u-boot.git/drivers/firmware/scmi/Makefile, branch master

scmi: pinctrl: add pinctrl driver for SCMI

2026-03-23T02:58:20+00:00

This driver adds the base support of pinctrl over SCMI.  The driver
does two main things.  First, it allows you to configure the initial
pin states.  Secondly, it's used a base to build a GPIO driver on
top of it.

To configure the states then add a pinmux config to the scmi_pinctrl
section:

        scmi_pinctrl: protocol@19 {
                reg = <0x19>;
                pinmux1: pinmux_test {
                        pinmux = <0 1 0xFFFFFFFF 18 1
                                  0 2 0xFFFFFFFF 18 1
                                  0 3 0xFFFFFFFF 18 1>;
                        function = "f_gpio1";
                        groups = "grp_1", "grp_3";
                };
        };

Under linux the pinctrl subsystem will parse the function and group
properties and use that to handle muxing.  However, under u-boot the
pin muxing is done using the "pinmux" property, which feeds raw SCMI
pinctrl PINCTRL_SETTINGS_CONFIGURE commands to the server.  The
numbers are: selector, identifier, function_id, config_type, and
config_value.  In the example above, it sets pins 1, 2, and 3 to 1.
The linux-kernel ignores this pinmux property.

Signed-off-by: Dan Carpenter 
Reviewed-by: Peng Fan 
Signed-off-by: Peng Fan

firmware: scmi: Add i.MX95 SCMI LMM protocol driver

2025-10-24T19:47:50+00:00

Add Logical Machine Management(LMM) protocol which is intended for boot,
shutdown, and reset of other logical machines (LM). It is usually used to
allow one LM to manager another used as an offload or accelerator engine.

Following Linux Kernel, created a separate folder for holding vendor
protocol drivers.

Signed-off-by: Peng Fan 
Reviewed-by: Alice Guo

firmware: scmi: add power domain protocol support

2023-10-24T21:05:24+00:00

In this patch, added are helper functions to directly manipulate
SCMI power domain management protocol. DM compliant power domain
driver will be implemented on top of those interfaces in a succeeding
patch.

Signed-off-by: AKASHI Takahiro

firmware: scmi: implement SCMI base protocol

2023-10-13T20:59:23+00:00

SCMI base protocol is mandatory according to the SCMI specification.

With this patch, SCMI base protocol can be accessed via SCMI transport
layers. All the commands, except SCMI_BASE_NOTIFY_ERRORS, are supported.
This is because U-Boot doesn't support interrupts and the current transport
layers are not able to handle asynchronous messages properly.

Signed-off-by: AKASHI Takahiro 
Reviewed-by: Simon Glass 
Reviewed-by: Etienne Carriere

firmware: scmi: Add OP-TEE transport

2021-11-23T18:54:43+00:00

This change implements an SCMI transport for agent interfacing the
OP-TEE SCMI service. OP-TEE provides an SCMI PTA (Pseudo-TA) for
non-secure world to send SCMI messages over an identified channel.
The driver implemented here uses a SMT shared memory for passing
messages between client and server.

The implementation opens and releases channel resources for each
passed SCMI message so that resources allocated (sessions) or
registered (shared memory areas) in OP-TEE firmware are released for
example before relocation as the driver will likely allocate/register
them back when probed after relocation.

The integration of the driver using dedicated config switch
CONFIG_SCMI_AGENT_OPTEE is designed on the model posted to the
U-Boot ML by Patrick Delaunay [1].

Link: [1] https://lore.kernel.org/all/20211028191222.v3.4.Ib2e58ee67f4d023823d8b5404332dc4d7e847277@changeid/
Cc: Patrick Delaunay 
Cc: Wolfgang Denk 
Signed-off-by: Etienne Carriere 
Reviewed-by: Patrick Delaunay

firmware: scmi: add configs to select the supported agents

2021-11-23T18:53:03+00:00

Add two configs CONFIG_SCMI_AGENT_MAILBOX and CONFIG_SCMI_AGENT_SMCCC
to select the supported agents as all the agents are not supported.

Signed-off-by: Patrick Delaunay 
Acked-by: Etienne Carriere

WS cleanup: remove SPACE(s) followed by TAB

2021-09-30T13:08:16+00:00

Signed-off-by: Wolfgang Denk

firmware: scmi: sandbox test for SCMI clocks

2020-09-30T15:55:23+00:00

Add tests for SCMI clocks. A test device driver sandbox-scmi_devices.c
is used to get clock resources, allowing further clock manipulation.

Change sandbox-smci_agent to emulate 3 clocks exposed through 2 agents.
Add DM test scmi_clocks to test these 3 clocks.
Update DM test sandbox_scmi_agent with load/remove test sequences
factorized by {load|remove}_sandbox_scmi_test_devices() helper functions.

Signed-off-by: Etienne Carriere 
Cc: Simon Glass 
Cc: Peng Fan 
Cc: Sudeep Holla 
Reviewed-by: Simon Glass

firmware: scmi: support Arm SMCCC transport

2020-09-30T15:55:23+00:00

This change implements a SMCCC transport for SCMI exchanges. This
implementation follows the Linux kernel as references implementation
for SCMI message processing, using the SMT format for communication
channel meta-data.

Use of SMCCC transport in SCMI FDT bindings are defined in the Linux
kernel DT bindings since v5.8. SMCCC with SMT is implemented in OP-TEE
from tag 3.9.0 [2].

Links: [2] https://github.com/OP-TEE/optee_os/commit/a58c4d706d23
Signed-off-by: Etienne Carriere 
Cc: Simon Glass 
Cc: Peng Fan 
Cc: Sudeep Holla 
Reviewed-by: Simon Glass

firmware: scmi: mailbox/smt agent device

2020-09-30T15:55:23+00:00

This change implements a mailbox transport using SMT format for SCMI
exchanges. This implementation follows the Linux kernel and
SCP-firmware [1] as references implementation for SCMI message
processing using SMT format for communication channel meta-data.

Use of mailboxes in SCMI FDT bindings are defined in the Linux kernel
DT bindings since v4.17.

Links: [1] https://github.com/ARM-software/SCP-firmware
Signed-off-by: Etienne Carriere 
Cc: Simon Glass 
Cc: Peng Fan 
Cc: Sudeep Holla 
Reviewed-by: Simon Glass