From patchwork Fri Nov 15 16:20:40 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Detlev Casanova X-Patchwork-Id: 13876552 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 475D0D68BCB for ; Fri, 15 Nov 2024 16:23:35 +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=J3H19SwGz0tF2ig/WL6iKz21BuxzXF4FXVgCJnCmAus=; b=uPIiGCHksbEFjQN7St/WViVolH UosUeeiCb7EdMFDlFNVOKfEdpjRWmjKXpyKuZ0o+fECWwBPuplFUz2pGFLt43ergOmfRX8Wdchzgm /iKdpXJT0kOXLF4G7A14oddDXQgtED6Uh9ge1Dp6OIRxjZNhQQsxGbM3SYNejMiFd8tpqLT/l2msZ 0H1guXZxeR0+nL7wqQmDWJEqPdpjfTHwM818zb2EN7Rqx5HkxzKjdwwUcnubtBE2xbyxYG6q6xCh9 nvjQEN2EsmsLR2bYf0ZP6W8Qz/RH7v6/79abIULNUWPSMQuYttxV/epfDkhRpwv1ati7GpVvEGb5I qSIyN/Zg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tBz6Q-00000003KW6-2Q1t; Fri, 15 Nov 2024 16:23:22 +0000 Received: from bali.collaboradmins.com ([148.251.105.195]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tBz4d-00000003K0P-1OV5; Fri, 15 Nov 2024 16:21:33 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1731687689; bh=t8QOMvicQTdBi3HEc3pXhANKEj297lR7+tmr8+awtJk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Ggbk3HKo6LYr9TppFbMl87GhuGstk7MN+7cbv64SY8d0AgULJiOtVrATmrzgtnB2k 790RKIi56ZKOuLQCneAhgucS8gP31bVFm73yMVUDvxzhA64B2XxvzsnpPQUQ1zfyjM rgN0gIRMgi8E4MGuANUsLsCxOtrQSbhNFc62jhmKtbnTsxyMHNAAhwLzzioCJpbBpn NixWT2W91JFLDY3XJ1llXNK3qGJlmgBgNmGpeLKjxjEZAWTwEpvAvKs1e3TbZ9MPp+ ZJlvtJDBD5IB9rFb2GYrIAR/+whOIbcaUvfQShn4NV2Y1ZIdC6Mpn6S/0xrez6ZaZb PCjFXJ3IOepKQ== Received: from bootstrap.mtl.collabora.ca (mtl.collabora.ca [66.171.169.34]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: detlev) by bali.collaboradmins.com (Postfix) with ESMTPSA id AB5E817E374C; Fri, 15 Nov 2024 17:21:26 +0100 (CET) From: Detlev Casanova To: linux-kernel@vger.kernel.org Cc: Sandy Huang , =?utf-8?q?Heiko_St=C3=BCbner?= , Andy Yan , David Airlie , Simona Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Heiko Stuebner , Sebastian Reichel , Dragan Simic , Alexey Charkov , Jianfeng Liu , Cristian Ciocaltea , dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, kernel@collabora.com, Detlev Casanova , Conor Dooley Subject: [PATCH v4 1/3] dt-bindings: display: vop2: Add VP clock resets Date: Fri, 15 Nov 2024 11:20:40 -0500 Message-ID: <20241115162120.83990-2-detlev.casanova@collabora.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241115162120.83990-1-detlev.casanova@collabora.com> References: <20241115162120.83990-1-detlev.casanova@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241115_082131_534629_A28B2787 X-CRM114-Status: UNSURE ( 8.49 ) 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 Add the documentation for VOP2 video ports reset clocks. One reset can be set per video port. Reviewed-by: Conor Dooley Signed-off-by: Detlev Casanova --- .../display/rockchip/rockchip-vop2.yaml | 40 +++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/Documentation/devicetree/bindings/display/rockchip/rockchip-vop2.yaml b/Documentation/devicetree/bindings/display/rockchip/rockchip-vop2.yaml index 2531726af306b..5b59d91de47bd 100644 --- a/Documentation/devicetree/bindings/display/rockchip/rockchip-vop2.yaml +++ b/Documentation/devicetree/bindings/display/rockchip/rockchip-vop2.yaml @@ -65,6 +65,26 @@ properties: - const: dclk_vp3 - const: pclk_vop + resets: + minItems: 5 + items: + - description: AXI clock reset. + - description: AHB clock reset. + - description: Pixel clock reset for video port 0. + - description: Pixel clock reset for video port 1. + - description: Pixel clock reset for video port 2. + - description: Pixel clock reset for video port 3. + + reset-names: + minItems: 5 + items: + - const: aclk + - const: hclk + - const: dclk_vp0 + - const: dclk_vp1 + - const: dclk_vp2 + - const: dclk_vp3 + rockchip,grf: $ref: /schemas/types.yaml#/definitions/phandle description: @@ -128,6 +148,11 @@ allOf: clock-names: minItems: 7 + resets: + minItems: 6 + reset-names: + minItems: 6 + ports: required: - port@0 @@ -152,6 +177,11 @@ allOf: clock-names: maxItems: 5 + resets: + maxItems: 5 + reset-names: + maxItems: 5 + ports: required: - port@0 @@ -183,6 +213,16 @@ examples: "dclk_vp0", "dclk_vp1", "dclk_vp2"; + resets = <&cru SRST_A_VOP>, + <&cru SRST_H_VOP>, + <&cru SRST_VOP0>, + <&cru SRST_VOP1>, + <&cru SRST_VOP2>; + reset-names = "aclk", + "hclk", + "dclk_vp0", + "dclk_vp1", + "dclk_vp2"; power-domains = <&power RK3568_PD_VO>; iommus = <&vop_mmu>; vop_out: ports { From patchwork Fri Nov 15 16:20:41 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Detlev Casanova X-Patchwork-Id: 13876558 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 1E8FBD68BCB for ; Fri, 15 Nov 2024 16:24:32 +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; 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Fri, 15 Nov 2024 17:21:29 +0100 (CET) From: Detlev Casanova To: linux-kernel@vger.kernel.org Cc: Sandy Huang , =?utf-8?q?Heiko_St=C3=BCbner?= , Andy Yan , David Airlie , Simona Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Heiko Stuebner , Sebastian Reichel , Dragan Simic , Alexey Charkov , Jianfeng Liu , Cristian Ciocaltea , dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, kernel@collabora.com, Detlev Casanova Subject: [PATCH v4 2/3] drm/rockchip: vop2: Add clock resets support Date: Fri, 15 Nov 2024 11:20:41 -0500 Message-ID: <20241115162120.83990-3-detlev.casanova@collabora.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241115162120.83990-1-detlev.casanova@collabora.com> References: <20241115162120.83990-1-detlev.casanova@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241115_082133_769175_247147CE X-CRM114-Status: GOOD ( 17.26 ) 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 At the end of initialization, each VP clock needs to be reset before they can be used. Failing to do so can put the VOP in an undefined state where the generated HDMI signal is either lost or not matching the selected mode. This issue can be reproduced by switching modes multiple times. Depending on the setup, after about 10 mode switches, the signal will be lost and the value in register 0x890 (VSYNCWIDTH + VFRONT) will take the value `0x0000018c`. That makes VSYNCWIDTH=0, which is wrong. Adding the clock resets after the VOP configuration fixes the issue. Signed-off-by: Detlev Casanova --- drivers/gpu/drm/rockchip/rockchip_drm_vop2.c | 30 ++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c index 9ad025aa9ab05..42e165e42c833 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include @@ -157,6 +158,7 @@ struct vop2_win { struct vop2_video_port { struct drm_crtc crtc; struct vop2 *vop2; + struct reset_control *dclk_rst; struct clk *dclk; unsigned int id; const struct vop2_video_port_data *data; @@ -2060,6 +2062,26 @@ static int us_to_vertical_line(struct drm_display_mode *mode, int us) return us * mode->clock / mode->htotal / 1000; } +static int vop2_clk_reset(struct vop2_video_port *vp) +{ + struct reset_control *rstc = vp->dclk_rst; + struct vop2 *vop2 = vp->vop2; + int ret; + + if (!rstc) + return 0; + + ret = reset_control_assert(rstc); + if (ret < 0) + drm_warn(vop2->drm, "failed to assert reset\n"); + udelay(10); + ret = reset_control_deassert(rstc); + if (ret < 0) + drm_warn(vop2->drm, "failed to deassert reset\n"); + + return ret; +} + static void vop2_crtc_atomic_enable(struct drm_crtc *crtc, struct drm_atomic_state *state) { @@ -2202,6 +2224,8 @@ static void vop2_crtc_atomic_enable(struct drm_crtc *crtc, vop2_crtc_atomic_try_set_gamma(vop2, vp, crtc, crtc_state); + vop2_clk_reset(vp); + drm_crtc_vblank_on(crtc); vop2_unlock(vop2); @@ -2891,6 +2915,12 @@ static int vop2_create_crtcs(struct vop2 *vop2) vp->data = vp_data; snprintf(dclk_name, sizeof(dclk_name), "dclk_vp%d", vp->id); + vp->dclk_rst = devm_reset_control_get_optional(vop2->dev, dclk_name); + if (IS_ERR(vp->dclk_rst)) { + drm_err(vop2->drm, "failed to get %s reset\n", dclk_name); + return PTR_ERR(vp->dclk_rst); + } + vp->dclk = devm_clk_get(vop2->dev, dclk_name); if (IS_ERR(vp->dclk)) { drm_err(vop2->drm, "failed to get %s\n", dclk_name); From patchwork Fri Nov 15 16:20:42 2024 Content-Type: text/plain; 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Fri, 15 Nov 2024 17:21:32 +0100 (CET) From: Detlev Casanova To: linux-kernel@vger.kernel.org Cc: Sandy Huang , =?utf-8?q?Heiko_St=C3=BCbner?= , Andy Yan , David Airlie , Simona Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Heiko Stuebner , Sebastian Reichel , Dragan Simic , Alexey Charkov , Jianfeng Liu , Cristian Ciocaltea , dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, kernel@collabora.com, Detlev Casanova Subject: [PATCH v4 3/3] arm64: dts: rockchip: Add VOP clock resets for rk3588s Date: Fri, 15 Nov 2024 11:20:42 -0500 Message-ID: <20241115162120.83990-4-detlev.casanova@collabora.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241115162120.83990-1-detlev.casanova@collabora.com> References: <20241115162120.83990-1-detlev.casanova@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241115_082136_541111_68DE778F X-CRM114-Status: UNSURE ( 8.88 ) 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 This adds the needed clock resets for all rk3588(s) based SOCs. Signed-off-by: Detlev Casanova --- arch/arm64/boot/dts/rockchip/rk3588-base.dtsi | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi b/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi index d97d84b888375..b5c19423de9b6 100644 --- a/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi @@ -1268,6 +1268,18 @@ vop: vop@fdd90000 { "pclk_vop"; iommus = <&vop_mmu>; power-domains = <&power RK3588_PD_VOP>; + resets = <&cru SRST_A_VOP>, + <&cru SRST_H_VOP>, + <&cru SRST_D_VOP0>, + <&cru SRST_D_VOP1>, + <&cru SRST_D_VOP2>, + <&cru SRST_D_VOP3>; + reset-names = "aclk", + "hclk", + "dclk_vp0", + "dclk_vp1", + "dclk_vp2", + "dclk_vp3"; rockchip,grf = <&sys_grf>; rockchip,vop-grf = <&vop_grf>; rockchip,vo1-grf = <&vo1_grf>;