[PATCH] arm64: dts: imx8mp-verdin: drop limit to sdio wi-fi frequency to 100 mhz

João Paulo Gonçalves posted 1 patch 1 year, 4 months ago
arch/arm64/boot/dts/freescale/imx8mp-verdin-wifi.dtsi | 1 -
1 file changed, 1 deletion(-)
[PATCH] arm64: dts: imx8mp-verdin: drop limit to sdio wi-fi frequency to 100 mhz
Posted by João Paulo Gonçalves 1 year, 4 months ago
From: Marcel Ziswiler <marcel.ziswiler@toradex.com>

SDIO frequency was limited to workaround some instabilities, however it
turned out that the instability had nothing to do with the speed but was
because of an issue with the USDHC IP that was fixed in
commit 52e4c32baed2 ("mmc: sdhci-esdhc-imx: only enable DAT[0] and CMD line
auto tuning for SDIO device").

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: João Paulo Gonçalves <joao.goncalves@toradex.com>
---
 arch/arm64/boot/dts/freescale/imx8mp-verdin-wifi.dtsi | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-verdin-wifi.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-verdin-wifi.dtsi
index efcab00c0142..cae06cb67cd3 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-verdin-wifi.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp-verdin-wifi.dtsi
@@ -75,7 +75,6 @@ bluetooth {
 &usdhc1 {
 	bus-width = <4>;
 	keep-power-in-suspend;
-	max-frequency = <100000000>;
 	non-removable;
 	pinctrl-names = "default", "state_100mhz", "state_200mhz";
 	pinctrl-0 = <&pinctrl_usdhc1>, <&pinctrl_wifi_ctrl>;
-- 
2.34.1

Re: [PATCH] arm64: dts: imx8mp-verdin: drop limit to sdio wi-fi frequency to 100 mhz
Posted by Shawn Guo 1 year, 4 months ago
On Mon, Aug 05, 2024 at 02:48:14PM -0300, João Paulo Gonçalves wrote:
> From: Marcel Ziswiler <marcel.ziswiler@toradex.com>
> 
> SDIO frequency was limited to workaround some instabilities, however it
> turned out that the instability had nothing to do with the speed but was
> because of an issue with the USDHC IP that was fixed in
> commit 52e4c32baed2 ("mmc: sdhci-esdhc-imx: only enable DAT[0] and CMD line
> auto tuning for SDIO device").
> 
> Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
> Signed-off-by: João Paulo Gonçalves <joao.goncalves@toradex.com>

Applied, thanks!