Merge tag 'tegra-for-5.10-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/drivers

soc/tegra: Changes for v5.10-rc1

These changes contain a bit of cleanup and chip support for the upcoming
Tegra234 SoC.

* tag 'tegra-for-5.10-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  soc/tegra: pmc: Add Tegra234 support
  soc/tegra: pmc: Reorder reset sources/levels definitions
  soc/tegra: misc: Add Tegra234 support
  soc/tegra: fuse: Add Tegra234 support
  soc/tegra: fuse: Implement tegra_is_silicon()
  soc/tegra: fuse: Extract tegra_get_platform()

Link: https://lore.kernel.org/r/20200918150303.3938852-2-thierry.reding@gmail.comSigned-off-by: Olof Johansson <olof@lixom.net>

Merge tag 'tee-dev-cleanup-for-v5.10' of git://git.linaro.org:/people/jens.wiklander/linux-tee into arm/drivers

Simplify tee_device_register() and friends

Uses cdev_device_add() instead of the cdev_add() device_add()
combination.

Initializes dev->groups instead of direct calls to sysfs_create_group()
and friends.

* tag 'tee-dev-cleanup-for-v5.10' of git://git.linaro.org:/people/jens.wiklander/linux-tee:
  tee: avoid explicit sysfs_create/delete_group by initialising dev->groups
  tee: replace cdev_add + device_add with cdev_device_add

Link: https://lore.kernel.org/r/20200918144130.GB1219771@jadeSigned-off-by: Olof Johansson <olof@lixom.net>

Merge tag 'renesas-drivers-for-v5.10-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel into arm/drivers

Renesas driver updates for v5.10 (take two)

  - Add core support for the R-Car V3U (R8A779A0) SoC, including System
    Controller (SYSC) and Reset (RST) support,
  - Various Kconfig cleanups.

* tag 'renesas-drivers-for-v5.10-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel:
  soc: renesas: r8a779a0-sysc: Add r8a779a0 support
  soc: renesas: rcar-rst: Add support for R-Car V3U
  soc: renesas: Identify R-Car V3U
  soc: renesas: Sort driver description title
  soc: renesas: Use ARM32/ARM64 for menu description
  dt-bindings: clock: Add r8a779a0 CPG Core Clock Definitions
  dt-bindings: power: Add r8a779a0 SYSC power domain definitions

Link: https://lore.kernel.org/r/20200918124800.15555-4-geert+renesas@glider.beSigned-off-by: Olof Johansson <olof@lixom.net>

The PMC block is largely similar to that found on earlier chips, but
not completely compatible. Allow binding to the instantiation found on
Tegra234.
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

Move the definitions of reset sources and levels into a more natural
location.
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

The MISC block is largely similar to that found on earlier chips, but
not completely compatible. Allow binding to the instantiation found on
Tegra234.
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

Add support for FUSE block found on the Tegra234 SoC, which is largely
similar to the IP found on previous generations.
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

This function can be used by drivers to determine whether code is
running on silicon or on a simulation platform.
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

This function extracts the PRE_SI_PLATFORM field from the HIDREV
register and can be used to determine which platform the kernel runs on
(silicon, simulation, ...). Note that while only Tegra194 and later
define this field, it should be safe to call this on prior generations
as well since this field should read as 0, indicating silicon.
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

If the dev->groups is initialised, the sysfs group is created as part
of device_add call. There is no need to call sysfs_create/delete_group
explicitly.
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

Commit 233ed09d ("chardev: add helper function to register char devs
with a struct device") added a helper function 'cdev_device_add'.

Make use of cdev_device_add in tee_device_register to replace cdev_add
and device_add. Since cdev_device_add takes care of setting the
kobj->parent, drop explicit initialisation in tee_device_alloc.
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

Add support for R-Car V3U (R8A779A0) SoC power areas and register
access, because register specification differs from R-Car Gen2/3.

Inspired by patches in the BSP by Tho Vu.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/1599810232-29035-5-git-send-email-yoshihiro.shimoda.uh@renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

Merge tag 'scmi-updates-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/drivers

ARM SCMI updates for v5.10

Couple of main additions: SCMI system protocol support and ability to
build SCMI driver as a single module which is needed by some transports
like virtio as they may not be ready early during the boot. This also
includes constification of scmi ops and related function pointers.

* tag 'scmi-updates-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  firmware: arm_scmi: Enable building as a single module
  firmware: arm_scmi: Move scmi protocols registration into the driver
  firmware: arm_scmi: Move scmi bus init and exit calls into the driver
  firmware: smccc: Export both smccc functions
  firmware: arm_scmi: Fix NULL pointer dereference in mailbox_chan_free
  firmware: arm_scmi: Add SCMI device for system power protocol
  firmware: arm_scmi: Add system power protocol support
  firmware: arm_scmi: Constify static scmi-ops
  firmware: arm_scmi: Constify ops pointers in scmi_handle
  cpufreq: arm_scmi: Constify scmi_perf_ops pointers

Link: https://lore.kernel.org/r/20200914075018.2rvytvghxyutcbk4@bogusSigned-off-by: Olof Johansson <olof@lixom.net>

Now, with all the plumbing in place to enable building scmi as a module
instead of built-in modules, let us enable the same.

Link: https://lore.kernel.org/r/20200907195046.56615-5-sudeep.holla@arm.comTested-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

In preparation to enable building SCMI as a single module, let us move
the SCMI protocol registration call into the driver. This enables us
to also add unregistration of the SCMI protocols.

The main reason for this is to keep it simple instead of maintaining
it as separate modules and dealing with all possible initcall races
and deferred probe handling. We can move it as separate modules if
needed in future.

Link: https://lore.kernel.org/r/20200907195046.56615-4-sudeep.holla@arm.comTested-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

In preparation to enable building scmi as a single module, let us move
the scmi bus {de-,}initialisation call into the driver.

The main reason for this is to keep it simple instead of maintaining
it as separate modules and dealing with all possible initcall races
and deferred probe handling. We can move it as separate modules if
needed in future.

Link: https://lore.kernel.org/r/20200907195046.56615-3-sudeep.holla@arm.comTested-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

We need to export both arm_smccc_1_1_get_conduit and arm_smccc_get_version
to allow several modules make use of them. Arm FFA, Arm SCMI and PTP
drivers are few drivers that are planning to use these functions.

Let us export them in preparation to add support for SCMI as module.

Link: https://lore.kernel.org/r/20200907195046.56615-2-sudeep.holla@arm.comSigned-off-by: Sudeep Holla <sudeep.holla@arm.com>

This pull request contains Broadcom SoCs drivers changes for 5.10,
please pull the following:

- Alvaro adds support for the BCM63xx (DSL) SoCs power domain controller
  and adds support for the 6318, 6328, 6362, 63268.

- Florian adds support for tuning the Bus Interface Unit on 72164 and
  72165, enables the Brahma-B53 and Cortex-A72 read-ahead cache for the
  64-bit capable ARCH_BRCMSTB platforms, and finally updates the GISB
  driver to support breakpoint notifications.

* tag 'arm-soc/for-5.10/drivers' of https://github.com/Broadcom/stblinux:
  bus: brcmstb_gisb: Add support for breakpoint interrupts
  dt-bindings: bus: Document breakpoint interrupt for gisb-arb
  soc: bcm: brcmstb: biuctrl: Change RAC data line prefetching after 4 consecutive lines
  soc: bcm: brcmstb: biuctrl: Change RAC prefetch distance from +/-1 to +/- 2
  soc: bcm: brcmstb: biuctrl: Tune MCP settings for 72165
  soc: bcm: brcmstb: biuctrl: Tune MCP settings for 72164
  MIPS: BMIPS: dts: add BCM63268 power domain support
  MIPS: BMIPS: dts: add BCM6362 power domain support
  MIPS: BMIPS: dts: add BCM6328 power domain support
  soc: bcm: add BCM63xx power domain driver
  MIPS: BMIPS: add BCM6318 power domain definitions
  MIPS: BMIPS: add BCM63268 power domain definitions
  MIPS: BMIPS: add BCM6362 power domain definitions
  MIPS: BMIPS: add BCM6328 power domain definitions
  dt-bindings: soc: brcm: add BCM63xx power domain binding
  soc: bcm: brcmstb: biuctrl: Enable Read-ahead cache
  bus: brcmstb_gisb: Shorten prints

Link: https://lore.kernel.org/r/20200912032153.1216354-3-f.fainelli@gmail.comSigned-off-by: Olof Johansson <olof@lixom.net>

Merge tag 'memory-controller-drv-5.10' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl into arm/drivers

Memory controller drivers for v5.10

1. Fixes in several drivers for GCC warnings, including kerneldoc fixes
   and issues discovered while compile testing.
2. Enable compile testing of most of the drivers.
3. Use dev_err_probe() to simplify the code.
4. omap-gpmc: fix off by one errors, code cleanups and improvements.
5. tegra: remove the GPU from DRM IOMMU group so it would use its own;
   few minor fixes.
6. brcmstb_dpfe: fix memory leak and array index out of bounds.

* tag 'memory-controller-drv-5.10' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl: (26 commits)
  memory: fsl-corenet-cf: Fix handling of platform_get_irq() error
  memory: omap-gpmc: Fix -Wunused-function warnings
  memory: tegra: Remove GPU from DRM IOMMU group
  memory: tegra186-emc: Simplify with dev_err_probe()
  memory: brcmstb_dpfe: Simplify with dev_err_probe()
  memory: samsung: exynos5422-dmc: add missing and fix kerneldoc
  memory: samsung: exynos5422-dmc: remove unused exynos5_dmc members
  memory: samsung: exynos5422-dmc: rename timing register fields variables
  memory: emif: Remove bogus debugfs error handling
  memory: omap-gpmc: Fix build error without CONFIG_OF
  memory: omap-gpmc: Fix a couple off by ones
  memory: brcmstb_dpfe: fix array index out of bounds
  memory: brcmstb_dpfe: Fix memory leak
  memory: tegra: Correct shift value of apew
  memory: Enable compile testing for most of the drivers
  memory: brcmstb_dpfe: add separate entry for compile test
  memory: tegra: tegra210-emc: fix indentation
  memory: renesas-rpc-if: simplify with PTR_ERR_OR_ZERO
  memory: omap-gpmc: consistently use !res for NULL checks
  memory: omap-gpmc: use WARN() instead of BUG() on wrong free
  ...

Link: https://lore.kernel.org/r/20200907150611.11267-1-krzk@kernel.orgSigned-off-by: Olof Johansson <olof@lixom.net>

Merge tag 'renesas-drivers-for-v5.10-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel into arm/drivers

Renesas driver updates for v5.10

  - Improve visual Kconfig structure.

* tag 'renesas-drivers-for-v5.10-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel:
  soc: renesas: Align driver description titles
  soc: renesas: Use menu for Renesas SoC

Link: https://lore.kernel.org/r/20200904114819.30254-4-geert+renesas@glider.beSigned-off-by: Olof Johansson <olof@lixom.net>

Merge tag 'optee-i2c-fix-for-v5.10' of git://git.linaro.org:/people/jens.wiklander/linux-tee into arm/drivers

Make sure I2C functions used in OP-TEE are reachable with IS_REACHABLE()

* tag 'optee-i2c-fix-for-v5.10' of git://git.linaro.org:/people/jens.wiklander/linux-tee:
  drivers: optee: fix i2c build issue

Link: https://lore.kernel.org/r/20200901101806.GA3286324@jadeSigned-off-by: Olof Johansson <olof@lixom.net>

Renesas R-Car V3U DT Binding Definitions

Clock and Power Domain definitions for the Renesas R-Car V3U (R8A779A0)
SoC, shared by driver and DT source files.

Add support for R-Car V3U (R8A779A0) to the R-Car RST driver.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/1599470390-29719-12-git-send-email-yoshihiro.shimoda.uh@renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

Add support for identifying the R-Car V3U (R8A779A0) SoC.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/1599470390-29719-10-git-send-email-yoshihiro.shimoda.uh@renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

This patch sorts each driver by description title in alphabetical order.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87a6y2v54o.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

For easy understanding of architecture and alphabetical merging, this
patch uses ARM32/ARM64 for description.
This prepares for sorting the menu.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87bliiv54u.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

Add all Clock Pulse Generator Core Clock Outputs for the Renesas R-Car
V3U (R8A779A0) SoC.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/1599657211-17504-2-git-send-email-yoshihiro.shimoda.uh@renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

Add power domain indices for R-Car V3U (r8a779a0).
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/1599470390-29719-5-git-send-email-yoshihiro.shimoda.uh@renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

scmi_mailbox is obtained from cinfo->transport_info and the first
call to mailbox_chan_free frees the channel and sets cinfo->transport_info
to NULL. Care is taken to check for non NULL smbox->chan but smbox can
itself be NULL. Fix it by checking for it without which, kernel crashes
with below NULL pointer dereference and eventually kernel panic.

   Unable to handle kernel NULL pointer dereference at
   		virtual address 0000000000000038
   Modules linked in: scmi_module(-)
   Hardware name: ARM LTD ARM Juno Development Platform/ARM Juno
   		Development Platform, BIOS EDK II Sep  2 2020
   pstate: 80000005 (Nzcv daif -PAN -UAO BTYPE=--)
   pc : mailbox_chan_free+0x2c/0x70 [scmi_module]
   lr : idr_for_each+0x6c/0xf8
   Call trace:
    mailbox_chan_free+0x2c/0x70 [scmi_module]
    idr_for_each+0x6c/0xf8
    scmi_remove+0xa8/0xf0 [scmi_module]
    platform_drv_remove+0x34/0x58
    device_release_driver_internal+0x118/0x1f0
    driver_detach+0x58/0xe8
    bus_remove_driver+0x64/0xe0
    driver_unregister+0x38/0x68
    platform_driver_unregister+0x1c/0x28
    scmi_driver_exit+0x38/0x44 [scmi_module]
   ---[ end trace 17bde19f50436de9 ]---
   Kernel panic - not syncing: Fatal exception
   SMP: stopping secondary CPUs
   Kernel Offset: 0x1d0000 from 0xffff800010000000
   PHYS_OFFSET: 0x80000000
   CPU features: 0x0240022,25806004
   Memory Limit: none
   ---[ end Kernel panic - not syncing: Fatal exception ]---

Link: https://lore.kernel.org/r/20200908112611.31515-1-sudeep.holla@arm.com
Fixes: 5c8a47a5 ("firmware: arm_scmi: Make scmi core independent of the transport type")
Cc: Cristian Marussi <cristian.marussi@arm.com>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Tested-by: Cristian Marussi <cristian.marussi@arm.com>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

Add SCMI device for system power protocol by just adding the name "syspower"
to the list of supported core protocol devices.

Link: https://lore.kernel.org/r/20200907174657.32466-3-cristian.marussi@arm.comSigned-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

Add bare protocol support for SCMI system power protocol as needed by
an OSPM agent: basic initialization and SYSTEM_POWER_STATE_NOTIFIER
core notification support.

No event-handling logic is attached to such notification..

Link: https://lore.kernel.org/r/20200907174657.32466-2-cristian.marussi@arm.comSigned-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

These are never modified, so make them const to allow the compiler to
put them in read-only memory.

Link: https://lore.kernel.org/r/20200906230452.33410-4-rikard.falkeborn@gmail.comSigned-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

These are never modified, so make them const to allow drivers to make
them const.

Link: https://lore.kernel.org/r/20200906230452.33410-3-rikard.falkeborn@gmail.comSigned-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

The perf_ops are not modified through this pointer. Make them const to
indicate that. This is in preparation to make the scmi-ops pointers in
scmi_handle const.

Link: https://lore.kernel.org/r/20200906230452.33410-2-rikard.falkeborn@gmail.comAcked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

GISB breakpoint interrupts can be raised when a breakpoint has been
enabled to match a specific master and/or GISB register address. Being
able to print a message, similar to those done during target abort or
timeout greatly helps debug systems.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

The GISB arbiter can have a third and optional interrupt to handle GISB
breakpoints.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

Change the RACPREFDATA(x) setting to prefetch the next 256-byte line
after 4 consecutive lines have been used, instead of after 2 consecutive
lines. This does improve the synthetic memcpy benchmark by an additional
+0.5% on top of the previous change for Cortex-A72 CPUs.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

Change the RAC prefetch distance from +/- 1 to +/- 2 for Cortex-A72 CPUs
since this provides an average of a 3.8% performance increase for
synthetic memcpy benchmarks.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

72165 uses a Brahma-B53 CPU and its Bus Interface Unit, tune it
according to the existing values we have.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

72164 uses a Brahma-B53 CPU and its Bus Interface Unit, tune it
according to the existing values we have.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>