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arm64: dts: rockchip: Add enable-strobe-pulldown to emmc phy on ROCK Pi 4

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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 <dev@folker-schwesinger.de>
Reviewed-by: Dragan Simic <dsimic@manjaro.org>
Link: https://lore.kernel.org/r/20240327192641.14220-2-dev@folker-schwesinger.de
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
This commit is contained in:
Folker Schwesinger 2024-03-27 20:26:37 +01:00 committed by Heiko Stuebner
parent 604552d010
commit f720dd9b8b
1 changed files with 3 additions and 1 deletions
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4
arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi
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@ -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";
};