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| author | Oleksandr Suvorov <oleksandr.suvorov@toradex.com> | 2021-07-13 23:21:07 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-08-12 13:19:38 +0200 |
| commit | c22aabdfb7c358cc8c9df970994a3c8f455f7ca9 (patch) | |
| tree | db8eedd384677e582b26f070e8faf582e910240c | |
| parent | ba5b3733e026e0b54c98dac28874a510ef10adf5 (diff) | |
| download | linux-stable-c22aabdfb7c358cc8c9df970994a3c8f455f7ca9.tar.gz linux-stable-c22aabdfb7c358cc8c9df970994a3c8f455f7ca9.tar.bz2 linux-stable-c22aabdfb7c358cc8c9df970994a3c8f455f7ca9.zip | |
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: c2e4987e0e02 ("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>
| -rw-r--r-- | arch/arm/boot/dts/imx6ull-colibri-wifi.dtsi | 1 |
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 038d8c90f6df..621396884c31 100644 --- a/arch/arm/boot/dts/imx6ull-colibri-wifi.dtsi +++ b/arch/arm/boot/dts/imx6ull-colibri-wifi.dtsi @@ -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; |