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From:   Sean Anderson <sean.anderson@seco.com>
To:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        linux-usb@vger.kernel.org
Cc:     linux-kernel@vger.kernel.org,
        Robert Hancock <robert.hancock@calian.com>,
        Baruch Siach <baruch@tkos.co.il>,
        Felipe Balbi <balbi@kernel.org>,
        Balaji Prakash J <bjagadee@codeaurora.org>,
        Sean Anderson <sean.anderson@seco.com>,
        Andy Gross <agross@kernel.org>,
        Bjorn Andersson <bjorn.andersson@linaro.org>,
        Michal Simek <michal.simek@xilinx.com>,
        Rob Herring <robh+dt@kernel.org>, devicetree@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org
Subject: [PATCH 0/6] usb: dwc3: Calculate REFCLKPER et. al. from reference clock
Date:   Fri, 14 Jan 2022 18:38:58 -0500
Message-Id: <20220114233904.907918-1-sean.anderson@seco.com>
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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@calian.com/


Sean Anderson (6):
  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: Handle fractional reference clocks
  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                       | 98 ++++++++++++++++---
 drivers/usb/dwc3/core.h                       |  6 +-
 6 files changed, 98 insertions(+), 24 deletions(-)

-- 
2.25.1