commit 58afc202b1b29898f68f239ec7e50ac532b5d46c
author Nico Huber <nico.huber@secunet.com> Mon Jun 12 21:34:55 2017 +0200
committer Nico Huber <nico.h@gmx.de> Tue Jul 25 20:23:59 2017 +0000
tree bce198ed9feb3b08fdb1412531e0867c139976ad
parent 18ff0c13b740f4153f39dfeb5b9af474bfa13e0a

gma skl: Add I_boost configuration

Hardcoded to 1 since we don't support Skylake-Y (ULX).

Change-Id: I22fa056531cac18828c867f9c9f5745ec424d38c
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/20168
Tested-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

common/haswell_shared/hw-gfx-gma-connectors-ddi.adb

diff --git a/common/haswell_shared/hw-gfx-gma-connectors-ddi.adb b/common/haswell_shared/hw-gfx-gma-connectors-ddi.adb
index 091f36d..0fc4ad9 100644
--- a/common/haswell_shared/hw-gfx-gma-connectors-ddi.adb
+++ b/common/haswell_shared/hw-gfx-gma-connectors-ddi.adb
@@ -95,6 +95,18 @@
       HW.GFX.DP_Bandwidth_2_7  => PORT_CLK_SEL_LCPLL1350,
       HW.GFX.DP_Bandwidth_5_4  => PORT_CLK_SEL_LCPLL2700);
 
+   DISPIO_CR_TX_BLNC_LEG_DISBL_MASK    : constant := 16#1f# * 2 ** 23;
+   DISPIO_CR_TX_BLNC_LEG_SCTL_4_SHIFT  : constant :=               20;
+   DISPIO_CR_TX_BLNC_LEG_SCTL_4_MASK   : constant := 16#07# * 2 ** 20;
+   DISPIO_CR_TX_BLNC_LEG_SCTL_3_SHIFT  : constant :=               17;
+   DISPIO_CR_TX_BLNC_LEG_SCTL_3_MASK   : constant := 16#07# * 2 ** 17;
+   DISPIO_CR_TX_BLNC_LEG_SCTL_2_SHIFT  : constant :=               14;
+   DISPIO_CR_TX_BLNC_LEG_SCTL_2_MASK   : constant := 16#07# * 2 ** 14;
+   DISPIO_CR_TX_BLNC_LEG_SCTL_1_SHIFT  : constant :=               11;
+   DISPIO_CR_TX_BLNC_LEG_SCTL_1_MASK   : constant := 16#07# * 2 ** 11;
+   DISPIO_CR_TX_BLNC_LEG_SCTL_0_SHIFT  : constant :=                8;
+   DISPIO_CR_TX_BLNC_LEG_SCTL_0_MASK   : constant := 16#07# * 2 **  8;
+
    type DDI_Buf_Trans_Regs_Array
       is array (Buf_Trans_Range) of Registers.Registers_Index;
 
@@ -298,6 +310,7 @@
 
    procedure Initialize
    is
+      Iboost_Value : constant Word32 := 1;
    begin
       if Config.Has_DDI_Buffer_Trans then
          for Port in Digital_Port range DIGI_A .. Config.Last_Digital_Port loop
@@ -307,6 +320,23 @@
             Program_Buffer_Translations (DIGI_E);
          end if;
       end if;
+
+      if Config.Has_Iboost_Config then
+         Registers.Unset_And_Set_Mask
+           (Register    => Registers.DISPIO_CR_TX_BMU_CR0,
+            Mask_Unset  => DISPIO_CR_TX_BLNC_LEG_DISBL_MASK or
+                           DISPIO_CR_TX_BLNC_LEG_SCTL_4_MASK or
+                           DISPIO_CR_TX_BLNC_LEG_SCTL_3_MASK or
+                           DISPIO_CR_TX_BLNC_LEG_SCTL_2_MASK or
+                           DISPIO_CR_TX_BLNC_LEG_SCTL_1_MASK or
+                           DISPIO_CR_TX_BLNC_LEG_SCTL_0_MASK,
+            Mask_Set    =>
+               Shift_Left (Iboost_Value, DISPIO_CR_TX_BLNC_LEG_SCTL_4_SHIFT) or
+               Shift_Left (Iboost_Value, DISPIO_CR_TX_BLNC_LEG_SCTL_3_SHIFT) or
+               Shift_Left (Iboost_Value, DISPIO_CR_TX_BLNC_LEG_SCTL_2_SHIFT) or
+               Shift_Left (Iboost_Value, DISPIO_CR_TX_BLNC_LEG_SCTL_1_SHIFT) or
+               Shift_Left (Iboost_Value, DISPIO_CR_TX_BLNC_LEG_SCTL_0_SHIFT));
+      end if;
    end Initialize;
 
    ----------------------------------------------------------------------------