arm64: dts: rockchip: fix eMMC reset polarity on PX30 Ringneck

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According to the Jedec 5.1 specification, the device is held in reset
when RST_n is low, therefore the polarity of the line must be that, as
specified in the Device Tree binding (mmc/mmc-pwrseq-emmc.yaml).

Due to the wrong polarity, eMMC devices with RST_n_FUNCTION[162]
bitfield [1:0] set to 0x1 (the default is 0x0) will be held in reset
forever.

Cc: stable@vger.kernel.org
Fixes: c484cf93f6 ("arm64: dts: rockchip: add PX30-µQ7 (Ringneck) SoM with Haikou baseboard")
Signed-off-by: Quentin Schulz <quentin.schulz@cherry.de>
Link: https://patch.msgid.link/20260626-ringneck-emmc-polarity-v1-1-90cefe57b316@cherry.de
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

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Quentin Schulz 2026-06-26 16:40:38 +02:00 • committed by Heiko Stuebner

parent 70f46aa200

commit dfe0787557

1 changed files with 1 additions and 1 deletions

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arch/arm64/boot/dts/rockchip/px30-ringneck.dtsi

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