From: Chaitanya Kumar Borah <[email protected]> Add upper limit check for pixel clock for WCL.
For prior platforms though the bspec mentions the dotclock limits, however these are intentionally not enforced to avoid regressions, unless real issues are observed. BSpec: 49199, 68912 Signed-off-by: Chaitanya Kumar Borah <[email protected]> Signed-off-by: Ankit Nautiyal <[email protected]> Reviewed-by: Imre Deak <[email protected]> --- drivers/gpu/drm/i915/display/intel_display.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 9cfeb5530fd8..bd4219467e0e 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -8006,8 +8006,16 @@ int intel_max_uncompressed_dotclock(struct intel_display *display) int max_dotclock = display->cdclk.max_dotclk_freq; int limit = max_dotclock; - if (DISPLAY_VER(display) >= 30) + if (DISPLAY_VERx100(display) == 3002) + limit = 937500; + else if (DISPLAY_VER(display) >= 30) limit = 1350000; + /* + * Note: For other platforms though there are limits given + * in the Bspec, however the limit is intentionally not + * enforced to avoid regressions, unless real issues are + * observed. + */ return min(max_dotclock, limit); } -- 2.45.2
