u-boot.git/include/scmi_protocols.h, 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

scmi: update comments for scmi_pinctrl_config_set_in()

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

Delete some extra space characters to make checkpatch.pl happy:

WARNING: please, no space before tabs

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

scmi: pinctrl: add pinctrl message IDs

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

Add all the pinctrl message IDs.  I renamed SCMI_MSG_PINCTRL_CONFIG_SET
to SCMI_PINCTRL_SETTINGS_CONFIGURE so the naming matches the spec better.

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

imx9: scmi: Get DDR size through SM SCMI API

2026-03-16T21:44:00+00:00

System Manager(SM) has implemented the MISC protocol to retrieve DDR
information. Using this API, U-Boot can obtain the DDR size dynamically
instead of relying on static configuration macros.

This change addresses the DDR ECC enabled case, where 1/8 of the total
DDR size is reserved for ECC data. The scmi_misc_ddrinfo() returns the
DDR size with EEC overhead already deducted.

Implementation details:
- Query the DDR size via scmi_misc_ddrinfo()
- Replace direct REG_DDR_CS[0,1]_BNDS register reads with SCMI call
- Switch from PHYS_SDRAM[x]_SIZE macros to runtime detection
- For backward compatibility with older SM firmware, fall back to
  static PHYS_SDRAM[x]_SIZE configuration if the SCMI call fails

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

firmware: scmi: Add clock v3.2 CONFIG_SET support

2025-11-10T12:57:42+00:00

SCMI v3.2 introduces a new clock CONFIG_SET message format that can
optionally carry also OEM specific configuration values beside the usual
clock enable/disable requests. Add support to use such new format when
talking to a v3.2 compliant SCMI platform.

Support existing enable/disable operations across different clock protocol
versions: this patch still does not add protocol operations to support the
new OEM specific optional configuration capabilities.

No functional change for the SCMI drivers users of the related enable and
disable clock operations.

[Marek: Remodel after Linux e49e314a2cf7 ("firmware: arm_scmi: Add clock v3.2 CONFIG_SET support")
        Support both old < 2.1 and new >= 2.1 protocol versions.
	Update commit message based on Linux one]

Signed-off-by: Vinh Nguyen 
Signed-off-by: Marek Vasut 
Reviewed-by: Alice Guo 
Signed-off-by: Peng Fan

firmware: scmi: Fix up code comments

2025-11-10T12:57:40+00:00

Fix multiple instances of copy-paste errors. Fill in missing
headers for CLOCK_GET_PERMISSIONS message and response.

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

firmware: scmi: Support probe vendor ID 0x80 and 0x82

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

Preparing to add i.MX LMM and CPU protocol driver, support probe SCMI
vendor ID 0x80(i.MX SCMI LMM ID) and 0x82(i.MX SCMI CPU ID). And use
Kconfig option to support conditional compilation.

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

firmware: scmi: Cleanup the SCMI MISC ID

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

SCMI_IMX_PROTOCOL_ID_MISC was never used, so drop it. And move
SCMI_PROTOCOL_ID_IMX_MISC out of enum scmi_std_protocol to
scmi_nxp_protocols.h, because it is i.MX specific and following Linux
Kernel style, use macro definition.

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

firmware: scmi: Add error code IN_USE

2025-10-09T20:16:11+00:00

In SCMI spec 3.2, there is an update:
Add IN_USE error code for usage with Pin control protocol

So add the error decoding for IN_USE.

Signed-off-by: Peng Fan

clk: scmi: add compatibility with clock protocol 2.0

2025-06-11T07:42:55+00:00

Since clock protocol 2.0, SCMI specification add an option field
"clock_enable_delay" to CLOCK_ATTRIBUTES command.

scmi_read_resp_from_smt() will return an error ("Buffer too small") as
the message length coming from the SCMI server is not the same as expected.

So implement a condition to SCMI clock protocol version to change the
length of the expected message.

Signed-off-by: Valentin Caron 
Signed-off-by: Patrice Chotard 
Cc: Lukasz Majewski 
Cc: Sean Anderson 
Reviewed-by: Patrick Delaunay 
Reviewed-by: Patrice Chotard