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Message-Id: <1244189111-19639-26-git-send-email-vapier@gentoo.org> Date: Fri, 5 Jun 2009 04:04:34 -0400 From: Mike Frysinger <vapier@...too.org> To: linux-kernel@...r.kernel.org Cc: uclinux-dist-devel@...ckfin.uclinux.org, Graf Yang <graf.yang@...log.com> Subject: [PATCH 25/62] Blackfin: work around anomaly 05000287 From: Graf Yang <graf.yang@...log.com> Make sure we work around anomaly 05000287 by configuring different port preferences for the data cache. Signed-off-by: Graf Yang <graf.yang@...log.com> Signed-off-by: Mike Frysinger <vapier@...too.org> --- arch/blackfin/kernel/cplb-mpu/cacheinit.c | 9 ++++++++- 1 files changed, 8 insertions(+), 1 deletions(-) diff --git a/arch/blackfin/kernel/cplb-mpu/cacheinit.c b/arch/blackfin/kernel/cplb-mpu/cacheinit.c index c6ff947..d5a86c3 100644 --- a/arch/blackfin/kernel/cplb-mpu/cacheinit.c +++ b/arch/blackfin/kernel/cplb-mpu/cacheinit.c @@ -55,7 +55,14 @@ void __cpuinit bfin_dcache_init(struct cplb_entry *dcplb_tbl) } ctrl = bfin_read_DMEM_CONTROL(); - ctrl |= DMEM_CNTR; + + /* + * Anomaly notes: + * 05000287 - We implement workaround #2 - Change the DMEM_CONTROL + * register, so that the port preferences for DAG0 and DAG1 are set + * to port B + */ + ctrl |= DMEM_CNTR | PORT_PREF0 | (ANOMALY_05000287 ? PORT_PREF1 : 0); bfin_write_DMEM_CONTROL(ctrl); SSYNC(); } -- 1.6.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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