diff options
Diffstat (limited to 'arch/arm/cpu/armv7/ls102xa/ls102xa_psci.c')
| -rw-r--r-- | arch/arm/cpu/armv7/ls102xa/ls102xa_psci.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/arch/arm/cpu/armv7/ls102xa/ls102xa_psci.c b/arch/arm/cpu/armv7/ls102xa/ls102xa_psci.c index bb169aaaf4..df64f5415a 100644 --- a/arch/arm/cpu/armv7/ls102xa/ls102xa_psci.c +++ b/arch/arm/cpu/armv7/ls102xa/ls102xa_psci.c @@ -68,12 +68,18 @@ 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_le32(&scfg->sparecr[7]); - out_be32(&rcpm->ippdexpcr1, ippdexpcr1); + ippdexpcr1 = in_be32(&scfg->sparecr[7]); + + /* + * To allow OCRAM to be used as wakeup source in deep sleep, + * do not power it down. + */ + out_be32(&rcpm->ippdexpcr1, ippdexpcr1 | RCPM_IPPDEXPCR1_OCRAM1); if (ippdexpcr0 & RCPM_IPPDEXPCR0_ETSEC) pmcintecr |= SCFG_PMCINTECR_ETSECRXG0 | |