[PATCH 0/3] drm/msm: use firmware-name to find zap fw

Rob Clark
2020-01-08T01:39:05Z

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 (3):
drm/msm: support firmware-name for zap fw
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 | 8 +++++
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 | 32 +++++++++++++++++--
7 files changed, 55 insertions(+), 9 deletions(-)

--
2.24.1