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From: "Peng Fan (OSS)" <peng.fan@oss.nxp.com>
To: robh+dt@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de
Cc: kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com,
	p.zabel@pengutronix.de, l.stach@pengutronix.de, krzk@kernel.org,
	agx@sigxcpu.org, marex@denx.de, andrew.smirnov@gmail.com,
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, ping.bai@nxp.com,
	frieder.schrempf@kontron.de, aford173@gmail.com,
	abel.vesa@nxp.com, Peng Fan <peng.fan@nxp.com>
Subject: [PATCH V3 08/13] dt-bindings: imx: gpcv2: add support for optional resets
Date: Mon, 10 May 2021 12:00:40 +0800	[thread overview]
Message-ID: <20210510040045.13225-9-peng.fan@oss.nxp.com> (raw)
In-Reply-To: <20210510040045.13225-1-peng.fan@oss.nxp.com>

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.

Tested-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 .../devicetree/bindings/power/fsl,imx-gpcv2.yaml       | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Documentation/devicetree/bindings/power/fsl,imx-gpcv2.yaml b/Documentation/devicetree/bindings/power/fsl,imx-gpcv2.yaml
index a96e6dbf1858..eb248f24dce6 100644
--- a/Documentation/devicetree/bindings/power/fsl,imx-gpcv2.yaml
+++ b/Documentation/devicetree/bindings/power/fsl,imx-gpcv2.yaml
@@ -66,6 +66,16 @@ properties:
 
           power-supply: true
 
+          resets:
+            description: |
+              A number of phandles to resets that need to be asserted during
+              power-up sequencing of the domain. The resets belong to devices
+              located inside the power domain, which need to be held in reset
+              across the power-up sequence. So no means to specify what each
+              reset is in a generic power-domain binding.
+            minItems: 1
+            maxItems: 4
+
         required:
           - '#power-domain-cells'
           - reg
-- 
2.30.0


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  parent reply	other threads:[~2021-05-10  3:35 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-10  4:00 [PATCH V3 00/13] soc: imx: gpcv2: support i.MX8MM Peng Fan (OSS)
2021-05-10  4:00 ` [PATCH V3 01/13] soc: imx: gpcv2: move to more ideomatic error handling in probe Peng Fan (OSS)
2021-05-10  4:00 ` [PATCH V3 02/13] soc: imx: gpcv2: move domain mapping to domain driver probe Peng Fan (OSS)
2021-05-23  2:59   ` Shawn Guo
2021-05-10  4:00 ` [PATCH V3 03/13] soc: imx: gpcv2: switch to clk_bulk_* API Peng Fan (OSS)
2021-05-10  4:00 ` [PATCH V3 04/13] soc: imx: gpcv2: split power up and power down sequence control Peng Fan (OSS)
2021-05-10  4:00 ` [PATCH V3 05/13] soc: imx: gpcv2: wait for ADB400 handshake Peng Fan (OSS)
2021-05-10  4:00 ` [PATCH V3 06/13] soc: imx: gpcv2: add runtime PM support for power-domains Peng Fan (OSS)
2021-05-10  4:00 ` [PATCH V3 07/13] soc: imx: gpcv2: allow domains without power-sequence control Peng Fan (OSS)
2021-05-10  4:00 ` Peng Fan (OSS) [this message]
2021-05-10 16:19   ` [PATCH V3 08/13] dt-bindings: imx: gpcv2: add support for optional resets Rob Herring
2021-05-10  4:00 ` [PATCH V3 09/13] soc: " Peng Fan (OSS)
2021-05-10  4:00 ` [PATCH V3 10/13] dt-bindings: power: add defines for i.MX8MM power domains Peng Fan (OSS)
2021-05-10  4:00 ` [PATCH V3 11/13] soc: imx: gpcv2: add support " Peng Fan (OSS)
2021-05-10  4:00 ` [PATCH V3 12/13] soc: imx: gpcv2: Add support for missing i.MX8MM VPU/DISPMIX " Peng Fan (OSS)
2021-05-10  4:00 ` [PATCH V3 13/13] soc: imx: gpcv2: move reset assert after requesting domain power up Peng Fan (OSS)

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