On Monday, April 10th, 2023 at 11:00 PM, Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> wrote: > On MSM8996 two CPU clusters are interconnected using the Core Bus > Fabric (CBF). In order for the CPU clusters to function properly, it > should be clocked following the core's frequencies to provide adequate > bandwidth. > > Register CBF as a clock (required for CPU to boot) and add a tiny > interconnect layer on top of it to let cpufreq/opp scale the CBF clock. > > Changes since v4: > - Fixed typos in commit messages > > Changes since v3: > - Dropped merged patches > - Moved interconnect shim to drivers/interconnect/icc-clk.c > > Changes since v2: > - Added interconnect-related bindings > - Switched CPU and CBF clocks to RPM_SMD_XO_A_CLK_SRC > > Changes since v1: > - Relicensed schema to GPL-2.0 + BSD-2-Clause (Krzysztof) > - Changed clock driver to use parent_hws (Konrad) > - Fixed indentation in CBF clock driver (Konrad) > - Changed MODULE_LICENSE of CBF clock driver to GPL from GPL-v2 > - Switched CBF to use RPM_SMD_XO_CLK_SRC as one of the parents > - Enabled RPM_SMD_XO_CLK_SRC on msm8996 platform and switch to it from > RPM_SMD_BB_CLK1 clock > > > Dmitry Baryshkov (4): > dt-bindings: interconnect/msm8996-cbf: add defines to be used by CBF > interconnect: add clk-based icc provider support > clk: qcom: cbf-msm8996: scale CBF clock according to the CPUfreq > arm64: dts: qcom: msm8996: scale CBF clock according to the CPUfreq > > arch/arm64/boot/dts/qcom/msm8996.dtsi | 51 ++++++ > drivers/clk/qcom/Kconfig | 1 + > drivers/clk/qcom/clk-cbf-8996.c | 59 +++++- > drivers/interconnect/Kconfig | 6 + > drivers/interconnect/Makefile | 2 + > drivers/interconnect/icc-clk.c | 168 ++++++++++++++++++ > .../interconnect/qcom,msm8996-cbf.h | 12 ++ > include/linux/interconnect-clk.h | 22 +++ > 8 files changed, 320 insertions(+), 1 deletion(-) > create mode 100644 drivers/interconnect/icc-clk.c > create mode 100644 include/dt-bindings/interconnect/qcom,msm8996-cbf.h > create mode 100644 include/linux/interconnect-clk.h > > -- > 2.30.2 After adding support for MSM8996 Pro [1], Tested-by: Yassine Oudjana <y.oudjana@xxxxxxxxxxxxxx> [1] https://lore.kernel.org/linux-arm-msm/20230503130051.144708-1-y.oudjana@xxxxxxxxxxxxxx/
