From: Shawn Lin Date: Fri, 16 Jan 2026 00:55:31 +0000 (+0800) Subject: arm64: dts: rockchip: Fix SD card support for RK3576 EVB1 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7226664bf952c4cfddccd74b154a7d994608d153;p=thirdparty%2Fkernel%2Flinux.git arm64: dts: rockchip: Fix SD card support for RK3576 EVB1 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. Also, add cd-gpios method to make hot-plug work correctly during idle periods. Fixes: f135a1a07352 ("arm64: dts: rockchip: Add rk3576 evb1 board") Cc: stable@vger.kernel.org Signed-off-by: Shawn Lin Link: https://patch.msgid.link/1768524932-163929-5-git-send-email-shawn.lin@rock-chips.com Signed-off-by: Heiko Stuebner --- diff --git a/arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts b/arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts index 0789733c2073f..f5746bc2970b3 100644 --- a/arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts +++ b/arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts @@ -223,6 +223,18 @@ 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>; + }; + vcc_ufs_s0: regulator-vcc-ufs-s0 { compatible = "regulator-fixed"; regulator-name = "vcc_ufs_s0"; @@ -904,6 +916,12 @@ }; }; + sdmmc { + sdmmc_pwren: sdmmc-pwren { + rockchip,pins = <0 RK_PB6 RK_FUNC_GPIO &pcfg_pull_none>; + }; + }; + usb { usb_host_pwren: usb-host-pwren { rockchip,pins = <0 RK_PC7 RK_FUNC_GPIO &pcfg_pull_none>; @@ -958,11 +976,15 @@ bus-width = <4>; cap-mmc-highspeed; cap-sd-highspeed; + cd-gpios = <&gpio0 RK_PA7 GPIO_ACTIVE_LOW>; disable-wp; max-frequency = <200000000>; no-sdio; no-mmc; + pinctrl-names = "default"; + pinctrl-0 = <&sdmmc0_clk &sdmmc0_cmd &sdmmc0_det &sdmmc0_bus4>; sd-uhs-sdr104; + vmmc-supply = <&vcc3v3_sd>; vqmmc-supply = <&vccio_sd_s0>; status = "okay"; };