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Update default TSCR for P9

Message ID 20170619103549.31068-1-mikey@neuling.org
State Accepted
Headers show

Commit Message

Michael Neuling June 19, 2017, 10:35 a.m. UTC
Update default TSCR value for P9 as recommended by HW folk.

Signed-off-by: Michael Neuling <mikey@neuling.org>
---
 asm/head.S | 3 +++
 1 file changed, 3 insertions(+)

Comments

Stewart Smith June 21, 2017, 8:45 a.m. UTC | #1
Michael Neuling <mikey@neuling.org> writes:
> Update default TSCR value for P9 as recommended by HW folk.
>
> Signed-off-by: Michael Neuling <mikey@neuling.org>

Merged to master as of 396b940371cf471612d947d8b22fc8143d866dc9
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Patch

diff --git a/asm/head.S b/asm/head.S
index 8e33f22969..5c40813ff7 100644
--- a/asm/head.S
+++ b/asm/head.S
@@ -725,6 +725,9 @@  init_shared_sprs:
 	b	9f
 
 4:	/* P9 */
+	/* TSCR: Recommended value by HW folks */
+	LOAD_IMM32(%r3,0x80287880)
+	mtspr	SPR_TSCR, %r3
 	/* HID0: Clear bit 5 (enable core recovery)
 	 *       Clear bit 4 (HILE)
 	 */