From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-m49237.qiye.163.com (mail-m49237.qiye.163.com [45.254.49.237]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 37D77342534; Fri, 16 Jan 2026 04:25:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.254.49.237 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768537527; cv=none; b=GAMNs9JwNP+tuB/YCvgc2hglDyEYj4DjfsHSGC66E2+8nyAlxYvUz0OHBE55xhkQwEe6ebSYbhn7pY93kIjac3hYFEawbj9WO33hQO4BmpFb6XSIDbkxAtpQ47hqyhEaKwHtnGuHQd8ww8cm5/dOwEGLITUhdl+ir2LQD36aPlU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768537527; c=relaxed/simple; bh=4S7WoA7MBmTIIGY9gqDjbnyWjT1ZT1YdF9rSymg5qSA=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=n2BkaXpKCII16MPXWZdnT1hAkfa1cQvM/MIRXXIUWCMnf9BMe3TGMxWiZA5fElnBrAMDgAY+QDSRt+tkz0hF0bV+mJOcFflTMCDcbGgFP6AlKXhJmT8P8KeSSwlwhqbiS72VTYVUmBttLw6TnfYjf6LT8jlfTfolC4Fu2xyIDHI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=rock-chips.com; spf=pass smtp.mailfrom=rock-chips.com; dkim=pass (1024-bit key) header.d=rock-chips.com header.i=@rock-chips.com header.b=jnoYFE+6; arc=none smtp.client-ip=45.254.49.237 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=rock-chips.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=rock-chips.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=rock-chips.com header.i=@rock-chips.com header.b="jnoYFE+6" Received: from localhost.localdomain (unknown [58.22.7.114]) by smtp.qiye.163.com (Hmail) with ESMTP id 30d5a76ed; Fri, 16 Jan 2026 08:56:10 +0800 (GMT+08:00) From: Shawn Lin To: Heiko Stuebner , Ulf Hansson Cc: linux-rockchip@lists.infradead.org, linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, FUKAUMI Naoki , Marco Schirrmeister , John Clark , Tianling Shen , Detlev Casanova , Shawn Lin Subject: [PATCH v4 5/5] arm64: dts: rockchip: Fix SD card support for RK3576 Nanopi R76s Date: Fri, 16 Jan 2026 08:55:32 +0800 Message-Id: <1768524932-163929-6-git-send-email-shawn.lin@rock-chips.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1768524932-163929-1-git-send-email-shawn.lin@rock-chips.com> References: <1768524932-163929-1-git-send-email-shawn.lin@rock-chips.com> X-HM-Tid: 0a9bc44d7abd09cckunm67a197c8691c83 X-HM-MType: 1 X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFDSUNOT01LS0k3V1ktWUFJV1kPCRoVCBIfWUFZGklCTVZOGUhMTE9DSEpIHk9WFRQJFh oXVRMBExYaEhckFA4PWVdZGBILWUFZTkNVSUlVTFVKSk9ZV1kWGg8SFR0UWUFZT0tIVUpLSEpOTE 5VSktLVUpCS0tZBg++ DKIM-Signature: a=rsa-sha256; b=jnoYFE+6GIc90VpWQjTFwycbX53cl5iXRvoWJ7lMjoq5Mb3LqWdXogwQC1Mr5wDnWZbX+QagcJdv0bjDQMBXFL3kDuxC2pn1YeYnNgpsMFFTmZ0qqijsMTnIp7uvCFFFdv3Nu1YTHyJS13B37MJkVQE7oV/lbS90OmOzd5mVbvs=; s=default; c=relaxed/relaxed; d=rock-chips.com; v=1; bh=rGhXF5/8uiyG5kkuJJMSCKix8pPHbfQoMwB2LnqjU2c=; h=date:mime-version:subject:message-id:from; Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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: 7fee88882704 ("arm64: dts: rockchip: Add devicetree for the FriendlyElec NanoPi R76S") Signed-off-by: Shawn Lin Tested-by: Marco Schirrmeister --- Changes in v3: None Changes in v2: None .../arm64/boot/dts/rockchip/rk3576-nanopi-r76s.dts | 23 +++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/rockchip/rk3576-nanopi-r76s.dts b/arch/arm64/boot/dts/rockchip/rk3576-nanopi-r76s.dts index 31fbefa..7ec27b0 100644 --- a/arch/arm64/boot/dts/rockchip/rk3576-nanopi-r76s.dts +++ b/arch/arm64/boot/dts/rockchip/rk3576-nanopi-r76s.dts @@ -192,6 +192,18 @@ 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 @@ }; }; + 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 @@ 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"; }; -- 2.7.4