[PATCH v4 1/8] firmware: add SCMI agent uclass

[Tom Rini]

On Wed, Sep 09, 2020 at 06:44:00PM +0200, Etienne Carriere wrote:

> 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 <etienne.carriere at linaro.org>
> Cc: Simon Glass <sjg at chromium.org>
> Cc: Peng Fan <peng.fan at nxp.com>
> Cc: Sudeep Holla <sudeep.holla at arm.com>
> Reviewed-by: Simon Glass <sjg at chromium.org>

Applied to u-boot/next, thanks!

-- 
Tom
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 659 bytes
Desc: not available
URL: <https://lists.denx.de/pipermail/u-boot/attachments/20201001/5063fe28/attachment.sig>