[PATCHv4 5/5] cpm2: Reset the CPM when early debugging is not enabled.

Laurent Pinchart laurentp at cse-semaphore.com
Tue Apr 1 23:35:55 EST 2008


Similarly to what is done for PQ1-based platforms, this patch resets the
PQ2 Communication Processor Module in cpm2_reset() when early debugging is
not enabled. This helps avoiding conflicts when the boot loader configured
the CPM in an unexpected way.

Signed-off-by: Laurent Pinchart <laurentp at cse-semaphore.com>
---
 arch/powerpc/sysdev/cpm2.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/arch/powerpc/sysdev/cpm2.c b/arch/powerpc/sysdev/cpm2.c
index 7be7112..57ed1a4 100644
--- a/arch/powerpc/sysdev/cpm2.c
+++ b/arch/powerpc/sysdev/cpm2.c
@@ -80,6 +80,12 @@ void __init cpm2_reset(void)
 	/* Tell everyone where the comm processor resides.
 	 */
 	cpmp = &cpm2_immr->im_cpm;
+
+#ifndef CONFIG_PPC_EARLY_DEBUG_CPM
+	/* Reset the CPM.
+	 */
+	cpm_command(CPM_CR_RST, 0);
+#endif
 }
 
 static DEFINE_SPINLOCK(cmd_lock);
-- 
1.5.0


-- 
Laurent Pinchart
CSE Semaphore Belgium

Chaussée de Bruxelles, 732A
B-1410 Waterloo
Belgium

T +32 (2) 387 42 59
F +32 (2) 387 42 75
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: not available
URL: <http://lists.ozlabs.org/pipermail/linuxppc-dev/attachments/20080401/b60482cd/attachment.pgp>


More information about the Linuxppc-dev mailing list