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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 <[email protected]>
Reviewed-by: Peng Fan <[email protected]>
Signed-off-by: Peng Fan <[email protected]>
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Delete some extra space characters to make checkpatch.pl happy:
WARNING: please, no space before tabs
Signed-off-by: Dan Carpenter <[email protected]>
Acked-by: Peng Fan <[email protected]>
Signed-off-by: Peng Fan <[email protected]>
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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 <[email protected]>
Reviewed-by: Peng Fan <[email protected]>
Reviewed-by: Linus Walleij <[email protected]>
Signed-off-by: Peng Fan <[email protected]>
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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 <[email protected]>
Signed-off-by: Alice Guo <[email protected]>
Reviewed-by: Peng Fan <[email protected]>
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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 <[email protected]>
Signed-off-by: Marek Vasut <[email protected]>
Reviewed-by: Alice Guo <[email protected]>
Signed-off-by: Peng Fan <[email protected]>
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Fix multiple instances of copy-paste errors. Fill in missing
headers for CLOCK_GET_PERMISSIONS message and response.
Signed-off-by: Marek Vasut <[email protected]>
Reviewed-by: Alice Guo <[email protected]>
Signed-off-by: Peng Fan <[email protected]>
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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 <[email protected]>
Reviewed-by: Alice Guo <[email protected]>
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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 <[email protected]>
Reviewed-by: Alice Guo <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
Signed-off-by: Patrice Chotard <[email protected]>
Cc: Lukasz Majewski <[email protected]>
Cc: Sean Anderson <[email protected]>
Reviewed-by: Patrick Delaunay <[email protected]>
Reviewed-by: Patrice Chotard <[email protected]>
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@protocols is an array of protocol identifiers that are implemented,
excluding the Base protocol. Four protocol identifiers are packed into
each array element. The number of elements of @protocols is specified by
callee-side.
Signed-off-by: Ye Li <[email protected]>
Signed-off-by: Alice Guo <[email protected]>
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Clock driver based on SCMI clock management protocol in Linux checks
clock state, parent and rate control permissions. To be consistent with
the kernel driver, add this check here. CLOCK_GET_PERMISSIONS is from
ARM System Control and Management Interface Platform Design Document 3.2.
When using common clock framework (CCF), use the clock signal ID to get
the clock registered by clk_register() in scmi_clk_probe(), and then
obatin the struct clk_scmi variable with container_of().
Signed-off-by: Alice Guo <[email protected]>
Signed-off-by: Ye Li <[email protected]>
Reviewed-by: Peng Fan <[email protected]>
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This patch adds the command CLOCK_PARENT_SET that can be used to set the
parent of a clock. ARM SCMI Version 3.2 supports to change the parent of
a clock device.
Signed-off-by: Peng Fan <[email protected]>
Signed-off-by: Alice Guo <[email protected]>
Reviewed-by: Ye Li <[email protected]>
Reviewed-by: Marek Vasut <[email protected]>
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SCMI Performance domain management protocol is intended for performance
management of groups of devices or APs that run in the same performance
domain. The functionality provided by the callee-side can be used by
passing the corresponding message_id.
Signed-off-by: Peng Fan <[email protected]>
Signed-off-by: Alice Guo <[email protected]>
Reviewed-by: Ye Li <[email protected]>
Reviewed-by: Marek Vasut <[email protected]>
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getting the ROM passover data
SCMI misc protocol is intended for miscellaneous functions which are
device specific and are usually defined to access bit fields. It is i.MX
specific. This patch adds SCMI misc protocol protocol_id and message_id
for getting the ROM passover data.
Signed-off-by: Peng Fan <[email protected]>
Signed-off-by: Alice Guo <[email protected]>
Reviewed-by: Ye Li <[email protected]>
Reviewed-by: Marek Vasut <[email protected]>
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This patch provides a pinctrl driver based on SCMI pin control protocol.
Currently, only the PINCTRL_CONFIG_SET command is implemented.
Signed-off-by: Ranjani Vaidyanathan <[email protected]>
Signed-off-by: Peng Fan <[email protected]>
Signed-off-by: Alice Guo <[email protected]>
Reviewed-by: Ye Li <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Reviewed-by: Etienne Carriere <[email protected]>
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Implements SCMI APIs to retrieve the number exposed SCMI clocks using
SCMI_PROTOCOL_ATTRIBUTES messages and the names of the clocks using
SCMI_CLOCK_ATTRIBUTES messages.
This change updates sandbox SCMI clock test driver to manage these
2 new message IDs.
Cc: Lukasz Majewski <[email protected]>
Cc: Sean Anderson <[email protected]>
Cc: Clement Leger <[email protected]>
Cc: Patrick Delaunay <[email protected]>
Reviewed-by: Patrick Delaunay <[email protected]>
Signed-off-by: Gabriel Fernandez <[email protected]>
Signed-off-by: Etienne Carriere <[email protected]>
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First two fields are reversed compared to what is expected by the SCMI
specification.
Signed-off-by: Clément Léger <[email protected]>
Fixes: 60388844836 ("clk: add clock driver for SCMI agents")
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Implement voltage regulators interfaced by the SCMI voltage domain
protocol. The DT bindings are defined in the Linux kernel since
SCMI voltage domain and regulators patches [1] and [2] integration
in v5.11-rc7.
Link: [1] https://github.com/torvalds/linux/commit/0f80fcec08e9c50b8d2992cf26495673765ebaba
Link: [2] https://github.com/torvalds/linux/commit/2add5cacff3531e54c50b0832128299faa9f0563
Signed-off-by: Etienne Carriere <[email protected]>
Reviewed-by: Jaehoon Chung <[email protected]>
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This change introduces a reset controller driver for SCMI agent devices.
When SCMI agent and SCMI reset domain drivers are enabled, SCMI agent
binds a reset controller device for each SCMI reset domain protocol
devices enabled in the FDT.
SCMI reset driver is embedded upon CONFIG_RESET_SCMI=y. If enabled,
CONFIG_SCMI_AGENT is also enabled.
SCMI Reset Domain protocol is defined in the SCMI specification [1].
Links: [1] https://developer.arm.com/architectures/system-architectures/software-standards/scmi
Signed-off-by: Etienne Carriere <[email protected]>
Cc: Simon Glass <[email protected]>
Cc: Peng Fan <[email protected]>
Cc: Sudeep Holla <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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This change introduces a clock driver for SCMI agent devices. When
SCMI agent and SCMI clock drivers are enabled, SCMI agent binds a
clock device for each SCMI clock protocol devices enabled in the FDT.
SCMI clock driver is embedded upon CONFIG_CLK_SCMI=y. If enabled,
CONFIG_SCMI_AGENT is also enabled.
SCMI Clock protocol is defined in the SCMI specification [1].
Links: [1] https://developer.arm.com/architectures/system-architectures/software-standards/scmi
Signed-off-by: Etienne Carriere <[email protected]>
Cc: Lukasz Majewski <[email protected]>
Cc: Simon Glass <[email protected]>
Cc: Peng Fan <[email protected]>
Cc: Sudeep Holla <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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This change introduces SCMI agent uclass to interact with a firmware
using the SCMI protocols [1].
SCMI agent uclass currently supports a single method to request
processing of the SCMI message by an identified server. A SCMI message
is made of a byte payload associated to a protocol ID and a message ID,
all defined by the SCMI specification [1]. On return from process_msg()
method, the caller gets the service response.
SCMI agent uclass defines a post bind generic sequence for all devices.
The sequence binds all the SCMI protocols listed in the FDT for that
SCMI agent device. Currently none, but later change will introduce
protocols.
This change implements a simple sandbox device for the SCMI agent uclass.
The sandbox nicely answers SCMI_NOT_SUPPORTED to SCMI messages.
To prepare for further test support, the sandbox exposes a architecture
function for test application to read the sandbox emulated devices state.
Currently supports 2 SCMI agents, identified by an ID in the FDT device
name. The simplistic DM test does nothing yet.
SCMI agent uclass is designed for platforms that embed a SCMI server in
a firmware hosted somewhere, for example in a companion co-processor or
in the secure world of the executing processor. SCMI protocols allow an
SCMI agent to discover and access external resources as clock, reset
controllers and more. SCMI agent and server communicate following the
SCMI specification [1]. This SCMI agent implementation complies with
the DT bindings defined in the Linux kernel source tree regarding
SCMI agent description since v5.8.
Links: [1] https://developer.arm.com/architectures/system-architectures/software-standards/scmi
Signed-off-by: Etienne Carriere <[email protected]>
Cc: Simon Glass <[email protected]>
Cc: Peng Fan <[email protected]>
Cc: Sudeep Holla <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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