Enable Direct TMDS for the RS690, which allows to display on HDMI and DVI

monitors.

Signed-off-by: Libra Li <libra.li@technexion.com>
Acked-by: Marc Jones <marcj303@gmail.com>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4585 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

2 files changed, 56 insertions, 11 deletions

diff --git a/src/southbridge/amd/rs690/rs690_gfx.c b/src/southbridge/amd/rs690/rs690_gfx.c
index 0ed5a81369..bddb825863 100644
--- a/src/southbridge/amd/rs690/rs690_gfx.c
+++ b/src/southbridge/amd/rs690/rs690_gfx.c
@@ -471,6 +471,48 @@ void rs690_gfx_init(device_t nb_dev, device_t dev, u32 port)
 	/* done by enable_pci_bar3() before */
 
 	/* step 6 SBIOS compile flags */
+        if (cfg->gfx_tmds) {
+                /* step 6.2.2 Clock-Muxing Control */
+                /* step 6.2.2.1 */
+                set_nbmisc_enable_bits(nb_dev, 0x7, 1 << 16, 1 << 16);
+
+                /* step 6.2.2.2 */
+                set_nbmisc_enable_bits(nb_dev, 0x7, 1 << 8, 1 << 8);
+                set_nbmisc_enable_bits(nb_dev, 0x7, 1 << 10, 1 << 10);
+
+                /* step 6.2.2.3 */
+                set_nbmisc_enable_bits(nb_dev, 0x7, 1 << 26, 1 << 26);
+
+                /* step 6.2.3 Lane-Muxing Control */
+                /* step 6.2.3.1 */
+                set_nbmisc_enable_bits(nb_dev, 0x37, 0x3 << 8, 0x2 << 8);
+
+                /* step 6.2.4 Received Data Control */
+                /* step 6.2.4.1 */
+                set_pcie_enable_bits(nb_dev, 0x40, 0x3 << 16, 0x2 << 16);
+
+                /* step 6.2.4.2 */
+                set_pcie_enable_bits(nb_dev, 0x40, 0x3 << 18, 0x3 << 18);
+
+                /* step 6.2.4.3 */
+                set_pcie_enable_bits(nb_dev, 0x40, 0x3 << 20, 0x0 << 20);
+
+                /* step 6.2.4.4 */
+                set_pcie_enable_bits(nb_dev, 0x40, 0x3 << 22, 0x1 << 22);
+
+                /* step 6.2.5 PLL Power Down Control */
+                /* step 6.2.5.1 */
+                set_nbmisc_enable_bits(nb_dev, 0x35, 0x3 << 6, 0x0 << 6);
+
+                /* step 6.2.6 Driving Strength Control */
+                /* step 6.2.6.1 */
+                set_nbmisc_enable_bits(nb_dev, 0x34, 0x1 << 24, 0x0 << 24);
+
+                /* step 6.2.6.2 */
+                set_nbmisc_enable_bits(nb_dev, 0x35, 0x3 << 2, 0x3 << 2);
+        }
+
+        printk_info("rs690_gfx_init step6.\n");
 
 	/* step 7 compliance state, (only need if CMOS option is enabled) */
 	/* the compliance stete is just for test. refer to 4.2.5.2 of PCIe specification */
diff --git a/src/southbridge/amd/rs690/rs690_pcie.c b/src/southbridge/amd/rs690/rs690_pcie.c
index b454783aae..91e6bb1066 100644
--- a/src/southbridge/amd/rs690/rs690_pcie.c
+++ b/src/southbridge/amd/rs690/rs690_pcie.c
@@ -87,18 +87,21 @@ static void PciePowerOffGppPorts(device_t nb_dev, device_t dev, u32 port)
 		 Config & (PCIE_DISABLE_HIDE_UNUSED_PORTS +
 			   PCIE_GFX_COMPLIANCE))) {
 	}
-	/* step 3 Power Down Control for Southbridge */
-	reg = nbpcie_p_read_index(dev, 0xa2);
 
-	switch ((reg >> 4) & 0x7) {	/* get bit 4-6, LC_LINK_WIDTH_RD */
-	case 1:
-		nbpcie_ind_write_index(nb_dev, 0x65, 0x0e0e);
-		break;
-	case 2:
-		nbpcie_ind_write_index(nb_dev, 0x65, 0x0c0c);
-		break;
-	default:
-		break;
+        if (!cfg->gfx_tmds){
+		/* step 3 Power Down Control for Southbridge */
+		reg = nbpcie_p_read_index(dev, 0xa2);
+
+		switch ((reg >> 4) & 0x7) {	/* get bit 4-6, LC_LINK_WIDTH_RD */
+		case 1:
+			nbpcie_ind_write_index(nb_dev, 0x65, 0x0e0e);
+			break;
+		case 2:
+			nbpcie_ind_write_index(nb_dev, 0x65, 0x0c0c);
+			break;
+		default:
+			break;
+		}
 	}
 }