linux-kernel - [PATCH v1] riscv: dts: microchip: can on mpfs requires resets to function correctly

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <20251117-reference-mangle-17721deeb79c@spud>
Date: Mon, 17 Nov 2025 16:40:46 +0000
From: Conor Dooley <conor@...nel.org>
To: linux-kernel@...r.kernel.org
Cc: conor@...nel.org,
	Conor Dooley <conor.dooley@...rochip.com>,
	Daire McNamara <daire.mcnamara@...rochip.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	linux-riscv@...ts.infradead.org,
	devicetree@...r.kernel.org
Subject: [PATCH v1] riscv: dts: microchip: can on mpfs requires resets to function correctly

From: Conor Dooley <conor.dooley@...rochip.com>

The can driver must use resets during normal driver operation, and will
not function correctly without them. Add them to the devicetree for
mpfs.

Signed-off-by: Conor Dooley <conor.dooley@...rochip.com>
---
CC: Conor Dooley <conor.dooley@...rochip.com>
CC: Daire McNamara <daire.mcnamara@...rochip.com>
CC: Rob Herring <robh@...nel.org>
CC: Krzysztof Kozlowski <krzk+dt@...nel.org>
CC: linux-riscv@...ts.infradead.org
CC: devicetree@...r.kernel.org

linux-kernel@...r.kernel.org
 arch/riscv/boot/dts/microchip/mpfs.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/riscv/boot/dts/microchip/mpfs.dtsi b/arch/riscv/boot/dts/microchip/mpfs.dtsi
index 0fb94581b6cb..015f1daf5f61 100644
--- a/arch/riscv/boot/dts/microchip/mpfs.dtsi
+++ b/arch/riscv/boot/dts/microchip/mpfs.dtsi
@@ -444,6 +444,7 @@ can0: can@...0c000 {
 			clocks = <&clkcfg CLK_CAN0>, <&clkcfg CLK_MSSPLL3>;
 			interrupt-parent = <&plic>;
 			interrupts = <56>;
+			resets = <&mss_top_sysreg CLK_CAN0>;
 			status = "disabled";
 		};
 
@@ -453,6 +454,7 @@ can1: can@...0d000 {
 			clocks = <&clkcfg CLK_CAN1>, <&clkcfg CLK_MSSPLL3>;
 			interrupt-parent = <&plic>;
 			interrupts = <57>;
+			resets = <&mss_top_sysreg CLK_CAN1>;
 			status = "disabled";
 		};
 
-- 
2.51.0