MLK-19227-4: HDMI: edid function is not supported by i.MX8QM A0 chip

EDID function is not supported by i.MX8QM A0 SOC chip.

Signed-off-by: Sandor Yu <Sandor.yu@nxp.com>
(cherry picked from commit 6aeff3508919d584c6ce5661b14fadf3187298e7)

diff --git a/drivers/gpu/drm/imx/hdp/imx-hdp.c b/drivers/gpu/drm/imx/hdp/imx-hdp.c
index c009ab3..ca35db4 100644 (file)
--- a/drivers/gpu/drm/imx/hdp/imx-hdp.c
+++ b/drivers/gpu/drm/imx/hdp/imx-hdp.c
@@ -26,6 +26,8 @@
 #include "imx-dp.h"
 #include "../imx-drm.h"
 
+#define B0_SILICON_ID                  0x11
+
 struct drm_display_mode *g_mode;
 
 static struct drm_display_mode edid_cea_modes[] = {
@@ -1245,6 +1247,10 @@ static int imx_hdp_imx_bind(struct device *dev, struct device *master,
 
        hdp->no_edid = of_property_read_bool(pdev->dev.of_node, "fsl,no_edid");
 
+       /* EDID function is not supported by iMX8QM A0 */
+       if (cpu_is_imx8qm() && (imx8_get_soc_revision() < B0_SILICON_ID))
+               hdp->no_edid = true;
+
        ret = of_property_read_u32(pdev->dev.of_node,
                                       "lane_mapping",
                                       &hdp->lane_mapping);