linux-kernel - [PATCH v1 6/6] arm64: dts: imx8mq-librem5: Limit the max sdio frequency

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Message-Id: <20210913135706.309685-7-martin.kepplinger@puri.sm>
Date:   Mon, 13 Sep 2021 15:57:06 +0200
From:   Martin Kepplinger <martin.kepplinger@...i.sm>
To:     robh@...nel.org, shawnguo@...nel.org, kernel@...gutronix.de,
        festevam@...il.com
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, phone-devel@...r.kernel.org,
        kernel@...i.sm, Angus Ainslie <angus@...ea.ca>,
        Martin Kepplinger <martin.kepplinger@...i.sm>
Subject: [PATCH v1 6/6] arm64: dts: imx8mq-librem5: Limit the max sdio frequency

From: Angus Ainslie <angus@...ea.ca>

This is needed for the 1LV Cyress WiFi module to probe correctly.
It also helps improve GNSS sensitivity.

Signed-off-by: Angus Ainslie <angus@...ea.ca>
Signed-off-by: Martin Kepplinger <martin.kepplinger@...i.sm>
---
 arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi b/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi
index 65c86fbbd6d1..a7b6ea93fbac 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi
@@ -1238,6 +1238,7 @@ &usdhc2 {
 	mmc-pwrseq = <&usdhc2_pwrseq>;
 	post-power-on-delay-ms = <1000>;
 	cd-gpios = <&gpio2 12 GPIO_ACTIVE_LOW>;
+	max-frequency = <50000000>;
 	disable-wp;
 	cap-sdio-irq;
 	keep-power-in-suspend;
-- 
2.30.2