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authorKane Chen <kane.chen@intel.com>2015-10-26 13:02:33 +0800
committerMartin Roth <martinroth@google.com>2016-01-19 17:41:20 +0100
commit54093e4fce280faf85fcaa2f1d14833845895022 (patch)
tree70329e94f05d489afec7f4801c51cc79fc5d90b9 /src/soc
parenta1b3547f0f6e08ad2c83c0224e375217bf187120 (diff)
downloadcoreboot-54093e4fce280faf85fcaa2f1d14833845895022.tar.xz
Braswell: add code to support customization of I2C data hold time
The I2C data hold time can be vary on different boards/devices. So, it needs to be customized by boards/devices TEST=compile ok and check IC_SDA_HOLD is changed if the hold time is defined in onboard.h Original-Reviewed-on: https://chromium-review.googlesource.com/308623 Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org> Change-Id: I66c799de400670916cebbcb529d4f59d5b0f081b Signed-off-by: Kane Chen <kane.chen@intel.com> Reviewed-on: https://review.coreboot.org/12740 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth <martinroth@google.com>
Diffstat (limited to 'src/soc')
-rw-r--r--src/soc/intel/braswell/acpi/lpss.asl59
1 files changed, 45 insertions, 14 deletions
diff --git a/src/soc/intel/braswell/acpi/lpss.asl b/src/soc/intel/braswell/acpi/lpss.asl
index a2d5f3f73b..34d1e4ddeb 100644
--- a/src/soc/intel/braswell/acpi/lpss.asl
+++ b/src/soc/intel/braswell/acpi/lpss.asl
@@ -14,6 +14,37 @@
* GNU General Public License for more details.
*/
+/* The below definitions are used for customization
+ * Some boards/devices may need different data hold time
+ */
+#ifndef BOARD_I2C1_DATA_HOLD_TIME
+#define BOARD_I2C1_DATA_HOLD_TIME 6
+#endif
+
+#ifndef BOARD_I2C2_DATA_HOLD_TIME
+#define BOARD_I2C2_DATA_HOLD_TIME 6
+#endif
+
+#ifndef BOARD_I2C3_DATA_HOLD_TIME
+#define BOARD_I2C3_DATA_HOLD_TIME 6
+#endif
+
+#ifndef BOARD_I2C4_DATA_HOLD_TIME
+#define BOARD_I2C4_DATA_HOLD_TIME 6
+#endif
+
+#ifndef BOARD_I2C5_DATA_HOLD_TIME
+#define BOARD_I2C5_DATA_HOLD_TIME 6
+#endif
+
+#ifndef BOARD_I2C6_DATA_HOLD_TIME
+#define BOARD_I2C6_DATA_HOLD_TIME 6
+#endif
+
+#ifndef BOARD_I2C7_DATA_HOLD_TIME
+#define BOARD_I2C7_DATA_HOLD_TIME 6
+#endif
+
Device (SDM1)
{
Name (_HID, "INTL9C60")
@@ -85,10 +116,10 @@ Device (I2C1)
Name (_DDN, "I2C Controller #1")
/* Standard Mode: HCNT, LCNT, SDA Hold Time */
- Name (SSCN, Package () { 0x200, 0x200, 0x6 })
+ Name (SSCN, Package () { 0x200, 0x200, BOARD_I2C1_DATA_HOLD_TIME })
/* Fast Mode: HCNT, LCNT, SDA Hold Time */
- Name (FMCN, Package () { 0x55, 0x99, 0x6 })
+ Name (FMCN, Package () { 0x55, 0x99, BOARD_I2C1_DATA_HOLD_TIME })
Name (RBUF, ResourceTemplate()
{
@@ -144,10 +175,10 @@ Device (I2C2)
Name (_DDN, "I2C Controller #2")
/* Standard Mode: HCNT, LCNT, SDA Hold Time */
- Name (SSCN, Package () { 0x200, 0x200, 0x6 })
+ Name (SSCN, Package () { 0x200, 0x200, BOARD_I2C2_DATA_HOLD_TIME })
/* Fast Mode: HCNT, LCNT, SDA Hold Time */
- Name (FMCN, Package () { 0x55, 0x99, 0x6 })
+ Name (FMCN, Package () { 0x55, 0x99, BOARD_I2C2_DATA_HOLD_TIME })
Name (RBUF, ResourceTemplate()
{
@@ -203,10 +234,10 @@ Device (I2C3)
Name (_DDN, "I2C Controller #3")
/* Standard Mode: HCNT, LCNT, SDA Hold Time */
- Name (SSCN, Package () { 0x200, 0x200, 0x6 })
+ Name (SSCN, Package () { 0x200, 0x200, BOARD_I2C3_DATA_HOLD_TIME })
/* Fast Mode: HCNT, LCNT, SDA Hold Time */
- Name (FMCN, Package () { 0x55, 0x99, 0x6 })
+ Name (FMCN, Package () { 0x55, 0x99, BOARD_I2C3_DATA_HOLD_TIME })
Name (RBUF, ResourceTemplate()
{
@@ -262,10 +293,10 @@ Device (I2C4)
Name (_DDN, "I2C Controller #4")
/* Standard Mode: HCNT, LCNT, SDA Hold Time */
- Name (SSCN, Package () { 0x200, 0x200, 0x6 })
+ Name (SSCN, Package () { 0x200, 0x200, BOARD_I2C4_DATA_HOLD_TIME })
/* Fast Mode: HCNT, LCNT, SDA Hold Time */
- Name (FMCN, Package () { 0x55, 0x99, 0x6 })
+ Name (FMCN, Package () { 0x55, 0x99, BOARD_I2C4_DATA_HOLD_TIME })
Name (RBUF, ResourceTemplate()
{
@@ -321,10 +352,10 @@ Device (I2C5)
Name (_DDN, "I2C Controller #5")
/* Standard Mode: HCNT, LCNT, SDA Hold Time */
- Name (SSCN, Package () { 0x200, 0x200, 0x6 })
+ Name (SSCN, Package () { 0x200, 0x200, BOARD_I2C5_DATA_HOLD_TIME })
/* Fast Mode: HCNT, LCNT, SDA Hold Time */
- Name (FMCN, Package () { 0x55, 0x99, 0x6 })
+ Name (FMCN, Package () { 0x55, 0x99, BOARD_I2C5_DATA_HOLD_TIME })
Name (RBUF, ResourceTemplate()
{
@@ -380,10 +411,10 @@ Device (I2C6)
Name (_DDN, "I2C Controller #6")
/* Standard Mode: HCNT, LCNT, SDA Hold Time */
- Name (SSCN, Package () { 0x200, 0x200, 0x6 })
+ Name (SSCN, Package () { 0x200, 0x200, BOARD_I2C6_DATA_HOLD_TIME })
/* Fast Mode: HCNT, LCNT, SDA Hold Time */
- Name (FMCN, Package () { 0x55, 0x99, 0x6 })
+ Name (FMCN, Package () { 0x55, 0x99, BOARD_I2C6_DATA_HOLD_TIME })
Name (RBUF, ResourceTemplate()
{
@@ -439,10 +470,10 @@ Device (I2C7)
Name (_DDN, "I2C Controller #7")
/* Standard Mode: HCNT, LCNT, SDA Hold Time */
- Name (SSCN, Package () { 0x200, 0x200, 0x6 })
+ Name (SSCN, Package () { 0x200, 0x200, BOARD_I2C7_DATA_HOLD_TIME })
/* Fast Mode: HCNT, LCNT, SDA Hold Time */
- Name (FMCN, Package () { 0x55, 0x99, 0x6 })
+ Name (FMCN, Package () { 0x55, 0x99, BOARD_I2C7_DATA_HOLD_TIME })
Name (RBUF, ResourceTemplate()
{