In certain projects, the main system regulator, composed of simple
components including an under-voltage detector and capacitors, can be
aptly described as a fixed regulator in the device tree. To cater to
such use cases, this patch extends the fixed regulator binding to
support the 'system-critical-regulator' property. This property
signifies that the fixed-regulator is vital for system stability.
Signed-off-by: Oleksij Rempel <[email protected]>
---
.../devicetree/bindings/regulator/fixed-regulator.yaml | 2 ++
1 file changed, 2 insertions(+)
diff --git a/Documentation/devicetree/bindings/regulator/fixed-regulator.yaml b/Documentation/devicetree/bindings/regulator/fixed-regulator.yaml
index ce7751b9129c..9ff9abf2691a 100644
--- a/Documentation/devicetree/bindings/regulator/fixed-regulator.yaml
+++ b/Documentation/devicetree/bindings/regulator/fixed-regulator.yaml
@@ -105,6 +105,8 @@ properties:
description:
Interrupt signaling a critical under-voltage event.
+ system-critical-regulator: true
+
required:
- compatible
- regulator-name
--
2.39.2
On Thu, Oct 26, 2023 at 04:48:22PM +0200, Oleksij Rempel wrote:
> In certain projects, the main system regulator, composed of simple
> components including an under-voltage detector and capacitors, can be
> aptly described as a fixed regulator in the device tree. To cater to
> such use cases, this patch extends the fixed regulator binding to
> support the 'system-critical-regulator' property. This property
> signifies that the fixed-regulator is vital for system stability.
There is no programming interface for fixed-regulators, so how do you
know an under/over voltage condition?
>
> Signed-off-by: Oleksij Rempel <[email protected]>
> ---
> .../devicetree/bindings/regulator/fixed-regulator.yaml | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/regulator/fixed-regulator.yaml b/Documentation/devicetree/bindings/regulator/fixed-regulator.yaml
> index ce7751b9129c..9ff9abf2691a 100644
> --- a/Documentation/devicetree/bindings/regulator/fixed-regulator.yaml
> +++ b/Documentation/devicetree/bindings/regulator/fixed-regulator.yaml
> @@ -105,6 +105,8 @@ properties:
> description:
> Interrupt signaling a critical under-voltage event.
>
> + system-critical-regulator: true
> +
> required:
> - compatible
> - regulator-name
> --
> 2.39.2
>
On Fri, Oct 27, 2023 at 04:24:40PM -0500, Rob Herring wrote:
> On Thu, Oct 26, 2023 at 04:48:22PM +0200, Oleksij Rempel wrote:
> > In certain projects, the main system regulator, composed of simple
> > components including an under-voltage detector and capacitors, can be
> > aptly described as a fixed regulator in the device tree. To cater to
> > such use cases, this patch extends the fixed regulator binding to
> > support the 'system-critical-regulator' property. This property
> > signifies that the fixed-regulator is vital for system stability.
> There is no programming interface for fixed-regulators, so how do you
> know an under/over voltage condition?
There's support for interrupts now - it's a just a simple signal so if
the interrupt is asserted you know there's an error but that's all you
know.
On Thu, 26 Oct 2023 16:48:22 +0200, Oleksij Rempel wrote:
> In certain projects, the main system regulator, composed of simple
> components including an under-voltage detector and capacitors, can be
> aptly described as a fixed regulator in the device tree. To cater to
> such use cases, this patch extends the fixed regulator binding to
> support the 'system-critical-regulator' property. This property
> signifies that the fixed-regulator is vital for system stability.
>
> Signed-off-by: Oleksij Rempel <[email protected]>
> ---
> .../devicetree/bindings/regulator/fixed-regulator.yaml | 2 ++
> 1 file changed, 2 insertions(+)
>
Acked-by: Rob Herring <[email protected]>