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The i.MX95 System manager exports SCMI MISC protocol for linux to do
various settings, such as set board gpio expander as wakeup source.
The driver is to add the support.
Reviewed-by: Cristian Marussi <[email protected]>
Signed-off-by: Peng Fan <[email protected]>
Message-Id: <[email protected]>
Signed-off-by: Sudeep Holla <[email protected]>
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The Kconfig options belongs closer to the corresponding implementations,
hence let's move them from the soc- and firmware subsystem to the pmdomain
subsystem.
Cc: Shawn Guo <[email protected]>
Cc: Sascha Hauer <[email protected]>
Cc: Fabio Estevam <[email protected]>
Cc: Peng Fan <[email protected]>
Cc: <[email protected]>
Cc: <[email protected]>
Acked-by: Peng Fan <[email protected]>
Acked-by: Shawn Guo <[email protected]>
Signed-off-by: Ulf Hansson <[email protected]>
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Fix build error in firmware/imx/ selecting SOC_BUS.
riscv32-linux-ld: drivers/firmware/imx/imx-scu-soc.o: in function `.L9':
imx-scu-soc.c:(.text+0x1b0): undefined reference to `soc_device_register'
Fixes: edbee095fafb ("firmware: imx: add SCU firmware driver support")
Signed-off-by: Randy Dunlap <[email protected]>
Reported-by: kernel test robot <[email protected]>
Cc: Atish Patra <[email protected]>
Cc: Palmer Dabbelt <[email protected]>
Cc: Ard Biesheuvel <[email protected]>
Cc: Anson Huang <[email protected]>
Cc: Daniel Baluta <[email protected]>
Reviewed-by: Dong Aisheng <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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It is nice to allow compile-testing the firmware drivers, but this
fails when the dependency is a loadable module:
aarch64-linux-ld: drivers/firmware/imx/scu-pd.o: in function `imx_sc_pd_power':
scu-pd.c:(.text+0xd8): undefined reference to `imx_scu_call_rpc'
aarch64-linux-ld: scu-pd.c:(.text+0x108): undefined reference to `imx_scu_call_rpc'
aarch64-linux-ld: drivers/firmware/imx/scu-pd.o: in function `imx_sc_pd_probe':
Change the dependencies to ensure that any driver we depend on is
either reachable or we are compile-testing and it is disabled,
effectively reverting most of the previous changes that turned
out to be incorrect.
Fixes: a9f85f93ed73 ("firmware: imx: add COMPILE_TEST support")
Fixes: 5b00b8375416 ("firmware: imx: add COMPILE_TEST for IMX_SCU driver")
Signed-off-by: Arnd Bergmann <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Add COMPILE_TEST support to i.MX SCU drivers for better compile
testing coverage.
Signed-off-by: Anson Huang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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IMX DSP is only needed by SOF or any other module that
wants to communicate with the DSP. When SOF is build
as a module IMX DSP is forced to be built inside the
kernel image. This is not optimal, so allow IMX DSP
to be built as a module.
Signed-off-by: Daniel Baluta <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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Some of i.MX8 processors (e.g i.MX8QM, i.MX8QXP) contain
the Tensilica HiFi4 DSP for advanced pre- and post-audio
processing.
The communication between Host CPU and DSP firmware is
taking place using a shared memory area for message passing
and a dedicated Messaging Unit for notifications.
DSP IPC protocol offers a doorbell interface using
imx-mailbox API.
We use 4 MU channels (2 x TXDB, 2 x RXDB) to implement a
request-reply protocol.
Connection 0 (txdb0, rxdb0):
- Host writes messasge to shared memory [SHMEM]
- Host sends a request [MU]
- DSP handles request [SHMEM]
- DSP sends reply [MU]
Connection 1 (txdb1, rxdb1):
- DSP writes a message to shared memory [SHMEM]
- DSP sends a request [MU]
- Host handles request [SHMEM]
- Host sends reply [MU]
The protocol interface will be used by a Host client to
communicate with the DSP. First client will be the i.MX8
part from Sound Open Firmware infrastructure.
The protocol offers the following interface:
On Tx:
- imx_dsp_ring_doorbell, will be called to notify the DSP
that it needs to handle a request.
On Rx:
- clients need to provide two callbacks:
.handle_reply
.handle_request
- the callbacks will be used by the protocol on
notification arrival from DSP.
Signed-off-by: Daniel Baluta <[email protected]>
Reviewed-by: Oleksij Rempel <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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Add SPDX license identifiers to all Make/Kconfig files which:
- Have no license information of any form
These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:
GPL-2.0-only
Signed-off-by: Thomas Gleixner <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Some i.MX SoCs contain a system controller that is responsible for
controlling the state of the IPs that are present. Communication
between the host processor running an OS and the system controller
happens through a SCU protocol. This patch adds SCU protocol based
power domains drivers.
Cc: Ulf Hansson <[email protected]>
Cc: Rob Herring <[email protected]>
Cc: Shawn Guo <[email protected]>
Cc: Sascha Hauer <[email protected]>
Cc: Fabio Estevam <[email protected]>
Cc: "Rafael J. Wysocki" <[email protected]>
Cc: Kevin Hilman <[email protected]>
Cc: [email protected]
Signed-off-by: Dong Aisheng <[email protected]>
Reviewed-by: Ulf Hansson <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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The System Controller Firmware (SCFW) is a low-level system function
which runs on a dedicated Cortex-M core to provide power, clock, and
resource management. It exists on some i.MX8 processors. e.g. i.MX8QM
(QM, QP), and i.MX8QX (QXP, DX).
This patch implements the SCU firmware IPC function and the common
message sending API sc_call_rpc.
Cc: Shawn Guo <[email protected]>
Cc: Fabio Estevam <[email protected]>
Cc: Jassi Brar <[email protected]>
Reviewed-by: Sascha Hauer <[email protected]>
Signed-off-by: Dong Aisheng <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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