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Message-ID: <20200129205759.GG71044@google.com>
Date: Wed, 29 Jan 2020 12:57:59 -0800
From: Matthias Kaehlcke <mka@...omium.org>
To: Sandeep Maheswaram <sanm@...eaurora.org>
Cc: Andy Gross <agross@...nel.org>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
Kishon Vijay Abraham I <kishon@...com>,
Rob Herring <robh+dt@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Stephen Boyd <swboyd@...omium.org>,
Doug Anderson <dianders@...omium.org>,
linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org
Subject: Re: [PATCH v4 1/8] dt-bindings: phy: qcom,qusb2: Convert QUSB2 phy
bindings to yaml
On Wed, Jan 29, 2020 at 12:28:20PM -0800, Matthias Kaehlcke wrote:
> On Wed, Jan 29, 2020 at 07:21:52PM +0530, Sandeep Maheswaram wrote:
> > Convert QUSB2 phy bindings to DT schema format using json-schema.
> >
> > Signed-off-by: Sandeep Maheswaram <sanm@...eaurora.org>
> > ---
> > .../devicetree/bindings/phy/qcom,qusb2-phy.yaml | 142 +++++++++++++++++++++
> > .../devicetree/bindings/phy/qcom-qusb2-phy.txt | 68 ----------
> > 2 files changed, 142 insertions(+), 68 deletions(-)
> > create mode 100644 Documentation/devicetree/bindings/phy/qcom,qusb2-phy.yaml
> > delete mode 100644 Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt
> >
> > diff --git a/Documentation/devicetree/bindings/phy/qcom,qusb2-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,qusb2-phy.yaml
> > new file mode 100644
> > index 0000000..90b3cc6
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/phy/qcom,qusb2-phy.yaml
> > @@ -0,0 +1,142 @@
> > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> > +
> > +%YAML 1.2
> > +---
> > +$id: "http://devicetree.org/schemas/phy/qcom,qusb2-phy.yaml#"
> > +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> > +
> > +title: Qualcomm QUSB2 phy controller
> > +
> > +maintainers:
> > + - Manu Gautam <mgautam@...eaurora.org>
> > +
> > +description:
> > + QUSB2 controller supports LS/FS/HS usb connectivity on Qualcomm chipsets.
> > +
> > +properties:
> > + compatible:
> > + enum:
> > + - qcom,msm8996-qusb2-phy
> > + - qcom,msm8998-qusb2-phy
> > + - qcom,sdm845-qusb2-phy
> > + reg:
> > + maxItems: 1
> > +
> > + "#phy-cells":
> > + const: 0
> > +
> > + clocks:
> > + minItems: 2
> > + items:
> > + - description: phy config clock
> > + - description: 19.2 MHz ref clk
> > + - description: phy interface clock (Optional)
> > +
> > + clock-names:
> > + minItems: 2
> > + items:
> > + - const: cfg_ahb
> > + - const: ref
> > + - const: iface
> > +
> > + vdda-pll-supply:
> > + description:
> > + Phandle to 1.8V regulator supply to PHY refclk pll block.
> > +
> > + vdda-phy-dpdm-supply:
> > + description:
> > + Phandle to 3.1V regulator supply to Dp/Dm port signals.
> > +
> > + resets:
> > + maxItems: 1
> > +
> > + nvmem-cells:
> > + maxItems: 1
> > + description:
> > + Phandle to nvmem cell that contains 'HS Tx trim'
> > + tuning parameter value for qusb2 phy.
> > +
> > + qcom,tcsr-syscon:
> > + description:
> > + Phandle to TCSR syscon register region.
> > + $ref: /schemas/types.yaml#/definitions/cell
> > +
> > + qcom,imp-res-offset-value:
> > + description:
> > + It is a 6 bit value that specifies offset to be
> > + added to PHY refgen RESCODE via IMP_CTRL1 register. It is a PHY
> > + tuning parameter that may vary for different boards of same SOC.
> > + This property is applicable to only QUSB2 v2 PHY.
> > + allOf:
> > + - $ref: /schemas/types.yaml#/definitions/uint32
> > + - minimum: 0
> > + maximum: 63
> > + default: 0
> > +
> > + qcom,hstx-trim-value:
> > + description:
> > + It is a 4 bit value that specifies tuning for HSTX
> > + output current.
> > + Possible range is - 15mA to 24mA (stepsize of 600 uA).
> > + See dt-bindings/phy/phy-qcom-qusb2.h for applicable values.
> > + This property is applicable to only QUSB2 v2 PHY.
> > + allOf:
> > + - $ref: /schemas/types.yaml#/definitions/uint32
> > + - minimum: 0
> > + maximum: 15
> > + default: 3
> > +
> > + qcom,preemphasis-level:
> > + description:
> > + It is a 2 bit value that specifies pre-emphasis level.
> > + Possible range is 0 to 15% (stepsize of 5%).
> > + See dt-bindings/phy/phy-qcom-qusb2.h for applicable values.
> > + This property is applicable to only QUSB2 v2 PHY.
> > + allOf:
> > + - $ref: /schemas/types.yaml#/definitions/uint32
> > + - minimum: 0
> > + maximum: 3
> > + default: 2
> > +
> > + qcom,preemphasis-width:
> > + description:
> > + It is a 1 bit value that specifies how long the HSTX
> > + pre-emphasis (specified using qcom,preemphasis-level) must be in
> > + effect. Duration could be half-bit of full-bit.
> > + See dt-bindings/phy/phy-qcom-qusb2.h for applicable values.
> > + This property is applicable to only QUSB2 v2 PHY.
> > + allOf:
> > + - $ref: /schemas/types.yaml#/definitions/uint32
> > + - minimum: 0
> > + maximum: 1
> > + default: 0
> > +
> > +required:
> > + - compatible
> > + - reg
> > + - "#phy-cells"
> > + - clocks
> > + - clock-names
> > + - vdda-pll-supply
> > + - vdda-phy-dpdm-supply
> > + - resets
> > +
> > +
> > +examples:
> > + - |
> > + #include <dt-bindings/clock/qcom,gcc-msm8996.h>
> > + hsusb_phy: phy@...1000 {
> > + compatible = "qcom,msm8996-qusb2-phy";
> > + reg = <0x7411000 0x180>;
> > + #phy-cells = <0>;
> > +
> > + clocks = <&gcc GCC_USB_PHY_CFG_AHB2PHY_CLK>,
> > + <&gcc GCC_RX1_USB2_CLKREF_CLK>;
> > + clock-names = "cfg_ahb", "ref";
> > +
> > + vdda-pll-supply = <&pm8994_l12>;
> > + vdda-phy-dpdm-supply = <&pm8994_l24>;
> > +
> > + resets = <&gcc GCC_QUSB2PHY_PRIM_BCR>;
> > + nvmem-cells = <&qusb2p_hstx_trim>;
> > + };
> > diff --git a/Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt b/Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt
> > deleted file mode 100644
> > index fe29f9e..0000000
> > --- a/Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt
> > +++ /dev/null
> > @@ -1,68 +0,0 @@
> > -Qualcomm QUSB2 phy controller
> > -=============================
> > -
> > -QUSB2 controller supports LS/FS/HS usb connectivity on Qualcomm chipsets.
> > -
> > -Required properties:
> > - - compatible: compatible list, contains
> > - "qcom,msm8996-qusb2-phy" for 14nm PHY on msm8996,
> > - "qcom,msm8998-qusb2-phy" for 10nm PHY on msm8998,
> > - "qcom,sdm845-qusb2-phy" for 10nm PHY on sdm845.
> > -
> > - - reg: offset and length of the PHY register set.
> > - - #phy-cells: must be 0.
> > -
> > - - clocks: a list of phandles and clock-specifier pairs,
> > - one for each entry in clock-names.
> > - - clock-names: must be "cfg_ahb" for phy config clock,
> > - "ref" for 19.2 MHz ref clk,
> > - "iface" for phy interface clock (Optional).
> > -
> > - - vdda-pll-supply: Phandle to 1.8V regulator supply to PHY refclk pll block.
> > - - vdda-phy-dpdm-supply: Phandle to 3.1V regulator supply to Dp/Dm port signals.
> > -
> > - - resets: Phandle to reset to phy block.
> > -
> > -Optional properties:
> > - - nvmem-cells: Phandle to nvmem cell that contains 'HS Tx trim'
> > - tuning parameter value for qusb2 phy.
> > -
> > - - qcom,tcsr-syscon: Phandle to TCSR syscon register region.
> > - - qcom,imp-res-offset-value: It is a 6 bit value that specifies offset to be
> > - added to PHY refgen RESCODE via IMP_CTRL1 register. It is a PHY
> > - tuning parameter that may vary for different boards of same SOC.
> > - This property is applicable to only QUSB2 v2 PHY (sdm845).
> > - - qcom,hstx-trim-value: It is a 4 bit value that specifies tuning for HSTX
> > - output current.
> > - Possible range is - 15mA to 24mA (stepsize of 600 uA).
> > - See dt-bindings/phy/phy-qcom-qusb2.h for applicable values.
> > - This property is applicable to only QUSB2 v2 PHY (sdm845).
> > - Default value is 22.2mA for sdm845.
> > - - qcom,preemphasis-level: It is a 2 bit value that specifies pre-emphasis level.
> > - Possible range is 0 to 15% (stepsize of 5%).
> > - See dt-bindings/phy/phy-qcom-qusb2.h for applicable values.
> > - This property is applicable to only QUSB2 v2 PHY (sdm845).
> > - Default value is 10% for sdm845.
> > -- qcom,preemphasis-width: It is a 1 bit value that specifies how long the HSTX
> > - pre-emphasis (specified using qcom,preemphasis-level) must be in
> > - effect. Duration could be half-bit of full-bit.
> > - See dt-bindings/phy/phy-qcom-qusb2.h for applicable values.
> > - This property is applicable to only QUSB2 v2 PHY (sdm845).
> > - Default value is full-bit width for sdm845.
> > -
> > -Example:
> > - hsusb_phy: phy@...1000 {
> > - compatible = "qcom,msm8996-qusb2-phy";
> > - reg = <0x7411000 0x180>;
> > - #phy-cells = <0>;
> > -
> > - clocks = <&gcc GCC_USB_PHY_CFG_AHB2PHY_CLK>,
> > - <&gcc GCC_RX1_USB2_CLKREF_CLK>,
> > - clock-names = "cfg_ahb", "ref";
> > -
> > - vdda-pll-supply = <&pm8994_l12>;
> > - vdda-phy-dpdm-supply = <&pm8994_l24>;
> > -
> > - resets = <&gcc GCC_QUSB2PHY_PRIM_BCR>;
> > - nvmem-cells = <&qusb2p_hstx_trim>;
> > - };
>
> Reviewed-by: Matthias Kaehlcke <mka@...omium.org>
This second 'Reviewed-by' was actually intended for '[v4 2/8]
dt-bindings: phy: qcom,qusb2: Add compatibles for QUSB2 V2 phy and SC7180'.
I replied to the wrong mail after reviewing on patchwork.
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