[PATCH AUTOSEL 5.4 036/266] arm64: dts: armada-3720-turris-mox: forbid SDR104 on SDIO for FCC purposes

[Sasha Levin]

From: Marek BehÃn <marek.behun@xxxxxx>

[ Upstream commit 7a2c36b039d2343cc29fec6102da839477b8dc60 ]

Use sdhci-caps-mask to forbid SDR104 mode on the SDIO capable SDHCI
controller. Without this the device cannot pass electromagnetic
interference certifications.

Fixes: 7109d817db2e ("arm64: dts: marvell: add DTS for Turris Mox")
Signed-off-by: Marek BehÃn <marek.behun@xxxxxx>
Cc: Gregory CLEMENT <gregory.clement@xxxxxxxxxxx>
Signed-off-by: Gregory CLEMENT <gregory.clement@xxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 arch/arm64/boot/dts/marvell/armada-3720-turris-mox.dts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/marvell/armada-3720-turris-mox.dts b/arch/arm64/boot/dts/marvell/armada-3720-turris-mox.dts
index 5f350cc71a2f..01f66056d7d5 100644
--- a/arch/arm64/boot/dts/marvell/armada-3720-turris-mox.dts
+++ b/arch/arm64/boot/dts/marvell/armada-3720-turris-mox.dts
@@ -171,6 +171,8 @@ &sdhci1 {
 	marvell,pad-type = "sd";
 	vqmmc-supply = <&vsdio_reg>;
 	mmc-pwrseq = <&sdhci1_pwrseq>;
+	/* forbid SDR104 for FCC purposes */
+	sdhci-caps-mask = <0x2 0x0>;
 	status = "okay";
 };
 
-- 
2.25.1