Message ID | 20221020095934.1659449-15-peng.fan@oss.nxp.com |
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State | New |
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arm64: dts: imx8m-evk: misc dts update
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Commit Message
Peng Fan (OSS)
Oct. 20, 2022, 9:59 a.m. UTC
From: Haibo Chen <haibo.chen@nxp.com> After commit f7907e57aea2 ("regulator: fixed: add off-on-delay"), user can use "off-on-delay-us" to define the regulator off-delay time. For SD card, according to the spec requirement, for sd card power reset operation, it need sd card supply voltage 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 to each board, 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: Haibo Chen <haibo.chen@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com> --- arch/arm64/boot/dts/freescale/imx8mm-evk.dts | 2 +- arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi | 1 + arch/arm64/boot/dts/freescale/imx8mq-evk.dts | 1 + 3 files changed, 3 insertions(+), 1 deletion(-)
Comments
On 22-10-20, Peng Fan (OSS) wrote: > From: Haibo Chen <haibo.chen@nxp.com> > > After commit f7907e57aea2 ("regulator: fixed: add off-on-delay"), user > can use "off-on-delay-us" to define the regulator off-delay time. > > For SD card, according to the spec requirement, for sd card power reset > operation, it need sd card supply voltage 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 to each board, 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. Please mention that the real issue which is a capicity which gets unloaded to slow. Please see the u-boot commit for this which explains it better IMHO. Regards, Marco > > Signed-off-by: Haibo Chen <haibo.chen@nxp.com> > Signed-off-by: Peng Fan <peng.fan@nxp.com> > --- > arch/arm64/boot/dts/freescale/imx8mm-evk.dts | 2 +- > arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi | 1 + > arch/arm64/boot/dts/freescale/imx8mq-evk.dts | 1 + > 3 files changed, 3 insertions(+), 1 deletion(-) > > diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts > index c93387fcd498..898735965ac9 100644 > --- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts > +++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts > @@ -22,7 +22,7 @@ reg_sd1_vmmc: sd1_regulator { > regulator-min-microvolt = <3300000>; > regulator-max-microvolt = <3300000>; > gpio = <&gpio2 10 GPIO_ACTIVE_HIGH>; > - off-on-delay = <20000>; > + off-on-delay-us = <20000>; > startup-delay-us = <100>; > enable-active-high; > }; > diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi > index ce450965e837..fdbcd2483efc 100644 > --- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi > +++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi > @@ -56,6 +56,7 @@ reg_usdhc2_vmmc: regulator-usdhc2 { > regulator-min-microvolt = <3300000>; > regulator-max-microvolt = <3300000>; > gpio = <&gpio2 19 GPIO_ACTIVE_HIGH>; > + off-on-delay-us = <20000>; > enable-active-high; > }; > > diff --git a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts > index 82387b9cb800..07d9fb2aacf8 100644 > --- a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts > +++ b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts > @@ -46,6 +46,7 @@ reg_usdhc2_vmmc: regulator-vsd-3v3 { > regulator-min-microvolt = <3300000>; > regulator-max-microvolt = <3300000>; > gpio = <&gpio2 19 GPIO_ACTIVE_HIGH>; > + off-on-delay-us = <20000>; > enable-active-high; > }; > > -- > 2.37.1 > > >
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts index c93387fcd498..898735965ac9 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts +++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts @@ -22,7 +22,7 @@ reg_sd1_vmmc: sd1_regulator { regulator-min-microvolt = <3300000>; regulator-max-microvolt = <3300000>; gpio = <&gpio2 10 GPIO_ACTIVE_HIGH>; - off-on-delay = <20000>; + off-on-delay-us = <20000>; startup-delay-us = <100>; enable-active-high; }; diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi index ce450965e837..fdbcd2483efc 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi @@ -56,6 +56,7 @@ reg_usdhc2_vmmc: regulator-usdhc2 { regulator-min-microvolt = <3300000>; regulator-max-microvolt = <3300000>; gpio = <&gpio2 19 GPIO_ACTIVE_HIGH>; + off-on-delay-us = <20000>; enable-active-high; }; diff --git a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts index 82387b9cb800..07d9fb2aacf8 100644 --- a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts +++ b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts @@ -46,6 +46,7 @@ reg_usdhc2_vmmc: regulator-vsd-3v3 { regulator-min-microvolt = <3300000>; regulator-max-microvolt = <3300000>; gpio = <&gpio2 19 GPIO_ACTIVE_HIGH>; + off-on-delay-us = <20000>; enable-active-high; };