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[U-Boot,v1,09/11] board: gdsys: Enable scrambling on DP501

Message ID 1398865804-12539-10-git-send-email-dirk.eibach@gdsys.cc
State Accepted
Delegated to: Stefan Roese
Headers show

Commit Message

Dirk Eibach April 30, 2014, 1:50 p.m. UTC 
From: Dirk Eibach <dirk.eibach@gdsys.cc>

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>
---

 board/gdsys/common/dp501.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/board/gdsys/common/dp501.c b/board/gdsys/common/dp501.c
index 7958bae..7eb15ed 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);