From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Hersen Wu , Feifei Xu , Evan Quan , Alex Deucher , Roman Li , Sasha Levin Subject: [PATCH 4.19 12/67] drm/amd/display: Fix 6x4K displays light-up on Vega20 (v2) Date: Thu, 20 Dec 2018 10:18:24 +0100 Message-Id: <20181220085904.051223633@linuxfoundation.org> In-Reply-To: <20181220085903.562090333@linuxfoundation.org> References: <20181220085903.562090333@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit List-ID: 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ [ Upstream commit c6888879fd55b1ba903c2a770127edbf6aef6f27 ] [Why] More than 4x4K didn't lightup on Vega20 due to low dcfclk value. Powerplay expects valid min requirement for dcfclk from DC. [How] Update min_dcfclock_khz based on min_engine_clock value. v2: backport to 4.20 (Alex) Reviewed-by: Hersen Wu Reviewed-by: Feifei Xu Reviewed-by: Evan Quan Acked-by: Alex Deucher Signed-off-by: Roman Li Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c index b2f308766a9e..0941f3c689bc 100644 --- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c @@ -2530,6 +2530,8 @@ static void pplib_apply_display_requirements( dc, context->bw.dce.sclk_khz); + pp_display_cfg->min_dcfclock_khz = pp_display_cfg->min_engine_clock_khz; + pp_display_cfg->min_engine_clock_deep_sleep_khz = context->bw.dce.sclk_deep_sleep_khz; -- 2.19.1