From: "Peng Fan (OSS)" <peng.fan@oss.nxp.com>
To: robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org,
shawnguo@kernel.org, s.hauer@pengutronix.de
Cc: kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, Peng Fan <peng.fan@nxp.com>
Subject: [PATCH 09/15] arm64: dts: imx8mn-evk: set off-on-delay-us in regulator
Date: Thu, 20 Oct 2022 17:59:28 +0800 [thread overview]
Message-ID: <20221020095934.1659449-10-peng.fan@oss.nxp.com> (raw)
In-Reply-To: <20221020095934.1659449-1-peng.fan@oss.nxp.com>
From: Peng Fan <peng.fan@nxp.com>
According to SD spec, for sd card power reset operation, the sd card
supply voltage needs to be lower than 0.5v and keep over 1ms, otherwise,
next time power back the sd card supply voltage to 3.3v, sd card can't
support SD3.0 mode again.
This patch add the off-on-delay-us, make sure the sd power reset behavior
is align with the specification. Without this patch, when do quick system
suspend/resume test, some sd card can't work at SD3.0 mode after system
resume back.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi b/arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi
index 261c36540079..2b4395854283 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi
@@ -36,6 +36,7 @@ reg_usdhc2_vmmc: regulator-usdhc2 {
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
gpio = <&gpio2 19 GPIO_ACTIVE_HIGH>;
+ off-on-delay-us = <12000>;
enable-active-high;
};
--
2.37.1
next prev parent reply other threads:[~2022-10-20 10:00 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-20 9:59 [PATCH 00/15] arm64: dts: imx8m-evk: misc dts update Peng Fan (OSS)
2022-10-20 9:59 ` [PATCH 01/15] arm64: dts: imx8mp: add mlmix power domain Peng Fan (OSS)
2022-10-20 9:59 ` [PATCH 02/15] arm64: dts: imx8mp-evk: correct pcie pad settings Peng Fan (OSS)
2022-10-20 9:59 ` [PATCH 03/15] arm64: dts: imx8mp-evk: fix BUCK/LDO voltage Peng Fan (OSS)
2022-10-20 11:02 ` Marco Felsch
2022-10-21 9:13 ` Peng Fan
2022-10-21 9:44 ` Jacky Bai
2022-10-20 9:59 ` [PATCH 04/15] ARM64: dts: imx8mp-evk: add pwm support Peng Fan (OSS)
2022-10-20 11:04 ` Marco Felsch
2022-10-20 9:59 ` [PATCH 05/15] arm64: dts: imx8mp-evk: enable uart1/3 ports Peng Fan (OSS)
2022-10-20 11:07 ` Marco Felsch
2022-10-21 8:55 ` Peng Fan
2022-10-21 9:09 ` Marco Felsch
2022-10-21 9:31 ` Peng Fan
2022-10-21 9:53 ` Marco Felsch
2022-10-20 9:59 ` [PATCH 06/15] arm64: dts: imx8mp-evk: enable fspi nor on imx8mp evk Peng Fan (OSS)
2022-10-20 11:12 ` Marco Felsch
2022-10-20 9:59 ` [PATCH 07/15] arm64: dts: imx8mp-evk: enable I2C2 node Peng Fan (OSS)
2022-10-20 12:21 ` Marco Felsch
2022-10-20 9:59 ` [PATCH 08/15] arm64: dts: imx8mn-evk: update vdd_soc dvs voltage Peng Fan (OSS)
2022-10-20 9:59 ` Peng Fan (OSS) [this message]
2022-10-20 9:59 ` [PATCH 10/15] arm64: dts: imx8mn-evk: add i2c gpio recovery settings Peng Fan (OSS)
2022-10-20 9:59 ` [PATCH 11/15] arm64: dts: imx8mn-evk: enable uart1 Peng Fan (OSS)
2022-10-20 9:59 ` [PATCH 12/15] arm64: dts: imx8mn-evk: enable usdhc1 Peng Fan (OSS)
2022-10-20 9:59 ` [PATCH 13/15] arm64: dts: imx8mm-evk: Enable usdhc1 to support wifi Peng Fan (OSS)
2022-10-20 9:59 ` [PATCH 14/15] arm64: dts: imx8m[m,p]-evk: change to use off-on-delay-us in regulator Peng Fan (OSS)
2022-10-20 14:13 ` [PATCH 14/15] arm64: dts: imx8m[m, p]-evk: " Marco Felsch
2022-10-20 9:59 ` [PATCH 15/15] arm64: dts: imx8mm-evk: add vcc supply for pca6416 Peng Fan (OSS)
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