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Exynos 5420: skip the EDID read if there is already an EDID.

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For many boards, the EDID is known and is set in the ramstage. Reading
the EDID is slow and if we have it we do not want to reread it.

If the raw_edid struct member is non-null, skip reading the EDID.

BUG=None
TEST=Build and boot and verify that the panel works
BRANCH=None

Change-Id: I63fb11aa90b2f739a351cdc3209faac2713ea451
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: https://chromium-review.googlesource.com/167116
Reviewed-by: Gabe Black <gabeblack@google.com>
Tested-by: ron minnich <rminnich@chromium.org>
Commit-Queue: Ronald Minnich <rminnich@google.com>
This commit is contained in:
Ronald G. Minnich 2013-08-27 14:06:19 -07:00 • committed by chrome-internal-fetch
commit 80f4865557
1 changed files with 9 additions and 4 deletions
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13
src/cpu/samsung/exynos5420/dp.c
View file

@ -241,10 +241,15 @@ static unsigned int exynos_dp_handle_edid(struct edp_device_info *edp_info)
return -1;
}
ret = exynos_dp_read_edid();
if (ret != EXYNOS_DP_SUCCESS) {
printk(BIOS_ERR, "DP exynos_dp_read_edid() failed\n");
return -1;
if (edp_info->raw_edid){
ret = EXYNOS_DP_SUCCESS;
printk(BIOS_SPEW, "EDID compiled in, skipping read\n");
} else {
ret = exynos_dp_read_edid();
if (ret != EXYNOS_DP_SUCCESS) {
printk(BIOS_ERR, "DP exynos_dp_read_edid() failed\n");
return -1;
}
}
return ret;