r/1595711814-7015-1-git-send-email-santosh.shilimkar@oracle.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2020-07-27 14:24:51 +02:00
Alexander A. Klimov
a6df49f422 firmware: ti_sci: Replace HTTP links with HTTPS ones
Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.

Deterministic algorithm:
For each file:
  If not .svg:
    For each line:
      If doesn't contain `\bxmlns\b`:
        For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
	  If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`:
            If both the HTTP and HTTPS versions
            return 200 OK and serve the same content:
              Replace HTTP with HTTPS.

Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
2020-07-24 14:44:52 -07:00
Alexander A. Klimov
ffebbecaaa reset: Replace HTTP links with HTTPS ones
Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.

Deterministic algorithm:
For each file:
  If not .svg:
    For each line:
      If doesn't contain `\bxmlns\b`:
        For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
	  If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`:
            If both the HTTP and HTTPS versions
            return 200 OK and serve the same content:
              Replace HTTP with HTTPS.

Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2020-07-20 11:27:12 +02:00
Dejin Zheng
308646785e reset: intel: fix a compile warning about REG_OFFSET redefined
kernel test robot reports a compile warning about REG_OFFSET redefined
in the reset-intel-gw.c after merging commit e44ab4e14d ("regmap:
Simplify implementation of the regmap_read_poll_timeout() macro"). the
warning is like that:

drivers/reset/reset-intel-gw.c:18:0: warning: "REG_OFFSET" redefined
 #define REG_OFFSET GENMASK(31, 16)

In file included from ./arch/arm/mach-ixp4xx/include/mach/hardware.h:30:0,
                 from ./arch/arm/mach-ixp4xx/include/mach/io.h:15,
                 from ./arch/arm/include/asm/io.h:198,
                 from ./include/linux/io.h:13,
                 from ./include/linux/iopoll.h:14,
                 from ./include/linux/regmap.h:20,
                 from drivers/reset/reset-intel-gw.c:12:
./arch/arm/mach-ixp4xx/include/mach/platform.h:25:0: note: this is the location of the previous definition
 #define REG_OFFSET 3

Reported-by: kernel test robot <lkp@intel.com>
Fixes: c9aef213e3 ("reset: intel: Add system reset controller driver")
Signed-off-by: Dejin Zheng <zhengdejin5@gmail.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2020-07-20 11:01:19 +02:00
Maxime Ripard
a9701376ed reset: simple: Add reset callback
The reset-simple code lacks a reset callback that is still pretty easy to
implement. The only real thing to consider is the delay needed for a device
to be reset, so let's expose that as part of the reset-simple driver data.

Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2020-06-16 14:19:57 +02:00
Maxime Ripard
9357b04624 reset: Move reset-simple header out of drivers/reset
The reset-simple code can be useful for drivers outside of drivers/reset
that have a few reset controls as part of their features. Let's move it to
include/linux/reset.

Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2020-06-16 14:19:56 +02:00
Linus Torvalds
9aa900c809 Char/Misc driver patches for 5.8-rc1
Here is the large set of char/misc driver patches for 5.8-rc1
 
 Included in here are:
 	- habanalabs driver updates, loads
 	- mhi bus driver updates
 	- extcon driver updates
 	- clk driver updates (approved by the clock maintainer)
 	- firmware driver updates
 	- fpga driver updates
 	- gnss driver updates
 	- coresight driver updates
 	- interconnect driver updates
 	- parport driver updates (it's still alive!)
 	- nvmem driver updates
 	- soundwire driver updates
 	- visorbus driver updates
 	- w1 driver updates
 	- various misc driver updates
 
 In short, loads of different driver subsystem updates along with the
 drivers as well.
 
 All have been in linux-next for a while with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver updates from Greg KH:
 "Here is the large set of char/misc driver patches for 5.8-rc1

  Included in here are:

   - habanalabs driver updates, loads

   - mhi bus driver updates

   - extcon driver updates

   - clk driver updates (approved by the clock maintainer)

   - firmware driver updates

   - fpga driver updates

   - gnss driver updates

   - coresight driver updates

   - interconnect driver updates

   - parport driver updates (it's still alive!)

   - nvmem driver updates

   - soundwire driver updates

   - visorbus driver updates

   - w1 driver updates

   - various misc driver updates

  In short, loads of different driver subsystem updates along with the
  drivers as well.

  All have been in linux-next for a while with no reported issues"

* tag 'char-misc-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (233 commits)
  habanalabs: correctly cast u64 to void*
  habanalabs: initialize variable to default value
  extcon: arizona: Fix runtime PM imbalance on error
  extcon: max14577: Add proper dt-compatible strings
  extcon: adc-jack: Fix an error handling path in 'adc_jack_probe()'
  extcon: remove redundant assignment to variable idx
  w1: omap-hdq: print dev_err if irq flags are not cleared
  w1: omap-hdq: fix interrupt handling which did show spurious timeouts
  w1: omap-hdq: fix return value to be -1 if there is a timeout
  w1: omap-hdq: cleanup to add missing newline for some dev_dbg
  /dev/mem: Revoke mappings when a driver claims the region
  misc: xilinx-sdfec: convert get_user_pages() --> pin_user_pages()
  misc: xilinx-sdfec: cleanup return value in xsdfec_table_write()
  misc: xilinx-sdfec: improve get_user_pages_fast() error handling
  nvmem: qfprom: remove incorrect write support
  habanalabs: handle MMU cache invalidation timeout
  habanalabs: don't allow hard reset with open processes
  habanalabs: GAUDI does not support soft-reset
  habanalabs: add print for soft reset due to event
  habanalabs: improve MMU cache invalidation code
  ...
2020-06-07 10:59:32 -07:00
Peter Griffin
697fa27dc5 reset: hi6220: Add support for AO reset controller
This is required to bring Mali450 gpu out of reset.

Cc: Peter Griffin <peter.griffin@linaro.org>
Cc: Enrico Weigelt <info@metux.net>
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
[jstultz: Added comment, Fix void return build issue
Reported-by: kbuild test robot <lkp@intel.com>]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2020-05-06 12:03:43 +02:00
Anson Huang
e08672c039 reset: imx7: Add support for i.MX8MP SoC
i.MX8MP is a new SoC of i.MX8M family, it has same src IP
inside but with different module layout, add support for it.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2020-05-06 12:03:43 +02:00
Rajan Vaja
1b413581fe firmware: xilinx: Remove eemi ops for reset_get_status
Use direct function call instead of using eemi ops for
reset_get_status.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
Link: https://lore.kernel.org/r/1587761887-4279-14-git-send-email-jolly.shah@xilinx.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 15:45:08 +02:00
Rajan Vaja
cf23ec3531 firmware: xilinx: Remove eemi ops for reset_assert
Use direct function call instead of using eemi ops for
reset_assert.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
Link: https://lore.kernel.org/r/1587761887-4279-13-git-send-email-jolly.shah@xilinx.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 15:45:08 +02:00
Brendan Higgins
b460e0a9e2 reset: intel: add unspecified HAS_IOMEM dependency
Currently CONFIG_RESET_INTEL_GW=y implicitly depends on
CONFIG_HAS_IOMEM=y; consequently, on architectures without IOMEM we get
the following build error:

/usr/bin/ld: drivers/reset/reset-intel-gw.o: in function `intel_reset_probe':
drivers/reset/reset-intel-gw.c:185: undefined reference to `devm_platform_ioremap_resource'

Fix the build error by adding the unspecified dependency.

Signed-off-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2020-02-10 11:11:55 +01:00
Brendan Higgins
7fbcc53514 reset: brcmstb-rescal: add unspecified HAS_IOMEM dependency
Currently CONFIG_RESET_BRCMSTB_RESCAL=y implicitly depends on
CONFIG_HAS_IOMEM=y; consequently, on architectures without IOMEM we get
the following build error:

/usr/bin/ld: drivers/reset/reset-brcmstb-rescal.o: in function `brcm_rescal_reset_probe':
drivers/reset/reset-brcmstb-rescal.c:76: undefined reference to `devm_ioremap_resource'

Fix the build error by adding the unspecified dependency.

Signed-off-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2020-02-10 11:11:55 +01:00
Olof Johansson
3abda7cabe Reset controller updates for v5.6
This tag adds support for the Nuvoton NPCM, Intel Gatway SoC, and
 Broadcom BCM7216 RESCAL reset controllers, adds missing SCSSI reset
 controls for newer Uniphier SoCs, aligns the program flow in the
 devm_reset_controller_register, __devm_reset_control_get, and
 devm_reset_control_array_get functions for better consistency,
 and allows to build the Qcom AOSS reset driver as a module.
 
 This is based on v5.5-rc3 because the core patch depends on commit
 db23808615 ("reset: Do not register resource data for missing
 resets").
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Merge tag 'reset-for-5.6' of git://git.pengutronix.de/pza/linux into arm/drivers

Reset controller updates for v5.6

This tag adds support for the Nuvoton NPCM, Intel Gatway SoC, and
Broadcom BCM7216 RESCAL reset controllers, adds missing SCSSI reset
controls for newer Uniphier SoCs, aligns the program flow in the
devm_reset_controller_register, __devm_reset_control_get, and
devm_reset_control_array_get functions for better consistency,
and allows to build the Qcom AOSS reset driver as a module.

This is based on v5.5-rc3 because the core patch depends on commit
db23808615 ("reset: Do not register resource data for missing
resets").

* tag 'reset-for-5.6' of git://git.pengutronix.de/pza/linux:
  reset: qcom-aoss: Allow CONFIG_RESET_QCOM_AOSS to be a tristate
  reset: Add Broadcom STB RESCAL reset controller
  dt-bindings: reset: Document BCM7216 RESCAL reset controller
  reset: intel: Add system reset controller driver
  dt-bindings: reset: Add YAML schemas for the Intel Reset controller
  reset: uniphier: Add SCSSI reset control for each channel
  reset: Align logic and flow in managed helpers
  reset: npcm: add NPCM reset controller driver
  dt-bindings: reset: Add binding constants for NPCM7xx reset controller
  dt-bindings: reset: add NPCM reset controller documentation

Link: https://lore.kernel.org/r/dbbb2ca7490a0146d9ba632fd4d9f38063e03e9f.camel@pengutronix.de
Signed-off-by: Olof Johansson <olof@lixom.net>
2020-01-10 22:20:37 -08:00
Olof Johansson
40a9012a3b Initial support for hierarchical CPU arrangement, managed by PSCI and its
corresponding cpuidle driver. This support is based upon using the generic
 PM domain, which already supports devices belonging to CPUs.
 
 Finally, these is a DTS patch that enables the hierarchical topology to be
 used for the Qcom 410c Dragonboard, which supports the PSCI OS-initiated
 mode.
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Merge tag 'cpuidle_psci-v5.5-rc4' of git://git.linaro.org/people/ulf.hansson/linux-pm into arm/drivers

Initial support for hierarchical CPU arrangement, managed by PSCI and its
corresponding cpuidle driver. This support is based upon using the generic
PM domain, which already supports devices belonging to CPUs.

Finally, these is a DTS patch that enables the hierarchical topology to be
used for the Qcom 410c Dragonboard, which supports the PSCI OS-initiated
mode.

* tag 'cpuidle_psci-v5.5-rc4' of git://git.linaro.org/people/ulf.hansson/linux-pm: (611 commits)
  arm64: dts: Convert to the hierarchical CPU topology layout for MSM8916
  cpuidle: psci: Add support for PM domains by using genpd
  PM / Domains: Introduce a genpd OF helper that removes a subdomain
  cpuidle: psci: Support CPU hotplug for the hierarchical model
  cpuidle: psci: Manage runtime PM in the idle path
  cpuidle: psci: Prepare to use OS initiated suspend mode via PM domains
  cpuidle: psci: Attach CPU devices to their PM domains
  cpuidle: psci: Add a helper to attach a CPU to its PM domain
  cpuidle: psci: Support hierarchical CPU idle states
  cpuidle: psci: Simplify OF parsing of CPU idle state nodes
  cpuidle: dt: Support hierarchical CPU idle states
  of: base: Add of_get_cpu_state_node() to get idle states for a CPU node
  firmware: psci: Export functions to manage the OSI mode
  dt: psci: Update DT bindings to support hierarchical PSCI states
  cpuidle: psci: Align psci_power_state count with idle state count
  Linux 5.5-rc4
  locks: print unsigned ino in /proc/locks
  riscv: export flush_icache_all to modules
  riscv: reject invalid syscalls below -1
  riscv: fix compile failure with EXPORT_SYMBOL() & !MMU
  ...

Link: https://lore.kernel.org/r/20200102160820.3572-1-ulf.hansson@linaro.org
Signed-off-by: Olof Johansson <olof@lixom.net>
2020-01-08 10:26:29 -08:00
John Stultz
e2d5e8332c reset: qcom-aoss: Allow CONFIG_RESET_QCOM_AOSS to be a tristate
Allow CONFIG_RESET_QCOM_AOSS to be set as as =m to allow for the
driver to be loaded from a modules.

Also replaces the builtin_platform_driver() line with
module_platform_driver() and adds a MODULE_DEVICE_TABLE() entry.

Cc: Todd Kjos <tkjos@google.com>
Cc: Alistair Delva <adelva@google.com>
Cc: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2020-01-08 10:26:14 +01:00
Jim Quinlan
4cf176e523 reset: Add Broadcom STB RESCAL reset controller
On BCM7216 there is a special purpose reset controller named RESCAL
(reset calibration) which is necessary for SATA and PCIe0/1 to operate
correctly. This commit adds support for such a reset controller to be
available.

Signed-off-by: Jim Quinlan <jim2101024@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2020-01-06 10:02:03 +01:00
Dilip Kota
c9aef213e3 reset: intel: Add system reset controller driver
Add driver for the reset controller present on Intel
Gateway SoCs for performing reset management of the
devices present on the SoC. Driver also registers a
reset handler to peform the entire device reset.

Signed-off-by: Dilip Kota <eswara.kota@linux.intel.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2020-01-03 11:01:27 +01:00
Kunihiko Hayashi
f4aec227e9 reset: uniphier: Add SCSSI reset control for each channel
SCSSI has reset controls for each channel in the SoCs newer than Pro4,
so this adds missing reset controls for channel 1, 2 and 3. And more, this
moves MCSSI reset ID after SCSSI.

Fixes: 6b39fd590a ("reset: uniphier: add reset control support for SPI")
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2020-01-02 12:25:05 +01:00
Geert Uytterhoeven
a9457ed2eb reset: Align logic and flow in managed helpers
__devm_reset_control_get() and devm_reset_control_array_get() are very
similar, but they do not look similar, due to inverted logic.
Make them more similar, following the "bail out early" paradigm.

Adjust the logic and flow in devm_reset_controller_register() to match
the two other functions.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2020-01-02 12:25:05 +01:00
Tomer Maimon
9c81b2ccf8 reset: npcm: add NPCM reset controller driver
Add Nuvoton NPCM BMC reset controller driver.

Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2020-01-02 12:25:05 +01:00
Sudeep Holla
34ce3c5e69 reset: reset-scmi: Match scmi device by both name and protocol id
The scmi bus now has support to match the driver with devices not only
based on their protocol id but also based on their device name if one is
available. This was added to cater the need to support multiple devices
and drivers for the same protocol.

Let us add the name "reset" to scmi_device_id table in the driver so
that in matches only with device with the same name and protocol id
SCMI_PROTOCOL_RESET.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2019-12-24 11:37:35 +00:00
Geert Uytterhoeven
db23808615 reset: Do not register resource data for missing resets
When an optional reset is not present, __devm_reset_control_get() and
devm_reset_control_array_get() still register resource data to release
the non-existing reset on cleanup, which is futile.

Fix this by skipping NULL reset control pointers.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2019-12-10 11:43:37 +01:00
Geert Uytterhoeven
723c0011c7 reset: Fix {of,devm}_reset_control_array_get kerneldoc return types
of_reset_control_array_get() and devm_reset_control_array_get() return
struct reset_control pointers, not internal struct reset_control_array
pointers, just like all other reset control API calls.

Correct the kerneldoc to match the code.

Fixes: 17c82e206d ("reset: Add APIs to manage array of resets")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2019-12-10 11:43:37 +01:00
Florian Fainelli
ce89d8d3a7 reset: brcmstb: Remove resource checks
The use of IS_ALIGNED() is incorrect, the typical resource we pass looks
like this: start: 0x8404318, size: 0x30. When using IS_ALIGNED() we will
get the following 0x8404318 & (0x18 - 1) = 0x10 which is definitively
not equal to 0, same goes with the size. These two checks would make the
driver fail probing.

Remove the resource checks, since there should be no constraint on the
base addresse or size.

Fixes: 77750bc089 ("reset: Add Broadcom STB SW_INIT reset controller driver")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2019-12-10 11:43:37 +01:00
Linus Torvalds
ec939e4c94 ARM: SoC-related driver updates
Various driver updates for platforms:
 
  - A larger set of work on Tegra 2/3 around memory controller and
  regulator features, some fuse cleanups, etc..
 
  - MMP platform drivers, in particular for USB PHY, and other smaller
  additions.
 
  - Samsung Exynos 5422 driver for DMC (dynamic memory configuration),
  and ASV (adaptive voltage), allowing the platform to run at more
  optimal operating points.
 
  - Misc refactorings and support for RZ/G2N and R8A774B1 from Renesas
 
  - Clock/reset control driver for TI/OMAP
 
  - Meson-A1 reset controller support
 
  - Qualcomm sdm845 and sda845 SoC IDs for socinfo
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC driver updates from Olof Johansson:
 "Various driver updates for platforms:

   - A larger set of work on Tegra 2/3 around memory controller and
     regulator features, some fuse cleanups, etc..

   - MMP platform drivers, in particular for USB PHY, and other smaller
     additions.

   - Samsung Exynos 5422 driver for DMC (dynamic memory configuration),
     and ASV (adaptive voltage), allowing the platform to run at more
     optimal operating points.

   - Misc refactorings and support for RZ/G2N and R8A774B1 from Renesas

   - Clock/reset control driver for TI/OMAP

   - Meson-A1 reset controller support

   - Qualcomm sdm845 and sda845 SoC IDs for socinfo"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (150 commits)
  firmware: arm_scmi: Fix doorbell ring logic for !CONFIG_64BIT
  soc: fsl: add RCPM driver
  dt-bindings: fsl: rcpm: Add 'little-endian' and update Chassis definition
  memory: tegra: Consolidate registers definition into common header
  memory: tegra: Ensure timing control debug features are disabled
  memory: tegra: Introduce Tegra30 EMC driver
  memory: tegra: Do not handle error from wait_for_completion_timeout()
  memory: tegra: Increase handshake timeout on Tegra20
  memory: tegra: Print a brief info message about EMC timings
  memory: tegra: Pre-configure debug register on Tegra20
  memory: tegra: Include io.h instead of iopoll.h
  memory: tegra: Adapt for Tegra20 clock driver changes
  memory: tegra: Don't set EMC rate to maximum on probe for Tegra20
  memory: tegra: Add gr2d and gr3d to DRM IOMMU group
  memory: tegra: Set DMA mask based on supported address bits
  soc: at91: Add Atmel SFR SN (Serial Number) support
  memory: atmel-ebi: switch to SPDX license identifiers
  memory: atmel-ebi: move NUM_CS definition inside EBI driver
  soc: mediatek: Refactor bus protection control
  soc: mediatek: Refactor sram control
  ...
2019-12-05 11:43:31 -08:00
Philipp Zabel
a48108c0c2 reset: improve of_xlate documentation
Mention of_reset_simple_xlate as the default if of_xlate is not set.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2019-10-24 10:50:25 +02:00
Philipp Zabel
77d551b9ad reset: fix of_reset_control_get_count kerneldoc comment
Add a newline and remove a superfluous kerneldoc marker before the
of_reset_control_get_count kerneldoc comment, to fix documentation
build warnings:

  ./drivers/reset/core.c:832: warning: Incorrect use of kernel-doc format:  * of_reset_control_get_count - Count number of resets available with a device
  ./drivers/reset/core.c:840: warning: Function parameter or member 'node' not described in 'of_reset_control_get_count'

Fixes: 17c82e206d ("reset: Add APIs to manage array of resets")
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2019-10-24 10:26:33 +02:00
Philipp Zabel
47db565251 reset: fix of_reset_simple_xlate kerneldoc comment
The flags parameter never made it into the API, but was erroneously
included in the kerneldoc comment. Remove it to fix a documentation
build warning:

  ./drivers/reset/core.c:86: warning: Excess function parameter 'flags' description in 'of_reset_simple_xlate'

Fixes: 61fc413176 ("reset: Add reset controller API")
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2019-10-24 10:26:33 +02:00
Andreas Färber
3ab831e50c reset: simple: Add Realtek RTD1195/RTD1295
Enable RESET_SIMPLE for ARCH_REALTEK.
They can reuse the DesignWare bindings to avoid a new compatible.

Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2019-10-24 10:07:46 +02:00
Andreas Färber
5ac33eebf1 reset: simple: Keep alphabetical order
Restore alphabetical order for Kconfig dependencies and help text.
Compatibles got out of order too, but no functional change done here.

Goal is to make it obvious where to add new platforms.

Fixes: 64c47b624f ("reset: Add reset controller support for BM1880 SoC")
Fixes: 1d7592f84f ("reset: simple: Enable for ASPEED systems")
Fixes: 96a2f50305 ("reset: build simple reset controller driver for Agilex")
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2019-10-24 10:07:32 +02:00
Philipp Zabel
c1b065b4f2 reset: zynqmp: Make reset_control_ops const
The zynqmp_reset_ops structure is never modified. Make it const.

Acked-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2019-10-22 14:39:01 +02:00
Philipp Zabel
b1418bc852 reset: hisilicon: hi3660: Make reset_control_ops const
The hi3660_reset_ops structure is never modified. Make it const.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2019-10-22 13:55:32 +02:00
Dinh Nguyen
96a2f50305 reset: build simple reset controller driver for Agilex
The Intel SoCFPGA Agilex platform shares the same reset controller that
is on the Stratix10.

Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2019-10-22 11:09:19 +02:00
Kishon Vijay Abraham I
532f9cd6ee reset: Fix memory leak in reset_control_array_put()
Memory allocated for 'struct reset_control_array' in
of_reset_control_array_get() is never freed in
reset_control_array_put() resulting in kmemleak showing
the following backtrace.

  backtrace:
    [<00000000c5f17595>] __kmalloc+0x1b0/0x2b0
    [<00000000bd499e13>] of_reset_control_array_get+0xa4/0x180
    [<000000004cc02754>] 0xffff800008c669e4
    [<0000000050a83b24>] platform_drv_probe+0x50/0xa0
    [<00000000d3a0b0bc>] really_probe+0x108/0x348
    [<000000005aa458ac>] driver_probe_device+0x58/0x100
    [<000000008853626c>] device_driver_attach+0x6c/0x90
    [<0000000085308d19>] __driver_attach+0x84/0xc8
    [<00000000080d35f2>] bus_for_each_dev+0x74/0xc8
    [<00000000dd7f015b>] driver_attach+0x20/0x28
    [<00000000923ba6e6>] bus_add_driver+0x148/0x1f0
    [<0000000061473b66>] driver_register+0x60/0x110
    [<00000000c5bec167>] __platform_driver_register+0x40/0x48
    [<000000007c764b4f>] 0xffff800008c6c020
    [<0000000047ec2e8c>] do_one_initcall+0x5c/0x1b0
    [<0000000093d4b50d>] do_init_module+0x54/0x1d0

Fixes: 17c82e206d ("reset: Add APIs to manage array of resets")
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2019-10-22 10:56:41 +02:00
Xingyu Chen
bdb369e1e9 reset: add support for the Meson-A1 SoC Reset Controller
The number of RESET registers and offset of RESET_LEVEL register for
Meson-A1 are different from previous SoCs, In order to describe these
differences, we introduce the struct meson_reset_param.

Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Xingyu Chen <xingyu.chen@amlogic.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2019-10-08 15:12:49 +02:00
Kunihiko Hayashi
8c2def0f06 reset: uniphier-glue: Add Pro5 USB3 support
Pro5 SoC has same scheme of USB3 reset as Pro4, so the data for Pro5 is
equivalent to Pro4.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2019-10-03 19:56:51 +02:00
Andy Shevchenko
b89a8da92d reset: Remove copy'n'paste redundancy in the comments
It seems the commit bb475230b8
("reset: make optional functions really optional")
brought couple of redundant lines in the comments.

Drop them here.

Cc: Ramiro Oliveira <Ramiro.Oliveira@synopsys.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2019-10-03 19:56:51 +02:00
Jerome Brunet
9c41152cfd reset: meson-audio-arb: add sm1 support
Add the new arb reset lines of the SM1 SoC family

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2019-10-03 19:56:51 +02:00
Linus Torvalds
cef0aa0ce8 ARM: SoC fixes
A few fixes that have trickled in through the merge window:
 
  - Video fixes for OMAP due to panel-dpi driver removal
  - Clock fixes for OMAP that broke no-idle quirks + nfsroot on DRA7
  - Fixing arch version on ASpeed ast2500
  - Two fixes for reset handling on ARM SCMI
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Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC fixes from Olof Johansson:
 "A few fixes that have trickled in through the merge window:

   - Video fixes for OMAP due to panel-dpi driver removal

   - Clock fixes for OMAP that broke no-idle quirks + nfsroot on DRA7

   - Fixing arch version on ASpeed ast2500

   - Two fixes for reset handling on ARM SCMI"

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  ARM: aspeed: ast2500 is ARMv6K
  reset: reset-scmi: add missing handle initialisation
  firmware: arm_scmi: reset: fix reset_state assignment in scmi_domain_reset
  bus: ti-sysc: Remove unpaired sysc_clkdm_deny_idle()
  ARM: dts: logicpd-som-lv: Fix i2c2 and i2c3 Pin mux
  ARM: dts: am3517-evm: Fix missing video
  ARM: dts: logicpd-torpedo-baseboard: Fix missing video
  ARM: omap2plus_defconfig: Fix missing video
  bus: ti-sysc: Fix handling of invalid clocks
  bus: ti-sysc: Fix clock handling for no-idle quirks
2019-09-30 10:04:28 -07:00
Sudeep Holla
61423712db reset: reset-scmi: add missing handle initialisation
scmi_reset_data->handle needs to be initialised at probe, so that it
can be later used to access scmi reset protocol APIs using the same.

Since it was tested with a module that obtained handle elsewhere,
it was missed easily. Add the missing scmi_reset_data->handle
initialisation to fix the issue.

Fixes: c8ae9c2da1 ("reset: Add support for resets provided by SCMI")
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Reported-by: Etienne Carriere <etienne.carriere@linaro.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2019-09-18 13:42:44 +01:00