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| author | Biwen Li <biwen.li@nxp.com> | 2019-09-25 18:40:42 +0800 |
|---|---|---|
| committer | Priyanka Jain <priyanka.jain@nxp.com> | 2019-10-21 15:34:18 +0530 |
| commit | 1936841b11759957f78ed1c30e9d728aa9bb6c0c (patch) | |
| tree | 15a3e060dcf0d6322651c31bcfa317875f9fbf96 /arch/arm/cpu | |
| parent | e93a7caf86cd23ab2cc8d0b138b3634896f8909a (diff) | |
| download | u-boot-1936841b11759957f78ed1c30e9d728aa9bb6c0c.tar.gz u-boot-1936841b11759957f78ed1c30e9d728aa9bb6c0c.tar.xz u-boot-1936841b11759957f78ed1c30e9d728aa9bb6c0c.zip | |
armv7: ls102xa: add errata ID A-008646 for workaround
The patch adds an errata ID A-008646 for workaround
to provide more information by errata ID.
Signed-off-by: Biwen Li <biwen.li@nxp.com>
Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
Diffstat (limited to 'arch/arm/cpu')
| -rw-r--r-- | arch/arm/cpu/armv7/ls102xa/ls102xa_psci.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/arm/cpu/armv7/ls102xa/ls102xa_psci.c b/arch/arm/cpu/armv7/ls102xa/ls102xa_psci.c index 00b6ad48ce..86693edf5d 100644 --- a/arch/arm/cpu/armv7/ls102xa/ls102xa_psci.c +++ b/arch/arm/cpu/armv7/ls102xa/ls102xa_psci.c @@ -68,9 +68,10 @@ static void __secure ls1_deepsleep_irq_cfg(void) ippdexpcr0 = in_be32(&rcpm->ippdexpcr0); /* - * Workaround: There is bug of register ippdexpcr1, when read it always - * returns zero, so its value is saved to a scrachpad register to be - * read, that is why we don't read it from register ippdexpcr1 itself. + * Workaround of errata A-008646 + * Errata states that read to register ippdexpcr1 always returns + * zero irrespective of what value is written into it. So its value + * is first saved to a spare register and then read from it */ ippdexpcr1 = in_be32(&scfg->sparecr[7]); out_be32(&rcpm->ippdexpcr1, ippdexpcr1); |