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[v2,0/4] drm/msm: use firmware-name to find zap fw

Message ID 20200112195405.1132288-1-robdclark@gmail.com (mailing list archive)
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Series drm/msm: use firmware-name to find zap fw | expand

Message

Rob Clark Jan. 12, 2020, 7:53 p.m. UTC 
From: Rob Clark <robdclark@chromium.org>

For devices which use zap fw to take the GPU out of secure mode on
reset, the firmware is likely to be signed with a device specific key.
Meaning that we can't have a single filesystem (or /lib/firmware) that
works on multiple devices.

So allow a firmware-name to be specified in the zap-shader node in dt.
This moves the zap-shader node out of the core sdm845.dtsi and into per-
device dts files.  Which also removes the need for /delete-node/ in
sdm845-cheza.dtsi (as cheza devices do not use zap).

This aligns with how Bjorn has been handling the similar situation with
adsp/cdsp/mpss fw:

   https://patchwork.kernel.org/patch/11160089/

Rob Clark (4):
  drm/msm: support firmware-name for zap fw (v2)
  drm/msm: allow zapfw to not be specified in gpulist
  dt-bindings: drm/msm/gpu: Document firmware-name
  arm64: dts: sdm845: move gpu zap nodes to per-device dts

 .../devicetree/bindings/display/msm/gpu.txt   |  3 ++
 arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi    |  1 -
 arch/arm64/boot/dts/qcom/sdm845-db845c.dts    |  7 +++
 arch/arm64/boot/dts/qcom/sdm845-mtp.dts       |  7 +++
 arch/arm64/boot/dts/qcom/sdm845.dtsi          |  6 +--
 .../boot/dts/qcom/sdm850-lenovo-yoga-c630.dts |  7 +++
 drivers/gpu/drm/msm/adreno/adreno_gpu.c       | 50 +++++++++++++++----
 7 files changed, 64 insertions(+), 17 deletions(-)