mbox series

[0/2] Add support for DSP IPC protocol driver

Message ID 20190614081650.11880-1-daniel.baluta@nxp.com (mailing list archive)
Headers show
Series Add support for DSP IPC protocol driver | expand

Message

Daniel Baluta June 14, 2019, 8:16 a.m. UTC 
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