linux-kernel - [PATCH v1] arm64: dts: meson: a1: place pwrc and secure-monitor under /firmware

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Message-ID: <20230323185548.13731-1-ddrokosov@sberdevices.ru>
Date:   Thu, 23 Mar 2023 21:55:48 +0300
From:   Dmitry Rokosov <ddrokosov@...rdevices.ru>
To:     <krzysztof.kozlowski@...aro.org>, <robh@...nel.org>,
        <neil.armstrong@...aro.org>, <khilman@...libre.com>,
        <jbrunet@...libre.com>, <martin.blumenstingl@...glemail.com>,
        <jianxin.pan@...ogic.com>
CC:     <kernel@...rdevices.ru>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-amlogic@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <rockosov@...il.com>, Dmitry Rokosov <ddrokosov@...rdevices.ru>
Subject: [PATCH v1] arm64: dts: meson: a1: place pwrc and secure-monitor under /firmware

Before, meson power secure controller was a child of secure monitor node.
But secure monitor isn't the bus in terms of device tree subsystem, so
of_platform initialization code doesn't populate its children
(of_platform_default_populate() API).

Therefore in the current device tree meson power secure controller isn't
probed at all.

If we place meson power secure controller and secure monitor nodes under
'/firmware', they will be populated automatically from of_platform
initialization.

Fixes: 04dd0b6584cd ("arm64: dts: meson: a1: add secure power domain controller")
Signed-off-by: Dmitry Rokosov <ddrokosov@...rdevices.ru>
---
 arch/arm64/boot/dts/amlogic/meson-a1.dtsi | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/amlogic/meson-a1.dtsi b/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
index 77023a29b6e7..44c651254dc5 100644
--- a/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
@@ -72,8 +72,10 @@ linux,cma {
 		};
 	};
 
-	sm: secure-monitor {
-		compatible = "amlogic,meson-gxbb-sm";
+	firmware {
+		sm: secure-monitor {
+			compatible = "amlogic,meson-gxbb-sm";
+		};
 
 		pwrc: power-controller {
 			compatible = "amlogic,meson-a1-pwrc";
-- 
2.36.0