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From: Maxime Ripard <maxime.ripard@bootlin.com>
To: Chen-Yu Tsai <wens@csie.org>
Cc: Ulf Hansson <ulf.hansson@linaro.org>,
	linux-mmc@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-sunxi@googlegroups.com,
	Chris Blake <chrisrblake93@gmail.com>,
	stable@vger.kernel.org
Subject: Re: [PATCH 1/3] mmc: sunxi: Disable HS-DDR mode for H5 eMMC controller by default
Date: Mon, 4 Feb 2019 10:32:14 +0100	[thread overview]
Message-ID: <20190204093214.7zbomq5cddacdrmj@flea> (raw)
In-Reply-To: <20190203155628.16767-2-wens@csie.org>

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On Sun, Feb 03, 2019 at 11:56:26PM +0800, Chen-Yu Tsai wrote:
> Some H5 boards seem to not have proper trace lengths for eMMC to be able
> to use the default setting for the delay chains under HS-DDR mode. These
> include the Bananapi M2+ H5 and NanoPi NEO Core2. However the Libre
> Computer ALL-H3-CC-H5 works just fine.
> 
> For the H5 (at least for now), default to not enabling HS-DDR modes in
> the driver, and expect the device tree to signal HS-DDR capability on
> boards that work.
> 
> Reported-by: Chris Blake <chrisrblake93@gmail.com>
> Fixes: 07bafc1e3536 ("mmc: sunxi: Use new timing mode for A64 eMMC controller")
> Cc: <stable@vger.kernel.org>
> Signed-off-by: Chen-Yu Tsai <wens@csie.org>

Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>

Maxime

-- 
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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  reply	other threads:[~2019-02-04  9:32 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-03 15:56 mmc: sunxi: Fix eMMC usage on H5 boards Chen-Yu Tsai
2019-02-03 15:56 ` [PATCH 1/3] mmc: sunxi: Disable HS-DDR mode for H5 eMMC controller by default Chen-Yu Tsai
2019-02-04  9:32   ` Maxime Ripard [this message]
2019-02-03 15:56 ` [PATCH 2/3] mmc: sunxi: Filter out unsupported modes declared in the device tree Chen-Yu Tsai
2019-02-04  9:34   ` Maxime Ripard
2019-02-04 10:16     ` Chen-Yu Tsai
2019-02-04 13:41       ` Maxime Ripard
2019-02-05  8:42         ` Chen-Yu Tsai
2019-02-05  9:51           ` Maxime Ripard
2019-02-03 15:56 ` [PATCH 3/3] arm64: dts: allwinner: h5: libretech-all-h3-cc: Mark eMMC HS-DDR 3.3V capable Chen-Yu Tsai
2019-02-03 15:59 ` [PATCH 0/3] mmc: sunxi: Fix eMMC usage on H5 boards Chen-Yu Tsai

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