Access to GICR_WAKER is restricted on msm8996 SoC in Hypervisor. There are many devices out there with this restriction in place and there has been no update to this firmware since last few years, making those devices totally unusable for upstream development. My previous attempts to add quirk based on IIDR register value seems to be flawed by the fact that the value conflicted with other SoCs. Last Suggestion by Marc Z using compatible seems to be the only way to apply quirks required for msm8996 based SoCs. Here is the patchset which add new compatible for msm8996 gicv3 and add support gic_enable_of_quirks() followed by the actual quirk required for msm8996. Without this quirk many qcom SoCs (atleast 3 that I know) are unable to boot mainline. Changes since v3: - removed __maybe unused annotation - moved enabling quirks to gic_of_init() as suggested by Marc - fixed quick comment as suggest by Marc Thanks, Srini Srinivas Kandagatla (4): dt-bindings/gic-v3: Add msm8996 compatible string irqchip/gic: common: add support to device tree based quirks irqchip: gic-v3: Add quirk for msm8996 secured registers arm64: dts: add msm8996 compatible to gicv3 .../interrupt-controller/arm,gic-v3.txt | 4 ++- arch/arm64/boot/dts/qcom/msm8996.dtsi | 2 +- drivers/irqchip/irq-gic-common.c | 12 +++++++++ drivers/irqchip/irq-gic-common.h | 3 +++ drivers/irqchip/irq-gic-v3.c | 25 +++++++++++++++++++ 5 files changed, 44 insertions(+), 2 deletions(-) -- 2.19.2
