From: Laurent Pinchart <laurentp@cse-semaphore.com>
Date: Thu, 10 Apr 2008 15:02:38 +0000 (+0200)
Subject: [POWERPC] CPM2: Reset the CPM when early debugging is not enabled.
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=872a15deed2f6c2dc14353a6109adde99cfee690;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

[POWERPC] CPM2: Reset the CPM when early debugging is not enabled.

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@cse-semaphore.com>
Acked-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---

diff --git a/arch/powerpc/sysdev/cpm2.c b/arch/powerpc/sysdev/cpm2.c
index fa70ee31349e..4ab3f1f5a7c3 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);