Re: [PATCH v2 1/2] drm/i915/icl: Add remaining registers and bitfields for MG PHY DDI

["Srivatsa, Anusha" <anusha.srivatsa@intel.com>]

________________________________________
From: Intel-gfx [intel-gfx-bounces@lists.freedesktop.org] on behalf of Manasi Navare [manasi.d.navare@intel.com]
Sent: Thursday, June 28, 2018 3:35 PM
To: intel-gfx@lists.freedesktop.org
Cc: Zanoni, Paulo R
Subject: [Intel-gfx] [PATCH v2 1/2] drm/i915/icl: Add remaining registers and bitfields for MG PHY DDI

This patch adds the remaining register definitions and bit fields
required for MG PHy DDI buffer initializations and voltage
swing programming for MG PHy DDI ports.

While at it this patch also fixes the naming for previously defined
MG PHY registers in original commit id (c92f47b5ec977a "drm/i915/icl:
Add register defs for voltage swing sequences for MG PHY DDI").
Since the MG PHY registers are first defined in ICL platform, there
is no need for _ICL prefix.

v2:
* Change the MG_TX_DRVCTL registers names to match the spec (Anusha)

Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: James Ausmus <james.ausmus@intel.com>

checked with Spec. Patch looks good.
Reviewed-by: Anusha Srivatsa <anusha.srivatsa@intel.com>

---
 drivers/gpu/drm/i915/i915_reg.h | 246 +++++++++++++++++++++++-----------------
 1 file changed, 145 insertions(+), 101 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index c30cfcd..6119acc 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -1872,121 +1872,165 @@ enum i915_power_well_id {
 #define   N_SCALAR(x)                  ((x) << 24)
 #define   N_SCALAR_MASK                        (0x7F << 24)

-#define _ICL_MG_PHY_PORT_LN(port, ln, ln0p1, ln0p2, ln1p1) \
+#define MG_PHY_PORT_LN(port, ln, ln0p1, ln0p2, ln1p1) \
        _MMIO(_PORT((port) - PORT_C, ln0p1, ln0p2) + (ln) * ((ln1p1) - (ln0p1)))

-#define _ICL_MG_TX_LINK_PARAMS_TX1LN0_PORT1            0x16812C
-#define _ICL_MG_TX_LINK_PARAMS_TX1LN1_PORT1            0x16852C
-#define _ICL_MG_TX_LINK_PARAMS_TX1LN0_PORT2            0x16912C
-#define _ICL_MG_TX_LINK_PARAMS_TX1LN1_PORT2            0x16952C
-#define _ICL_MG_TX_LINK_PARAMS_TX1LN0_PORT3            0x16A12C
-#define _ICL_MG_TX_LINK_PARAMS_TX1LN1_PORT3            0x16A52C
-#define _ICL_MG_TX_LINK_PARAMS_TX1LN0_PORT4            0x16B12C
-#define _ICL_MG_TX_LINK_PARAMS_TX1LN1_PORT4            0x16B52C
-#define ICL_PORT_MG_TX1_LINK_PARAMS(port, ln) \
-       _ICL_MG_PHY_PORT_LN(port, ln, _ICL_MG_TX_LINK_PARAMS_TX1LN0_PORT1, \
-                                     _ICL_MG_TX_LINK_PARAMS_TX1LN0_PORT2, \
-                                     _ICL_MG_TX_LINK_PARAMS_TX1LN1_PORT1)
-
-#define _ICL_MG_TX_LINK_PARAMS_TX2LN0_PORT1            0x1680AC
-#define _ICL_MG_TX_LINK_PARAMS_TX2LN1_PORT1            0x1684AC
-#define _ICL_MG_TX_LINK_PARAMS_TX2LN0_PORT2            0x1690AC
-#define _ICL_MG_TX_LINK_PARAMS_TX2LN1_PORT2            0x1694AC
-#define _ICL_MG_TX_LINK_PARAMS_TX2LN0_PORT3            0x16A0AC
-#define _ICL_MG_TX_LINK_PARAMS_TX2LN1_PORT3            0x16A4AC
-#define _ICL_MG_TX_LINK_PARAMS_TX2LN0_PORT4            0x16B0AC
-#define _ICL_MG_TX_LINK_PARAMS_TX2LN1_PORT4            0x16B4AC
-#define ICL_PORT_MG_TX2_LINK_PARAMS(port, ln) \
-       _ICL_MG_PHY_PORT_LN(port, ln, _ICL_MG_TX_LINK_PARAMS_TX2LN0_PORT1, \
-                                     _ICL_MG_TX_LINK_PARAMS_TX2LN0_PORT2, \
-                                     _ICL_MG_TX_LINK_PARAMS_TX2LN1_PORT1)
+#define MG_TX_LINK_PARAMS_TX1LN0_PORT1         0x16812C
+#define MG_TX_LINK_PARAMS_TX1LN1_PORT1         0x16852C
+#define MG_TX_LINK_PARAMS_TX1LN0_PORT2         0x16912C
+#define MG_TX_LINK_PARAMS_TX1LN1_PORT2         0x16952C
+#define MG_TX_LINK_PARAMS_TX1LN0_PORT3         0x16A12C
+#define MG_TX_LINK_PARAMS_TX1LN1_PORT3         0x16A52C
+#define MG_TX_LINK_PARAMS_TX1LN0_PORT4         0x16B12C
+#define _MG_TX_LINK_PARAMS_TX1LN1_PORT4                0x16B52C
+#define MG_TX1_LINK_PARAMS(port, ln) \
+       MG_PHY_PORT_LN(port, ln, MG_TX_LINK_PARAMS_TX1LN0_PORT1, \
+                                MG_TX_LINK_PARAMS_TX1LN0_PORT2, \
+                                MG_TX_LINK_PARAMS_TX1LN1_PORT1)
+
+#define MG_TX_LINK_PARAMS_TX2LN0_PORT1         0x1680AC
+#define MG_TX_LINK_PARAMS_TX2LN1_PORT1         0x1684AC
+#define MG_TX_LINK_PARAMS_TX2LN0_PORT2         0x1690AC
+#define MG_TX_LINK_PARAMS_TX2LN1_PORT2         0x1694AC
+#define MG_TX_LINK_PARAMS_TX2LN0_PORT3         0x16A0AC
+#define MG_TX_LINK_PARAMS_TX2LN1_PORT3         0x16A4AC
+#define MG_TX_LINK_PARAMS_TX2LN0_PORT4         0x16B0AC
+#define MG_TX_LINK_PARAMS_TX2LN1_PORT4         0x16B4AC
+#define MG_TX2_LINK_PARAMS(port, ln) \
+       MG_PHY_PORT_LN(port, ln, MG_TX_LINK_PARAMS_TX2LN0_PORT1, \
+                                MG_TX_LINK_PARAMS_TX2LN0_PORT2, \
+                                MG_TX_LINK_PARAMS_TX2LN1_PORT1)
 #define CRI_USE_FS32                   (1 << 5)

-#define _ICL_MG_TX_PISO_READLOAD_TX1LN0_PORT1          0x16814C
-#define _ICL_MG_TX_PISO_READLOAD_TX1LN1_PORT1          0x16854C
-#define _ICL_MG_TX_PISO_READLOAD_TX1LN0_PORT2          0x16914C
-#define _ICL_MG_TX_PISO_READLOAD_TX1LN1_PORT2          0x16954C
-#define _ICL_MG_TX_PISO_READLOAD_TX1LN0_PORT3          0x16A14C
-#define _ICL_MG_TX_PISO_READLOAD_TX1LN1_PORT3          0x16A54C
-#define _ICL_MG_TX_PISO_READLOAD_TX1LN0_PORT4          0x16B14C
-#define _ICL_MG_TX_PISO_READLOAD_TX1LN1_PORT4          0x16B54C
-#define ICL_PORT_MG_TX1_PISO_READLOAD(port, ln) \
-       _ICL_MG_PHY_PORT_LN(port, ln, _ICL_MG_TX_PISO_READLOAD_TX1LN0_PORT1, \
-                                     _ICL_MG_TX_PISO_READLOAD_TX1LN0_PORT2, \
-                                     _ICL_MG_TX_PISO_READLOAD_TX1LN1_PORT1)
-
-#define _ICL_MG_TX_PISO_READLOAD_TX2LN0_PORT1          0x1680CC
-#define _ICL_MG_TX_PISO_READLOAD_TX2LN1_PORT1          0x1684CC
-#define _ICL_MG_TX_PISO_READLOAD_TX2LN0_PORT2          0x1690CC
-#define _ICL_MG_TX_PISO_READLOAD_TX2LN1_PORT2          0x1694CC
-#define _ICL_MG_TX_PISO_READLOAD_TX2LN0_PORT3          0x16A0CC
-#define _ICL_MG_TX_PISO_READLOAD_TX2LN1_PORT3          0x16A4CC
-#define _ICL_MG_TX_PISO_READLOAD_TX2LN0_PORT4          0x16B0CC
-#define _ICL_MG_TX_PISO_READLOAD_TX2LN1_PORT4          0x16B4CC
-#define ICL_PORT_MG_TX2_PISO_READLOAD(port, ln) \
-       _ICL_MG_PHY_PORT_LN(port, ln, _ICL_MG_TX_PISO_READLOAD_TX2LN0_PORT1, \
-                                     _ICL_MG_TX_PISO_READLOAD_TX2LN0_PORT2, \
-                                     _ICL_MG_TX_PISO_READLOAD_TX2LN1_PORT1)
+#define MG_TX_PISO_READLOAD_TX1LN0_PORT1               0x16814C
+#define MG_TX_PISO_READLOAD_TX1LN1_PORT1               0x16854C
+#define MG_TX_PISO_READLOAD_TX1LN0_PORT2               0x16914C
+#define MG_TX_PISO_READLOAD_TX1LN1_PORT2               0x16954C
+#define MG_TX_PISO_READLOAD_TX1LN0_PORT3               0x16A14C
+#define MG_TX_PISO_READLOAD_TX1LN1_PORT3               0x16A54C
+#define MG_TX_PISO_READLOAD_TX1LN0_PORT4               0x16B14C
+#define MG_TX_PISO_READLOAD_TX1LN1_PORT4               0x16B54C
+#define MG_TX1_PISO_READLOAD(port, ln) \
+       MG_PHY_PORT_LN(port, ln, MG_TX_PISO_READLOAD_TX1LN0_PORT1, \
+                                MG_TX_PISO_READLOAD_TX1LN0_PORT2, \
+                                MG_TX_PISO_READLOAD_TX1LN1_PORT1)
+
+#define MG_TX_PISO_READLOAD_TX2LN0_PORT1               0x1680CC
+#define MG_TX_PISO_READLOAD_TX2LN1_PORT1               0x1684CC
+#define MG_TX_PISO_READLOAD_TX2LN0_PORT2               0x1690CC
+#define MG_TX_PISO_READLOAD_TX2LN1_PORT2               0x1694CC
+#define MG_TX_PISO_READLOAD_TX2LN0_PORT3               0x16A0CC
+#define MG_TX_PISO_READLOAD_TX2LN1_PORT3               0x16A4CC
+#define MG_TX_PISO_READLOAD_TX2LN0_PORT4               0x16B0CC
+#define MG_TX_PISO_READLOAD_TX2LN1_PORT4               0x16B4CC
+#define MG_TX2_PISO_READLOAD(port, ln) \
+       MG_PHY_PORT_LN(port, ln, MG_TX_PISO_READLOAD_TX2LN0_PORT1, \
+                                MG_TX_PISO_READLOAD_TX2LN0_PORT2, \
+                                MG_TX_PISO_READLOAD_TX2LN1_PORT1)
 #define CRI_CALCINIT                                   (1 << 1)

-#define _ICL_MG_TX_SWINGCTRL_TX1LN0_PORT1              0x168148
-#define _ICL_MG_TX_SWINGCTRL_TX1LN1_PORT1              0x168548
-#define _ICL_MG_TX_SWINGCTRL_TX1LN0_PORT2              0x169148
-#define _ICL_MG_TX_SWINGCTRL_TX1LN1_PORT2              0x169548
-#define _ICL_MG_TX_SWINGCTRL_TX1LN0_PORT3              0x16A148
-#define _ICL_MG_TX_SWINGCTRL_TX1LN1_PORT3              0x16A548
-#define _ICL_MG_TX_SWINGCTRL_TX1LN0_PORT4              0x16B148
-#define _ICL_MG_TX_SWINGCTRL_TX1LN1_PORT4              0x16B548
-#define ICL_PORT_MG_TX1_SWINGCTRL(port, ln) \
-       _ICL_MG_PHY_PORT_LN(port, ln, _ICL_MG_TX_SWINGCTRL_TX1LN0_PORT1, \
-                                     _ICL_MG_TX_SWINGCTRL_TX1LN0_PORT2, \
-                                     _ICL_MG_TX_SWINGCTRL_TX1LN1_PORT1)
-
-#define _ICL_MG_TX_SWINGCTRL_TX2LN0_PORT1              0x1680C8
-#define _ICL_MG_TX_SWINGCTRL_TX2LN1_PORT1              0x1684C8
-#define _ICL_MG_TX_SWINGCTRL_TX2LN0_PORT2              0x1690C8
-#define _ICL_MG_TX_SWINGCTRL_TX2LN1_PORT2              0x1694C8
-#define _ICL_MG_TX_SWINGCTRL_TX2LN0_PORT3              0x16A0C8
-#define _ICL_MG_TX_SWINGCTRL_TX2LN1_PORT3              0x16A4C8
-#define _ICL_MG_TX_SWINGCTRL_TX2LN0_PORT4              0x16B0C8
-#define _ICL_MG_TX_SWINGCTRL_TX2LN1_PORT4              0x16B4C8
-#define ICL_PORT_MG_TX2_SWINGCTRL(port, ln) \
-       _ICL_MG_PHY_PORT_LN(port, ln, _ICL_MG_TX_SWINGCTRL_TX2LN0_PORT1, \
-                                     _ICL_MG_TX_SWINGCTRL_TX2LN0_PORT2, \
-                                     _ICL_MG_TX_SWINGCTRL_TX2LN1_PORT1)
+#define MG_TX_SWINGCTRL_TX1LN0_PORT1           0x168148
+#define MG_TX_SWINGCTRL_TX1LN1_PORT1           0x168548
+#define MG_TX_SWINGCTRL_TX1LN0_PORT2           0x169148
+#define MG_TX_SWINGCTRL_TX1LN1_PORT2           0x169548
+#define MG_TX_SWINGCTRL_TX1LN0_PORT3           0x16A148
+#define MG_TX_SWINGCTRL_TX1LN1_PORT3           0x16A548
+#define MG_TX_SWINGCTRL_TX1LN0_PORT4           0x16B148
+#define MG_TX_SWINGCTRL_TX1LN1_PORT4           0x16B548
+#define MG_TX1_SWINGCTRL(port, ln) \
+       MG_PHY_PORT_LN(port, ln, MG_TX_SWINGCTRL_TX1LN0_PORT1, \
+                                MG_TX_SWINGCTRL_TX1LN0_PORT2, \
+                                MG_TX_SWINGCTRL_TX1LN1_PORT1)
+
+#define MG_TX_SWINGCTRL_TX2LN0_PORT1           0x1680C8
+#define MG_TX_SWINGCTRL_TX2LN1_PORT1           0x1684C8
+#define MG_TX_SWINGCTRL_TX2LN0_PORT2           0x1690C8
+#define MG_TX_SWINGCTRL_TX2LN1_PORT2           0x1694C8
+#define MG_TX_SWINGCTRL_TX2LN0_PORT3           0x16A0C8
+#define MG_TX_SWINGCTRL_TX2LN1_PORT3           0x16A4C8
+#define MG_TX_SWINGCTRL_TX2LN0_PORT4           0x16B0C8
+#define MG_TX_SWINGCTRL_TX2LN1_PORT4           0x16B4C8
+#define MG_TX2_SWINGCTRL(port, ln) \
+       MG_PHY_PORT_LN(port, ln, MG_TX_SWINGCTRL_TX2LN0_PORT1, \
+                                MG_TX_SWINGCTRL_TX2LN0_PORT2, \
+                                MG_TX_SWINGCTRL_TX2LN1_PORT1)
 #define CRI_TXDEEMPH_OVERRIDE_17_12(x)                 ((x) << 0)
 #define CRI_TXDEEMPH_OVERRIDE_17_12_MASK               (0x3F << 0)

-#define _ICL_MG_TX_DRVCTRL_TX1LN0_PORT1                        0x168144
-#define _ICL_MG_TX_DRVCTRL_TX1LN1_PORT1                        0x168544
-#define _ICL_MG_TX_DRVCTRL_TX1LN0_PORT2                        0x169144
-#define _ICL_MG_TX_DRVCTRL_TX1LN1_PORT2                        0x169544
-#define _ICL_MG_TX_DRVCTRL_TX1LN0_PORT3                        0x16A144
-#define _ICL_MG_TX_DRVCTRL_TX1LN1_PORT3                        0x16A544
-#define _ICL_MG_TX_DRVCTRL_TX1LN0_PORT4                        0x16B144
-#define _ICL_MG_TX_DRVCTRL_TX1LN1_PORT4                        0x16B544
-#define ICL_PORT_MG_TX1_DRVCTRL(port, ln) \
-       _ICL_MG_PHY_PORT_LN(port, ln, _ICL_MG_TX_DRVCTRL_TX1LN0_PORT1, \
-                                     _ICL_MG_TX_DRVCTRL_TX1LN0_PORT2, \
-                                     _ICL_MG_TX_DRVCTRL_TX1LN1_PORT1)
-
-#define _ICL_MG_TX_DRVCTRL_TX2LN0_PORT1                        0x1680C4
-#define _ICL_MG_TX_DRVCTRL_TX2LN1_PORT1                        0x1684C4
-#define _ICL_MG_TX_DRVCTRL_TX2LN0_PORT2                        0x1690C4
-#define _ICL_MG_TX_DRVCTRL_TX2LN1_PORT2                        0x1694C4
-#define _ICL_MG_TX_DRVCTRL_TX2LN0_PORT3                        0x16A0C4
-#define _ICL_MG_TX_DRVCTRL_TX2LN1_PORT3                        0x16A4C4
-#define _ICL_MG_TX_DRVCTRL_TX2LN0_PORT4                        0x16B0C4
-#define _ICL_MG_TX_DRVCTRL_TX2LN1_PORT4                        0x16B4C4
-#define ICL_PORT_MG_TX2_DRVCTRL(port, ln) \
-       _ICL_MG_PHY_PORT_LN(port, ln, _ICL_MG_TX_DRVCTRL_TX2LN0_PORT1, \
-                                     _ICL_MG_TX_DRVCTRL_TX2LN0_PORT2, \
-                                     _ICL_MG_TX_DRVCTRL_TX2LN1_PORT1)
+#define MG_TX_DRVCTRL_TX1LN0_TXPORT1                   0x168144
+#define MG_TX_DRVCTRL_TX1LN1_TXPORT1                   0x168544
+#define MG_TX_DRVCTRL_TX1LN0_TXPORT2                   0x169144
+#define MG_TX_DRVCTRL_TX1LN1_TXPORT2                   0x169544
+#define MG_TX_DRVCTRL_TX1LN0_TXPORT3                   0x16A144
+#define MG_TX_DRVCTRL_TX1LN1_TXPORT3                   0x16A544
+#define MG_TX_DRVCTRL_TX1LN0_TXPORT4                   0x16B144
+#define MG_TX_DRVCTRL_TX1LN1_TXPORT4                   0x16B544
+#define MG_TX1_DRVCTRL(port, ln) \
+       MG_PHY_PORT_LN(port, ln, MG_TX_DRVCTRL_TX1LN0_TXPORT1, \
+                                MG_TX_DRVCTRL_TX1LN0_TXPORT2, \
+                                MG_TX_DRVCTRL_TX1LN1_TXPORT1)
+
+#define MG_TX_DRVCTRL_TX2LN0_PORT1                     0x1680C4
+#define MG_TX_DRVCTRL_TX2LN1_PORT1                     0x1684C4
+#define MG_TX_DRVCTRL_TX2LN0_PORT2                     0x1690C4
+#define MG_TX_DRVCTRL_TX2LN1_PORT2                     0x1694C4
+#define MG_TX_DRVCTRL_TX2LN0_PORT3                     0x16A0C4
+#define MG_TX_DRVCTRL_TX2LN1_PORT3                     0x16A4C4
+#define MG_TX_DRVCTRL_TX2LN0_PORT4                     0x16B0C4
+#define MG_TX_DRVCTRL_TX2LN1_PORT4                     0x16B4C4
+#define MG_TX2_DRVCTRL(port, ln) \
+       MG_PHY_PORT_LN(port, ln, MG_TX_DRVCTRL_TX2LN0_PORT1, \
+                                MG_TX_DRVCTRL_TX2LN0_PORT2, \
+                                MG_TX_DRVCTRL_TX2LN1_PORT1)
 #define CRI_TXDEEMPH_OVERRIDE_11_6(x)                  ((x) << 24)
 #define CRI_TXDEEMPH_OVERRIDE_11_6_MASK                        (0x3F << 24)
 #define CRI_TXDEEMPH_OVERRIDE_EN                       (1 << 22)
 #define CRI_TXDEEMPH_OVERRIDE_5_0(x)                   ((x) << 16)
 #define CRI_TXDEEMPH_OVERRIDE_5_0_MASK                 (0x3F << 16)
+#define CRI_LOADGEN_SEL(x)                             ((x) << 12)
+#define CRI_LOADGEN_SEL_MASK                           (0x3 << 12)

+#define MG_CLKHUB_LN0_PORT1                    0x16839C
+#define MG_CLKHUB_LN1_PORT1                    0x16879C
+#define MG_CLKHUB_LN0_PORT2                    0x16939C
+#define MG_CLKHUB_LN1_PORT2                    0x16979C
+#define MG_CLKHUB_LN0_PORT3                    0x16A39C
+#define MG_CLKHUB_LN1_PORT3                    0x16A79C
+#define MG_CLKHUB_LN0_PORT4                    0x16B39C
+#define MG_CLKHUB_LN1_PORT4                    0x16B79C
+#define MG_CLKHUB(port, ln) \
+       MG_PHY_PORT_LN(port, ln, MG_CLKHUB_LN0_PORT1, \
+                                MG_CLKHUB_LN0_PORT2, \
+                                MG_CLKHUB_LN1_PORT1)
+#define CFG_LOW_RATE_LKREN_EN                          (1 << 11)
+
+#define MG_TX_DCC_TX1LN0_PORT1                 0x168110
+#define MG_TX_DCC_TX1LN1_PORT1                 0x168510
+#define MG_TX_DCC_TX1LNO_PORT2                 0x169110
+#define MG_TX_DCC_TX1LN1_PORT2                 0x169510
+#define MG_TX_DCC_TX1LNO_PORT3                 0x16A110
+#define MG_TX_DCC_TX1LN1_PORT3                 0x16A510
+#define MG_TX_DCC_TX1LNO_PORT4                 0x16B110
+#define MG_TX_DCC_TX1LN1_PORT4                 0x16B510
+#define MG_TX1_DCC(port, ln) \
+       MG_PHY_PORT_LN(port, ln, MG_TX_DCC_TX1LN0_PORT1, \
+                                MG_TX_DCC_TX1LNO_PORT2, \
+                                MG_TX_DCC_TX1LN1_PORT1)
+#define MG_TX_DCC_TX2LN0_PORT1                 0x168090
+#define MG_TX_DCC_TX2LN1_PORT1                 0x168490
+#define MG_TX_DCC_TX2LNO_PORT2                 0x169090
+#define MG_TX_DCC_TX2LN1_PORT2                 0x169490
+#define MG_TX_DCC_TX2LNO_PORT3                 0x16A090
+#define MG_TX_DCC_TX2LN1_PORT3                 0x16A490
+#define MG_TX_DCC_TX2LNO_PORT4                 0x16B090
+#define MG_TX_DCC_TX2LN1_PORT4                 0x16B490
+#define MG_TX2_DCC(port, ln) \
+       MG_PHY_PORT_LN(port, ln, MG_TX_DCC_TX2LN0_PORT1, \
+                                MG_TX_DCC_TX2LNO_PORT2, \
+                                MG_TX_DCC_TX2LN1_PORT1)
+#define CFG_AMI_CK_DIV_OVERRIDE_EN             (1 << 24)
+#define CFG_AMI_CK_DIV_OVERRIDE_VAL(x)         ((x) << 25)
+#define CFG_AMI_CK_DIV_OVERRIDE_VAL_MASK       (0x3 << 25)

 /* The spec defines this only for BXT PHY0, but lets assume that this
  * would exist for PHY1 too if it had a second channel.
--
2.7.4

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