From 22258443921c59d25da741266cbac583a7402714 Mon Sep 17 00:00:00 2001 From: Chad Monroe Date: Mon, 15 Jul 2024 10:37:55 -0700 Subject: [PATCH] mediatek: filogic: disable eMMC HS400 mode for Mount Stuart series The eMMC chip used in a small batch of these devices has issues operating in HS400 mode. Reducing to HS200 mode works around the problem and does not cause any noticeable performance penalties as smaller chips are not fast enough to saturate the bus. Root cause analysis is pending. Signed-off-by: Chad Monroe --- target/linux/mediatek/dts/mt7988a-smartrg-mt-stuart.dtsi | 2 -- 1 file changed, 2 deletions(-) diff --git a/target/linux/mediatek/dts/mt7988a-smartrg-mt-stuart.dtsi b/target/linux/mediatek/dts/mt7988a-smartrg-mt-stuart.dtsi index 2b468f9bb3..fac267abf4 100644 --- a/target/linux/mediatek/dts/mt7988a-smartrg-mt-stuart.dtsi +++ b/target/linux/mediatek/dts/mt7988a-smartrg-mt-stuart.dtsi @@ -481,8 +481,6 @@ max-frequency = <200000000>; cap-mmc-highspeed; mmc-hs200-1_8v; - mmc-hs400-1_8v; - hs400-ds-delay = <0x12814>; vmmc-supply = <®_3p3v>; vqmmc-supply = <®_1p8v>; non-removable; -- 2.30.2