linux-kernel - Re: [PATCH 1/2] dt-bindings: clock: Introduce QCOM Video clock bindings

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Date:   Tue, 1 May 2018 08:50:54 -0500
From:   Rob Herring <robh@...nel.org>
To:     Amit Nischal <anischal@...eaurora.org>
Cc:     Stephen Boyd <sboyd@...eaurora.org>,
        Michael Turquette <mturquette@...libre.com>,
        Andy Gross <andy.gross@...aro.org>,
        David Brown <david.brown@...aro.org>,
        Rajendra Nayak <rnayak@...eaurora.org>,
        Odelu Kukatla <okukatla@...eaurora.org>,
        Taniya Das <tdas@...eaurora.org>,
        linux-arm-msm@...r.kernel.org, linux-soc@...r.kernel.org,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: clock: Introduce QCOM Video clock
 bindings

On Tue, Apr 24, 2018 at 07:02:50PM +0530, Amit Nischal wrote:
> Add device tree bindings for video clock controller for Qualcomm
> Technology Inc's SoCs.
> 
> Signed-off-by: Amit Nischal <anischal@...eaurora.org>
> ---
>  .../devicetree/bindings/clock/qcom,videocc.txt     | 18 ++++++++++++++++
>  include/dt-bindings/clock/qcom,videocc-sdm845.h    | 25 ++++++++++++++++++++++
>  2 files changed, 43 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/clock/qcom,videocc.txt
>  create mode 100644 include/dt-bindings/clock/qcom,videocc-sdm845.h
> 
> diff --git a/Documentation/devicetree/bindings/clock/qcom,videocc.txt b/Documentation/devicetree/bindings/clock/qcom,videocc.txt
> new file mode 100644
> index 0000000..1c23b41
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/qcom,videocc.txt
> @@ -0,0 +1,18 @@
> +Qualcomm Video Clock & Reset Controller Binding
> +-----------------------------------------------
> +
> +Required properties :
> +- compatible : shall contain "qcom,videocc-sdm845"

'<vendor>,<soc>-<block>' is the preferred order. 

Every single QCom binding... Can someone spread the word in QCom.

> +- reg : shall contain base register location and length
> +- #clock-cells : shall contain 1
> +- #reset-cells : shall contain 1
> +- #power-domain-cells : shall contain 1

No header definitions for resets and power-domain? There's no 
requirement to have headers, but the binding should be complete even if 
you don't have a driver yet.

> +
> +Example:
> +	videocc: qcom,videocc@...0000 {

clock-controller@...

> +		compatible = "qcom,videocc-sdm845";
> +		reg = <0xab00000 0x10000>;
> +		#clock-cells = <1>;
> +		#reset-cells = <1>;
> +		#power-domain-cells = <1>;
> +	};
> diff --git a/include/dt-bindings/clock/qcom,videocc-sdm845.h b/include/dt-bindings/clock/qcom,videocc-sdm845.h
> new file mode 100644
> index 0000000..f5f7599
> --- /dev/null
> +++ b/include/dt-bindings/clock/qcom,videocc-sdm845.h
> @@ -0,0 +1,25 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/* Copyright (c) 2016-2018, The Linux Foundation. All rights reserved. */
> +
> +#ifndef _DT_BINDINGS_CLK_MSM_VIDEO_CC_SDM845_H
> +#define _DT_BINDINGS_CLK_MSM_VIDEO_CC_SDM845_H
> +
> +#define VIDEO_CC_APB_CLK			0
> +#define VIDEO_CC_AT_CLK				1
> +#define VIDEO_CC_QDSS_TRIG_CLK			2
> +#define VIDEO_CC_QDSS_TSCTR_DIV8_CLK		3
> +#define VIDEO_CC_VCODEC0_AXI_CLK		4
> +#define VIDEO_CC_VCODEC0_CORE_CLK		5
> +#define VIDEO_CC_VCODEC1_AXI_CLK		6
> +#define VIDEO_CC_VCODEC1_CORE_CLK		7
> +#define VIDEO_CC_VENUS_AHB_CLK			8
> +#define VIDEO_CC_VENUS_CLK_SRC			9
> +#define VIDEO_CC_VENUS_CTL_AXI_CLK		10
> +#define VIDEO_CC_VENUS_CTL_CORE_CLK		11
> +#define VIDEO_PLL0				12
> +
> +#define VENUS_GDSC				0
> +#define VCODEC0_GDSC				1
> +#define VCODEC1_GDSC				2
> +
> +#endif
> --
> QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
> of Code Aurora Forum, hosted by The Linux Foundation
> 
> --
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