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 EA026CD5BA4 for ; Thu, 21 May 2026 08:09:36 +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:References:In-Reply-To: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:List-Owner; bh=nJs4taRf7N5/wuHuZ/5m8+pCqz6LN5YWjrrLCHGC1Q0=; b=JohkMHoH1nxnbXrwVYiUZ47G4l fFswXMv1tUkcv+Bx5T6rP/YLFUouXotDmSuvEOkFNBVzARhtYG9lPS8ZfHI/XaJrx9g+fsoWmefch SOuAxxqkZrOLt8p2VNYGLBF8A/0NRggRI0jIcqCd/NR/9t3bldkbjaKg7ia9IGM/yjHlbuygKxjey H+G2lz8YG7ikGk5ypuq8ShxsfGl3srS5wihydjZJdhOxst2nCy7pwoO8WBVUmOBNzDoq/Zfpg/ShO ijepEJ8cv3yTqHMoC43VN8WYFx+yZaGtsnvEdVbayZf/A3MHVYJHpXct1BJn1BICen4ckbIWYBs7r puGE8Ihg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wPyTC-000000073rZ-2ZjD; Thu, 21 May 2026 08:09:30 +0000 Received: from mail-m82185.xmail.ntesmail.com ([156.224.82.185]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wPySs-000000073Y0-39nG; Thu, 21 May 2026 08:09:12 +0000 Received: from zyb-HP-ProDesk-680-G2-MT.. (unknown [61.154.14.86]) by smtp.qiye.163.com (Hmail) with ESMTP id 3f48aae53; Thu, 21 May 2026 16:08:56 +0800 (GMT+08:00) From: Damon Ding To: hjc@rock-chips.com, heiko@sntech.de, andy.yan@rock-chips.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, simona@ffwll.ch, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, andrzej.hajda@intel.com, neil.armstrong@linaro.org, rfoss@kernel.org Cc: Laurent.pinchart@ideasonboard.com, jonas@kwiboo.se, jernej.skrabec@gmail.com, nicolas.frattaroli@collabora.com, cristian.ciocaltea@collabora.com, sebastian.reichel@collabora.com, dmitry.baryshkov@oss.qualcomm.com, luca.ceresoli@bootlin.com, dianders@chromium.org, m.szyprowski@samsung.com, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, Damon Ding Subject: [PATCH v6 01/10] dt-bindings: display: rockchip: analogix-dp: Fix hclk as third clock for RK3588 Date: Thu, 21 May 2026 16:08:26 +0800 Message-Id: <20260521080835.1362416-2-damon.ding@rock-chips.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260521080835.1362416-1-damon.ding@rock-chips.com> References: <20260521080835.1362416-1-damon.ding@rock-chips.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-HM-Tid: 0a9e49949c4b03a3kunm810e96ea5eb82 X-HM-MType: 1 X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFITzdXWRgWCB1ZQUpXWS1ZQUlXWQ8JGhUIEh9ZQVkZHx5MVkwaGB9PHkNOSExCQ1YVFA kWGhdVEwETFhoSFyQUDg9ZV1kYEgtZQVlNSlVKTk9VSk9VQ01ZV1kWGg8SFR0UWUFZT0tIVUpLSE pKQk1VSktLVUpCWQY+ DKIM-Signature: a=rsa-sha256; b=V8Lwnjn7cMrj1VyEvwMNYEZYAWFwjbiIUr37Y03qe2oqY2pKrePyCupVIXuvGVgeQjm6TP+V52YMU7Fvxntne2vvnr1dz0YNYCFCyAsu5z9rY+N2xby/A9FO5ROLc/CRyl+1P7weYfEFtMOpG7ee/b4GGIrPlL3yMgaHU0idvhw=; c=relaxed/relaxed; s=default; d=rock-chips.com; v=1; bh=nJs4taRf7N5/wuHuZ/5m8+pCqz6LN5YWjrrLCHGC1Q0=; h=date:mime-version:subject:message-id:from; X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260521_010911_095291_D3744A26 X-CRM114-Status: UNSURE ( 8.78 ) 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 RK3588 eDP controller requires HCLK_VO1 to access the VO1 GRF registers and enable the video datapath. Previously, the clock was enabled implicitly via the 'rockchip,vo-grf' phandle reference, which allowed the eDP to work without explicitly managing the hclk_vo1 clock. However, this is not safe or explicit. To make the clock dependency explicit, enforce per-SoC clock-names requirements: - RK3288: 2 clocks (dp, pclk) - RK3399: 3 clocks (dp, pclk, grf) - RK3588: 3 clocks (dp, pclk, hclk) Do not reuse the 'grf' clock name for RK3588 because it represents a different clock with distinct control logic: - The 'grf' clock is only for GRF register access and is toggled dynamically during register access. - The 'hclk' clock controls both GRF access and video datapath gating, and must remain enabled during probe. Fixes: f855146263b1 ("dt-bindings: display: rockchip: analogix-dp: Add support for RK3588") Signed-off-by: Damon Ding --- Changes in v4: - Modify the commit msg. Changes in v5: - Enforce the correct third clock name on a per-compatible basis. - Modify the commit msg simultaneously. Changes in v6: - Expand more detail commit msg about using hclk instead of grf clock. --- .../rockchip/rockchip,analogix-dp.yaml | 37 +++++++++++++++++-- 1 file changed, 33 insertions(+), 4 deletions(-) diff --git a/Documentation/devicetree/bindings/display/rockchip/rockchip,analogix-dp.yaml b/Documentation/devicetree/bindings/display/rockchip/rockchip,analogix-dp.yaml index d99b23b88cc5..8001c1facf98 100644 --- a/Documentation/devicetree/bindings/display/rockchip/rockchip,analogix-dp.yaml +++ b/Documentation/devicetree/bindings/display/rockchip/rockchip,analogix-dp.yaml @@ -23,10 +23,7 @@ properties: clock-names: minItems: 2 - items: - - const: dp - - const: pclk - - const: grf + maxItems: 3 power-domains: maxItems: 1 @@ -60,6 +57,33 @@ required: allOf: - $ref: /schemas/display/bridge/analogix,dp.yaml# + - if: + properties: + compatible: + contains: + enum: + - rockchip,rk3288-dp + then: + properties: + clock-names: + items: + - const: dp + - const: pclk + + - if: + properties: + compatible: + contains: + enum: + - rockchip,rk3399-edp + then: + properties: + clock-names: + items: + - const: dp + - const: pclk + - const: grf + - if: properties: compatible: @@ -68,6 +92,11 @@ allOf: - rockchip,rk3588-edp then: properties: + clock-names: + items: + - const: dp + - const: pclk + - const: hclk resets: minItems: 2 reset-names: -- 2.34.1