[PATCH v1] riscv: dts: microchip: add can resets to mpfs

Conor Dooley conor at kernel.org
Wed Jan 28 12:50:33 PST 2026


From: Conor Dooley <conor.dooley at microchip.com>

The can IP on PolarFire SoC requires the use of the blocks reset
during normal operation, and the property is therefore required by the
binding, causing a warning on the m100pfsevp board where it is default
enabled:
mpfs-m100pfsevp.dtb: can at 2010c000 (microchip,mpfs-can): 'resets' is a required property
Add the reset to both can nodes.

Signed-off-by: Conor Dooley <conor.dooley at microchip.com>
---
CC: Conor Dooley <conor.dooley at microchip.com>
CC: Daire McNamara <daire.mcnamara at microchip.com>
CC: Rob Herring <robh at kernel.org>
CC: Krzysztof Kozlowski <krzk+dt at kernel.org>
CC: linux-riscv at lists.infradead.org
CC: devicetree at vger.kernel.org
CC: linux-kernel at vger.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 5c2963e269b8..a0ffedc2d344 100644
--- a/arch/riscv/boot/dts/microchip/mpfs.dtsi
+++ b/arch/riscv/boot/dts/microchip/mpfs.dtsi
@@ -428,6 +428,7 @@ can0: can at 2010c000 {
 			clocks = <&clkcfg CLK_CAN0>, <&clkcfg CLK_MSSPLL3>;
 			interrupt-parent = <&plic>;
 			interrupts = <56>;
+			resets = <&mss_top_sysreg CLK_CAN0>;
 			status = "disabled";
 		};
 
@@ -437,6 +438,7 @@ can1: can at 2010d000 {
 			clocks = <&clkcfg CLK_CAN1>, <&clkcfg CLK_MSSPLL3>;
 			interrupt-parent = <&plic>;
 			interrupts = <57>;
+			resets = <&mss_top_sysreg CLK_CAN1>;
 			status = "disabled";
 		};
 
-- 
2.51.0




More information about the linux-riscv mailing list