From f720dd9b8b6d8b2160beda789429d5489ce8a099 Mon Sep 17 00:00:00 2001 From: Folker Schwesinger Date: Wed, 27 Mar 2024 20:26:37 +0100 Subject: [PATCH] arm64: dts: rockchip: Add enable-strobe-pulldown to emmc phy on ROCK Pi 4 Commit 8b5c2b45b8f0 disabled the internal pull-down for the strobe line causing I/O errors in HS400 mode for various eMMC modules. Enable the internal strobe pull-down for ROCK Pi 4 boards. Also re-enable HS400 mode, that was replaced with HS200 mode as a workaround for the stability issues in: cee572756aa2 ("arm64: dts: rockchip: Disable HS400 for eMMC on ROCK Pi 4"). This was tested on ROCK 4SE and ROCK Pi 4B+. Fixes: 8b5c2b45b8f0 ("phy: rockchip: set pulldown for strobe line in dts") Signed-off-by: Folker Schwesinger Reviewed-by: Dragan Simic Link: https://lore.kernel.org/r/20240327192641.14220-2-dev@folker-schwesinger.de Signed-off-by: Heiko Stuebner --- arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi index 281a12180703..b9d6284bb804 100644 --- a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi @@ -194,6 +194,7 @@ }; &emmc_phy { + rockchip,enable-strobe-pulldown; status = "okay"; }; @@ -648,7 +649,8 @@ &sdhci { max-frequency = <150000000>; bus-width = <8>; - mmc-hs200-1_8v; + mmc-hs400-1_8v; + mmc-hs400-enhanced-strobe; non-removable; status = "okay"; };