acpi/ec: Add missing delays
Without these delays on fast systems like X230 the port is read before it's
updated.
Change-Id: I3e01fc348cc5170cec108a05095ba301055ed6b0
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/4617
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
diff --git a/src/ec/acpi/ec.c b/src/ec/acpi/ec.c
index ab287d6..634d2bb 100644
--- a/src/ec/acpi/ec.c
+++ b/src/ec/acpi/ec.c
@@ -53,6 +53,8 @@
// return -1;
}
+ udelay(10);
+
outb(command, ec_cmd_reg);
return 0;
}
@@ -73,6 +75,8 @@
// return -1;
}
+ udelay(10);
+
outb(data, ec_data_reg);
return 0;
@@ -104,6 +108,8 @@
// return -1;
}
+ udelay(10);
+
data = inb(ec_data_reg);
printk(BIOS_SPEW, "recv_ec_data: 0x%02x\n", data);