From patchwork Fri Mar 11 08:33:13 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sascha Hauer X-Patchwork-Id: 550633 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 55B5BC433FE for ; Fri, 11 Mar 2022 08:33:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235451AbiCKIe6 (ORCPT ); Fri, 11 Mar 2022 03:34:58 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54752 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235321AbiCKIe6 (ORCPT ); Fri, 11 Mar 2022 03:34:58 -0500 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D0B291B6086 for ; Fri, 11 Mar 2022 00:33:55 -0800 (PST) Received: from dude02.hi.pengutronix.de ([2001:67c:670:100:1d::28]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nSaiL-0000aS-Cg; Fri, 11 Mar 2022 09:33:33 +0100 Received: from sha by dude02.hi.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1nSaiE-0040hF-KQ; Fri, 11 Mar 2022 09:33:26 +0100 From: Sascha Hauer To: dri-devel@lists.freedesktop.org Cc: linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, devicetree@vger.kernel.org, kernel@pengutronix.de, Andy Yan , Benjamin Gaignard , Michael Riesch , Sandy Huang , =?utf-8?q?Heiko_St=C3=BCbner?= , Peter Geis , Douglas Anderson , Yakir Yang , Sascha Hauer Subject: [PATCH v8 14/24] drm/rockchip: dw_hdmi: Set cur_ctr to 0 always Date: Fri, 11 Mar 2022 09:33:13 +0100 Message-Id: <20220311083323.887372-15-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220311083323.887372-1-s.hauer@pengutronix.de> References: <20220311083323.887372-1-s.hauer@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::28 X-SA-Exim-Mail-From: sha@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: devicetree@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Douglas Anderson Jitter was improved by lowering the MPLL bandwidth to account for high frequency noise in the rk3288 PLL. In each case MPLL bandwidth was lowered only enough to get us a comfortable margin. We believe that lowering the bandwidth like this is safe given sufficient testing. Signed-off-by: Douglas Anderson Signed-off-by: Yakir Yang Signed-off-by: Sascha Hauer --- Notes: Changes since v3: - new patch drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 16 ++-------------- 1 file changed, 2 insertions(+), 14 deletions(-) diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c index 4f912cbea73bb..f56c79c60d149 100644 --- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c +++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c @@ -181,20 +181,8 @@ static const struct dw_hdmi_mpll_config rockchip_mpll_cfg[] = { static const struct dw_hdmi_curr_ctrl rockchip_cur_ctr[] = { /* pixelclk bpp8 bpp10 bpp12 */ { - 40000000, { 0x0018, 0x0018, 0x0018 }, - }, { - 65000000, { 0x0028, 0x0028, 0x0028 }, - }, { - 66000000, { 0x0038, 0x0038, 0x0038 }, - }, { - 74250000, { 0x0028, 0x0038, 0x0038 }, - }, { - 83500000, { 0x0028, 0x0038, 0x0038 }, - }, { - 146250000, { 0x0038, 0x0038, 0x0038 }, - }, { - 148500000, { 0x0000, 0x0038, 0x0038 }, - }, { + 600000000, { 0x0000, 0x0000, 0x0000 }, + }, { ~0UL, { 0x0000, 0x0000, 0x0000}, } };