On Tue, Sep 20, 2022 at 11:11:55AM +0300, Mikko Perttunen wrote: > From: Mikko Perttunen <mperttunen@xxxxxxxxxx> > > v3: > * Updated patch 3 based on comments > > v2: > * Updated patches 1,3 based on comments > * Added Acked-by to patch 2 > > Original message: > > Hi all, > > this series adds support for the HW video decoder, NVDEC, > on Tegra234 (Orin). The main change is a switch from Falcon > to RISC-V for the internal microcontroller, which brings along > a change in how the engine is booted. Otherwise it is backwards > compatible with earlier versions. > > In previous iterations, firmware was simply loaded from disk and > written into engine internal memory. Now, the engine has a > bootrom that loads the firmware from a carveout where it has been > loaded by the system bootloader; however, we still need to tell it > where that carveout is loaded and some offsets into it. For that, > the first patch adds a new memory controller API to query the > carveout address. The offsets are read from device tree -- the > expectation is that at flashing time (when the firmware is also > flashed), the flasher also delivers a device tree overlay with > values corresponding to the flashed firmware. > > The currently available Linux for Tegra release doesn't yet > include this device tree overlay flashing, and the firmware version > it contains is incompatible with this series. The plan is to fix > that for the next Linux for Tegra release, but if necessary, we > can postpone merging of this series to once those changes are > available. > > Thanks! > Mikko > > Mikko Perttunen (8): > memory: tegra: Add API for retrieving carveout bounds > dt-bindings: Add headers for NVDEC on Tegra234 > dt-bindings: Add bindings for Tegra234 NVDEC > arm64: tegra: Add NVDEC on Tegra234 > gpu: host1x: Add stream ID register data for NVDEC on Tegra234 > drm/tegra: nvdec: Support multiple clocks > drm/tegra: Add code for booting RISC-V based engines > drm/tegra: Add Tegra234 support to NVDEC driver > > .../gpu/host1x/nvidia,tegra234-nvdec.yaml | 156 ++++++++++++++++ > arch/arm64/boot/dts/nvidia/tegra234.dtsi | 27 +++ > drivers/gpu/drm/tegra/Makefile | 3 +- > drivers/gpu/drm/tegra/drm.c | 1 + > drivers/gpu/drm/tegra/nvdec.c | 171 +++++++++++++++--- > drivers/gpu/drm/tegra/riscv.c | 106 +++++++++++ > drivers/gpu/drm/tegra/riscv.h | 30 +++ > drivers/gpu/host1x/dev.c | 12 ++ > drivers/memory/tegra/mc.c | 25 +++ > drivers/memory/tegra/tegra234.c | 5 + > include/dt-bindings/clock/tegra234-clock.h | 4 + > include/dt-bindings/memory/tegra234-mc.h | 3 + > .../dt-bindings/power/tegra234-powergate.h | 1 + > include/dt-bindings/reset/tegra234-reset.h | 1 + > include/soc/tegra/mc.h | 11 ++ > 15 files changed, 530 insertions(+), 26 deletions(-) > create mode 100644 Documentation/devicetree/bindings/gpu/host1x/nvidia,tegra234-nvdec.yaml > create mode 100644 drivers/gpu/drm/tegra/riscv.c > create mode 100644 drivers/gpu/drm/tegra/riscv.h Applied, thanks. Thierry
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