From: Rob Herring <robh@kernel.org>
To: Henry Chen <henryc.chen@mediatek.com>
Cc: Viresh Kumar <vireshk@kernel.org>,
Stephen Boyd <sboyd@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
Ulf Hansson <ulf.hansson@linaro.org>,
Mark Rutland <mark.rutland@arm.com>,
Fan Chen <fan.chen@mediatek.com>,
Weiyi Lu <weiyi.lu@mediatek.com>,
James Liao <jamesjj.liao@mediatek.com>,
Kees Cook <keescook@chromium.org>,
linux-pm@vger.kernel.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC RESEND PATCH 1/7] dt-bindings: soc: Add DVFSRC driver bindings
Date: Fri, 11 Jan 2019 10:09:18 -0600 [thread overview]
Message-ID: <20190111160918.GA20480@bogus> (raw)
In-Reply-To: <1546438198-1677-2-git-send-email-henryc.chen@mediatek.com>
On Wed, Jan 02, 2019 at 10:09:52PM +0800, Henry Chen wrote:
> Document the binding for enabling DVFSRC on MediaTek SoC.
>
> Signed-off-by: Henry Chen <henryc.chen@mediatek.com>
> ---
> .../devicetree/bindings/soc/mediatek/dvfsrc.txt | 26 ++++++++++++++++++++++
> include/dt-bindings/soc/mtk,dvfsrc.h | 18 +++++++++++++++
> 2 files changed, 44 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/soc/mediatek/dvfsrc.txt
> create mode 100644 include/dt-bindings/soc/mtk,dvfsrc.h
>
> diff --git a/Documentation/devicetree/bindings/soc/mediatek/dvfsrc.txt b/Documentation/devicetree/bindings/soc/mediatek/dvfsrc.txt
> new file mode 100644
> index 0000000..402c885
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/soc/mediatek/dvfsrc.txt
> @@ -0,0 +1,26 @@
> +MediaTek DVFSRC Driver
Bindings are for h/w blocks, not drivers.
> +The Dynamic Voltage and Frequency Scaling Resource Collector (DVFSRC) is a
> +HW module which is used to collect all the requests from both software and
> +hardware and turn into the decision of minimum operating voltage and minimum
> +DRAM frequency to fulfill those requests.
Seems like the OPP table should be a child of this instead of where you
currently have it?
> +
> +Required Properties:
> +- compatible: Should be one of the following
> + - "mediatek,mt8183-dvfsrc": For MT8183 SoC
> +- reg: Address range of the DVFSRC unit
> +- dram_type: Refer to <include/dt-bindings/soc/mtk,dvfsrc.h> for the
> + different dram type support.
This information should come from the DDR controller or memory nodes
probably. And we already have some properties related to DDR type.
> +- clock-names: Must include the following entries:
> + "dvfsrc": DVFSRC module clock
> +- clocks: Must contain an entry for each entry in clock-names.
> +
> +Example:
> +
> + dvfsrc_top@10012000 {
Drop the '_top'. (Don't use '_' in node and property names).
> + compatible = "mediatek,mt8183-dvfsrc";
> + reg = <0 0x10012000 0 0x1000>;
> + clocks = <&infracfg CLK_INFRA_DVFSRC>;
> + clock-names = "dvfsrc";
> + dram_type = <MT8183_DVFSRC_OPP_LP4>;
> + };
> diff --git a/include/dt-bindings/soc/mtk,dvfsrc.h b/include/dt-bindings/soc/mtk,dvfsrc.h
> new file mode 100644
> index 0000000..60b3497
> --- /dev/null
> +++ b/include/dt-bindings/soc/mtk,dvfsrc.h
> @@ -0,0 +1,18 @@
> +/* SPDX-License-Identifier: GPL-2.0
> + *
> + * Copyright (c) 2018 MediaTek Inc.
> + */
> +
> +#ifndef _DT_BINDINGS_POWER_MTK_DVFSRC_H
> +#define _DT_BINDINGS_POWER_MTK_DVFSRC_H
> +
> +#define MT8183_DVFSRC_OPP_LP4 0
> +#define MT8183_DVFSRC_OPP_LP4X 1
> +#define MT8183_DVFSRC_OPP_LP3 2
> +
> +#define MT8183_DVFSRC_LEVEL_1 1
> +#define MT8183_DVFSRC_LEVEL_2 2
> +#define MT8183_DVFSRC_LEVEL_3 3
> +#define MT8183_DVFSRC_LEVEL_4 4
> +
> +#endif /* _DT_BINDINGS_POWER_MTK_DVFSRC_H */
> --
> 1.9.1
>
next prev parent reply other threads:[~2019-01-11 16:09 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-02 14:09 [RFC RESEND PATCH 0/7] Add driver for dvfsrc and add support for active state of scpsys on mt8183 Henry Chen
2019-01-02 14:09 ` [RFC RESEND PATCH 1/7] dt-bindings: soc: Add DVFSRC driver bindings Henry Chen
2019-01-11 16:09 ` Rob Herring [this message]
2019-02-18 4:55 ` Henry Chen
2019-03-20 8:52 ` Nicolas Boichat
2019-01-02 14:09 ` [RFC RESEND PATCH 2/7] dt-bindings: soc: Add opp table on scpsys bindings Henry Chen
2019-01-03 18:45 ` Rob Herring
2019-01-07 11:04 ` Henry Chen
2019-01-02 14:09 ` [RFC RESEND PATCH 3/7] soc: mediatek: add support for the performance state Henry Chen
2019-01-03 22:57 ` Stephen Boyd
2019-01-07 11:06 ` Henry Chen
2019-01-02 14:09 ` [RFC RESEND PATCH 4/7] arm64: dts: mt8183: add performance state support of scpsys Henry Chen
2019-01-03 4:47 ` Viresh Kumar
2019-01-03 14:16 ` Henry Chen
2019-01-02 14:09 ` [RFC RESEND PATCH 5/7] soc: mediatek: add header for mediatek SIP interface Henry Chen
2019-01-02 14:09 ` [RFC RESEND PATCH 6/7] soc: mediatek: add MT8183 dvfsrc support Henry Chen
2019-01-03 23:08 ` Stephen Boyd
2019-01-07 11:09 ` Henry Chen
2019-01-02 14:09 ` [RFC RESEND PATCH 7/7] arm64: dts: mt8183: add dvfsrc related nodes Henry Chen
2019-01-03 4:48 ` [RFC RESEND PATCH 0/7] Add driver for dvfsrc and add support for active state of scpsys on mt8183 Viresh Kumar
2019-01-03 14:31 ` Henry Chen
2019-01-03 22:53 ` Stephen Boyd
2019-01-07 11:04 ` Henry Chen
2019-01-07 16:34 ` Georgi Djakov
2019-01-09 3:08 ` Henry Chen
2019-01-10 9:39 ` Georgi Djakov
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