drm/amd/display: fix dp_hdmi_max_pixel_clk units

[Why]
We are incorrectly using dp_hdmi_max_pixel_clk because the units are not clear.

[How]
Rename to dp_hdmi_max_pixel_clk_in_khz, and change mode timing validation to use
the value correctly.
Signed-off-by: SivapiriyanKumarasamy <sivapiriyan.kumarasamy@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/core/dc_link.c

@@ -2150,7 +2150,7 @@ static bool dp_active_dongle_validate_timing(
 		return false;
 	}
 
-	if (get_timing_pixel_clock_100hz(timing) > (dongle_caps->dp_hdmi_max_pixel_clk * 10))
+	if (get_timing_pixel_clock_100hz(timing) > (dongle_caps->dp_hdmi_max_pixel_clk_in_khz * 10))
 		return false;
 
 	return true;

drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c

@@ -2304,8 +2304,8 @@ static void get_active_converter_info(
 					hdmi_caps = {.raw = det_caps[3] };
 				union dwnstream_port_caps_byte2
 					hdmi_color_caps = {.raw = det_caps[2] };
-				link->dpcd_caps.dongle_caps.dp_hdmi_max_pixel_clk =
-					det_caps[1] * 25000;
+				link->dpcd_caps.dongle_caps.dp_hdmi_max_pixel_clk_in_khz =
+					det_caps[1] * 2500;
 
 				link->dpcd_caps.dongle_caps.is_dp_hdmi_s3d_converter =
 					hdmi_caps.bits.FRAME_SEQ_TO_FRAME_PACK;
@@ -2322,7 +2322,7 @@ static void get_active_converter_info(
 					translate_dpcd_max_bpc(
 						hdmi_color_caps.bits.MAX_BITS_PER_COLOR_COMPONENT);
 
-				if (link->dpcd_caps.dongle_caps.dp_hdmi_max_pixel_clk != 0)
+				if (link->dpcd_caps.dongle_caps.dp_hdmi_max_pixel_clk_in_khz != 0)
 					link->dpcd_caps.dongle_caps.extendedCapValid = true;
 			}
 

drivers/gpu/drm/amd/display/dc/dc_types.h

@@ -395,7 +395,7 @@ struct dc_dongle_caps {
 	bool is_dp_hdmi_ycbcr422_converter;
 	bool is_dp_hdmi_ycbcr420_converter;
 	uint32_t dp_hdmi_max_bpc;
-	uint32_t dp_hdmi_max_pixel_clk;
+	uint32_t dp_hdmi_max_pixel_clk_in_khz;
 };
 /* Scaling format */
 enum scaling_transformation {