[PATCH v2] ARM: dts: colibri-imx6ull: limit SDIO clock to 25MHz
From: Oleksandr Suvorov <hidden>
Date: 2021-07-13 20:21:27
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: c2e4987e0e02 ("ARM: dts: imx6ull: add Toradex Colibri iMX6ULL support")
Signed-off-by: Oleksandr Suvorov <redacted>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
---
Changes in v2:
- add Fixes field
- add Reviewed-by taken from Fabio
END
arch/arm/boot/dts/imx6ull-colibri-wifi.dtsi | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm/boot/dts/imx6ull-colibri-wifi.dtsi b/arch/arm/boot/dts/imx6ull-colibri-wifi.dtsi
index a0545431b3dc..9f1e38282bee 100644
--- a/arch/arm/boot/dts/imx6ull-colibri-wifi.dtsi
+++ b/arch/arm/boot/dts/imx6ull-colibri-wifi.dtsi@@ -43,6 +43,7 @@ &usdhc2 { 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;
--
2.31.1
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