From: Dirk Eibach <dirk.eibach@gdsys.cc>
Date: Thu, 3 Jul 2014 07:28:23 +0000 (+0200)
Subject: board: gdsys: Enable scrambling on DP501
X-Git-Tag: v2014.07~18
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=b415fec65f9867d851366b0bf17759497ff8b392;p=u-boot

board: gdsys: Enable scrambling on DP501

For proper displayport performance, scrambling has to be enabled, but
is turned off on DP501 by default.

Signed-off-by: Dirk Eibach <dirk.eibach@gdsys.cc>
---

diff --git a/board/gdsys/common/dp501.c b/board/gdsys/common/dp501.c
index 7958baeaaf..7eb15ed0ba 100644
--- a/board/gdsys/common/dp501.c
+++ b/board/gdsys/common/dp501.c
@@ -61,6 +61,7 @@ void dp501_powerup(u8 addr)
 	i2c_reg_write(addr, 0x71, 0x20); /* Enable Aux burst write */
 	dp501_setbits(addr, 0x78, 0x30); /* Disable HPD2 IRQ */
 	dp501_clrbits(addr, 0x2f, 0x40); /* Link FIFO reset selection */
+	dp501_clrbits(addr, 0x60, 0x20); /* Enable scrambling */
 
 #ifdef CONFIG_SYS_DP501_VCAPCTRL0
 	i2c_reg_write(addr, 0x24, CONFIG_SYS_DP501_VCAPCTRL0);