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authorOleksandr Suvorov <oleksandr.suvorov@toradex.com>2021-07-13 15:28:35 +0300
committerOleksandr Suvorov <oleksandr.suvorov@toradex.com>2021-07-13 16:04:02 +0300
commit0560b5b704924e23c52772cc83c7b9e74537fb5f (patch)
tree44cdda275b445b33943798ee6915613a92452982
parenta2e5dc80229e114cee12a54c4717f9b2a31546c6 (diff)
ARM: dts: colibri-imx6ull: limit SDIO clock to 25MHz
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. Related-to: ELB-4005 Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
-rw-r--r--arch/arm/boot/dts/imx6ull-colibri-wifi.dtsi1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/imx6ull-colibri-wifi.dtsi b/arch/arm/boot/dts/imx6ull-colibri-wifi.dtsi
index 432276037788..ee36a53b445c 100644
--- a/arch/arm/boot/dts/imx6ull-colibri-wifi.dtsi
+++ b/arch/arm/boot/dts/imx6ull-colibri-wifi.dtsi
@@ -179,6 +179,7 @@
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;