From: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Andre Przywara <andre.przywara-5wv7dgnIgG8@public.gmane.org>
Cc: Maxime Ripard
<maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>,
Ulf Hansson <ulf.hansson-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
Chen-Yu Tsai <wens-jdAy2FN1RRM@public.gmane.org>,
Hans De Goede <hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Icenowy Zheng <icenowy-ymACFijhrKM@public.gmane.org>,
Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-mmc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH 2/5] drivers: mmc: sunxi: limit A64 MMC2 to 8K DMA buffer
Date: Wed, 4 Jan 2017 08:07:50 -0600 [thread overview]
Message-ID: <20170104140750.7qs4pvggwjdj5cma@rob-hp-laptop> (raw)
In-Reply-To: <1483398226-29321-3-git-send-email-andre.przywara-5wv7dgnIgG8@public.gmane.org>
On Mon, Jan 02, 2017 at 11:03:43PM +0000, Andre Przywara wrote:
> From: Maxime Ripard <maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
>
> Unlike the A64 user manual reports, the third MMC controller on the
> A64 (and the only one capable of 8-bit HS400 eMMC transfers) has a
> DMA buffer size limit of 8KB (much like the very old Allwinner SoCs).
> This does not affect the other two controllers, so introduce a new
> DT compatible string to let the driver use different settings for that
> particular device. This will also help to enable the high-speed transfer
> modes of that controller later.
>
> Signed-off-by: Maxime Ripard <maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
> Signed-off-by: Andre Przywara <andre.przywara-5wv7dgnIgG8@public.gmane.org>
> ---
> Documentation/devicetree/bindings/mmc/sunxi-mmc.txt | 1 +
> drivers/mmc/host/sunxi-mmc.c | 7 +++++++
> 2 files changed, 8 insertions(+)
Acked-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
next prev parent reply other threads:[~2017-01-04 14:07 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-02 23:03 [PATCH 0/5] arm64: sunxi: A64: enable MMC support Andre Przywara
[not found] ` <1483398226-29321-1-git-send-email-andre.przywara-5wv7dgnIgG8@public.gmane.org>
2017-01-02 23:03 ` [PATCH 1/5] drivers: mmc: sunxi: fix A64 calibration routine Andre Przywara
[not found] ` <1483398226-29321-2-git-send-email-andre.przywara-5wv7dgnIgG8@public.gmane.org>
2017-01-05 17:47 ` Maxime Ripard
2017-01-08 23:56 ` André Przywara
2017-01-02 23:03 ` [PATCH 2/5] drivers: mmc: sunxi: limit A64 MMC2 to 8K DMA buffer Andre Przywara
[not found] ` <1483398226-29321-3-git-send-email-andre.przywara-5wv7dgnIgG8@public.gmane.org>
2017-01-04 14:07 ` Rob Herring [this message]
2017-01-05 17:57 ` Maxime Ripard
2017-01-05 23:33 ` André Przywara
[not found] ` <87b26848-4f86-f2d2-3f82-db0937c572e2-5wv7dgnIgG8@public.gmane.org>
2017-01-10 14:06 ` Maxime Ripard
2017-01-02 23:03 ` [PATCH 3/5] arm64: dts: sun50i: add MMC nodes Andre Przywara
[not found] ` <1483398226-29321-4-git-send-email-andre.przywara-5wv7dgnIgG8@public.gmane.org>
2017-01-03 2:52 ` Chen-Yu Tsai
[not found] ` <CAGb2v65GJFTnQZtWHCS7CAtA+Dry94o77aakPLr938BpQksLog-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-01-03 10:48 ` André Przywara
[not found] ` <d4c2233c-95aa-4d72-1501-9ecb62f6cd82-5wv7dgnIgG8@public.gmane.org>
2017-01-03 13:28 ` Chen-Yu Tsai
[not found] ` <CAGb2v65GAvyDn1oMXy2cpOD5PFRoYYOk-VbsMPAX3SNFz2ukLg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-01-04 0:22 ` André Przywara
[not found] ` <6e90ad76-8f25-538a-433e-ab31e8fab526-5wv7dgnIgG8@public.gmane.org>
2017-01-04 2:37 ` Chen-Yu Tsai
2017-01-15 15:59 ` Dropping device tree pinmux nodes for GPIO usage (Was: [PATCH 3/5] arm64: dts: sun50i: add MMC nodes) Rask Ingemann Lambertsen
2017-01-17 8:33 ` Maxime Ripard
2017-01-05 17:50 ` [PATCH 3/5] arm64: dts: sun50i: add MMC nodes Maxime Ripard
2017-01-02 23:03 ` [PATCH 4/5] arm64: dts: Pine64: add MMC support Andre Przywara
2017-01-02 23:03 ` [PATCH 5/5] arm64: dts: add BananaPi-M64 support Andre Przywara
[not found] ` <1483398226-29321-6-git-send-email-andre.przywara-5wv7dgnIgG8@public.gmane.org>
2017-01-05 17:36 ` Maxime Ripard
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