On Fri, Apr 12, 2024 at 11:37:04AM -0700, Tanmay Shah wrote: > Tightly-Coupled Memories(TCMs) are low-latency memory that provides > predictable instruction execution and predictable data load/store > timing. Each Cortex-R5F processor contains exclusive two 64 KB memory > banks on the ATCM and BTCM ports, for a total of 128 KB of memory. > In lockstep mode, both 128KB memory is accessible to the cluster. > > As per ZynqMP Ultrascale+ Technical Reference Manual UG1085, following > is address space of TCM memory. The bindings in this patch series > introduces properties to accommodate following address space with > address translation between Linux and Cortex-R5 views. > > | | | | > | --- | --- | --- | > | *Mode* | *R5 View* | *Linux view* | Notes | > | *Split Mode* | *start addr*| *start addr* | | > | R5_0 ATCM (64 KB) | 0x0000_0000 | 0xFFE0_0000 | | > | R5_0 BTCM (64 KB) | 0x0002_0000 | 0xFFE2_0000 | | > | R5_1 ATCM (64 KB) | 0x0000_0000 | 0xFFE9_0000 | alias of 0xFFE1_0000 | > | R5_1 BTCM (64 KB) | 0x0002_0000 | 0xFFEB_0000 | alias of 0xFFE3_0000 | > | ___ | ___ | ___ | | > | *Lockstep Mode* | | | | > | R5_0 ATCM (128 KB) | 0x0000_0000 | 0xFFE0_0000 | | > | R5_0 BTCM (128 KB) | 0x0002_0000 | 0xFFE2_0000 | | > > References: > UG1085 TCM address space: > https://docs.xilinx.com/r/en-US/ug1085-zynq-ultrascale-trm/Tightly-Coupled-Memory-Address-Map > I have applied patches 1, 2 and 4 of this set. Patch 3 should to through Michal's tree. Thanks, Mathieu > --- > > prerequisite-patch-link: https://lore.kernel.org/all/d4556268-8274-4089-949f-3b97d67793c7@xxxxxxxxx/ > Base Branch: 6.9.rc2 > > Changes in v15: > - Use hardcode TCM addresses as fallback method if "reg" unavailable > - Use new bindings for r5fss subsystem > > Changes in v14: > - Add xlnx,tcm-mode property and use it for TCM configuration > - Add Versal and Versal-NET platform support > - Maintain backward compatibility for ZynqMP platform and use hardcode > TCM addresses > > Changes in v13: > - Have power-domains property for lockstep case instead of > keeping it flexible. > - Add "items:" list in power-domains property > > > Radhey Shyam Pandey (1): > dt-bindings: remoteproc: add Tightly Coupled Memory (TCM) bindings > > Tanmay Shah (3): > remoteproc: zynqmp: fix lockstep mode memory region > dts: zynqmp: add properties for TCM in remoteproc > remoteproc: zynqmp: parse TCM from device tree > > .../remoteproc/xlnx,zynqmp-r5fss.yaml | 279 ++++++++++++++++-- > .../boot/dts/xilinx/zynqmp-zcu102-rev1.0.dts | 8 + > arch/arm64/boot/dts/xilinx/zynqmp.dtsi | 67 ++++- > drivers/remoteproc/xlnx_r5_remoteproc.c | 273 +++++++++-------- > 4 files changed, 459 insertions(+), 168 deletions(-) > > > base-commit: 4d5aabb6843939fad36912be8bf109adf9af0848 > -- > 2.25.1 >
