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Subject[PATCH 0/2] Add support for DSP IPC protocol driver
Date
From: Daniel Baluta <daniel.baluta@nxp.com>

Hifi4 DSP can be found on some i.MX8 platforms (e.g i.MX8QXP, i.MX8QM).
This patch series introduces the layer that allows Host CPU to
communicate with DSP.

This layer provides a doorbell and clients can used that to notify DSP
that a message is placed somewhere in the shared memory.

The protocol used is request - reply. Usually, Host/DSP write a message
in a shared memory area and notify the other side. The other side will
also write a reply in a designated shared memory area and then ring
the doorbell to let the counterpart that a message is ready.

Daniel Baluta (2):
firmware: imx: Add DSP IPC protocol driver
dt-bindings: arm: fsl: Add DSP IPC binding support

.../bindings/arm/freescale/fsl,dsp.yaml | 43 +++++
drivers/firmware/imx/Kconfig | 11 ++
drivers/firmware/imx/Makefile | 1 +
drivers/firmware/imx/imx-dsp.c | 167 ++++++++++++++++++
include/linux/firmware/imx/dsp.h | 61 +++++++
5 files changed, 283 insertions(+)
create mode 100644 Documentation/devicetree/bindings/arm/freescale/fsl,dsp.yaml
create mode 100644 drivers/firmware/imx/imx-dsp.c
create mode 100644 include/linux/firmware/imx/dsp.h

--
2.17.1

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