linux-kernel - RE: [PATCH v7 06/10] dt-bindings: phy: Document Samsung UFS PHY bindings

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Date:   Sat, 9 May 2020 06:06:10 +0530
From:   "Alim Akhtar" <alim.akhtar@...sung.com>
To:     "'Rob Herring'" <robh@...nel.org>
Cc:     <devicetree@...r.kernel.org>, <linux-scsi@...r.kernel.org>,
        <krzk@...nel.org>, <avri.altman@....com>,
        <martin.petersen@...cle.com>, <kwmad.kim@...sung.com>,
        <stanley.chu@...iatek.com>, <cang@...eaurora.org>,
        <linux-samsung-soc@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v7 06/10] dt-bindings: phy: Document Samsung UFS PHY
 bindings

Hi Rob

> -----Original Message-----
> From: Rob Herring <robh@...nel.org>
> Sent: 05 May 2020 21:26
> To: Alim Akhtar <alim.akhtar@...sung.com>
> Cc: devicetree@...r.kernel.org; linux-scsi@...r.kernel.org; krzk@...nel.org;
> avri.altman@....com; martin.petersen@...cle.com;
> kwmad.kim@...sung.com; stanley.chu@...iatek.com;
> cang@...eaurora.org; linux-samsung-soc@...r.kernel.org; linux-arm-
> kernel@...ts.infradead.org; linux-kernel@...r.kernel.org
> Subject: Re: [PATCH v7 06/10] dt-bindings: phy: Document Samsung UFS PHY
> bindings
> 
> On Sun, Apr 26, 2020 at 11:00:20PM +0530, Alim Akhtar wrote:
> > This patch documents Samsung UFS PHY device tree bindings
> >
> > Signed-off-by: Alim Akhtar <alim.akhtar@...sung.com>
> > Tested-by: Paweł Chmiel <pawel.mikolaj.chmiel@...il.com>
> > ---
> >  .../bindings/phy/samsung,ufs-phy.yaml         | 74 +++++++++++++++++++
> >  1 file changed, 74 insertions(+)
> >  create mode 100644
> > Documentation/devicetree/bindings/phy/samsung,ufs-phy.yaml
> >
> > diff --git
> > a/Documentation/devicetree/bindings/phy/samsung,ufs-phy.yaml
> > b/Documentation/devicetree/bindings/phy/samsung,ufs-phy.yaml
> > new file mode 100644
> > index 000000000000..352d5dda320d
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/phy/samsung,ufs-phy.yaml
> > @@ -0,0 +1,74 @@
> > +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause %YAML 1.2
> > +---
> > +$id:
> > +https://protect2.fireeye.com/url?k=5c35df0a-01ffeabd-5c345445-0cc47a3
> > +003e8-
> aa6c980dab2ba33a&q=1&u=http%3A%2F%2Fdevicetree.org%2Fschemas%2F
> > +phy%2Fsamsung%2Cufs-phy.yaml%23
> > +$schema:
> > +https://protect2.fireeye.com/url?k=9734fc5e-cafec9e9-97357711-0cc47a3
> > +003e8-
> 79d176b992774339&q=1&u=http%3A%2F%2Fdevicetree.org%2Fmeta-schem
> > +as%2Fcore.yaml%23
> > +
> > +title: Samsung SoC series UFS PHY Device Tree Bindings
> > +
> > +maintainers:
> > +  - Alim Akhtar <alim.akhtar@...sung.com>
> > +
> > +properties:
> > +  "#phy-cells":
> > +    const: 0
> > +
> > +  compatible:
> > +    enum:
> > +      - samsung,exynos7-ufs-phy
> > +
> > +  reg:
> > +    maxItems: 1
> > +    description: PHY base register address
> 
> Can drop the description. Doesn't add anything special.
> 
> > +
> > +  reg-names:
> > +    items:
> > +      - const: phy-pma
> > +
> > +  clocks:
> > +    items:
> > +      - description: PLL reference clock
> > +      - description: symbol clock for input symbol ( rx0-ch0 symbol clock)
> > +      - description: symbol clock for input symbol ( rx1-ch1 symbol clock)
> > +      - description: symbol clock for output symbol ( tx0 symbol
> > + clock)
> > +
> > +  clock-names:
> > +    items:
> > +      - const: ref_clk
> > +      - const: rx1_symbol_clk
> > +      - const: rx0_symbol_clk
> > +      - const: tx0_symbol_clk
> > +
> > +  samsung,pmu-syscon:
> > +    $ref: '/schemas/types.yaml#/definitions/phandle'
> > +    description: phandle for PMU system controller interface, used to
> > +                 control pmu registers bits for ufs m-phy
> > +
> > +required:
> > +  - "#phy-cells"
> > +  - compatible
> > +  - reg
> > +  - reg-names
> > +  - clocks
> > +  - clock-names
> > +  - samsung,pmu-syscon
> 
> Add:
> 
> additionalProperties: false
> 
> With that,
> 
Will update the documentation as per your suggestion

> Reviewed-by: Rob Herring <robh@...nel.org>
>
Thanks for review comments. After fixing, will add your review tag.
 
> > +
> > +examples:
> > +  - |
> > +    #include <dt-bindings/clock/exynos7-clk.h>
> > +
> > +    ufs_phy: ufs-phy@...71800 {
> > +        compatible = "samsung,exynos7-ufs-phy";
> > +        reg = <0x15571800 0x240>;
> > +        reg-names = "phy-pma";
> > +        samsung,pmu-syscon = <&pmu_system_controller>;
> > +        #phy-cells = <0>;
> > +        clocks = <&clock_fsys1 SCLK_COMBO_PHY_EMBEDDED_26M>,
> > +                 <&clock_fsys1 PHYCLK_UFS20_RX1_SYMBOL_USER>,
> > +                 <&clock_fsys1 PHYCLK_UFS20_RX0_SYMBOL_USER>,
> > +                 <&clock_fsys1 PHYCLK_UFS20_TX0_SYMBOL_USER>;
> > +        clock-names = "ref_clk", "rx1_symbol_clk",
> > +                      "rx0_symbol_clk", "tx0_symbol_clk";
> > +
> > +    };
> > +...
> > --
> > 2.17.1
> >