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From: Ulf Hansson <ulf.hansson@linaro.org>
To: Rob Herring <robh@kernel.org>
Cc: Jaehoon Chung <jh80.chung@samsung.com>,
	Shawn Lin <shawn.lin@rock-chips.com>,
	linux-mmc <linux-mmc@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Doug Anderson <dianders@chromium.org>,
	"open list:ARM/Rockchip SoC..."
	<linux-rockchip@lists.infradead.org>,
	"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>
Subject: Re: [RFC PATCH 1/4] Documentation: mmc: add description for new caps
Date: Wed, 22 Jun 2016 14:30:22 +0200	[thread overview]
Message-ID: <CAPDyKFquaUOUM+8UYBZhq=t0n6+v+cbTy8FotjYyysi6EGHx3A@mail.gmail.com> (raw)
In-Reply-To: <20160608204848.GA3368@rob-hp-laptop>

On 8 June 2016 at 22:48, Rob Herring <robh@kernel.org> wrote:
> On Wed, Jun 08, 2016 at 04:20:21PM +0800, Shawn Lin wrote:
>> Let's add some basic description for cap-no-sdio,
>> cap-no-sd and cap-no-mmc.
>
> This doesn't say why.
>
> If you know what is there, then there's a better way to do this. Look at
> the child nodes because chances are if you have something soldered down
> like SDIO or eMMC, then you have a child node already for resets,
> regulators, etc.
>

According to patch4, this is a description of the mmc controller,
perhaps together with some limitations as per SoC/platform and thus
has nothing to do with the card.

I have seen several drivers, which needs to validate every single
piece of command to avoid execute those it cannot support.

So, I personally thinks these new DT bindings would be nice to add.

Kind regards
Uffe

  reply	other threads:[~2016-06-22 12:30 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-06-08  8:19 [RFC PATCH 0/4] Introduce new caps to improve the card's init sequence Shawn Lin
2016-06-08  8:20 ` [RFC PATCH 1/4] Documentation: mmc: add description for new caps Shawn Lin
2016-06-08 20:48   ` Rob Herring
2016-06-22 12:30     ` Ulf Hansson [this message]
2016-06-22 15:06   ` Doug Anderson
2016-06-23  1:29     ` Shawn Lin
2016-06-23  4:33       ` Doug Anderson
2016-06-08  8:20 ` [RFC PATCH 2/4] mmc: core: expose MMC_CAP2_NO_SDIO to dt-binding Shawn Lin
2016-06-08  8:20 ` [RFC PATCH 3/4] mmc: core: add cap-no-sd and cap-no-mmc properties Shawn Lin
2016-06-08  8:22 ` [RFC PATCH 4/4] mmc: core: improve initialization flow Shawn Lin
2016-06-22 12:37 ` [RFC PATCH 0/4] Introduce new caps to improve the card's init sequence Ulf Hansson
2016-06-23  1:35   ` Shawn Lin

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