linux-kernel - Re: [PATCH 1/2] dt-bindings: interconnect: Add generic qcom bindings

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Date:   Thu, 9 Jul 2020 08:35:27 -0700
From:   Matthias Kaehlcke <mka@...omium.org>
To:     Mike Tipton <mdtipton@...eaurora.org>
Cc:     georgi.djakov@...aro.org, bjorn.andersson@...aro.org,
        robh+dt@...nel.org, agross@...nel.org, linux-pm@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: interconnect: Add generic qcom bindings

On Mon, Jun 22, 2020 at 09:05:14PM -0700, Mike Tipton wrote:
> Add generic qcom interconnect bindings that are common across platforms. In
> particular, these include QCOM_ICC_TAG_* macros that clients can use when
> calling icc_set_tag().
> 
> Signed-off-by: Mike Tipton <mdtipton@...eaurora.org>
> ---
>  include/dt-bindings/interconnect/qcom,icc.h | 26 +++++++++++++++++++++
>  1 file changed, 26 insertions(+)
>  create mode 100644 include/dt-bindings/interconnect/qcom,icc.h
> 
> diff --git a/include/dt-bindings/interconnect/qcom,icc.h b/include/dt-bindings/interconnect/qcom,icc.h
> new file mode 100644
> index 000000000000..cd34f36daaaa
> --- /dev/null
> +++ b/include/dt-bindings/interconnect/qcom,icc.h
> @@ -0,0 +1,26 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
> +/*
> + * Copyright (c) 2020, The Linux Foundation. All rights reserved.
> + */
> +
> +#ifndef __DT_BINDINGS_INTERCONNECT_QCOM_ICC_H
> +#define __DT_BINDINGS_INTERCONNECT_QCOM_ICC_H
> +
> +/*
> + * The AMC bucket denotes constraints that are applied to hardware when
> + * icc_set_bw() completes, whereas the WAKE and SLEEP constraints are applied
> + * when the execution environment transitions between active and low power mode.
> + */
> +#define QCOM_ICC_BUCKET_AMC		0
> +#define QCOM_ICC_BUCKET_WAKE		1
> +#define QCOM_ICC_BUCKET_SLEEP		2
> +#define QCOM_ICC_NUM_BUCKETS		3
> +
> +#define QCOM_ICC_TAG_AMC		(1 << QCOM_ICC_BUCKET_AMC)
> +#define QCOM_ICC_TAG_WAKE		(1 << QCOM_ICC_BUCKET_WAKE)
> +#define QCOM_ICC_TAG_SLEEP		(1 << QCOM_ICC_BUCKET_SLEEP)
> +#define QCOM_ICC_TAG_ACTIVE_ONLY	(QCOM_ICC_TAG_AMC | QCOM_ICC_TAG_WAKE)
> +#define QCOM_ICC_TAG_ALWAYS		(QCOM_ICC_TAG_AMC | QCOM_ICC_TAG_WAKE |\
> +					 QCOM_ICC_TAG_SLEEP)
> +
> +#endif

Would it make sense to squash the two patches of this series into a
single patch? This would make it more evident that this was moved
from drivers/interconnect/qcom/icc-rpmh.h and avoid duplicate
definitions if only this patch was applied.