[PATCH v3 0/2] L2 cache controller support for SiFive FU540

[Yash Shah]

This patch series adds an L2 cache controller driver with DT documentation
for SiFive FU540-C000.

These two patches were initially part of the patch series:
'L2 cache controller and EDAC support for SiFive SoCs'
https://lkml.org/lkml/2019/4/15/320
In order to merge L2 cache controller driver without any dependency on EDAC,
the L2 cache controller patches are re-posted separately in this series.

The patchset is based on Linux 5.1-rc2 and tested on HiFive Unleashed
board with additional board related patches needed for testing can be
found at dev/yashs/L2_cache_controller branch of:
https://github.com/yashshah7/riscv-linux.git

Changes since v2
- Add a header file to expose Macros and extern functions
- Remove all single line functions

Changes since v1
- Mention the valid values for cache properties in DT documentation
- Remove the unnecessary property 'reg-names'
- Add "cache" to supported compatible string property
- Remove conditional checks from debugfs functions in sifive_l2_cache.c

Yash Shah (2):
  RISC-V: Add DT documentation for SiFive L2 Cache Controller
  RISC-V: sifive_l2_cache: Add L2 cache controller driver for SiFive
    SoCs

 .../devicetree/bindings/riscv/sifive-l2-cache.txt  |  51 ++++++
 arch/riscv/include/asm/sifive_l2_cache.h           |  16 ++
 arch/riscv/mm/Makefile                             |   1 +
 arch/riscv/mm/sifive_l2_cache.c                    | 175 +++++++++++++++++++++
 4 files changed, 243 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/riscv/sifive-l2-cache.txt
 create mode 100644 arch/riscv/include/asm/sifive_l2_cache.h
 create mode 100644 arch/riscv/mm/sifive_l2_cache.c

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1.9.1