Arm SCMI updates for v6.12
Few main features include:
1. SCMI transport as stand-alone drivers
Currently the SCMI transport layer is being built embedded into in
the core SCMI stack. Some of these transports, despite being currently
part of the main SCMI module, are indeed also registered with different
subsystems like optee or virtio, and actively probed also by those.
This leads to a few awkward and convoluted tricks to properly handle
such interactions at boot time in the SCMI stack.
This change adds the new logic to the core SCMI stack so that each
existing transport is transitioned to be a standi-alone driver. With
that all the probe deferral and awkward retries between the SCMI
core stack and the transports has been removed, since no more needed.
2. Support for obtaining transport descriptors from the devicetree
SCMI platform firmwares might have different designs depending on
the platform. Some of the transport descriptors rely on such design.
E.g. the maximum receive channel timeout value might vary depending
on the specific underlying hardware and firmware design choices.
This change adds support for max-rx-timeout-ms property to describe
the transport needs of a specific platform design. It will be extended
in the future to obtain other such hardware/firmware dependent
transport related descriptors.
3. NXP i.MX95 specific SCMI vendor protocol extensions
SCMI specification allows vendor or platform-specific extensions to
the interface. NXP i.MX95 System Manager(SM) that implements SCMI
extends the interface to implement couple of vendor/platform specific
protocol, namely:
a. Battery Backed Module(BBM) Protocol
This protocol is intended provide access to the battery-backed
module. This contains persistent storage (GPR), an RTC, and the
ON/OFF button. The protocol can also provide access to similar
functions implemented via external board components.
b. MISC Protocol for misc settings
This includes controls that are misc settings/actions that must
be exposed from the SM to agents. They are device specific and
are usually define to access bit fields in various mix block
control modules, IOMUX_GPR, and other GPR/CSR owned by the SM.
4. SCMI debug/tracking metrics
Since SCMI involves interaction with the entity(software, firmware
and/or hardware) providing services or features, it is quite useful
to track certain metrics(for pure debugging purposes) like how many
messages were sent or received, were there any failures, what kind
of failures, ..etc. This feature adds support for the same via debugfs.
Apart from these main features, there are some miscellaneous updates, fixes
and cleanups.
* tag 'scmi-updates-6.12' of https://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux: (31 commits)
rtc: support i.MX95 BBM RTC
input: keyboard: support i.MX95 BBM module
firmware: imx: Add i.MX95 MISC driver
firmware: arm_scmi: Add initial support for i.MX MISC protocol
firmware: arm_scmi: Add initial support for i.MX BBM protocol
firmware: arm_scmi: Add NXP i.MX95 SCMI documentation
dt-bindings: firmware: Add i.MX95 SCMI Extension protocol
firmware: arm_scmi: Replace comma with the semicolon
firmware: arm_scmi: Replace the use of of_node_put() to __free(device_node)
firmware: arm_scmi: Fix trivial whitespace/coding style issues
firmware: arm_scmi: Use max-rx-timeout-ms from devicetree
dt-bindings: firmware: arm,scmi: Introduce property max-rx-timeout-ms
firmware: arm_scmi: Remove const from transport descriptors
firmware: arm_scmi: Simplify with scoped for each OF child loop
firmware: arm_scmi: Update various protocols versions
firmware: arm_scmi: Remove legacy transport-layer code
firmware: arm_scmi: Make VirtIO transport a standalone driver
firmware: arm_scmi: Make OPTEE transport a standalone driver
firmware: arm_scmi: Make SMC transport a standalone driver
firmware: arm_scmi: Make MBOX transport a standalone driver
...
Link: https://lore.kernel.org/r/20240830135918.2383664-1-sudeep.holla@arm.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Arm FF-A updates for v6.12
The main addition this time is the basic support for FF-A v1.2
specification which includes support for newly added:
1. FFA_MSG_SEND_DIRECT_{REQ,RESP}2
2. FFA_PARTITION_INFO_GET_REGS
3. FFA_YIELD support in direct messaging
Apart from these, the changes include support to fetch the Rx/Tx buffer
size using FFA_FEATURES, addition of the FF-A FIDs for v1.2 and some
coding style cleanups.
* tag 'ffa-updates-6.12' of https://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
firmware: arm_ffa: Fetch the Rx/Tx buffer size using ffa_features()
firmware: arm_ffa: Add support for FFA_YIELD in direct messaging
firmware: arm_ffa: Add support for FFA_MSG_SEND_DIRECT_{REQ,RESP}2
firmware: arm_ffa: Add support for FFA_PARTITION_INFO_GET_REGS
firmware: arm_ffa: Move the function ffa_features() earlier
firmware: arm_ffa: Update the FF-A command list with v1.2 additions
firmware: arm_ffa: Some coding style fixes
Link: https://lore.kernel.org/r/20240830135759.2383431-1-sudeep.holla@arm.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
rk3308 io-domains, and some default settings for bits in the general
register files for rk3128 and the new rk3576 soc.
* tag 'v6.12-rockchip-drivers-1' of https://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
soc: rockchip: grf: Add rk3576 default GRF values
dt-bindings: soc: rockchip: Add rk3576 syscon compatibles
soc: rockchip: grf: Set RK3128's vpu main clock
soc: rockchip: io-domain: Add RK3308 IO voltage domains
dt-bindings: power: rockchip: Document RK3308 IO voltage domains
Link: https://lore.kernel.org/r/23316481.ssLaC8jLEa@diego
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Memory controller drivers for v6.12
1. Tegra210 EMC: Driver refactoring and rework.
2. Tegra186 EMC: Drop unused function.
3. FSL WEIM: Correct fsl,weim-cs-timing property to properly validate it
as an array.
4. TI AEMIF: Drop platform data support.
5. TI EMIF: Switch to of_property_read_bool().
6. Several cleanups in multiple drivers: TI AEMIF and EMIF, Tegra
EMC/MC, Atmel EBI, Samsung Exynos5422 DMC, STM32 FMC2 EBI, OMAP GPMC,
PL172 and PL1353 SMC. These are mostly code simplifying around
probe() like using
- devm_clk_get_enabled(),
- dev_err_probe(),
- scoped device node handling (cleanup.h),
- scoped for each OF child loops,
- scoped/guard locks.
* tag 'memory-controller-drv-6.12' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl: (35 commits)
memory: mtk-smi: Use devm_clk_get_enabled()
memory: pl353-smc: simplify with devm_clk_get_enabled()
memory: pl353-smc: simplify with dev_err_probe()
memory: pl172: simplify with devm_clk_get_enabled()
memory: pl172: simplify with dev_err_probe()
memory: omap-gpmc: simplify locking with guard()
memory: emif: simplify locking with guard()
memory: emif: drop unused 'irq_state' member
memory: ti-aemif: Revert "memory: ti-aemif: don't needlessly iterate over child nodes"
memory: ti-aemif: simplify with scoped for each OF child loop
memory: ti-aemif: simplify with dev_err_probe()
memory: tegra30-emc: simplify with scoped for each OF child loop
memory: tegra20-emc: simplify with scoped for each OF child loop
memory: tegra124-emc: simplify with scoped for each OF child loop
memory: tegra-mc: simplify with scoped for each OF child loop
memory: stm32-fmc2-ebi: simplify with dev_err_probe()
memory: stm32-fmc2-ebi: simplify with scoped for each OF child loop
memory: samsung: exynos5422-dmc: use scoped device node handling to simplify error paths
memory: samsung: exynos5422-dmc: simplify dmc->dev usage
memory: atmel-ebi: simplify with scoped for each OF child loop
...
Link: https://lore.kernel.org/r/20240827122926.30794-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
In order to create attribute files in /sys/firmware/turris-mox-rwtm,
this driver creates it's own kobject type.
Simplify this by dropping this own kobject creation, and instead
creating standard device attribute files.
For backwards compatibility with sysfs ABI, create a symlink
/sys/firmware/turris-mox-rwtm, pointing to this device's sysfs
directory.
Signed-off-by: Marek Behún <kabel@kernel.org>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Link: https://lore.kernel.org/r/20240831092050.23093-8-kabel@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
The 4096 bytes limit in mox_hwrng_read() is due to the DMA buffer being
allocated to one PAGE_SIZE bytes. Use new local macro constant
RWTM_DMA_BUFFER_SIZE at allocation time and when used in mox_hwrng_read().
Use SZ_4K instead of PAGE_SIZE. Although PAGE_SIZE is never set to a
larger value on Armada 3720, it theoretically could, and this would be a
waste of space.
Signed-off-by: Marek Behún <kabel@kernel.org>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Link: https://lore.kernel.org/r/20240831092050.23093-2-kabel@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Enable compile testing for broader build coverage. None of the drivers
use anything from "asm", so code should build everywhere.
CONFIG_PLAT_VERSATILE is being selected by driver dependencies
(CONFIG_ARCH_INTEGRATOR and CONFIG_ARCH_REALVIEW), so directory can be
always added to Makefile targets without impacting other configurations.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/20240825-soc-dev-fixes-v1-4-ff4b35abed83@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use scoped for_each_child_of_node_scoped() when iterating over device
nodes to make code a bit simpler.
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
The BBM module provides BUTTON feature. To i.MX95, this module
is managed by System Manager and exported using System Management
Control Interface(SCMI). Linux could use i.MX SCMI BBM Extension
protocol to use BUTTON feature.
This driver is to use SCMI interface to enable pwrkey.
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Message-Id: <20240823-imx95-bbm-misc-v2-v8-7-e600ed9e9271@nxp.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
i.MX95 System Manager(SM) firmware includes a SCMI vendor protocol, SCMI
MISC protocol which includes controls that are misc settings/actions that
must be exposed from the SM to agents. They are device specific and are
usually define to access bit fields in various mix block control modules,
IOMUX_GPR, and other General Purpose registers, Control Status Registers
owned by the SM.
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Message-Id: <20240823-imx95-bbm-misc-v2-v8-3-e600ed9e9271@nxp.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
i.MX95 has a battery-backed module(BBM), which has persistent storage
(GPR), an RTC, and the ON/OFF button. The System Manager(SM) firmware
use SCMI vendor protocol(SCMI BBM) to let agent be able to use GPR, RTC
and ON/OFF button.
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Message-Id: <20240823-imx95-bbm-misc-v2-v8-2-e600ed9e9271@nxp.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Add i.MX SCMI Extension protocols bindings for:
- Battery Backed Module(BBM) Protocol
This contains persistent storage (GPR), an RTC, and the ON/OFF button.
The protocol can also provide access to similar functions implemented via
external board components.
- MISC Protocol.
This includes controls that are misc settings/actions that must be
exposed from the SM to agents. They are device specific and are usually
define to access bit fields in various mix block control modules,
IOMUX_GPR, and other GPR/CSR owned by the SM.
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Message-Id: <20240823-imx95-bbm-misc-v2-v8-1-e600ed9e9271@nxp.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Use __free for device_node values, and thus drop calls to of_node_put.
The goal is simplify of_node reference cleanup by using this scope-based
of_node_put() cleanup to simplify function exit handling. When using __free
a resource is allocated within a block, it is automatically freed at the
end of the block.
This cleanup aligns well with the recent change in shmem.c to use __free
instead of explicit of_node_put() calls.
Message-Id: <20240827143838.1465913-3-sudeep.holla@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
This reverts commit 23a641d5c2.
The first-level children of the aemif node are not the device nodes (ones
containing the 'compatible' property) but the chip-select nodes which
instead have their own children.
of_platform_populate() will skip such nodes so we must indeed iterate
over the direct children of the aemif node. The problem here is that we
never call of_platform_depopulate() as it takes the root device as
argument. We only have an unpopulated chip-select nodes so we will leak
these devices if any of the calls to of_platform_populate() fails.
I don't have a batter idea right now but my patch was not correct so we
need to revert it. While at it: at least use the scoped variant of the
OF node iterator. Down the line, we should find a better solution to fix
this potential resource leak in error path.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Link: https://lore.kernel.org/r/20240824080235.56472-1-brgl@bgdev.pl
Fixes: 23a641d5c2 ("memory: ti-aemif: don't needlessly iterate over child nodes")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
