diff options
| author | Shawn Lin <shawn.lin@rock-chips.com> | 2026-01-16 03:55:32 +0300 |
|---|---|---|
| committer | Heiko Stuebner <heiko@sntech.de> | 2026-01-16 16:35:04 +0300 |
| commit | a9c1acebfe0484343a443d082e039ca77186ed22 (patch) | |
| tree | f5e793fbe10c4fc144e0e262d782a7fce879fe68 | |
| parent | 7226664bf952c4cfddccd74b154a7d994608d153 (diff) | |
| download | linux-a9c1acebfe0484343a443d082e039ca77186ed22.tar.xz | |
arm64: dts: rockchip: Fix SD card support for RK3576 Nanopi R76s
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")
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>
| -rw-r--r-- | arch/arm64/boot/dts/rockchip/rk3576-nanopi-r76s.dts | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/arch/arm64/boot/dts/rockchip/rk3576-nanopi-r76s.dts b/arch/arm64/boot/dts/rockchip/rk3576-nanopi-r76s.dts index 31fbefaeceab..7ec27b05ff10 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"; }; |