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| author | Werner Zeh <werner.zeh@siemens.com> | 2016-12-01 10:57:34 +0100 |
|---|---|---|
| committer | Werner Zeh <werner.zeh@siemens.com> | 2016-12-06 09:59:21 +0100 |
| commit | 0575a4f8ee311a04ec2375f683d8efbcbd01396d (patch) | |
| tree | b53814eaed069acc91f25028cf2ccd8a8eff55fd | |
| parent | 8f91623db98961c4434aa0bdc0195ef848e58975 (diff) | |
| download | coreboot-0575a4f8ee311a04ec2375f683d8efbcbd01396d.tar.xz | |
mc_tcu3: Do not abort initialization of PTN3460 when HW-ID is missing
Do not abort the initialization of PTN3460 if HW-ID could not be
retrieved and just assume that the HW-ID does not match 7.9.2.0.
In this case PTN3460 will be setup to a working condition even
if this field is missing.
This makes this driver more robust with faulty blocks.
Change-Id: I301fb165a7924768e44182d92be820294beb0280
Signed-off-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-on: https://review.coreboot.org/17671
Tested-by: build bot (Jenkins)
Reviewed-by: Mario Scheithauer <mario.scheithauer@siemens.com>
| -rw-r--r-- | src/mainboard/siemens/mc_tcu3/ptn3460.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/src/mainboard/siemens/mc_tcu3/ptn3460.c b/src/mainboard/siemens/mc_tcu3/ptn3460.c index cd59492582..347bc9ca37 100644 --- a/src/mainboard/siemens/mc_tcu3/ptn3460.c +++ b/src/mainboard/siemens/mc_tcu3/ptn3460.c @@ -58,11 +58,6 @@ int ptn3460_init(char *hwi_block) hwi_block); return 1; } - if (hwilib_get_field(HWID, hwid, sizeof(hwid)) != sizeof(hwid)) { - printk(BIOS_ERR, "LCD: Missing HW-ID from %s\n", - hwi_block); - return 1; - } /* Here, all the desired information for setting up DP2LVDS converter*/ /* are present. Inside the converter, table 6 will be used for */ /* the timings. */ @@ -85,10 +80,12 @@ int ptn3460_init(char *hwi_block) cfg.lvds_interface_ctrl1 |= 0x20; /* Use 18 bits per pixel */ cfg.lvds_interface_ctrl2 = 0x03; /* no clock spreading, 300 mV LVDS swing */ - if (memcmp(hwid, tcu31_hwid, sizeof(hwid))) - cfg.lvds_interface_ctrl3 = 0x00; /* no LVDS signal swap */ - else + /* Swap LVDS even and odd lanes for HW-ID 7.9.2.0 only. */ + if (hwilib_get_field(HWID, hwid, sizeof(hwid)) == sizeof(hwid) && + !(memcmp(hwid, tcu31_hwid, sizeof(hwid)))) { cfg.lvds_interface_ctrl3 = 0x01; /* swap LVDS even and odd */ + } else + cfg.lvds_interface_ctrl3 = 0x00; /* no LVDS signal swap */ cfg.t2_delay = 1; /* Delay T2 (VDD to LVDS active) by 16 ms */ cfg.t3_timing = 10; /* 500 ms from LVDS to backlight active */ cfg.t12_timing = 20; /* 1 second re-power delay */ |