linux-kernel - [PATCH v2 6/7] arm64: dts: imx8mq-librem5: Limit the max sdio frequency

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Date:   Tue,  5 Oct 2021 15:49:01 +0200
From:   Martin Kepplinger <martin.kepplinger@...i.sm>
To:     martin.kepplinger@...i.sm
Cc:     devicetree@...r.kernel.org, festevam@...il.com,
        kernel@...gutronix.de, kernel@...i.sm,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        phone-devel@...r.kernel.org, robh@...nel.org, shawnguo@...nel.org,
        Angus Ainslie <angus@...ea.ca>
Subject: [PATCH v2 6/7] 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 396eb4434229..d86486fd659d 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi
@@ -1237,6 +1237,7 @@ &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