ARM: dts: stm32: Enable internal pull-ups for SDMMC1 on DHCOM SoM

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The default state of SD bus and clock line is logical HI. SD card IO is
open-drain and pulls the bus lines LO. Always enable the SD bus pull ups
to guarantee this behavior on DHCOM SoM. Note that on SoMs with SD bus
voltage level shifter, the pull ups are built into the level shifter,
however that has no negative impact.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Patrice Chotard <patrice.chotard@st.com>
Cc: Patrick Delaunay <patrick.delaunay@st.com>
Cc: linux-stm32@st-md-mailman.stormreply.com
To: linux-arm-kernel@lists.infradead.org
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>

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Marek Vasut 2020-12-01 12:14:40 +01:00 • committed by Alexandre Torgue

parent 83d4112240

commit 7cd8567d98

1 changed files with 14 additions and 0 deletions

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arch/arm/boot/dts/stm32mp15xx-dhcom-som.dtsi

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