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

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Message-Id: <20240805174814.1944742-1-jpaulo.silvagoncalves@gmail.com>
Date: Mon,  5 Aug 2024 14:48:14 -0300
From: João Paulo Gonçalves <jpaulo.silvagoncalves@...il.com>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>
Cc: Marcel Ziswiler <marcel.ziswiler@...adex.com>,
	devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	João Paulo Gonçalves <joao.goncalves@...adex.com>
Subject: [PATCH] arm64: dts: imx8mp-verdin: drop limit to sdio wi-fi frequency to 100 mhz

From: Marcel Ziswiler <marcel.ziswiler@...adex.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@...adex.com>
Signed-off-by: João Paulo Gonçalves <joao.goncalves@...adex.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