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From: Chen-Yu Tsai <wens@csie.org>
To: Ulf Hansson <ulf.hansson@linaro.org>,
	Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Chen-Yu Tsai <wens@csie.org>, Hans de Goede <hdegoede@redhat.com>,
	linux-mmc@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH 0/3] mmc: sunxi: Fix MMC DDR modes for Allwinner A80
Date: Sun, 29 May 2016 15:04:41 +0800	[thread overview]
Message-ID: <1464505484-3661-1-git-send-email-wens@csie.org> (raw)

Hi everyone,

This series fixes and re-enables eMMC HS-DDR support for Allwinner A80 SoC.
The issue with the original code was the mmc clock timings were incorrect,
and thus we had disabled HS-DDR on A80 for the previous release.

Patch 1 is a fix for mmc core. Arnd's patch to remove IS_ERR_VALUE replaced
it with an incorrect check on return values, thus blocking the code path
for HS-DDR and higher timing modes. This patch instead checks for a positive
return code, which is how mmc_select_bus_width indicates a success.

Patch 2 fixes the HS-DDR clock timings for the A80.

Patch 3 re-enables HS-DDR mode for the A80.


Regards
ChenYu

Chen-Yu Tsai (3):
  mmc: fix mmc mode selection for HS-DDR and higher
  mmc: sunxi: Fix DDR MMC timings for A80
  mmc: sunxi: Re-enable eMMC HS-DDR modes on Allwinner A80

 drivers/mmc/core/mmc.c       | 4 ++--
 drivers/mmc/host/sunxi-mmc.c | 9 ++-------
 2 files changed, 4 insertions(+), 9 deletions(-)

-- 
2.8.1

WARNING: multiple messages have this Message-ID (diff)
From: wens@csie.org (Chen-Yu Tsai)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 0/3] mmc: sunxi: Fix MMC DDR modes for Allwinner A80
Date: Sun, 29 May 2016 15:04:41 +0800	[thread overview]
Message-ID: <1464505484-3661-1-git-send-email-wens@csie.org> (raw)

Hi everyone,

This series fixes and re-enables eMMC HS-DDR support for Allwinner A80 SoC.
The issue with the original code was the mmc clock timings were incorrect,
and thus we had disabled HS-DDR on A80 for the previous release.

Patch 1 is a fix for mmc core. Arnd's patch to remove IS_ERR_VALUE replaced
it with an incorrect check on return values, thus blocking the code path
for HS-DDR and higher timing modes. This patch instead checks for a positive
return code, which is how mmc_select_bus_width indicates a success.

Patch 2 fixes the HS-DDR clock timings for the A80.

Patch 3 re-enables HS-DDR mode for the A80.


Regards
ChenYu

Chen-Yu Tsai (3):
  mmc: fix mmc mode selection for HS-DDR and higher
  mmc: sunxi: Fix DDR MMC timings for A80
  mmc: sunxi: Re-enable eMMC HS-DDR modes on Allwinner A80

 drivers/mmc/core/mmc.c       | 4 ++--
 drivers/mmc/host/sunxi-mmc.c | 9 ++-------
 2 files changed, 4 insertions(+), 9 deletions(-)

-- 
2.8.1

             reply	other threads:[~2016-05-29  7:04 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-05-29  7:04 Chen-Yu Tsai [this message]
2016-05-29  7:04 ` [PATCH 0/3] mmc: sunxi: Fix MMC DDR modes for Allwinner A80 Chen-Yu Tsai
2016-05-29  7:04 ` [PATCH 1/3] mmc: fix mmc mode selection for HS-DDR and higher Chen-Yu Tsai
2016-05-29  7:04   ` Chen-Yu Tsai
2016-05-31  9:30   ` Krzysztof Kozlowski
2016-05-31  9:30     ` Krzysztof Kozlowski
2016-06-01  1:25   ` Jaehoon Chung
2016-06-01  1:25     ` Jaehoon Chung
2016-06-01  2:36   ` Shawn Lin
2016-06-01  2:36     ` Shawn Lin
2016-06-01  9:19   ` Marcel Ziswiler
2016-06-01  9:19     ` Marcel Ziswiler
2016-06-01 18:58   ` Bjorn Andersson
2016-06-01 18:58     ` Bjorn Andersson
2016-06-02  8:08     ` Chen-Yu Tsai
2016-06-02  8:08       ` Chen-Yu Tsai
2016-06-02  8:31   ` Ulf Hansson
2016-06-02  8:31     ` Ulf Hansson
2016-06-02  8:31     ` Ulf Hansson
2016-06-02  9:35     ` Krzysztof Kozlowski
2016-06-02  9:35       ` Krzysztof Kozlowski
2016-06-02  9:35       ` Krzysztof Kozlowski
2016-06-02 15:01       ` Ulf Hansson
2016-06-02 15:01         ` Ulf Hansson
2016-06-02 15:01         ` Ulf Hansson
2016-05-29  7:04 ` [PATCH 2/3] mmc: sunxi: Fix DDR MMC timings for A80 Chen-Yu Tsai
2016-05-29  7:04   ` Chen-Yu Tsai
2016-05-30 11:34   ` Hans de Goede
2016-05-30 11:34     ` Hans de Goede
2016-05-30 12:59     ` Chen-Yu Tsai
2016-05-30 12:59       ` Chen-Yu Tsai
2016-05-30 15:38       ` Chen-Yu Tsai
2016-05-30 15:38         ` Chen-Yu Tsai
2016-05-30 18:05       ` Hans de Goede
2016-05-30 18:05         ` Hans de Goede
2016-05-29  7:04 ` [PATCH 3/3] mmc: sunxi: Re-enable eMMC HS-DDR modes on Allwinner A80 Chen-Yu Tsai
2016-05-29  7:04   ` Chen-Yu Tsai

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