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authorVladimir Serbinenko <phcoder@gmail.com>2014-01-05 06:50:10 +0100
committerVladimir Serbinenko <phcoder@gmail.com>2014-01-12 18:06:06 +0100
commitea9181c76aaf4b07cb3de304ef8d8cdf9879b33e (patch)
tree1c37a95212b6e8241c3b1e077f359ccc3a2094f7
parentc2ee6801e89b3d4f346e075a034e04716b91d0b7 (diff)
downloadcoreboot-ea9181c76aaf4b07cb3de304ef8d8cdf9879b33e.tar.xz
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>
-rw-r--r--src/ec/acpi/ec.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/ec/acpi/ec.c b/src/ec/acpi/ec.c
index ab287d6afd..634d2bb941 100644
--- a/src/ec/acpi/ec.c
+++ b/src/ec/acpi/ec.c
@@ -53,6 +53,8 @@ int send_ec_command(u8 command)
// return -1;
}
+ udelay(10);
+
outb(command, ec_cmd_reg);
return 0;
}
@@ -73,6 +75,8 @@ int send_ec_data(u8 data)
// return -1;
}
+ udelay(10);
+
outb(data, ec_data_reg);
return 0;
@@ -104,6 +108,8 @@ u8 recv_ec_data(void)
// return -1;
}
+ udelay(10);
+
data = inb(ec_data_reg);
printk(BIOS_SPEW, "recv_ec_data: 0x%02x\n", data);