[coreboot] amd rs780 gfx lane reversal patch

Bao, Zheng Zheng.Bao at amd.com
Thu Aug 12 03:20:31 CEST 2010


Please add Signed-off-by line in the mail text instead of the
attachment.

 

feature Lane reversal is tested.

 

Signed-off-by: Kerry She <kerry.she at amd.com>

 

 

Index: src/southbridge/amd/rs780/rs780_gfx.c

===================================================================

--- src/southbridge/amd/rs780/rs780_gfx.c (revision 5690)

+++ src/southbridge/amd/rs780/rs780_gfx.c (working copy)

@@ -1180,7 +1180,9 @@

      case 0:

            /* step 1, lane reversal (only need if CMOS option is
enabled) */

            if (cfg->gfx_lane_reversal) {

+                 set_nbmisc_enable_bits(nb_dev, 0x36, 1 << 31, 1 <<
31);

                  set_nbmisc_enable_bits(nb_dev, 0x33, 1 << 2, 1 << 2);

+                 set_nbmisc_enable_bits(nb_dev, 0x36, 1 << 31, 0 <<
31);

            }

            printk(BIOS_DEBUG, "rs780_gfx_init step1.\n");

 

@@ -1196,8 +1198,10 @@

      case 1:

            /* step 1, lane reversal (only need if CMOS option is
enabled) */

            if (cfg->gfx_lane_reversal) {

+                 set_nbmisc_enable_bits(nb_dev, 0x36, 1 << 31, 1 <<
31);

                  set_nbmisc_enable_bits(nb_dev, 0x33, 1 << 2, 1 << 2);

                  set_nbmisc_enable_bits(nb_dev, 0x33, 1 << 3, 1 << 3);

+                 set_nbmisc_enable_bits(nb_dev, 0x36, 1 << 31, 0 <<
31);

            }

            printk(BIOS_DEBUG, "rs780_gfx_init step1.\n");

            /* step 1.1, dual-slot gfx configuration (only need if CMOS
option is enabled) */

 

 

 

________________________________

From: coreboot-bounces at coreboot.org
[mailto:coreboot-bounces at coreboot.org] On Behalf Of She, Kerry
Sent: Wednesday, August 11, 2010 11:53 AM
To: coreboot at coreboot.org
Subject: [coreboot] amd rs780 gfx lane reversal patch

 

Hi, all

 

Amd rs780 feature Lane reversal is tested.

Please see the attachment

Thanks

 

--

Regards

Kerry She <Kerry.she at amd.com>

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