Thread (28 messages) 28 messages, 7 authors, 2021-09-03

RE: [PATCH V2 08/13] dt-bindings: imx: gpcv2: add support for optional resets

From: Peng Fan <peng.fan@nxp.com>
Date: 2021-05-08 00:50:08
Also in: linux-arm-kernel, lkml

Subject: Re: [PATCH V2 08/13] dt-bindings: imx: gpcv2: add support for
optional resets

On Thu, May 06, 2021 at 08:43:17AM +0200, Frieder Schrempf wrote:
quoted
On 06.05.21 03:04, Peng Fan (OSS) wrote:
quoted
From: Lucas Stach <l.stach@pengutronix.de>

For some domains the resets of the devices in the domain are not
automatically triggered. Add an optional resets property to allow
the GPC driver to trigger those resets explicitly.

The resets belong to devices located inside the power domain, which
need to be held in reset across the power-up sequence. So we have no
means to specify what each reset is in a generic power-domain
binding. Same situation as with the clocks in this binding actually.
My understanding was that Rob wanted this explanation to be contained in
the binding docs itself and not only in the commit message, but I might be
wrong.

Yes, that would be better.
Sure, I will include that in V3.

Thanks,
Peng.
quoted
quoted
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 Documentation/devicetree/bindings/power/fsl,imx-gpcv2.yaml | 7
+++++++
 1 file changed, 7 insertions(+)

diff --git
a/Documentation/devicetree/bindings/power/fsl,imx-gpcv2.yaml
b/Documentation/devicetree/bindings/power/fsl,imx-gpcv2.yaml
index a96e6dbf1858..4330c73a2c30 100644
--- a/Documentation/devicetree/bindings/power/fsl,imx-gpcv2.yaml
+++ b/Documentation/devicetree/bindings/power/fsl,imx-gpcv2.yaml
@@ -66,6 +66,13 @@ properties:

           power-supply: true

+          resets:
+            description: |
+              A number of phandles to resets that need to be
asserted during
quoted
quoted
+              power-up sequencing of the domain.
+            minItems: 1
+            maxItems: 4
+
         required:
           - '#power-domain-cells'
           - reg
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