Commit aecff98c authored Jul 13, 2021 by Oleksandr Suvorov Committed by Greg Kroah-Hartman Aug 12, 2021

ARM: dts: colibri-imx6ull: limit SDIO clock to 25MHz



[ Upstream commit 828db68f4ff1ab6982a36a56522b585160dc8c8e ]

NXP and AzureWave don't recommend using SDIO bus mode 3.3V@50MHz due
to noise affecting the wireless throughput. Colibri iMX6ULL uses only
3.3V signaling for Wi-Fi module AW-CM276NF.

Limit the SDIO Clock on Colibri iMX6ULL to 25MHz.

Fixes: c2e4987e ("ARM: dts: imx6ull: add Toradex Colibri iMX6ULL support")
Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent c3990733

arch/arm/boot/dts/imx6ull-colibri-wifi.dtsi

+1 −0

Original line number	Diff line number	Diff line
		@@ -43,6 +43,7 @@
		assigned-clock-rates = <0>, <198000000>;
		cap-power-off-card;
		keep-power-in-suspend;
		max-frequency = <25000000>;
		mmc-pwrseq = <&wifi_pwrseq>;
		no-1-8-v;
		non-removable;