Merge tag 'renesas-drivers-for-v4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/drivers

Renesas ARM Based SoC Drivers Updates for v4.20

* Convert to SPDX identifiers
* R-Car V3M (r8a77970) and V3H (r8a77980): Document Timer Unit (TMU) bindings
* RZ/G1N (r8a7744) and RZ/G1C (r8a77470) SoCs:
  - Document APMU and SMP enable method
* RZ/G2M (r8a74a1), RZ/G1N (r8a7744) and RZ/G2E (r8a774c0) SoCs:
  - Add reset support
  - Add sysc support
* RZ/G2M (r8a774a1), RZ/G2E (r8a774c0) and RZ/A2M (r7s9210) SoCs:
  - Add support for identifying SoC
* RZ/A2M (r7s9210) SoC:
  - Add basic SoC setup support

* tag 'renesas-drivers-for-v4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas: (21 commits)
  dt-bindings: apmu: Document r8a7744 support
  dt-bindings: timer: renesas: tmu: document R8A779{7|8}0 bindings
  dt-bindings: apmu: Document r8a77470 support
  soc: renesas: rcar-rst: Add support for RZ/G1N
  dt-bindings: reset: rcar-rst: Document r8a7744 reset module
  soc: renesas: rcar-sysc: Add r8a7744 support
  dt-bindings: power: rcar-sysc: Add r8a7744 power domain index macros
  dt-bindings: power: rcar-sysc: Document r8a7744 SYSC binding
  soc: renesas: rcar-rst: Add support for RZ/G2E
  dt-bindings: reset: rcar-rst: Document r8a774c0 rst
  soc: renesas: rcar-sysc: Add r8a774c0 support
  dt-bindings: power: rcar-sysc: Document r8a774c0 sysc
  dt-bindings: power: Add r8a774c0 SYSC power domain definitions
  soc: renesas: Identify RZ/G2E
  soc: renesas: convert to SPDX identifiers
  soc: renesas: rcar-rst: Add support for RZ/G2M
  soc: renesas: rcar-sysc: Add r8a774a1 support
  dt-bindings: power: Add r8a774a1 SYSC power domain definitions
  soc: renesas: identify RZ/A2
  ARM: shmobile: Add basic RZ/A2 SoC support
  ...
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Merge tag 'tegra-for-4.20-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/drivers

soc/tegra: Changes for v4.20-rc1

This contains a pinctrl implementation for the pad configuration that
can be controlled from the PMC.

* tag 'tegra-for-4.20-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  soc/tegra: pmc: Implement pad configuration via pinctrl
  soc/tegra: pmc: Remove public pad voltage APIs
  soc/tegra: pmc: Use X macro to generate IO pad tables
  soc/tegra: pmc: Implement tegra_io_pad_is_powered()
  soc/tegra: pmc: Factor out DPD register bit calculation
  soc/tegra: pmc: Fix pad voltage configuration for Tegra186
  soc/tegra: pmc: Fix child-node lookup
  dt-bindings: Add Tegra PMC pad configuration bindings
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arm64: zynqmp: SoC changes for v4.20

- Adding firmware API for SoC with debugfs interface
  Firmware driver communicates to Platform Management Unit (PMU) by using
  SMC instructions routed to Arm Trusted Firmware (ATF). Initial version
  adds support for base firmware driver with query and clock APIs.

  EEMI spec is available here:
  https://www.xilinx.com/support/documentation/user_guides/ug1200-eemi-api.pdf

* tag 'zynqmp-soc-for-v4.20-v2' of https://github.com/Xilinx/linux-xlnx:
  firmware: xilinx: Add debugfs for query data API
  firmware: xilinx: Add debugfs interface
  firmware: xilinx: Add clock APIs
  firmware: xilinx: Add query data API
  firmware: xilinx: Add Zynqmp firmware driver
  dt-bindings: firmware: Add bindings for ZynqMP firmware
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Add debugfs file to query platform specific data from firmware
using debugfs interface.
Signed-off-by: Rajan Vaja <rajanv@xilinx.com>
Signed-off-by: Jolly Shah <jollys@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

Firmware-debug provides debugfs interface to all APIs.
Debugfs can be used to call firmware APIs with required
parameters.

Usage:
* Calling firmware API through debugfs:
  # echo "<api-name> <arg1> .. <argn>" > /sys/.../zynqmp-firmware/pm

* Read output of last called firmware API:
  # cat /sys/.../zynqmp-firmware/pm

Refer ug1200 for more information on these APIs:
  * https://www.xilinx.com/support/documentation/user_guides/ug1200-eemi-api.pdf

Add basic debugfs file to get API version.
Signed-off-by: Rajan Vaja <rajanv@xilinx.com>
Signed-off-by: Jolly Shah <jollys@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

Add clock APIs to control clocks through firmware
interface.
Signed-off-by: Rajan Vaja <rajanv@xilinx.com>
Signed-off-by: Jolly Shah <jollys@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

Add ZynqMP firmware query data API to query platform
specific information(clocks, pins) from firmware.
Signed-off-by: Rajan Vaja <rajanv@xilinx.com>
Signed-off-by: Jolly Shah <jollys@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

This patch is adding communication layer with firmware.
Firmware driver provides an interface to firmware APIs.
Interface APIs can be used by any driver to communicate to
PMUFW(Platform Management Unit). All requests go through ATF.
Signed-off-by: Rajan Vaja <rajanv@xilinx.com>
Signed-off-by: Jolly Shah <jollys@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

Add documentation to describe Xilinx ZynqMP firmware driver
bindings. Firmware driver provides an interface to firmware
APIs. Interface APIs can be used by any driver to communicate
to PMUFW (Platform Management Unit).
Signed-off-by: Rajan Vaja <rajanv@xilinx.com>
Signed-off-by: Jolly Shah <jollys@xilinx.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

Merge tag 'at91-4.20-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/at91/linux into next/drivers

AT91 drivers for 4.20

 - use struct_size in atmel-ebi

* tag 'at91-4.20-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/at91/linux:
  memory: atmel-ebi: Use struct_size() in devm_kzalloc()
Signed-off-by: Olof Johansson <olof@lixom.net>

Merge tag 'soc-fsl-next-v4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/leo/linux into next/drivers

NXP/FSL SoC driver updates for v4.20

- Use of_get_child_by_name helper for QE driver
- Remove redundant pointer 'priv' for dpio driver

* tag 'soc-fsl-next-v4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/leo/linux:
  soc: fsl: dpio: remove redundant pointer 'priv'
  soc: fsl/qe: Use of_get_child_by_name helper
Signed-off-by: Olof Johansson <olof@lixom.net>

Merge tag 'drivers_soc_for_4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone into next/drivers

soc: driver soc update for v4.20

  - Enable host-id as an optional dt property
  - Fix minor typo in knav driver

* tag 'drivers_soc_for_4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone:
  soc: ti: fix spelling mistake "instace" -> "instance"
  firmware: ti_sci: Provide host-id as an optional dt parameter
  Documentation: dt: keystone: ti-sci: Add optional host-id parameter
Signed-off-by: Olof Johansson <olof@lixom.net>

Merge tag 'scmi-updates-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into next/drivers

SCMI updates for v4.20

1. Addition of interface to fetch estimated power from the firmware
   corresponding to each OPP of a device

2. Cleanup using strlcpy to ensure NULL-terminated strings for name
   strings instead of relying on the firmware to do the same

* tag 'scmi-updates-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  firmware: arm_scmi: add a getter for power of performance states
  firmware: arm_scmi: use strlcpy to ensure NULL-terminated strings
Signed-off-by: Olof Johansson <olof@lixom.net>

Linux 4.19-rc3

Merge tag 'amlogic-drivers' of https://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic into next/drivers

Amlogic ARM64 driver updates for v4.20
- add meson-canvas driver and bindings
- firmware: Add serial number sysfs entry

* tag 'amlogic-drivers' of https://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic:
  soc: amlogic: add meson-canvas driver
  dt-bindings: soc: amlogic: add meson-canvas documentation
  firmware: meson_sm: Add serial number sysfs entry
Signed-off-by: Olof Johansson <olof@lixom.net>

Trivial fix to spelling mistake in dev_err messages and comments
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>

Document APMU and SMP enable method for RZ/G1N (R8A7744) SoC.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

Document the R-Car V3{M|H} (R8A779{7|8}0) SoC in the Renesas TMU bindings;
the TMU hardware in those is the Renesas standard 3-channel timer unit.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

Document APMU and SMP enable method for RZ/G1C (also known as
r8a77470) SoC.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

Document bindings for the RZ/G1N (R8A7744) reset module.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

Add support for RZ/G1N (R8A7744) SoC power areas to the R-Car SYSC driver.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

Add power domain indices for RZ/G1N (R8A7744) SoC.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

Add binding documentation for the RZ/G1N (R8A7744) SYSC block.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

Document bindings for the RZ/G2E (a.k.a. R8A774C0) reset
module.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

Add support for the RZ/G2E (R8A774C0) SoC power areas to the
R-Car SYSC driver.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

Document bindings for the RZ/G2E (a.k.a. R8A774C0) system
controller.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

This patch adds power domain indices for RZ/G2E.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

Amlogic SoCs have a repository of 256 canvas which they use to
describe pixel buffers.

They contain metadata like width, height, block mode, endianness [..]

Many IPs within those SoCs like vdec/vpu rely on those canvas to read/write
pixels.
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Tested-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

DT bindings doc for amlogic,meson-canvas
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

The Amlogic Meson SoC Secure Monitor implements a call to retrieve an unique
SoC ID starting from the GX Family and all new families.

The serial number is simply exposed as a sysfs entry under the firmware
sysfs directory.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

Add support for identifying the RZ/G2E (r8a774c0) SoC.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

This patch updates license to use SPDX-License-Identifier
instead of verbose license text.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Chris Paterson <chris.paterson2@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

Add support for RZ/G2M (R8A774A1) SoC power areas to the R-Car SYSC
driver.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Chris Paterson <chris.paterson2@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

This patch adds power domain indices for RZ/G2M.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Chris Paterson <chris.paterson2@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

The SCMI protocol can be used to get power estimates from firmware
corresponding to each performance state of a device. Although these power
costs are already managed by the SCMI firmware driver, they are not
exposed to any external subsystem yet.

Fix this by adding a new get_power() interface to the exisiting perf_ops
defined for the SCMI protocol.
Signed-off-by: Quentin Perret <quentin.perret@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

Replace all the memcpy() for copying name strings from the firmware with
strlcpy() to make sure we are bounded by the source buffer size and we
also always have NULL-terminated strings.

This is needed to avoid out of bounds accesses if the firmware returns
a non-terminated string.
Reported-by: Olof Johansson <olof@lixom.net>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>