Support the remote devices on the remote processor via the RPMSG bus on i.MX platform.
Changes in v4: - add a documentation to describe the tranport protocol per Andrew's comments. - add a new handler to get the gpio direction. Changes in v3: - fix various format issue and return value check per Peng 's review comments. - add the logic to also populate the subnodes which are not in the device map per Arnaud's request. (in imx_rproc.c) - update the yaml per Frank's review comments. Changes in v2: - re-implemented the gpio driver per Linus Walleij's feedback by using GPIOLIB_IRQCHIP helper library. - fix various format issue per Mathieu/Peng 's review comments. - update the yaml doc per Rob's feedback Cc: Andrew Lunn <[email protected]> Cc: Mathieu Poirier <[email protected]> Cc: Arnaud POULIQUEN <[email protected]> Cc: Linus Walleij <[email protected]> Cc: [email protected] Shenwei Wang (5): dt-bindings: remoteproc: imx_rproc: Add "rpmsg" subnode support remoteproc: imx_rproc: Populate devices under "rpmsg" subnode docs: admin-guide: gpio: rpmsg: gpio over rpmsg bus gpio: imx-rpmsg: add imx-rpmsg GPIO driver arm64: dts: imx8ulp: Add rpmsg node under imx_rproc Documentation/admin-guide/gpio/gpio-rpmsg.rst | 202 ++++++++ Documentation/admin-guide/gpio/index.rst | 1 + .../bindings/remoteproc/fsl,imx-rproc.yaml | 123 +++++ arch/arm64/boot/dts/freescale/imx8ulp.dtsi | 27 + drivers/gpio/Kconfig | 17 + drivers/gpio/Makefile | 1 + drivers/gpio/gpio-imx-rpmsg.c | 467 ++++++++++++++++++ drivers/remoteproc/imx_rproc.c | 146 ++++++ include/linux/rpmsg/imx_rpmsg.h | 48 ++ 9 files changed, 1032 insertions(+) create mode 100644 Documentation/admin-guide/gpio/gpio-rpmsg.rst create mode 100644 drivers/gpio/gpio-imx-rpmsg.c create mode 100644 include/linux/rpmsg/imx_rpmsg.h -- 2.43.0
