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authorYu-Ping Wu <yupingso@google.com>2019-07-10 15:55:24 +0800
committerMartin Roth <martinroth@google.com>2019-07-11 15:11:06 +0000
commitbadbcde5425b587fe23f8bd6ce02c740913fdd1d (patch)
tree2ae6a0f9dfaccfed7fb1a9fb11e1d5f43d8a38b8
parente13a65c5ffd066272f1a224120bbc5788f56106c (diff)
downloadcoreboot-badbcde5425b587fe23f8bd6ce02c740913fdd1d.tar.xz
google/kukui: Adjust LCM ID voltages
Currently some of the LCM ID voltage gaps are below 100mV. For example, the voltage difference between ID 2 and 3 is 503-440=63mV. To reduce the risk of misrecognition from the hardware level, the voltages are adjusted so that all the voltage gaps are larger than 100mV. The RD2 resistor values are also updated. BUG=b:136987483 TEST=emerge-kukui coreboot Change-Id: Ib5c1f927fb54d8c9579f030e42eeec5a27daaceb Signed-off-by: Yu-Ping Wu <yupingso@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/34192 Reviewed-by: You-Cheng Syu <youcheng@google.com> Reviewed-by: Hung-Te Lin <hungte@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
-rw-r--r--src/mainboard/google/kukui/boardid.c14
1 files changed, 7 insertions, 7 deletions
diff --git a/src/mainboard/google/kukui/boardid.c b/src/mainboard/google/kukui/boardid.c
index ad066666cb..ad7fb364df 100644
--- a/src/mainboard/google/kukui/boardid.c
+++ b/src/mainboard/google/kukui/boardid.c
@@ -51,15 +51,15 @@ static const int lcm_voltages[ADC_LEVELS] = {
/* ID : Voltage (unit: uV) */
/* 0 : */ 0,
/* 1 : */ 283000,
- /* 2 : */ 440000,
+ /* 2 : */ 394000,
/* 3 : */ 503000,
/* 4 : */ 608000,
- /* 5 : */ 703000,
- /* 6 : */ 830000,
- /* 7 : */ 865000,
- /* 8 : */ 953000,
- /* 9 : */ 1079000,
- /* 10 : */ 1128000,
+ /* 5 : */ 712000,
+ /* 6 : */ 823000,
+ /* 7 : */ 937000,
+ /* 8 : */ 1046000,
+ /* 9 : */ 1155000,
+ /* 10 : */ 1277000,
/* 11 : */ 1434000,
};