linux-kernel - [PATCH 2/2] pmdomain: gpcv2: Suppress bind attrs

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Message-Id: <20241206112731.98244-2-peng.fan@oss.nxp.com>
Date: Fri,  6 Dec 2024 19:27:31 +0800
From: "Peng Fan (OSS)" <peng.fan@....nxp.com>
To: ulf.hansson@...aro.org,
	shawnguo@...nel.org,
	s.hauer@...gutronix.de
Cc: kernel@...gutronix.de,
	festevam@...il.com,
	linux-pm@...r.kernel.org,
	aford173@...il.com,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Peng Fan <peng.fan@....com>
Subject: [PATCH 2/2] pmdomain: gpcv2: Suppress bind attrs

From: Peng Fan <peng.fan@....com>

The gpcv2 drivers on imx8m series are registered as platform
devices and this opens the possibility of reloading the driver
at runtime.

But this doesn't actually work. There are some hardware sequence
dependecy between blk ctrl and gpc, also power domains are used
by other peripherals, so fix this by explicitly suppressing bind
attrs.

Signed-off-by: Peng Fan <peng.fan@....com>
---
 drivers/pmdomain/imx/gpcv2.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/pmdomain/imx/gpcv2.c b/drivers/pmdomain/imx/gpcv2.c
index e67ecf99ef84..4db4d666f5bf 100644
--- a/drivers/pmdomain/imx/gpcv2.c
+++ b/drivers/pmdomain/imx/gpcv2.c
@@ -1437,6 +1437,7 @@ static struct platform_driver imx_pgc_domain_driver = {
 	.driver = {
 		.name = "imx-pgc",
 		.pm = &imx_pgc_domain_pm_ops,
+		.suppress_bind_attrs = true,
 	},
 	.probe    = imx_pgc_domain_probe,
 	.remove = imx_pgc_domain_remove,
@@ -1549,6 +1550,7 @@ static struct platform_driver imx_gpc_driver = {
 	.driver = {
 		.name = "imx-gpcv2",
 		.of_match_table = imx_gpcv2_dt_ids,
+		.suppress_bind_attrs = true,
 	},
 	.probe = imx_gpcv2_probe,
 };
-- 
2.37.1