Initial commit

2026-04-23 17:07:55 +08:00
commit b7e39e063b
16725 changed files with 1625565 additions and 0 deletions
@@ -0,0 +1,31 @@
+#!/bin/sh -eu
+
+override_avs_settings()
+{
+    BUS=$1
+
+    i2cset -y "${BUS}" 0x44 0x00 0x00 b    # VCS
+    i2cset -y "${BUS}" 0x44 0x24 0x044C w  # VOUT_MAX 1100mV
+    i2cset -y "${BUS}" 0x44 0x40 0x0456 w  # VOUT_OV_FAULT_LIMIT 1110mV
+    i2cset -y "${BUS}" 0x44 0x25 0x0438 w  # VOUT_MARGING_HIGH 1080mV
+    i2cset -y "${BUS}" 0x44 0x26 0x03D4 w  # VOUT_MARGING_LOW 980mV
+    i2cset -y "${BUS}" 0x44 0x44 0x024E w  # VOUT_UV_FAULT_LIMIT 590mV
+    i2cset -y "${BUS}" 0x44 0x2B 0x0258 w  # VOUT_MIN 600mV
+
+    i2cset -y "${BUS}" 0x44 0x00 0x01 b    # VDD
+    i2cset -y "${BUS}" 0x44 0x24 0x044C w  # VOUT_MAX 1100mV
+    i2cset -y "${BUS}" 0x44 0x40 0x0456 w  # VOUT_OV_FAULT_LIMIT 1110mV
+    i2cset -y "${BUS}" 0x44 0x25 0x041A w  # VOUT_MARGING_HIGH 1050mV
+    i2cset -y "${BUS}" 0x44 0x26 0x03B6 w  # VOUT_MARGING_LOW 950mV
+    i2cset -y "${BUS}" 0x44 0x44 0x024E w  # VOUT_UV_FAULT_LIMIT 590mV
+    i2cset -y "${BUS}" 0x44 0x2B 0x0258 w  # VOUT_MIN 600mV
+
+    i2cset -y "${BUS}" 0x44 0x00 0xFF b   # All pages (VCS & VDD)
+    i2cset -y "${BUS}" 0x44 0x01 0xB0 b   # Enable
+
+    i2cset -y "${BUS}" 0x46 0x00 0x01 b    # VDN
+    i2cset -y "${BUS}" 0x46 0x01 0xB0 b    # Enable
+}
+
+override_avs_settings 4
+override_avs_settings 5
@@ -0,0 +1,20 @@
+[Unit]
+Description=Enable the AVS bus on VRMs
+Wants=obmc-host-start-pre@%i.target
+Before=obmc-host-start-pre@%i.target
+Wants=obmc-power-on@%i.target
+After=obmc-power-on@%i.target
+Wants=fsi-scan@%i.service
+After=fsi-scan@%i.service
+Conflicts=obmc-chassis-poweroff@%i.target
+ConditionPathExists=!/run/openbmc/chassis@%i-on
+
+[Service]
+ExecStart=/usr/bin/avsbus-control.sh
+SyslogIdentifier=avsbus-control.sh
+Type=oneshot
+RemainAfterExit=yes
+
+[Install]
+WantedBy=obmc-chassis-poweron@%i.target
+