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Message-Id: <20250625-drm-update-edid-v1-3-2d963743ab9e@kernel.org>
Date: Wed, 25 Jun 2025 17:14:37 +0200
From: Maxime Ripard <mripard@...nel.org>
To: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>,
Simona Vetter <simona@...ll.ch>
Cc: Dmitry Baryshkov <lumag@...nel.org>, dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org, Maxime Ripard <mripard@...nel.org>
Subject: [PATCH 3/3] drm/tests: edid: Add edid-decode --check output
Some of our EDIDs are (rightfully) invalid, but most of them should be
valid.
Let's add the edid-decode --check of these EDIDs when they were
generated, so we know what to expect going forward, and a comment to
explicitly mention when we expect them to be broken.
Signed-off-by: Maxime Ripard <mripard@...nel.org>
---
drivers/gpu/drm/tests/drm_kunit_edid.h | 51 ++++++++++++++++++++++++++++++++++
1 file changed, 51 insertions(+)
diff --git a/drivers/gpu/drm/tests/drm_kunit_edid.h b/drivers/gpu/drm/tests/drm_kunit_edid.h
index 14782a3840f00c50c7daee38bba98585003c13a2..34395bbb912f0919e17a7093624170dd278a87f4 100644
--- a/drivers/gpu/drm/tests/drm_kunit_edid.h
+++ b/drivers/gpu/drm/tests/drm_kunit_edid.h
@@ -44,10 +44,17 @@
* Display Product Name: 'Test EDID'
* Display Range Limits:
* Monitor ranges (GTF): 50-70 Hz V, 30-70 kHz H, max dotclock 150 MHz
* Dummy Descriptor:
* Checksum: 0xab
+ *
+ * ----------------
+ *
+ * edid-decode 1.30.0-5367
+ * edid-decode SHA: 41ebf7135691 2025-05-01 10:19:22
+ *
+ * EDID conformity: PASS
*/
static const unsigned char test_edid_dvi_1080p[] = {
0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x31, 0xd8, 0x2a, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x21, 0x01, 0x03, 0x81, 0xa0, 0x5a, 0x78,
0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
@@ -60,10 +67,14 @@ static const unsigned char test_edid_dvi_1080p[] = {
0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xab
};
/*
+ *
+ * This edid is intentionally broken with the 100MHz limit. It's meant
+ * to be used only with tests in unusual situations.
+ *
* edid-decode (hex):
*
* 00 ff ff ff ff ff ff 00 31 d8 2a 00 00 00 00 00
* 00 21 01 03 81 a0 5a 78 02 00 00 00 00 00 00 00
* 00 00 00 20 00 00 01 01 01 01 01 01 01 01 01 01
@@ -134,10 +145,22 @@ static const unsigned char test_edid_dvi_1080p[] = {
* CE scan behavior: Always Underscanned
* Vendor-Specific Data Block (HDMI), OUI 00-0C-03:
* Source physical address: 1.2.3.4
* Maximum TMDS clock: 100 MHz
* Checksum: 0x10 Unused space in Extension Block: 106 bytes
+ *
+ * ----------------
+ *
+ * edid-decode 1.30.0-5367
+ * edid-decode SHA: 41ebf7135691 2025-05-01 10:19:22
+ *
+ * Failures:
+ *
+ * EDID:
+ * CTA-861: The maximum HDMI TMDS clock is 100000 kHz, but one or more video timings go up to 148500 kHz.
+ *
+ * EDID conformity: FAIL
*/
static const unsigned char test_edid_hdmi_1080p_rgb_max_100mhz[] = {
0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x31, 0xd8, 0x2a, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x21, 0x01, 0x03, 0x81, 0xa0, 0x5a, 0x78,
0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20,
@@ -235,10 +258,17 @@ static const unsigned char test_edid_hdmi_1080p_rgb_max_100mhz[] = {
* CE scan behavior: Always Underscanned
* Vendor-Specific Data Block (HDMI), OUI 00-0C-03:
* Source physical address: 1.2.3.4
* Maximum TMDS clock: 200 MHz
* Checksum: 0xfc Unused space in Extension Block: 106 bytes
+ *
+ * ----------------
+ *
+ * edid-decode 1.30.0-5367
+ * edid-decode SHA: 41ebf7135691 2025-05-01 10:19:22
+ *
+ * EDID conformity: PASS
*/
static const unsigned char test_edid_hdmi_1080p_rgb_max_200mhz[] = {
0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x31, 0xd8, 0x2a, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x21, 0x01, 0x03, 0x81, 0xa0, 0x5a, 0x78,
0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20,
@@ -336,10 +366,17 @@ static const unsigned char test_edid_hdmi_1080p_rgb_max_200mhz[] = {
* CE scan behavior: Always Underscanned
* Vendor-Specific Data Block (HDMI), OUI 00-0C-03:
* Source physical address: 1.2.3.4
* Maximum TMDS clock: 340 MHz
* Checksum: 0xe0 Unused space in Extension Block: 106 bytes
+ *
+ * ----------------
+ *
+ * edid-decode 1.30.0-5367
+ * edid-decode SHA: 41ebf7135691 2025-05-01 10:19:22
+ *
+ * EDID conformity: PASS
*/
static const unsigned char test_edid_hdmi_1080p_rgb_max_340mhz[] = {
0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x31, 0xd8, 0x2a, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x21, 0x01, 0x03, 0x81, 0xa0, 0x5a, 0x78,
0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20,
@@ -443,10 +480,17 @@ static const unsigned char test_edid_hdmi_1080p_rgb_max_340mhz[] = {
* DC_36bit
* DC_30bit
* DC_Y444
* Maximum TMDS clock: 200 MHz
* Checksum: 0xd4 Unused space in Extension Block: 106 bytes
+ *
+ * ----------------
+ *
+ * edid-decode 1.30.0-5367
+ * edid-decode SHA: 41ebf7135691 2025-05-01 10:19:22
+ *
+ * EDID conformity: PASS
*/
static const unsigned char test_edid_hdmi_1080p_rgb_yuv_dc_max_200mhz[] = {
0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x31, 0xd8, 0x2a, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x21, 0x01, 0x03, 0x81, 0xa0, 0x5a, 0x78,
0x1a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20,
@@ -550,10 +594,17 @@ static const unsigned char test_edid_hdmi_1080p_rgb_yuv_dc_max_200mhz[] = {
* DC_36bit
* DC_30bit
* DC_Y444
* Maximum TMDS clock: 340 MHz
* Checksum: 0xb8 Unused space in Extension Block: 106 bytes
+ *
+ * ----------------
+ *
+ * edid-decode 1.30.0-5367
+ * edid-decode SHA: 41ebf7135691 2025-05-01 10:19:22
+ *
+ * EDID conformity: PASS
*/
static const unsigned char test_edid_hdmi_1080p_rgb_yuv_dc_max_340mhz[] = {
0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x31, 0xd8, 0x2a, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x21, 0x01, 0x03, 0x81, 0xa0, 0x5a, 0x78,
0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20,
--
2.49.0
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