This is a rework of patches 3-5 of [1]. It attempts to correctly program REFCLKPER and REFCLK_FLADJ based on the reference clock frequency. Since we no longer need a special property duplicating this configuration, snps,ref-clock-period-ns is deprecated. Please test this! Patches 3/4 in this series have the effect of programming REFCLKPER and REFCLK_FLADJ on boards which already configure the "ref" clock. I have build tested, but not much else. [1] https://lore.kernel.org/linux-usb/20220114044230.2677283-1-robert.hancock@xxxxxxxxxx/ Changes in v3: - Define each variable on its own line - Rebase onto linux/master - Update comment to notes some things mentioned during review Changes in v2: - Add snps,ref-clock-frequency-hz property for ACPI - Also program GFLADJ.240MHZDECR - Document clock members - Don't program GFLADJ if the version is < 2.50a Sean Anderson (7): dt-bindings: usb: dwc3: Deprecate snps,ref-clock-period-ns usb: dwc3: Get clocks individually usb: dwc3: Calculate REFCLKPER based on reference clock usb: dwc3: Program GFLADJ usb: dwc3: Add snps,ref-clock-frequency-hz property for ACPI arm64: dts: zynqmp: Move USB clocks to dwc3 node arm64: dts: ipq6018: Use reference clock to set dwc3 period .../devicetree/bindings/usb/snps,dwc3.yaml | 7 +- arch/arm64/boot/dts/qcom/ipq6018.dtsi | 3 +- .../arm64/boot/dts/xilinx/zynqmp-clk-ccf.dtsi | 4 +- arch/arm64/boot/dts/xilinx/zynqmp.dtsi | 4 +- drivers/usb/dwc3/core.c | 117 +++++++++++++++--- drivers/usb/dwc3/core.h | 17 ++- 6 files changed, 125 insertions(+), 27 deletions(-) -- 2.25.1
