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| author | Timur Tabi <timur@freescale.com> | 2011-04-13 10:38:23 -0500 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2011-04-28 22:09:23 -0500 |
| commit | 7d6d9ba9d0cb0bb2fefc4ce16c191c1bbad7b656 (patch) | |
| tree | 5b68bc185603892102ee768ed438a10b318af80f /arch/powerpc/cpu | |
| parent | da30b9fd97f031a6b6863359f3d4c6633e5c7035 (diff) | |
| download | u-boot-imx-7d6d9ba9d0cb0bb2fefc4ce16c191c1bbad7b656.zip u-boot-imx-7d6d9ba9d0cb0bb2fefc4ce16c191c1bbad7b656.tar.gz u-boot-imx-7d6d9ba9d0cb0bb2fefc4ce16c191c1bbad7b656.tar.bz2 | |
powerpc/85xx: Display SERDES 8 erratum warning if banks are not disabled
The work-around for P4080 erratum SERDES-8 requires all lanes of banks two
and three to be disabled (powered down) in the RCW. Display a warning
message if this is not the case.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/cpu')
| -rw-r--r-- | arch/powerpc/cpu/mpc85xx/fsl_corenet_serdes.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/fsl_corenet_serdes.c b/arch/powerpc/cpu/mpc85xx/fsl_corenet_serdes.c index edacdb8..f5452c0 100644 --- a/arch/powerpc/cpu/mpc85xx/fsl_corenet_serdes.c +++ b/arch/powerpc/cpu/mpc85xx/fsl_corenet_serdes.c @@ -476,6 +476,17 @@ void fsl_serdes_init(void) #ifdef CONFIG_SYS_P4080_ERRATUM_SERDES8 /* + * Display a warning if banks two and three are not disabled in the RCW, + * since our work-around for SERDES8 depends on these banks being + * disabled at power-on. + */ +#define B2_B3 (FSL_CORENET_RCWSRn_SRDS_LPD_B2 | FSL_CORENET_RCWSRn_SRDS_LPD_B3) + if ((in_be32(&gur->rcwsr[5]) & B2_B3) != B2_B3) { + printf("Warning: SERDES8 requires banks two and " + "three to be disabled in the RCW\n"); + } + + /* * Store the values of the fsl_srds_lpd_b2 and fsl_srds_lpd_b3 * hwconfig options into the srds_lpd_b[] array. See README.p4080ds * for a description of these options. |