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arm64: dts: rockchip: Fix SD card support for RK3576 Nanopi R76s

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When runtime suspend is enabled, the associated power domain is powered
off, which resets the registers, including the power control bit. As a result,
the card loses power during runtime suspend. The card should still be able
to process I/O with the help of mmc_blk_mq_rw_recovery(), which is suboptimal.
To address this issue, we must use vmmc-supply with a GPIO based method to
maintain power to the card and store valid tuning phases. Also, add cd-gpios
method to make hot-plug work correctly during idle periods.

Fixes: 7fee888827 ("arm64: dts: rockchip: Add devicetree for the FriendlyElec NanoPi R76S")
Cc: stable@vger.kernel.org
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Tested-by: Marco Schirrmeister <mschirrmeister@gmail.com>
Link: https://patch.msgid.link/1768524932-163929-6-git-send-email-shawn.lin@rock-chips.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
This commit is contained in:
Shawn Lin 2026-01-16 08:55:32 +08:00 committed by Heiko Stuebner
parent 7226664bf9
commit a9c1acebfe
1 changed files with 22 additions and 1 deletions
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23
arch/arm64/boot/dts/rockchip/rk3576-nanopi-r76s.dts
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@ -192,6 +192,18 @@ vcc_3v3_s0: regulator-vcc-3v3-s0 {
regulator-name = "vcc_3v3_s0";
vin-supply = <&vcc_3v3_s3>;
};
vcc3v3_sd: regulator-vcc-3v3-sd {
compatible = "regulator-fixed";
enable-active-high;
gpios = <&gpio0 RK_PB6 GPIO_ACTIVE_HIGH>;
pinctrl-names = "default";
pinctrl-0 = <&sdmmc_pwren>;
regulator-name = "vcc3v3_sd";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
vin-supply = <&vcc_3v3_s0>;
};
};
&combphy0_ps {
@ -726,6 +738,12 @@ pcie1_perstn: pcie1-perstn {
};
};
sdmmc {
sdmmc_pwren: sdmmc-pwren {
rockchip,pins = <0 RK_PB6 RK_FUNC_GPIO &pcfg_pull_none>;
};
};
usb {
usb_otg0_pwren_h: usb-otg0-pwren-h {
rockchip,pins = <0 RK_PD1 RK_FUNC_GPIO &pcfg_pull_none>;
@ -751,11 +769,14 @@ &sdmmc {
bus-width = <4>;
cap-mmc-highspeed;
cap-sd-highspeed;
cd-gpios = <&gpio0 RK_PA7 GPIO_ACTIVE_LOW>;
disable-wp;
no-mmc;
no-sdio;
pinctrl-names = "default";
pinctrl-0 = <&sdmmc0_clk &sdmmc0_cmd &sdmmc0_det &sdmmc0_bus4>;
sd-uhs-sdr104;
vmmc-supply = <&vcc_3v3_s3>;
vmmc-supply = <&vcc3v3_sd>;
vqmmc-supply = <&vccio_sd_s0>;
status = "okay";
};