| Message ID | 20231020153022.57858-3-andrejs.cainikovs@gmail.com |
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From: Andrejs Cainikovs <andrejs.cainikovs@gmail.com>
To: Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
NXP Linux Team <linux-imx@nxp.com>,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Cc: Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Andrejs Cainikovs <andrejs.cainikovs@toradex.com>,
stable@vger.kernel.org
Subject: [PATCH v1 2/2] ARM: dts: imx6q-apalis: add can power-up delay on
ixora board
Date: Fri, 20 Oct 2023 17:30:22 +0200
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| Series |
imx6/imx8-apalis: add can power-up delay on ixora board
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Commit Message
Andrejs Cainikovs
Oct. 20, 2023, 3:30 p.m. UTC
From: Andrejs Cainikovs <andrejs.cainikovs@toradex.com> Newer variants of Ixora boards require a power-up delay when powering up the CAN transceiver of up to 1ms. Cc: stable@vger.kernel.org Signed-off-by: Andrejs Cainikovs <andrejs.cainikovs@toradex.com> --- arch/arm/boot/dts/nxp/imx/imx6q-apalis-ixora-v1.2.dts | 2 ++ 1 file changed, 2 insertions(+)
Comments
On Fri, Oct 20, 2023 at 05:30:22PM +0200, Andrejs Cainikovs wrote: > From: Andrejs Cainikovs <andrejs.cainikovs@toradex.com> > > Newer variants of Ixora boards require a power-up delay when powering up > the CAN transceiver of up to 1ms. > > Cc: stable@vger.kernel.org Why is only the iMX6 change required for stable? Shawn > Signed-off-by: Andrejs Cainikovs <andrejs.cainikovs@toradex.com> > --- > arch/arm/boot/dts/nxp/imx/imx6q-apalis-ixora-v1.2.dts | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6q-apalis-ixora-v1.2.dts b/arch/arm/boot/dts/nxp/imx/imx6q-apalis-ixora-v1.2.dts > index 717decda0ceb..3ac7a4501620 100644 > --- a/arch/arm/boot/dts/nxp/imx/imx6q-apalis-ixora-v1.2.dts > +++ b/arch/arm/boot/dts/nxp/imx/imx6q-apalis-ixora-v1.2.dts > @@ -76,6 +76,7 @@ reg_can1_supply: regulator-can1-supply { > pinctrl-names = "default"; > pinctrl-0 = <&pinctrl_enable_can1_power>; > regulator-name = "can1_supply"; > + startup-delay-us = <1000>; > }; > > reg_can2_supply: regulator-can2-supply { > @@ -85,6 +86,7 @@ reg_can2_supply: regulator-can2-supply { > pinctrl-names = "default"; > pinctrl-0 = <&pinctrl_enable_can2_power>; > regulator-name = "can2_supply"; > + startup-delay-us = <1000>; > }; > }; > > -- > 2.34.1 >
On Mon, Nov 27, 2023 at 10:52:18AM +0800, Shawn Guo wrote: > On Fri, Oct 20, 2023 at 05:30:22PM +0200, Andrejs Cainikovs wrote: > > From: Andrejs Cainikovs <andrejs.cainikovs@toradex.com> > > > > Newer variants of Ixora boards require a power-up delay when powering up > > the CAN transceiver of up to 1ms. > > > > Cc: stable@vger.kernel.org > > Why is only the iMX6 change required for stable? From what I know currently apalis-imx8 is not yet used in products with a mainline kernel therefore the assumption that the backporting would add very small value, however maybe is better to just backport both to stable. Francesco
diff --git a/arch/arm/boot/dts/nxp/imx/imx6q-apalis-ixora-v1.2.dts b/arch/arm/boot/dts/nxp/imx/imx6q-apalis-ixora-v1.2.dts index 717decda0ceb..3ac7a4501620 100644 --- a/arch/arm/boot/dts/nxp/imx/imx6q-apalis-ixora-v1.2.dts +++ b/arch/arm/boot/dts/nxp/imx/imx6q-apalis-ixora-v1.2.dts @@ -76,6 +76,7 @@ reg_can1_supply: regulator-can1-supply { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_enable_can1_power>; regulator-name = "can1_supply"; + startup-delay-us = <1000>; }; reg_can2_supply: regulator-can2-supply { @@ -85,6 +86,7 @@ reg_can2_supply: regulator-can2-supply { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_enable_can2_power>; regulator-name = "can2_supply"; + startup-delay-us = <1000>; }; };