[PATCH v3 19/20] arm: dts: k3-am654-base-board: Limit Sd card to High speed modes

Aswath Govindraju a-govindraju at ti.com
Thu Jan 21 13:40:51 CET 2021

From: Faiz Abbas <faiz_abbas at ti.com>

There's an issue with the base board in which the power cycle
circuit takes way longer to power down than expected by mmc core.
code. This prevents the card from enumerating in UHS modes.

Disable UHS modes for this board until a new board revision fixes
the issue.

Signed-off-by: Faiz Abbas <faiz_abbas at ti.com>
Signed-off-by: Aswath Govindraju <a-govindraju at ti.com>
 arch/arm/dts/k3-am654-base-board.dts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/dts/k3-am654-base-board.dts b/arch/arm/dts/k3-am654-base-board.dts
index 33a1b9fdc4b7..830526a1e473 100644
--- a/arch/arm/dts/k3-am654-base-board.dts
+++ b/arch/arm/dts/k3-am654-base-board.dts
@@ -144,6 +144,7 @@
 	pinctrl-names = "default";
 	pinctrl-0 = <&main_mmc1_pins_default>;
 	ti,driver-strength-ohm = <50>;
+	sdhci-caps-mask = <0x7 0x0>;

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