From f381ad7e53b5805f65459c4fde275ecececce2c3 Mon Sep 17 00:00:00 2001
From: Qubot <1445788683@qq.com>
Date: Fri, 5 Jun 2026 23:15:09 +0800
Subject: [PATCH] arm64: dts: sun60iw2: cap BPI-M8 WiFi SDIO speed

---
 .../boot/dts/sunxi/sun60i-a733-bananapi-m8.dts     | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)

diff --git a/arch/arm64/boot/dts/sunxi/sun60i-a733-bananapi-m8.dts b/arch/arm64/boot/dts/sunxi/sun60i-a733-bananapi-m8.dts
index 9f8efed53..07c0579e1 100644
--- a/arch/arm64/boot/dts/sunxi/sun60i-a733-bananapi-m8.dts
+++ b/arch/arm64/boot/dts/sunxi/sun60i-a733-bananapi-m8.dts
@@ -891,23 +891,17 @@
 	no-mmc;
 	no-sd;
 	cap-sd-highspeed;
-	/*sd-uhs-sdr12*/
-	sd-uhs-sdr25;
-	sd-uhs-sdr50;
-	sd-uhs-ddr50;
-	sd-uhs-sdr104;
 	/*sunxi-power-save-mode;*/
 	sunxi-dis-signal-vol-sw;
 	cap-sdio-irq;
 	keep-power-in-suspend;
 	ignore-pm-notify;
 	/*
-	 * For AIC Wi-Fi SDIO3.0,
-	 * when max-frequency = <208000000>, set sunxi-dly-208M = <0 0 0 0 0 0>
-	 * when max-frequency = <150000000>, set sunxi-dly-208M = <1 1 0 0 1 1>
+	 * The on-board Wi-Fi SDIO link is unstable at SDR104/200MHz on BPI-M8:
+	 * the card can probe once, then hit cmd7/cmd52 timeouts and re-enumerate.
+	 * Keep it at high-speed 50MHz until reliable UHS timing is validated.
 	 */
-	max-frequency = <208000000>;
-	sunxi-dly-208M  = <0 0 0 0 0 0>;
+	max-frequency = <50000000>;
 	ctl-spec-caps = <0x428>;
 	status = "okay";
 };