linux-kernel - Re: [PATCH 1/2] clk: qcom: Add DT bindings for ipq6018 apss clock controller

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Date:   Thu, 27 Feb 2020 16:08:19 +0530
From:   Sibi Sankar <sibis@...eaurora.org>
To:     Sivaprakash Murugesan <sivaprak@...eaurora.org>
Cc:     agross@...nel.org, bjorn.andersson@...aro.org,
        mturquette@...libre.com, sboyd@...nel.org, robh+dt@...nel.org,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm-owner@...r.kernel.org
Subject: Re: [PATCH 1/2] clk: qcom: Add DT bindings for ipq6018 apss clock
 controller

Hey Sivaprakash,

On 2020-02-27 15:25, Sivaprakash Murugesan wrote:
> add dt-binding for ipq6018 apss clock controller
> 
> Signed-off-by: Sivaprakash Murugesan <sivaprak@...eaurora.org>
> ---
>  .../devicetree/bindings/clock/qcom,apsscc.yaml     | 58 
> ++++++++++++++++++++++
>  include/dt-bindings/clock/qcom,apss-ipq6018.h      | 26 ++++++++++
>  2 files changed, 84 insertions(+)
>  create mode 100644 
> Documentation/devicetree/bindings/clock/qcom,apsscc.yaml
>  create mode 100644 include/dt-bindings/clock/qcom,apss-ipq6018.h
> 
> diff --git a/Documentation/devicetree/bindings/clock/qcom,apsscc.yaml
> b/Documentation/devicetree/bindings/clock/qcom,apsscc.yaml
> new file mode 100644
> index 0000000..7433721
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/qcom,apsscc.yaml
> @@ -0,0 +1,58 @@
> +# SPDX-License-Identifier: GPL-2.0-only

Dual license

> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/bindings/clock/qcom,apsscc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm IPQ6018 APSS Clock Controller Binding
> +
> +maintainers:
> +  - Stephen Boyd <sboyd@...nel.org>
> +
> +description: |
> +  Qualcomm IPQ6018 APSS clock control module which supports the clocks 
> with
> +  frequencies above 800Mhz.
> +
> +properties:
> +  compatible :
> +    const: qcom,apss-ipq6018

Please use qcom,<chip>-<device>
instead.

> +
> +  clocks:
> +    description: clocks required for this controller.
> +    maxItems: 4
> +
> +  clock-names:
> +    description: clock output names of required clocks.
> +    maxItems: 4
> +
> +  '#clock-cells':
> +    const: 1
> +
> +  '#reset-cells':
> +    const: 1
> +
> +  reg:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - '#clock-cells'
> +  - '#reset-cells'
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +      #include <dt-bindings/clock/qcom,gcc-ipq6018.h>
> +      apss_clk: qcom,apss_clk@...1000 {
> +            compatible = "qcom,apss-ipq6018";
> +            clocks = <&xo>, <&gcc GPLL0>,
> +                        <&gcc GPLL2>, <&gcc GPLL4>;
> +            clock-names = "xo", "gpll0",
> +                         "gpll2", "gpll4";
> +            reg = <0xb11100c 0x5ff4>;
> +            #clock-cells = <1>;
> +            #reset-cells = <1>;
> +      };
> +...
> diff --git a/include/dt-bindings/clock/qcom,apss-ipq6018.h
> b/include/dt-bindings/clock/qcom,apss-ipq6018.h
> new file mode 100644
> index 0000000..ed9d7d8
> --- /dev/null
> +++ b/include/dt-bindings/clock/qcom,apss-ipq6018.h
> @@ -0,0 +1,26 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.
> + *
> + * Permission to use, copy, modify, and/or distribute this software 
> for any
> + * purpose with or without fee is hereby granted, provided that the 
> above
> + * copyright notice and this permission notice appear in all copies.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL 
> WARRANTIES
> + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
> + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE 
> FOR
> + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY 
> DAMAGES
> + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN 
> AN
> + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 
> OUT OF
> + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

^^ is not needed just the SPDX
license identifier is enough.

> + */
> +
> +#ifndef _DT_BINDINGS_CLOCK_QCA_APSS_IPQ6018_H
> +#define _DT_BINDINGS_CLOCK_QCA_APSS_IPQ6018_H
> +
> +#define APSS_PLL_EARLY				0
> +#define APSS_PLL				1
> +#define APCS_ALIAS0_CLK_SRC			2
> +#define APCS_ALIAS0_CORE_CLK			3
> +
> +#endif

-- 
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