| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <AM3PR04MB1315B66212D928D7EAF27557F5580@AM3PR04MB1315.eurprd04.prod.outlook.com>
Date: Fri, 13 Jul 2018 02:16:55 +0000
From: Anson Huang <anson.huang@....com>
To: "shawnguo@...nel.org" <shawnguo@...nel.org>,
"s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
"kernel@...gutronix.de" <kernel@...gutronix.de>,
Fabio Estevam <fabio.estevam@....com>,
"robh+dt@...nel.org" <robh+dt@...nel.org>,
"mark.rutland@....com" <mark.rutland@....com>
CC: dl-linux-imx <linux-imx@....com>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH V2] ARM: dts: make pfuze switch always-on for imx
platforms
Hi, Shawn
Although the commit 5fe156f1cab4 ("regulator: pfuze100: add enable/disable for switch") is reverted to avoid the boot failure on some i.MX platforms, but adding the "regulator-always-on" property for those pfuze's critical switches are the right way and making sense, no matter how the pfuze regulator's switch ON/OFF function will be implemented, below patches should can be applied anyway?
ARM: dts: imx6sll-evk: make pfuze100 sw4 always on
ARM: dts: make pfuze switch always-on for imx platforms
ARM: dts: imx6sl-evk: keep sw4 always on
Let me know your thoughts, thanks!
Anson Huang
Best Regards!
> -----Original Message-----
> From: Anson Huang
> Sent: Wednesday, June 27, 2018 9:31 AM
> To: shawnguo@...nel.org; s.hauer@...gutronix.de; kernel@...gutronix.de;
> Fabio Estevam <fabio.estevam@....com>; robh+dt@...nel.org;
> mark.rutland@....com
> Cc: dl-linux-imx <linux-imx@....com>; linux-arm-kernel@...ts.infradead.org;
> devicetree@...r.kernel.org; linux-kernel@...r.kernel.org
> Subject: [PATCH V2] ARM: dts: make pfuze switch always-on for imx platforms
>
> commit 5fe156f1cab4 ("regulator: pfuze100: add enable/disable for switch")
> will cause those unreferenced switches being turned off if
> "regulator-always-on" is NOT present, as pfuze switches are normally used by
> critical modules which must be always ON or shared by many peripherals which
> do NOT implement power domain control, so just make sure all switches
> always ON to avoid any system issue caused by unexpectedly turning off
> switches.
>
> Fixes: 5fe156f1cab4 ("regulator: pfuze100: add enable/disable for switch")
> Signed-off-by: Anson Huang <Anson.Huang@....com>
> Reviewed-by: Fabio Estevam <fabio.estevam@....com>
> ---
> changes since V1:
> improve the way of referencing commit, and add fix tag.
> arch/arm/boot/dts/imx6q-display5.dtsi | 1 +
> arch/arm/boot/dts/imx6q-mccmon6.dts | 1 +
> arch/arm/boot/dts/imx6q-novena.dts | 1 +
> arch/arm/boot/dts/imx6q-pistachio.dts | 1 +
> arch/arm/boot/dts/imx6qdl-gw54xx.dtsi | 1 +
> arch/arm/boot/dts/imx6qdl-sabresd.dtsi | 1 +
> arch/arm/boot/dts/imx6sx-sdb-reva.dts | 1 +
> 7 files changed, 7 insertions(+)
>
> diff --git a/arch/arm/boot/dts/imx6q-display5.dtsi
> b/arch/arm/boot/dts/imx6q-display5.dtsi
> index 85232c7..33d266f 100644
> --- a/arch/arm/boot/dts/imx6q-display5.dtsi
> +++ b/arch/arm/boot/dts/imx6q-display5.dtsi
> @@ -326,6 +326,7 @@
> sw4_reg: sw4 {
> regulator-min-microvolt = <800000>;
> regulator-max-microvolt = <3300000>;
> + regulator-always-on;
> };
>
> swbst_reg: swbst {
> diff --git a/arch/arm/boot/dts/imx6q-mccmon6.dts
> b/arch/arm/boot/dts/imx6q-mccmon6.dts
> index b7e9f38..e6429c5 100644
> --- a/arch/arm/boot/dts/imx6q-mccmon6.dts
> +++ b/arch/arm/boot/dts/imx6q-mccmon6.dts
> @@ -166,6 +166,7 @@
> sw4_reg: sw4 {
> regulator-min-microvolt = <800000>;
> regulator-max-microvolt = <3300000>;
> + regulator-always-on;
> };
>
> swbst_reg: swbst {
> diff --git a/arch/arm/boot/dts/imx6q-novena.dts
> b/arch/arm/boot/dts/imx6q-novena.dts
> index fcd824d..0b3c651 100644
> --- a/arch/arm/boot/dts/imx6q-novena.dts
> +++ b/arch/arm/boot/dts/imx6q-novena.dts
> @@ -341,6 +341,7 @@
> reg_sw4: sw4 {
> regulator-min-microvolt = <800000>;
> regulator-max-microvolt = <3300000>;
> + regulator-always-on;
> };
>
> reg_swbst: swbst {
> diff --git a/arch/arm/boot/dts/imx6q-pistachio.dts
> b/arch/arm/boot/dts/imx6q-pistachio.dts
> index a31e83c..6ea09f9 100644
> --- a/arch/arm/boot/dts/imx6q-pistachio.dts
> +++ b/arch/arm/boot/dts/imx6q-pistachio.dts
> @@ -253,6 +253,7 @@
> sw4_reg: sw4 {
> regulator-min-microvolt = <800000>;
> regulator-max-microvolt = <3300000>;
> + regulator-always-on;
> };
>
> swbst_reg: swbst {
> diff --git a/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi
> b/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi
> index a1a6fb5..281cae5 100644
> --- a/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi
> +++ b/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi
> @@ -268,6 +268,7 @@
> sw4_reg: sw4 {
> regulator-min-microvolt = <800000>;
> regulator-max-microvolt = <3300000>;
> + regulator-always-on;
> };
>
> swbst_reg: swbst {
> diff --git a/arch/arm/boot/dts/imx6qdl-sabresd.dtsi
> b/arch/arm/boot/dts/imx6qdl-sabresd.dtsi
> index 15744ad..6e46a19 100644
> --- a/arch/arm/boot/dts/imx6qdl-sabresd.dtsi
> +++ b/arch/arm/boot/dts/imx6qdl-sabresd.dtsi
> @@ -341,6 +341,7 @@
> sw4_reg: sw4 {
> regulator-min-microvolt = <800000>;
> regulator-max-microvolt = <3300000>;
> + regulator-always-on;
> };
>
> swbst_reg: swbst {
> diff --git a/arch/arm/boot/dts/imx6sx-sdb-reva.dts
> b/arch/arm/boot/dts/imx6sx-sdb-reva.dts
> index e3533e7..9cc6ff2 100644
> --- a/arch/arm/boot/dts/imx6sx-sdb-reva.dts
> +++ b/arch/arm/boot/dts/imx6sx-sdb-reva.dts
> @@ -63,6 +63,7 @@
> sw4_reg: sw4 {
> regulator-min-microvolt = <800000>;
> regulator-max-microvolt = <3300000>;
> + regulator-always-on;
> };
>
> swbst_reg: swbst {
> --
> 2.7.4
Powered by blists - more mailing lists