linux-kernel - [PATCH] driver: bus: simple-pm-bus: Add Freescale i.MX8qm/qxp CSR compatible strings

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Date:   Wed, 25 Jan 2023 16:32:48 +0800
From:   Liu Ying <victor.liu@....com>
To:     linux-kernel@...r.kernel.org
Cc:     gregkh@...uxfoundation.org, geert+renesas@...der.be,
        linux-imx@....com, Rob Herring <robh@...nel.org>,
        Lee Jones <lee@...nel.org>
Subject: [PATCH] driver: bus: simple-pm-bus: Add Freescale i.MX8qm/qxp CSR compatible strings

Freescale i.MX8qm/qxp CSR module matches with what the simple power
managed bus driver does, considering it needs an IPG clock to be
enabled before accessing it's child devices, the child devices need
to be populated by the CSR module and the child devices' power
management operations need to be propagated to their parent devices.
Add the CSR module's compatible strings to simple_pm_bus_of_match[]
table to support the CSR module.

Suggested-by: Rob Herring <robh@...nel.org>
Suggested-by: Lee Jones <lee@...nel.org>
Signed-off-by: Liu Ying <victor.liu@....com>
---
The CSR module's dt-binding documentation can be found at
Documentation/devicetree/bindings/mfd/fsl,imx8qxp-csr.yaml.

Suggested by Rob and Lee in this thread:
https://patchwork.kernel.org/project/linux-arm-kernel/patch/20221017075702.4182846-1-victor.liu@nxp.com/

 drivers/bus/simple-pm-bus.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/bus/simple-pm-bus.c b/drivers/bus/simple-pm-bus.c
index 7afe1947e1c0..4a7575afe6c6 100644
--- a/drivers/bus/simple-pm-bus.c
+++ b/drivers/bus/simple-pm-bus.c
@@ -120,6 +120,8 @@ static const struct of_device_id simple_pm_bus_of_match[] = {
 	{ .compatible = "simple-mfd",	.data = ONLY_BUS },
 	{ .compatible = "isa",		.data = ONLY_BUS },
 	{ .compatible = "arm,amba-bus",	.data = ONLY_BUS },
+	{ .compatible = "fsl,imx8qm-lvds-csr", },
+	{ .compatible = "fsl,imx8qxp-mipi-lvds-csr", },
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, simple_pm_bus_of_match);
-- 
2.37.1