From mboxrd@z Thu Jan 1 00:00:00 1970 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id AF7F7CA1005 for ; Tue, 2 Sep 2025 21:45:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References :Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=1kK/CytReQ9/zSBNDOiLNOh+X3Gqdsz7/cGC3VpmV4Y=; b=4ML56yolLK8dpFuZMdikNgqVQm Pw0LbiDhU2/fseiFdxJWxaBOLx2zYV3VeWufggc/qsZED9vBBOKS+Yzc2Ce5haO2sHIpYxwtSHaO4 z+fRvpL2vnC6mxr7vA/+6/YGGi20Z7WbhNqgg2H+4GeThmDwxb9/KHmANTr9g2wsxQEzensI51fJI x2HT4EBXDCrtGd/yP400tZtbFdMnK03NrbERpCeEMTxVNZTjNCKYBwFl3o+B2wASTWixWsD9tnNGh bYv979yIWvrVK4r5Ld9I35/IrMNukgXUC4819dZMKDKT/N7SHo2uYq+RGDh2cU9XG0igQbeXprqoC KKFgvuSg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1utYoF-00000002DSV-3Bb4; Tue, 02 Sep 2025 21:44:59 +0000 Received: from bali.collaboradmins.com ([148.251.105.195]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1utUTY-000000017GM-2sT2; Tue, 02 Sep 2025 17:07:22 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1756832839; bh=QPBBXvF4CU0wV1LurPOFo7Rxahye8bU0R5m3P6yDM8c=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=nfaH1FYXk8NE2nhYBWpJ4GjKfiCFL1R2a1VfYh0O5CXkelLtWCQJZr+csyO+pyFgv GiVe7Bn6OXoWqGRzoZiY3ZLdueArI4zcdVRUHtNpGRv5SOgzNkchztqHWoev+P2wgF OLvpUjl4LcfBSI7MrmehNPWxUVnaRnv1Iqitd9z0iJ7AeWXJMamgR0XIByjY618Nwy j2fvbO/mpc5rM7ozFc9O67qHAIMEDNDwbr0Uv9Z22OqTKWmKQsvr9lSXXpQl+SO4SJ GIHB4RskvpkOe0z/L0SqN0sJMzjGLwFqNYRjCPHYTHa4CptHwfuIVipwoDIquEvHM0 4AdEe9XBVWU8w== Received: from localhost (unknown [82.79.138.60]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (prime256v1) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: cristicc) by bali.collaboradmins.com (Postfix) with UTF8SMTPSA id 2630F17E131D; Tue, 2 Sep 2025 19:07:19 +0200 (CEST) From: Cristian Ciocaltea Date: Tue, 02 Sep 2025 20:07:00 +0300 Subject: [PATCH 2/3] phy: rockchip: samsung-hdptx: Reduce ROPLL loop bandwidth MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250902-phy-hdptx-fixes-v1-2-e8d9ef9748d6@collabora.com> References: <20250902-phy-hdptx-fixes-v1-0-e8d9ef9748d6@collabora.com> In-Reply-To: <20250902-phy-hdptx-fixes-v1-0-e8d9ef9748d6@collabora.com> To: Vinod Koul , Kishon Vijay Abraham I , Heiko Stuebner , Dmitry Baryshkov , Algea Cao Cc: kernel@collabora.com, linux-phy@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org X-Mailer: b4 0.14.2 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250902_100720_875661_1BAECE77 X-CRM114-Status: UNSURE ( 9.48 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Due to its relatively low frequency, a noise stemming from the 24MHz PLL reference clock may traverse the low-pass loop filter of ROPLL, which could potentially generate some HDMI flash artifacts. Reduce ROPLL loop bandwidth in an attempt to mitigate the problem. Fixes: 553be2830c5f ("phy: rockchip: Add Samsung HDMI/eDP Combo PHY driver") Co-developed-by: Algea Cao Signed-off-by: Algea Cao Signed-off-by: Cristian Ciocaltea --- drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c b/drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c index aee03e8655f66d4b25de39bd2b2bf49d7a8b5b86..8ba9b53c2309b22a496574b7731377049f50068f 100644 --- a/drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c +++ b/drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c @@ -500,9 +500,7 @@ static const struct reg_sequence rk_hdtpx_common_cmn_init_seq[] = { REG_SEQ0(CMN_REG(0043), 0x00), REG_SEQ0(CMN_REG(0044), 0x46), REG_SEQ0(CMN_REG(0045), 0x24), - REG_SEQ0(CMN_REG(0046), 0xff), REG_SEQ0(CMN_REG(0047), 0x00), - REG_SEQ0(CMN_REG(0048), 0x44), REG_SEQ0(CMN_REG(0049), 0xfa), REG_SEQ0(CMN_REG(004a), 0x08), REG_SEQ0(CMN_REG(004b), 0x00), @@ -575,6 +573,8 @@ static const struct reg_sequence rk_hdtpx_tmds_cmn_init_seq[] = { REG_SEQ0(CMN_REG(0034), 0x00), REG_SEQ0(CMN_REG(003d), 0x40), REG_SEQ0(CMN_REG(0042), 0x78), + REG_SEQ0(CMN_REG(0046), 0xdd), + REG_SEQ0(CMN_REG(0048), 0x11), REG_SEQ0(CMN_REG(004e), 0x34), REG_SEQ0(CMN_REG(005c), 0x25), REG_SEQ0(CMN_REG(005e), 0x4f), -- 2.51.0