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* [PATCH 4.9 66/71] MIPS: OCTEON: mark RGMII interface disabled on OCTEON III
       [not found] <>
@ 2019-01-07 12:33 ` Greg Kroah-Hartman
  0 siblings, 0 replies; 1+ messages in thread
From: Greg Kroah-Hartman @ 2019-01-07 12:33 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Aaro Koskinen, Paul Burton,
	Ralf Baechle, James Hogan, linux-mips

4.9-stable review patch.  If anyone has any objections, please let me know.


From: Aaro Koskinen <>

commit edefae94b7b9f10d5efe32dece5a36e9d9ecc29e upstream.

Commit 885872b722b7 ("MIPS: Octeon: Add Octeon III CN7xxx
interface detection") added RGMII interface detection for OCTEON III,
but it results in the following logs:

[    7.165984] ERROR: Unsupported Octeon model in __cvmx_helper_rgmii_probe
[    7.173017] ERROR: Unsupported Octeon model in __cvmx_helper_rgmii_probe

The current RGMII routines are valid only for older OCTEONS that
use GMX/ASX hardware blocks. On later chips AGL should be used,
but support for that is missing in the mainline. Until that is added,
mark the interface as disabled.

Fixes: 885872b722b7 ("MIPS: Octeon: Add Octeon III CN7xxx interface detection")
Signed-off-by: Aaro Koskinen <>
Signed-off-by: Paul Burton <>
Cc: Ralf Baechle <>
Cc: James Hogan <>
Cc: # 4.7+
Signed-off-by: Greg Kroah-Hartman <>

 arch/mips/cavium-octeon/executive/cvmx-helper.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/arch/mips/cavium-octeon/executive/cvmx-helper.c
+++ b/arch/mips/cavium-octeon/executive/cvmx-helper.c
@@ -290,7 +290,8 @@ static cvmx_helper_interface_mode_t __cv
 	case 3:
 	case 4:
+		/* TODO: Implement support for AGL (RGMII). */

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2019-01-07 12:33 ` [PATCH 4.9 66/71] MIPS: OCTEON: mark RGMII interface disabled on OCTEON III Greg Kroah-Hartman

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