Tegra's memory controller has a "memory hot reset" functionality that
blocks all memory transactions for the memory client, which is required
for a proper HW resetting. HW could be in process of performing DMA while
being reset and this could lead to a system hang or memory corruption, so
here comes the memory hot reset that blocks all interactions of HW with
memory so that it could be reset safely.
Changelog:
V4:
Fixed compilation warning about unused function for the case where
Tegra20 SoC isn't enabled in Kconfig, corrected typos in commit
messages.
V3:
Addressed review comments to V2 from Thierry Reding. MC now
uses generic reset controller API instead of a custom one,
hence DT changes are now involved and so Rob Herring is CC'd
for a review.
Added couple minor cleanup/correction patches.
V2:
Basically a re-send of V1 with some minor changes.
Dmitry Osipenko (14):
dt-bindings: arm: tegra: Remove duplicated Tegra30+ MC binding
dt-bindings: memory: tegra: Document #reset-cells property of the
Tegra30 MC
dt-bindings: arm: tegra: Document #reset-cells property of the Tegra20
MC
dt-bindings: memory: tegra: Add hot resets definitions
memory: tegra: Do not handle spurious interrupts
memory: tegra: Setup interrupts mask before requesting IRQ
memory: tegra: Apply interrupts mask per SoC
memory: tegra: Remove unused headers inclusions
memory: tegra: Squash tegra20-mc into common tegra-mc driver
memory: tegra: Introduce memory client hot reset
memory: tegra: Add Tegra124 memory controller hot resets
memory: tegra: Add Tegra114 memory controller hot resets
memory: tegra: Add Tegra30 memory controller hot resets
memory: tegra: Add Tegra20 memory controller hot resets
Thierry Reding (1):
memory: tegra: Add Tegra210 memory controller hot resets
.../bindings/arm/tegra/nvidia,tegra20-mc.txt | 12 +-
.../bindings/arm/tegra/nvidia,tegra30-mc.txt | 18 --
.../memory-controllers/nvidia,tegra30-mc.txt | 5 +
drivers/memory/Kconfig | 10 -
drivers/memory/Makefile | 1 -
drivers/memory/tegra/Makefile | 1 +
drivers/memory/tegra/mc.c | 358 +++++++++++++++++++--
drivers/memory/tegra/mc.h | 22 ++
drivers/memory/tegra/tegra114.c | 35 ++
drivers/memory/tegra/tegra124.c | 48 +++
drivers/memory/tegra/tegra20.c | 296 +++++++++++++++++
drivers/memory/tegra/tegra210.c | 53 ++-
drivers/memory/tegra/tegra30.c | 35 ++
drivers/memory/tegra20-mc.c | 254 ---------------
include/dt-bindings/memory/tegra114-mc.h | 19 ++
include/dt-bindings/memory/tegra124-mc.h | 25 ++
include/dt-bindings/memory/tegra20-mc.h | 21 ++
include/dt-bindings/memory/tegra210-mc.h | 31 ++
include/dt-bindings/memory/tegra30-mc.h | 19 ++
include/soc/tegra/mc.h | 37 ++-
20 files changed, 978 insertions(+), 322 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/arm/tegra/nvidia,tegra30-mc.txt
create mode 100644 drivers/memory/tegra/tegra20.c
delete mode 100644 drivers/memory/tegra20-mc.c
create mode 100644 include/dt-bindings/memory/tegra20-mc.h
--
2.16.3
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