From: Hans de Goede <hdegoede@redhat.com>
To: Adrian Hunter <adrian.hunter@intel.com>,
Ulf Hansson <ulf.hansson@linaro.org>
Cc: Hans de Goede <hdegoede@redhat.com>,
"russianneuromancer @ ya . ru" <russianneuromancer@ya.ru>,
linux-mmc@vger.kernel.org
Subject: [PATCH 0/2] mmc: sdhci-acpi: Introduce device specific quirks, fix issues on 2 device models
Date: Wed, 8 Jan 2020 10:39:01 +0100 [thread overview]
Message-ID: <20200108093903.57620-1-hdegoede@redhat.com> (raw)
Hi Adrian,
I know you have sofar mostly resisted adding device specific (DMI based)
quirks to the sdhci-acpi.c driver and I agree with you that whenever
possible, those should be avoided.
But yesterday I was debugging an issue where using the microSD slot
causes the LCD panel of a tablet to go black. This turns out to be a
bug in the DSDT which gets triggered when using 1.8V modes, see the first
patch for details. In this case I really so no other option then disabling
1.8V modes and only doing so only on the affected device model.
Another issue which I had on my TODO list of things to fix is the Acer
SW5-012 version of the Acer Switch 10 models always reporting the microSD
as being write-protected. Here too I see no other option then a model
specific quirk, since some BYT devices may use a normal SD slot with
actual write-protect capabilities and we do not want to disable
write-protect checking everywhere just because it is broken on one model.
The workaround for this is the second patch in this series.
Regards,
Hans
next reply other threads:[~2020-01-08 9:39 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-08 9:39 Hans de Goede [this message]
2020-01-08 9:39 ` [PATCH 1/2] mmc: sdhci-acpi: Disable 1.8V modes on external microSD on Lenovo Miix 320 Hans de Goede
2020-01-15 12:57 ` Adrian Hunter
2020-01-15 13:31 ` Hans de Goede
2020-01-15 13:48 ` Adrian Hunter
2020-01-15 15:31 ` Hans de Goede
2020-01-16 7:59 ` Adrian Hunter
2020-01-16 11:05 ` [FSL P5020 P5040 PPC] Onboard SD card doesn't work anymore after the 'mmc-v5.4-2' updates Christian Zigotzky
2020-01-16 15:46 ` Ulf Hansson
2020-01-20 9:17 ` Christian Zigotzky
2020-01-20 11:18 ` Ulf Hansson
2020-01-24 11:42 ` Michael Ellerman
2020-01-25 13:26 ` Christian Zigotzky
2020-01-28 11:55 ` Michael Ellerman
2020-01-28 7:58 ` [PASEMI PA6T PPC] Onboard CF card device with new SanDisk High (>8G) CF cards Christian Zigotzky
2020-01-28 8:08 ` Christoph Hellwig
2020-01-28 14:16 ` Rob Herring
2020-01-28 14:48 ` Christian Zigotzky
2020-01-16 13:26 ` [PATCH 1/2] mmc: sdhci-acpi: Disable 1.8V modes on external microSD on Lenovo Miix 320 Hans de Goede
2020-01-17 9:16 ` Adrian Hunter
2020-03-06 14:07 ` Hans de Goede
2020-03-06 14:10 ` Hans de Goede
2020-01-08 9:39 ` [PATCH 2/2] mmc: sdhci-acpi: Disable write protect detection on Acer Aspire Switch 10 (SW5-012) Hans de Goede
2020-01-15 12:51 ` [PATCH 0/2] mmc: sdhci-acpi: Introduce device specific quirks, fix issues on 2 device models Adrian Hunter
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