linux-kernel - Re: [PATCH v4 2/2] dt-bindings: clk: intel: Add bindings document & header file for CGU

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Message-Id: <20200131022541.3853C2067C@mail.kernel.org>
Date:   Thu, 30 Jan 2020 18:25:40 -0800
From:   Stephen Boyd <sboyd@...nel.org>
To:     Rahul Tanwar <rahul.tanwar@...ux.intel.com>,
        linux-clk@...r.kernel.org, mark.rutland@....com,
        mturquette@...libre.com, robh+dt@...nel.org, robh@...nel.org
Cc:     linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        andriy.shevchenko@...el.com, qi-ming.wu@...el.com,
        yixin.zhu@...ux.intel.com, cheol.yong.kim@...el.com,
        Rahul Tanwar <rahul.tanwar@...ux.intel.com>
Subject: Re: [PATCH v4 2/2] dt-bindings: clk: intel: Add bindings document & header file for CGU

Quoting Rahul Tanwar (2020-01-30 01:04:03)
> Clock generation unit(CGU) is a clock controller IP of Intel's Lightning
> Mountain(LGM) SoC. Add DT bindings include file and document for CGU clock
> controller driver of LGM.
> 
> Signed-off-by: Rahul Tanwar <rahul.tanwar@...ux.intel.com>
> ---

Please reorder this to be first instead of second in the series.

>  .../devicetree/bindings/clock/intel,cgu-lgm.yaml   |  40 +++++
>  include/dt-bindings/clock/intel,lgm-clk.h          | 165 +++++++++++++++++++++
>  2 files changed, 205 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/clock/intel,cgu-lgm.yaml
>  create mode 100644 include/dt-bindings/clock/intel,lgm-clk.h
> 
> diff --git a/Documentation/devicetree/bindings/clock/intel,cgu-lgm.yaml b/Documentation/devicetree/bindings/clock/intel,cgu-lgm.yaml
> new file mode 100644
> index 000000000000..e9649fe75435
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/intel,cgu-lgm.yaml
> @@ -0,0 +1,40 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/bindings/clock/intel,cgu-lgm.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Intel Lightning Mountain SoC's Clock Controller(CGU) Binding
> +
> +maintainers:
> +  - Rahul Tanwar <rahul.tanwar@...ux.intel.com>
> +
> +description: |
> +  Lightning Mountain(LGM) SoC's Clock Generation Unit(CGU) driver provides
> +  all means to access the CGU hardware module in order to generate a series
> +  of clocks for the whole system and individual peripherals.

Can you include a pointer to include/dt-bindings/clock/intel,lgm-clk.h?

> +
> +properties:
> +  compatible:
> +    const: intel,cgu-lgm
> +
> +  reg:
> +    maxItems: 1
> +
> +  '#clock-cells':
> +    const: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - '#clock-cells'
> +
> +examples:
> +  - |
> +    cgu: clock-controller@...00000 {
> +        compatible = "intel,cgu-lgm";
> +        reg = <0xe0200000 0x33c>;
> +        #clock-cells = <1>;
> +    };
> +
> +...
> diff --git a/include/dt-bindings/clock/intel,lgm-clk.h b/include/dt-bindings/clock/intel,lgm-clk.h
> new file mode 100644
> index 000000000000..d6797521d36a
> --- /dev/null
> +++ b/include/dt-bindings/clock/intel,lgm-clk.h
[...]
> +
> +/* PLL0CZ */
> +#define LGM_CLK_CM             25
> +#define LGM_CLK_IC             26
> +#define LGM_CLK_SDXC3          27
> +
> +/* PLL0B */
> +#define LGM_CLK_NGI            30
> +#define LGM_CLK_NOC4           31
> +#define LGM_CLK_SW             32
> +#define LGM_CLK_QSPI           33
> +#define LGM_CLK_CQEM           LGM_CLK_SW
> +#define LGM_CLK_EMMC5          LGM_CLK_NOC4
> +
> +/* PLL1 */
> +#define LGM_CLK_CT             35
> +#define LGM_CLK_DSP            36
> +#define LGM_CLK_VIF            37
> +
> +/* LJPLL3 */
> +#define LGM_CLK_CML            40
> +#define LGM_CLK_SERDES         41
> +#define LGM_CLK_POOL           42
> +#define LGM_CLK_PTP            43
> +
> +/* LJPLL4 */
> +#define LGM_CLK_PCIE           45
> +#define LGM_CLK_SATA           LGM_CLK_PCIE

What is with the aliases?