linux-kernel - Re: [PATCH v3 2/2] reset: add a SYSCON based reset driver

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Date:	Wed, 15 Jun 2016 11:51:01 -0500
From:	Suman Anna <s-anna@...com>
To:	"Andrew F. Davis" <afd@...com>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>
CC:	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 2/2] reset: add a SYSCON based reset driver

Hi Andrew,

On 06/01/2016 01:41 PM, Andrew F. Davis wrote:
> Add a reset-controller driver for performing reset management of
> various devices present on the SoC, with the reset registers shared
> between devices in a common register memory space. This driver uses
> the syscon/regmap frameworks to actually implement the various reset
> functionalities needed by the reset consumer devices.
> 
> Signed-off-by: Andrew F. Davis <afd@...com>
> [s-anna@...com: add documentation, syscon name change]
> Signed-off-by: Suman Anna <s-anna@...com>
> ---
>  drivers/reset/Kconfig        |  10 ++
>  drivers/reset/Makefile       |   1 +
>  drivers/reset/reset-syscon.c | 289 +++++++++++++++++++++++++++++++++++++++++++
>  3 files changed, 300 insertions(+)
>  create mode 100644 drivers/reset/reset-syscon.c
> 
> diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig
> index 0b2733d..73072e2 100644
> --- a/drivers/reset/Kconfig
> +++ b/drivers/reset/Kconfig
> @@ -15,5 +15,15 @@ menuconfig RESET_CONTROLLER
>  config RESET_OXNAS
>  	bool
>  
> +config SYSCON_RESET
> +	tristate "SYSCON Reset Driver"
> +	depends on RESET_CONTROLLER

Please add a depends on HAS_IOMEM here that you seem to have missed from
our local patches.

regards
Suman

> +	select MFD_SYSCON
> +	help
> +	  This enables the reset driver support for devices with memory-mapped
> +	  reset registers as part of a syscon device node. If you wish to use
> +	  the reset framework for such memory-mapped devices, say Y here.
> +	  Otherwise, say N.
> +