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[PATCH] powerpc: DTS: mpc8313erdb: Add timer@*/clock-frequency properties

From: J. Neuschäfer via B4 Relay <devnull+j.ne.posteo.net@kernel.org>
Date: 2026-01-01 17:09:55
Also in: b4-sent, linux-devicetree, lkml
Subsystem: linux for powerpc (32-bit and 64-bit), the rest · Maintainers: Madhavan Srinivasan, Linus Torvalds

From: "J. Neuschäfer" <redacted>

The recent formalization of the fsl,gtm schema has shown that
mpc8313erdb.dts doesn't provide the clock-frequency property on timer
nodes. A few different expectations collide here:

 - Both the binding and the driver for the Freescale global timer module
   (GTM) have always required clock-frequency, since their addition in
   2008 (v2.6.26-rc5-236-g83ff9dcf375c41).
 - mpc8313erdb.dts never had the timer@*/clock-frequency property, since
   the timer nodes were added in 2008 (v2.6.26-3343-g574366128db29e)

I suspect the way this worked was that the bootloader filled these
values when booting on an MPC8313 board.

Reported-by: kernel test robot <redacted>
Closes: https://lore.kernel.org/oe-kbuild-all/202505300136.HOpO5P6y-lkp@intel.com/ (local)
Signed-off-by: J. Neuschäfer <redacted>
---
 arch/powerpc/boot/dts/mpc8313erdb.dts | 2 ++
 1 file changed, 2 insertions(+)
diff --git a/arch/powerpc/boot/dts/mpc8313erdb.dts b/arch/powerpc/boot/dts/mpc8313erdb.dts
index 09508b4c8c7309..0bddc3be9e62f8 100644
--- a/arch/powerpc/boot/dts/mpc8313erdb.dts
+++ b/arch/powerpc/boot/dts/mpc8313erdb.dts
@@ -308,6 +308,7 @@ gtm1: timer@500 {
 			reg = <0x500 0x100>;
 			interrupts = <90 8 78 8 84 8 72 8>;
 			interrupt-parent = <&ipic>;
+			clock-frequency = <0>; /* filled by bootloader */
 		};
 
 		timer@600 {
@@ -315,6 +316,7 @@ timer@600 {
 			reg = <0x600 0x100>;
 			interrupts = <91 8 79 8 85 8 73 8>;
 			interrupt-parent = <&ipic>;
+			clock-frequency = <0>; /* filled by bootloader */
 		};
 	};
 
---
base-commit: 9448598b22c50c8a5bb77a9103e2d49f134c9578
change-id: 20250625-timer-clock-e03fa9e835c8

Best regards,
-- 
J. Neuschäfer [off-list ref]


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