On Tue, Jul 14, 2026 at 01:24:39PM -0700, Ben Levinsky wrote: > Add a MicroBlaze/V BRAM-based remoteproc driver and corresponding binding > for AMD soft processors located in programmable logic. > > The series models a soft-core processor subsystem that executes firmware > from dual-port BRAM. The BRAM window is described in the processor-local > address space and translated to the Linux-visible system physical address > through the parent bus ranges property. > > This series depends on the remoteproc cleanup series available here: > > https://lore.kernel.org/linux-remoteproc/ah2aVdlsLqy9aeHP@p14s/ > > That series adds the common WC ioremap carveout callbacks and optional > ELF resource-table helper used by patch 2. > > v6: > Patch 1, dt-bindings: remoteproc: document AMD MicroBlaze/V BRAM-based > rproc > > - Corrected Krzysztof Kozlowski's Reviewed-by trailer to match the tag > provided during the v3 review. > > Patch 2, remoteproc: add AMD MicroBlaze/V BRAM-based remote processor > driver > > - Renamed the driver source and object from amd_bram_rproc to > amd_mbv_bram_rproc.
Applied. Thanks, Mathieu > > v5: > Patch 1, dt-bindings: remoteproc: document AMD MicroBlaze/V BRAM-based > rproc > > - Updated the binding title and patch wording to use MicroBlaze/V. > - Added Reviewed-by from Krzysztof Kozlowski. > > Patch 2, remoteproc: add AMD MicroBlaze/V BRAM-based remote processor > driver > > - Renamed the Kconfig symbol to AMD_MBV_BRAM_REMOTEPROC. > - Updated the Kconfig prompt to use MicroBlaze/V. > - Removed the reset GPIO and clock sentence from the Kconfig help text. > - Updated the driver and module descriptions to use MicroBlaze/V. > > v4: > Patch 1, dt-bindings: remoteproc: document AMD BRAM-based rproc > > - Sorted the SoC-specific compatible enum by name. > > Patch 2, remoteproc: add AMD BRAM-based remote processor driver > > - Dropped the driver-specific MAINTAINERS entry. > - Trimmed the Kconfig help text. > - Reused the common WC ioremap/iounmap carveout callbacks. > - Reused the common optional ELF resource-table helper. > - Used resource_size(&res) for the translated memory window size. > - Kept the coredump segment address as the processor-local device > address. The coredump path resolves segment addresses through > rproc_da_to_va() against the registered carveout device address, while > res.start is the Linux-visible system physical address after DT > translation and may differ from the processor-local BRAM address. > > v3: > This version updates the binding to use SoC-specific compatibles with > the fallback form discussed on the thread. > > Patch 1, dt-bindings: remoteproc: document AMD BRAM-based rproc > > - Reworked the compatible schema to use SoC-specific compatibles. > - Added amd,versal2-bram-rproc to the supported compatible list. > - Used xlnx,zynqmp-bram-rproc as the fallback compatible. > - Updated the example to match the new compatible scheme. > > Patch 2, remoteproc: add AMD BRAM-based remote processor driver > > - Updated the driver OF match table to bind via the > xlnx,zynqmp-bram-rproc fallback compatible. > > v2: > This version pivots the series away from a MicroBlaze-specific binding > and driver shape and instead models a BRAM-based soft-core processor > subsystem more generally. > > This follows the upstream feedback that amd,microblaze was too tied to > the processor architecture while also being too generic as a DT > compatible for the hardware interface being described. > > Patch 1, dt-bindings: remoteproc: document AMD BRAM-based rproc > > - Renamed the binding away from amd,microblaze and reframed it around a > BRAM-based soft-core processor subsystem. > - Dropped the redundant trailing "binding" wording from the patch > subject. > - Rewrote the binding text to describe the hardware rather than the Linux > remoteproc framework. > - Reworked the example to address the original dt_binding_check > complaints about the root node and simple-pm-bus example shape. > - Added a clocks property for the soft-core subsystem. > > Patch 2, remoteproc: add AMD BRAM-based remote processor driver > > - Renamed the driver away from the MicroBlaze-specific name to match the > BRAM-based binding. > - Added clock handling for the soft-core subsystem and the matching > COMMON_CLK dependency in Kconfig. > - Cleaned up the reset comments and removed the success dev_dbg() message > called out in review. > > Ben Levinsky (2): > dt-bindings: remoteproc: document AMD MicroBlaze/V BRAM-based rproc > remoteproc: add AMD MicroBlaze/V BRAM-based remote processor driver > > .../bindings/remoteproc/amd,bram-rproc.yaml | 105 +++++++++ > drivers/remoteproc/Kconfig | 9 + > drivers/remoteproc/Makefile | 1 + > drivers/remoteproc/amd_mbv_bram_rproc.c | 213 ++++++++++++++++++ > 4 files changed, 328 insertions(+) > create mode 100644 > Documentation/devicetree/bindings/remoteproc/amd,bram-rproc.yaml > create mode 100644 drivers/remoteproc/amd_mbv_bram_rproc.c > > -- > 2.34.1
