Changes in v2: Fixup for recalc_rate ops for clk_rcg2_shared_ops: There could be few scenarios where shared clocks are configured at rate other than CXO by boot. In those cases there would be a mismatch between the rate calculated by the recalc shared ops and the actual HW register configuration. Fix the same by adding an additional check to read current src from CFG register and make a decision based on that.
Changes in v1: https://lkml.org/lkml/2018/1/31/209 This patch series does the miscellaneous changes to support clock nodes for SDM845. Below are the major changes for which the existing code does not have support. 1. Clear hardware clock control bit of RCGs where HW clock control bit is set by default so that software can control those root clocks. 2. Introduces clk_rcg2_shared_ops to support clock controller drivers for SDM845. With new shared ops, RCGs with shared branches will be configured to a safe source in disable path and actual RCG update configuration will be done in enable path instead of doing config update in set_rate. In set_rate(), just cache the rate instead of doing actual configuration update. Also each RCG in clock controller driver will have their own safe configuration frequency table to switch to safe frequency. 3. Add support for controlling Fabia PLL for which the support is not available in existing alpha PLL code. 4. Add Global Clock controller (GCC) driver for SDM845. This should allow most non-multimedia device drivers to probe and control their clocks. Amit Nischal (3): clk: qcom: Clear hardware clock control bit of RCG clk: qcom: Configure the RCGs to a safe source as needed clk: qcom: Add support for controlling Fabia PLL Taniya Das (1): clk: qcom: Add Global Clock controller (GCC) driver for SDM845 .../devicetree/bindings/clock/qcom,gcc.txt | 1 + drivers/clk/qcom/Kconfig | 11 + drivers/clk/qcom/Makefile | 1 + drivers/clk/qcom/clk-alpha-pll.c | 324 +- drivers/clk/qcom/clk-alpha-pll.h | 18 +- drivers/clk/qcom/clk-rcg.h | 8 +- drivers/clk/qcom/clk-rcg2.c | 160 +- drivers/clk/qcom/gcc-sdm845.c | 3619 ++++++++++++++++++++ include/dt-bindings/clock/qcom,gcc-sdm845.h | 242 ++ 9 files changed, 4373 insertions(+), 11 deletions(-) create mode 100644 drivers/clk/qcom/gcc-sdm845.c create mode 100644 include/dt-bindings/clock/qcom,gcc-sdm845.h -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation