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Date: Mon, 18 Sep 2017 17:00:55 +0530 From: Tirupathi Reddy T <tirupath@...eaurora.org> To: Rob Herring <robh@...nel.org> Cc: sboyd@...eaurora.org, mturquette@...libre.com, mark.rutland@....com, andy.gross@...aro.org, david.brown@...aro.org, linux-clk@...r.kernel.org, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org, linux-soc@...r.kernel.org Subject: Re: [PATCH V3] clk: qcom: Add spmi_pmic clock divider support On 9/13/2017 11:10 PM, Rob Herring wrote: > On Wed, Sep 06, 2017 at 05:30:07PM +0530, Tirupathi Reddy wrote: >> Clkdiv module provides a clock output on the PMIC with CXO as >> the source. This clock can be routed through PMIC GPIOs. Add >> a device driver to configure this clkdiv module. >> >> Signed-off-by: Tirupathi Reddy <tirupath@...eaurora.org> >> --- >> .../bindings/clock/clk-spmi-pmic-div.txt | 51 +++ >> drivers/clk/qcom/Kconfig | 9 + >> drivers/clk/qcom/Makefile | 1 + >> drivers/clk/qcom/clk-spmi-pmic-div.c | 342 +++++++++++++++++++++ >> 4 files changed, 403 insertions(+) >> create mode 100644 Documentation/devicetree/bindings/clock/clk-spmi-pmic-div.txt >> create mode 100644 drivers/clk/qcom/clk-spmi-pmic-div.c >> >> diff --git a/Documentation/devicetree/bindings/clock/clk-spmi-pmic-div.txt b/Documentation/devicetree/bindings/clock/clk-spmi-pmic-div.txt >> new file mode 100644 >> index 0000000..8b84b32 >> --- /dev/null >> +++ b/Documentation/devicetree/bindings/clock/clk-spmi-pmic-div.txt >> @@ -0,0 +1,51 @@ >> +Qualcomm Technologies, Inc. SPMI PMIC clock divider (clkdiv) >> + >> +clkdiv configures the clock frequency of a set of outputs on the PMIC. >> +These clocks are typically wired through alternate functions on >> +gpio pins. >> + >> +======================= >> +Properties >> +======================= >> + >> +- compatible >> + Usage: required >> + Value type: <string> >> + Definition: must be one of: >> + "qcom,spmi-clkdiv" > If this is not a fallback, drop it. Here "qcom,spmi-clkdiv" is used as generic string for registering only one clk and the pmic specific strings are used for registering more than one clk following the given base address in "reg" property. > >> + "qcom,pm8998-clkdiv" >> + >> +- reg >> + Usage: required >> + Value type: <prop-encoded-array> >> + Definition: Addresses and sizes for the memory of this CLKDIV >> + peripheral. >> + >> +- clocks: >> + Usage: required >> + Value type: <prop-encoded-array> >> + Definition: reference to the xo clock. >> + >> +- clock-names: >> + Usage: required >> + Value type: <stringlist> >> + Definition: must be "xo". > Missing #clock-cells Added in next patch set. > >> + >> +======= >> +Example >> +======= >> + >> +pm8998_clk_divs: qcom,clkdiv@...0 { > clock@...0 Addressed in next patch. > >> + compatible = "qcom,pm8998-clkdiv"; >> + reg = <0x5b00>; >> + #clock-cells = <1>; >> + clocks = <&xo_board>; >> + clock-names = "xo"; >> + >> + assigned-clocks = <&pm8998_clk_divs 1>, >> + <&pm8998_clk_divs 2>, >> + <&pm8998_clk_divs 3>; >> + assigned-clock-rates = <9600000>, >> + <9600000>, >> + <9600000>; >> +};
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