From: Marek Vasut <marex@denx.de>
Date: Tue, 12 Apr 2022 22:42:49 +0000 (+0200)
Subject: imx: power-domain: Descend into pgc subnode if present
X-Git-Tag: v2022.07~90^2~60
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8741d9275626dc2fdea725b6c5bdcd824c03a526;p=platform%2Fkernel%2Fu-boot.git

imx: power-domain: Descend into pgc subnode if present

In case the power domain node structure is gpc@303a0000/pgc/power-domain@N,
do not bind power domain driver to the 'pgc' node, but rather descend into
it and only bind power domain drivers to power-domain@N subnodes. This way
we do not waste one useless driver instance associated with 'pgc' node.

Tested-By: Tim Harvey <tharvey@gateworks.com> #imx8mp-venice-defconfig
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
---

diff --git a/drivers/power/domain/imx8m-power-domain.c b/drivers/power/domain/imx8m-power-domain.c
index 6082ee6..ac7411f 100644
--- a/drivers/power/domain/imx8m-power-domain.c
+++ b/drivers/power/domain/imx8m-power-domain.c
@@ -73,6 +73,12 @@ static int imx8m_power_domain_bind(struct udevice *dev)
 		/* Bind the subnode to this driver */
 		name = fdt_get_name(gd->fdt_blob, offset, NULL);
 
+		/* Descend into 'pgc' subnode */
+		if (!strstr(name, "power-domain")) {
+			offset = fdt_first_subnode(gd->fdt_blob, offset);
+			name = fdt_get_name(gd->fdt_blob, offset, NULL);
+		}
+
 		ret = device_bind_with_driver_data(dev, dev->driver, name,
 						   dev->driver_data,
 						   offset_to_ofnode(offset),