The Qualcomm LLCC/EDAC drivers were using a fixed register stride for
accessing the (Control and Status Regsiters) CSRs of each LLCC bank.
This offset only works for some SoCs like SDM845 for which driver support
was initially added.
But the later SoCs use different register stride that vary between the
banks with holes in-between. So it is not possible to use a single register
stride for accessing the CSRs of each bank. By doing so could result in a
crash with the current drivers. So far this crash is not reported since
EDAC_QCOM driver is not enabled in ARM64 defconfig and no one tested the
driver extensively by triggering the EDAC IRQ (that's where each bank
CSRs are accessed).
For fixing this issue, let's obtain the base address of each LLCC bank from
devicetree and get rid of the fixed stride.
This series affects multiple platforms but I have only tested this on
SM8250 and SM8450. Testing on other platforms is welcomed.
Thanks,
Mani
Manivannan Sadhasivam (12):
dt-bindings: arm: msm: Update the maintainers for LLCC
dt-bindings: arm: msm: Fix register regions used for LLCC banks
arm64: dts: qcom: sdm845: Fix the base addresses of LLCC banks
arm64: dts: qcom: sc7180: Fix the base addresses of LLCC banks
arm64: dts: qcom: sc7280: Fix the base addresses of LLCC banks
arm64: dts: qcom: sc8280xp: Fix the base addresses of LLCC banks
arm64: dts: qcom: sm8150: Fix the base addresses of LLCC banks
arm64: dts: qcom: sm8250: Fix the base addresses of LLCC banks
arm64: dts: qcom: sm8350: Fix the base addresses of LLCC banks
arm64: dts: qcom: sm8450: Fix the base addresses of LLCC banks
arm64: dts: qcom: sm6350: Fix the base addresses of LLCC banks
qcom: llcc/edac: Fix the base address used for accessing LLCC banks
.../bindings/arm/msm/qcom,llcc.yaml | 128 ++++++++++++++++--
arch/arm64/boot/dts/qcom/sc7180.dtsi | 2 +-
arch/arm64/boot/dts/qcom/sc7280.dtsi | 5 +-
arch/arm64/boot/dts/qcom/sc8280xp.dtsi | 10 +-
arch/arm64/boot/dts/qcom/sdm845.dtsi | 7 +-
arch/arm64/boot/dts/qcom/sm6350.dtsi | 2 +-
arch/arm64/boot/dts/qcom/sm8150.dtsi | 7 +-
arch/arm64/boot/dts/qcom/sm8250.dtsi | 7 +-
arch/arm64/boot/dts/qcom/sm8350.dtsi | 7 +-
arch/arm64/boot/dts/qcom/sm8450.dtsi | 7 +-
drivers/edac/qcom_edac.c | 14 +-
drivers/soc/qcom/llcc-qcom.c | 64 +++++----
include/linux/soc/qcom/llcc-qcom.h | 4 +-
13 files changed, 197 insertions(+), 67 deletions(-)
--
2.25.1
