From: Marek Behún <marek.behun@nic.cz>
Date: Thu, 30 Apr 2020 23:11:44 +0000 (+0200)
Subject: arm64: dts: armada-3720-turris-mox: forbid SDR104 on SDIO for FCC purposes
X-Git-Tag: v5.7.6~428
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=da5e18770052fd2fbc0f0e76dab699123c676df7;p=thirdparty%2Fkernel%2Fstable.git

arm64: dts: armada-3720-turris-mox: forbid SDR104 on SDIO for FCC purposes

[ 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 Behún <marek.behun@nic.cz>
Cc: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

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 bb42d1e6a4e92..47fee66c70cbc 100644
--- a/arch/arm64/boot/dts/marvell/armada-3720-turris-mox.dts
+++ b/arch/arm64/boot/dts/marvell/armada-3720-turris-mox.dts
@@ -179,6 +179,8 @@
 	marvell,pad-type = "sd";
 	vqmmc-supply = <&vsdio_reg>;
 	mmc-pwrseq = <&sdhci1_pwrseq>;
+	/* forbid SDR104 for FCC purposes */
+	sdhci-caps-mask = <0x2 0x0>;
 	status = "okay";
 };