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 B12B0C531D0 for ; Sat, 25 Jul 2026 12:31:49 +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:Content-Transfer-Encoding: MIME-Version:Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=l4oMlmSYbaL4+QvFHqLNc8Y4YfEgKcwKvJ080qJlPQU=; b=2atUefI7amKXB2FulcPnFeUeL6 AUPb8CeFyLNcBJ67GUTbJpL4hAi+5NMLroby8xP3ZH83QykbXCNAJcDGVUoip0fHXjy0KuipANHgb nyUOf2T4pmUnthXH27ka3YQVA5YIo3heQLEVJUWRrIQH3pnWKbH+gbm/CZ0XmYCuXOlg7DQ6v6WAJ Mz2TRBxJLO+74cqwz0WdfHFKCEBQLIhZlDZnf+X9bTILTtZfwT6V+jZuRqr0k9jRIVZ/mZV/GUEUR fDgb640kebOgAdYPmsBJnc2r7QG6m6iGlT0TR3S6RUYVNTNEoz7CWFcJSGxGUt5Ii0GGeSYxsvY9Y CALzcmEg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wnb4z-00000000JnI-1teR; Sat, 25 Jul 2026 12:02:09 +0000 Received: from vps.xff.cz ([195.181.215.36]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wnb4w-00000000Jmv-1u2w; Sat, 25 Jul 2026 12:02:07 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=xff.cz; s=mail; t=1784980923; bh=mC5Gbuu/d1cJUlqqjL5J8aXmwyGbebaXGr9ziWy7HGE=; h=From:To:Cc:Subject:Date:From; b=ylf0hQW9y26NvyAWZDQVOuOEwKAAHUwYFHS46KgwNaUmCsgacvjzw/BSyfxYrW/Qb XIpEUcJJnn8Oo9TPHE3e1KxF20ALjgMNyIBKKZFTuNoY/WzkuqgVnAk2QF8uPHm2yV XJ+v5aGGMY5FBEQSP+hKSH13dhlYtHGWamm1+KZE= From: =?UTF-8?q?Ond=C5=99ej=20Jirman?= To: linux-rockchip@lists.infradead.org Cc: linux-kernel@vger.kernel.org, Ondrej Jirman , Sandy Huang , =?UTF-8?q?Heiko=20St=C3=BCbner?= , Andy Yan , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , dri-devel@lists.freedesktop.org (open list:DRM DRIVERS FOR ROCKCHIP), linux-arm-kernel@lists.infradead.org (moderated list:ARM/Rockchip SoC support) Subject: [PATCH] drm/rockchip: dw-mipi-dsi-rockchip: Fix ISP1 PHY initialization Date: Sat, 25 Jul 2026 14:00:23 +0200 Message-ID: <20260725120200.2260152-1-megi@xff.cz> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260725_050206_795736_B0FFF6FD X-CRM114-Status: UNSURE ( 9.03 ) 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 From: Ondrej Jirman After suspend/resume cycle, ISP1 would stop receiving data. Re-initializing DPHY during PHY power on fixes the issue. Signed-off-by: Ondrej Jirman --- drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c index 3547d91b25d3..10d84bdda8cd 100644 --- a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c +++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c @@ -1255,6 +1255,14 @@ static int dw_mipi_dsi_dphy_power_on(struct phy *phy) goto err_phy_cfg_clk; } + if (dsi->cdata->dphy_rx_init) { + ret = dsi->cdata->dphy_rx_init(phy); + if (ret < 0) { + DRM_DEV_ERROR(dsi->dev, "hardware-specific phy init failed: %d\n", ret); + goto err_pwr_on; + } + } + /* do soc-variant specific init */ if (dsi->cdata->dphy_rx_power_on) { ret = dsi->cdata->dphy_rx_power_on(phy); -- 2.54.0