* [PATCH V2] ARM: dts: make pfuze switch always-on for imx platforms
@ 2018-06-27 1:30 Anson Huang
2018-07-13 2:16 ` Anson Huang
0 siblings, 1 reply; 3+ messages in thread
From: Anson Huang @ 2018-06-27 1:30 UTC (permalink / raw)
To: shawnguo, s.hauer, kernel, fabio.estevam, robh+dt, mark.rutland
Cc: Linux-imx, linux-arm-kernel, devicetree, linux-kernel
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@nxp.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.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
^ permalink raw reply related [flat|nested] 3+ messages in thread
* RE: [PATCH V2] ARM: dts: make pfuze switch always-on for imx platforms
2018-06-27 1:30 [PATCH V2] ARM: dts: make pfuze switch always-on for imx platforms Anson Huang
@ 2018-07-13 2:16 ` Anson Huang
2018-07-17 2:40 ` Shawn Guo
0 siblings, 1 reply; 3+ messages in thread
From: Anson Huang @ 2018-07-13 2:16 UTC (permalink / raw)
To: shawnguo, s.hauer, kernel, Fabio Estevam, robh+dt, mark.rutland
Cc: dl-linux-imx, linux-arm-kernel, devicetree, linux-kernel
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@kernel.org; s.hauer@pengutronix.de; kernel@pengutronix.de;
> Fabio Estevam <fabio.estevam@nxp.com>; robh+dt@kernel.org;
> mark.rutland@arm.com
> Cc: dl-linux-imx <linux-imx@nxp.com>; linux-arm-kernel@lists.infradead.org;
> devicetree@vger.kernel.org; linux-kernel@vger.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@nxp.com>
> Reviewed-by: Fabio Estevam <fabio.estevam@nxp.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
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH V2] ARM: dts: make pfuze switch always-on for imx platforms
2018-07-13 2:16 ` Anson Huang
@ 2018-07-17 2:40 ` Shawn Guo
0 siblings, 0 replies; 3+ messages in thread
From: Shawn Guo @ 2018-07-17 2:40 UTC (permalink / raw)
To: Anson Huang
Cc: s.hauer, kernel, Fabio Estevam, robh+dt, mark.rutland,
dl-linux-imx, linux-arm-kernel, devicetree, linux-kernel
On Fri, Jul 13, 2018 at 02:16:55AM +0000, Anson Huang wrote:
> 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!
Okay, resend them as a series with commit log updated, since the commit
log doesn't reflect the current situation any longer.
Shawn
^ permalink raw reply [flat|nested] 3+ messages in thread
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