u-boot.git/drivers/firmware/scmi, branch v2022.07

clk: scmi: register scmi clocks with CCF

2022-03-02T22:42:06Z

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 Cc: Sean Anderson Cc: Clement Leger Cc: Patrick Delaunay Reviewed-by: Patrick Delaunay Signed-off-by: Gabriel Fernandez Signed-off-by: Etienne Carriere

firmware: scmi: fix sandbox and related tests for clock discovery

2022-03-02T22:42:06Z

Updates sandbox SCMI clock driver and tests since enabling CCF will mandate clock discovery that is all exposed SCMI clocks shall be discovered at initialization. For this reason, sandbox SCMI clock driver must emulate all clocks exposed by SCMI server, not only those effectively consumed by some other U-Boot devices. Therefore the sandbox SCMI test driver exposes 3 clocks (IDs 0, 1 and 2) and sandbox SCMI clock consumer driver gets 2 of them. Cc: Simon Glass Reviewed-by: Patrick Delaunay Signed-off-by: Etienne Carriere

scmi: change parameter dev in devm_scmi_process_msg

2022-03-02T22:42:06Z

Changes devm_scmi_process_msg() first argument from target parent device to current SCMI device and lookup the SCMI agent device among SCMI device parents for find the SCMI agent operator needed for communication with the firmware. This change is needed in order to support CCF in clk_scmi driver unless what CCF will fail to find the right udevice related to exposed SCMI clocks. This patch allows to simplify the caller sequence, using SCMI device reference as parameter instead of knowing SCMI uclass topology. This change also adds some protection in case devm_scmi_process_msg() API function is called for an invalid device type. Cc: Lukasz Majewski Cc: Sean Anderson Cc: Jaehoon Chung Cc: Patrick Delaunay Reviewed-by: Patrick Delaunay Signed-off-by: Etienne Carriere

sandbox: scmi: test against a single scmi agent

2022-03-02T22:42:06Z

As per DT bindings since Linux kernel v5.14, the device tree can define only 1 SCMI agent node that is named scmi [1]. As a consequence, change implementation of the SCMI driver test through sandbox architecture to reflect that. This change updates sandbox test DT and sandbox SCMI driver accordingly since all these are impacted. Cc: Simon Glass Reviewed-by: Patrick Delaunay Signed-off-by: Etienne Carriere

firmware: scmi: Add OP-TEE transport

2021-11-23T18:54:43Z

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: smccc transport: simplify probe sequence

2021-11-23T18:53:03Z

Minor simplification in scmi_smccc_probe() exit sequence. Cc: Simon Glass Cc: Patrice Chotard Cc: Patrick Delaunay Signed-off-by: Etienne Carriere Reviewed-by: Patrick Delaunay

firmware: scmi: smccc transport: use plat data, not priv data

2021-11-23T18:53:03Z

Change SCMI smccc transport drivers to use platform data rather than private data for channel reference since it only stores platform data retrieved from the DT. Consequently the probe handler is replaced with a of_to_plat handler. Cc: Simon Glass Cc: Patrice Chotard Cc: Patrick Delaunay Signed-off-by: Etienne Carriere Reviewed-by: Patrick Delaunay

firmware: scmi: mailbox transport: use plat data, not priv data

2021-11-23T18:53:03Z

Change SCMI mailbox transport drivers to use platform data rather than private data for channel reference since it only stores platform data retrieved from the DT. Consequently the probe handler is replaced with a of_to_plat handler. Cc: Simon Glass Cc: Patrice Chotard Cc: Patrick Delaunay Signed-off-by: Etienne Carriere Reviewed-by: Patrick Delaunay

firmware: scmi: mailbox transport: fix probe failure implementation

2021-11-23T18:53:03Z

Correct scmi mailbox probe function that can't free the scmi channel instance since its auto-allocated by the device model framework. Cc: Simon Glass Cc: Patrice Chotard Cc: Patrick Delaunay Signed-off-by: Etienne Carriere Reviewed-by: Patrick Delaunay

firmware: scmi: add configs to select the supported agents

2021-11-23T18:53:03Z

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