linux-kernel - Re: [PATCH 2/8] soc: Add MediaTek pericfg controller support

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Message-ID: <20150120161555.GH15924@leverpostej>
Date:	Tue, 20 Jan 2015 16:15:55 +0000
From:	Mark Rutland <mark.rutland@....com>
To:	Sascha Hauer <s.hauer@...gutronix.de>
Cc:	Olof Johansson <olof@...om.net>, Arnd Bergmann <arnd@...db.de>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Mark Brown <broonie@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Rob Herring <robh+dt@...nel.org>,
	Matthias Brugger <matthias.bgg@...il.com>,
	Eddie Huang <eddie.huang@...iatek.com>,
	Lee Jones <lee.jones@...aro.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 2/8] soc: Add MediaTek pericfg controller support

On Tue, Jan 20, 2015 at 09:47:05AM +0000, Sascha Hauer wrote:
> This adds support for the MediaTek pericfg controller found
> on the MT8135/MT8173 SoCs. The pericfg controller contains
> miscellaneous registers for controlling peripheral resets and
> clocks.
> 
> Signed-off-by: Sascha Hauer <s.hauer@...gutronix.de>
> ---
>  .../devicetree/bindings/soc/mediatek/pericfg.txt      | 19 +++++++++++++++++++
>  drivers/soc/mediatek/Kconfig                          | 10 ++++++++++
>  drivers/soc/mediatek/Makefile                         |  1 +
>  drivers/soc/mediatek/mtk-pericfg.c                    |  1 -
>  4 files changed, 30 insertions(+), 1 deletion(-)
>  create mode 100644 Documentation/devicetree/bindings/soc/mediatek/pericfg.txt
> 
> diff --git a/Documentation/devicetree/bindings/soc/mediatek/pericfg.txt b/Documentation/devicetree/bindings/soc/mediatek/pericfg.txt
> new file mode 100644
> index 0000000..81d1aee
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/soc/mediatek/pericfg.txt
> @@ -0,0 +1,19 @@
> +MediaTek pericfg Controller
> +
> +The pericfg controller contains miscellaneous registers for controlling
> +clocks, resets and bus settings.
> +
> +Required properties:
> +- compatible: must be one of:
> +	mediatek,mt8135-pericfg
> +	mediatek,mt8173-pericfg
> +- reg: Address range for the pericfg controller
> +
> +Example:
> +
> +	pericfg: pericfg@...03000 {
> +		#reset-cells = <1>;
> +		#clock-cells = <1>;
> +		compatible = "mediatek,mt8135-pericfg";
> +		reg = <0 0x10003000 0 0x1000>;
> +	};

This looks identical to the infracfg (same address too). Is that
deliberate?

Mark.

> diff --git a/drivers/soc/mediatek/Kconfig b/drivers/soc/mediatek/Kconfig
> index 3ad39fe..9bdb88f 100644
> --- a/drivers/soc/mediatek/Kconfig
> +++ b/drivers/soc/mediatek/Kconfig
> @@ -10,3 +10,13 @@ config MTK_INFRACFG
>  	  contains several miscellaneous registers for clock, reset and bus
>  	  settings. Say yes here if you want to run your kernel on one of these
>  	  SoCs.
> +
> +config MTK_PERICFG
> +	tristate "MediaTek pericfg controller support"
> +	depends on ARCH_MEDIATEK || COMPILE_TEST
> +	select REGMAP
> +	help
> +	  The MediaTek pericfg controller found on MT8135 and MT8173 SoCs
> +	  contains several miscellaneous registers for clock, reset and bus
> +	  settings. Say yes here if you want to run your kernel on one of these
> +	  SoCs.
> diff --git a/drivers/soc/mediatek/Makefile b/drivers/soc/mediatek/Makefile
> index dbeb627..e67be7c 100644
> --- a/drivers/soc/mediatek/Makefile
> +++ b/drivers/soc/mediatek/Makefile
> @@ -1 +1,2 @@
>  obj-$(CONFIG_MTK_INFRACFG) += mtk-infracfg.o
> +obj-$(CONFIG_MTK_PERICFG) += mtk-pericfg.o
> diff --git a/drivers/soc/mediatek/mtk-pericfg.c b/drivers/soc/mediatek/mtk-pericfg.c
> index b7ee902..aa9a7eb 100644
> --- a/drivers/soc/mediatek/mtk-pericfg.c
> +++ b/drivers/soc/mediatek/mtk-pericfg.c
> @@ -1,6 +1,5 @@
>  /*
>   * Copyright (c) 2014 MediaTek Inc.
> - * Author: Flora Fu <flora.fu@...iatek.com>
>   *
>   * This program is free software; you can redistribute it and/or modify
>   * it under the terms of the GNU General Public License version 2 as
> -- 
> 2.1.4
> 
> 
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
> 
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