From: "Heiko Stübner" <heiko@sntech.de>
To: Sandy Huang <hjc@rock-chips.com>,
Andy Yan <andy.yan@rock-chips.com>,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Maxime Ripard <mripard@kernel.org>,
Thomas Zimmermann <tzimmermann@suse.de>,
Andrzej Hajda <andrzej.hajda@intel.com>,
Neil Armstrong <neil.armstrong@linaro.org>,
Robert Foss <rfoss@kernel.org>,
Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
Jonas Karlman <jonas@kwiboo.se>,
Jernej Skrabec <jernej.skrabec@gmail.com>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
David Airlie <airlied@gmail.com>, Simona Vetter <simona@ffwll.ch>,
Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>,
Luca Ceresoli <luca.ceresoli@bootlin.com>,
Philipp Zabel <p.zabel@pengutronix.de>,
Sebastian Reichel <sebastian.reichel@collabora.com>
Cc: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>,
Damon Ding <damon.ding@rock-chips.com>,
Dmitry Baryshkov <lumag@kernel.org>,
Alexey Charkov <alchark@flipper.net>,
dri-devel@lists.freedesktop.org,
linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org, kernel@collabora.com,
linux-arm-kernel@lists.infradead.org,
Sebastian Reichel <sebastian.reichel@collabora.com>,
Sashiko <sashiko-bot@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Subject: Re: [PATCH v11 00/21] Synopsys DisplayPort Controller improvements for Rockchip platforms
Date: Mon, 10 Aug 2026 13:48:58 +0200 [thread overview]
Message-ID: <20767137.geO5KgaWL5@diego> (raw)
In-Reply-To: <20260806-synopsys-dw-dp-improvements-v11-0-0d508505f383@collabora.com>
Hi Sebastian,
Am Donnerstag, 6. August 2026, 19:02:06 Mitteleuropäische Sommerzeit schrieb Sebastian Reichel:
> This patch series updates the Synopsys Designware DisplayPort bridge
> together with the only existing user: The Rockchip RK3576/RK3588:
>
> 1. Follow-up bridges (PHY, USB-C connector)
> This is needed to get USB-C DP AltMode working; I've followed
> the Qualcomm driver as reference
>
> 2. Runtime PM
> The initial driver has been upstreamed without RPM; add it to
> avoid wasting power when nothing is plugged
>
> 3. Audio
> The initial driver has been upstreamed without audio support;
> this adds all missing bits for audio with single stream transport
>
> To properly make use of the bridge code the following USBDP PHY series
> is also needed:
>
> https://lore.kernel.org/all/20260714-rockchip-usbdp-cleanup-v13-0-6cb3e769d4c5@collabora.com/
I've now had time to test both series (dw-dp + usbdp) :-)
- On my 1080p display I get nice output
- On my 4K display I get "some" output after increasing the ACLK_VOP to
750MHz - although the output itself is garbled. Before there was no
output at all
- hotplug works correctly, typec-display altmode gets correctly set up
and the drm driver enables output [0]
- cable being plugged in on boot does not work completely. The usb-side
gets detected correctly, but the drm-side stays at disconnected
The usb+typec-related kernel messages look the same though. [1]
Unplugging and replugging then produces display output.
Heiko
[0]
[ 221.536599] platform xhci-hcd.4.auto: bus: 'platform': __driver_probe_device: matched device with driver xhci-hcd
[ 221.548102] platform xhci-hcd.4.auto: bus: 'platform': really_probe: probing driver xhci-hcd with device
[ 221.558836] xhci-hcd xhci-hcd.4.auto: xHCI Host Controller
[ 221.564990] xhci-hcd xhci-hcd.4.auto: new USB bus registered, assigned bus number 5
[ 221.573652] xhci-hcd xhci-hcd.4.auto: hcc params 0x0220fe64 hci version 0x110 quirks 0x0000808002000010
[ 221.584184] xhci-hcd xhci-hcd.4.auto: irq 108, io mem 0xfc000000
[ 221.591002] xhci-hcd xhci-hcd.4.auto: xHCI Host Controller
[ 221.597149] xhci-hcd xhci-hcd.4.auto: new USB bus registered, assigned bus number 6
[ 221.605724] xhci-hcd xhci-hcd.4.auto: Host supports USB 3.0 SuperSpeed
[ 221.613368] usb usb5: bus: 'usb': __driver_probe_device: matched device with driver usb
[ 221.622335] usb usb5: bus: 'usb': really_probe: probing driver usb with device
[ 221.630503] usb 5-0:1.0: bus: 'usb': __driver_probe_device: matched device with driver hub
[ 221.639776] usb 5-0:1.0: bus: 'usb': really_probe: probing driver hub with device
[ 221.648171] hub 5-0:1.0: USB hub found
[ 221.652396] hub 5-0:1.0: 1 port detected
[ 221.656891] hub 5-0:1.0: driver: 'hub': driver_bound: bound to device
[ 221.664125] hub 5-0:1.0: bus: 'usb': really_probe: bound device to driver hub
[ 221.672155] usb usb5: driver: 'usb': driver_bound: bound to device
[ 221.679099] usb usb5: bus: 'usb': really_probe: bound device to driver usb
[ 221.686864] usb usb6: We don't know the algorithms for LPM for this host, disabling LPM.
[ 221.696175] usb usb6: bus: 'usb': __driver_probe_device: matched device with driver usb
[ 221.705143] usb usb6: bus: 'usb': really_probe: probing driver usb with device
[ 221.713323] usb 6-0:1.0: bus: 'usb': __driver_probe_device: matched device with driver hub
[ 221.722578] usb 6-0:1.0: bus: 'usb': really_probe: probing driver hub with device
[ 221.730961] hub 6-0:1.0: USB hub found
[ 221.735170] hub 6-0:1.0: 1 port detected
[ 221.739647] hub 6-0:1.0: driver: 'hub': driver_bound: bound to device
[ 221.746889] hub 6-0:1.0: bus: 'usb': really_probe: bound device to driver hub
[ 221.754920] usb usb6: driver: 'usb': driver_bound: bound to device
[ 221.761867] usb usb6: bus: 'usb': really_probe: bound device to driver usb
[ 221.769602] xhci-hcd xhci-hcd.4.auto: driver: 'xhci-hcd': driver_bound: bound to device
[ 221.778585] xhci-hcd xhci-hcd.4.auto: bus: 'platform': really_probe: bound device to driver xhci-hcd
[ 222.032051] typec port0-partner.0: bus: 'typec': __driver_probe_device: matched device with driver typec_displayport
[ 222.043845] typec port0-partner.0: bus: 'typec': really_probe: probing driver typec_displayport with device
[ 222.054819] typec_displayport port0-partner.0: driver: 'typec_displayport': driver_bound: bound to device
[ 222.065547] typec_displayport port0-partner.0: bus: 'typec': really_probe: bound device to driver typec_displayport
[ 222.336513] usb 5-1: new full-speed USB device number 2 using xhci-hcd
[ 222.493299] usb 5-1: not running at top speed; connect to a high speed hub
[ 222.512188] usb 5-1: bus: 'usb': __driver_probe_device: matched device with driver usb
[ 222.521057] usb 5-1: bus: 'usb': really_probe: probing driver usb with device
[ 222.535340] usb 5-1: driver: 'usb': driver_bound: bound to device
[ 222.542185] usb 5-1: bus: 'usb': really_probe: bound device to driver usb
[ 224.327221] Console: switching to colour frame buffer device 240x67
[ 224.353443] rockchip-drm display-subsystem: [drm] fb0: rockchipdrmfb frame buffer device
[1] -----------
[ 23.452524] platform xhci-hcd.4.auto: bus: 'platform': __driver_probe_device: matched device with driver xhci-hcd
[ 23.464004] platform xhci-hcd.4.auto: bus: 'platform': really_probe: probing driver xhci-hcd with device
[ 23.474654] xhci-hcd xhci-hcd.4.auto: xHCI Host Controller
[ 23.480783] xhci-hcd xhci-hcd.4.auto: new USB bus registered, assigned bus number 5
[ 23.489401] xhci-hcd xhci-hcd.4.auto: hcc params 0x0220fe64 hci version 0x110 quirks 0x0000808002000010
[ 23.499910] xhci-hcd xhci-hcd.4.auto: irq 108, io mem 0xfc000000
[ 23.506671] xhci-hcd xhci-hcd.4.auto: xHCI Host Controller
[ 23.512790] xhci-hcd xhci-hcd.4.auto: new USB bus registered, assigned bus number 6
[ 23.521346] xhci-hcd xhci-hcd.4.auto: Host supports USB 3.0 SuperSpeed
[ 23.528805] usb usb5: bus: 'usb': __driver_probe_device: matched device with driver usb
[ 23.537771] usb usb5: bus: 'usb': really_probe: probing driver usb with device
[ 23.545879] usb 5-0:1.0: bus: 'usb': __driver_probe_device: matched device with driver hub
[ 23.555120] usb 5-0:1.0: bus: 'usb': really_probe: probing driver hub with device
[ 23.563486] hub 5-0:1.0: USB hub found
[ 23.567675] hub 5-0:1.0: 1 port detected
[ 23.572138] hub 5-0:1.0: driver: 'hub': driver_bound: bound to device
[ 23.579343] hub 5-0:1.0: bus: 'usb': really_probe: bound device to driver hub
[ 23.587327] usb usb5: driver: 'usb': driver_bound: bound to device
[ 23.594240] usb usb5: bus: 'usb': really_probe: bound device to driver usb
[ 23.601942] usb usb6: We don't know the algorithms for LPM for this host, disabling LPM.
[ 23.618552] usb usb6: bus: 'usb': __driver_probe_device: matched device with driver usb
[ 23.627501] usb usb6: bus: 'usb': really_probe: probing driver usb with device
[ 23.635604] usb 6-0:1.0: bus: 'usb': __driver_probe_device: matched device with driver hub
[ 23.644841] usb 6-0:1.0: bus: 'usb': really_probe: probing driver hub with device
[ 23.653203] hub 6-0:1.0: USB hub found
[ 23.657389] hub 6-0:1.0: 1 port detected
[ 23.661798] hub 6-0:1.0: driver: 'hub': driver_bound: bound to device
[ 23.668998] hub 6-0:1.0: bus: 'usb': really_probe: bound device to driver hub
[ 23.676979] usb usb6: driver: 'usb': driver_bound: bound to device
[ 23.683886] usb usb6: bus: 'usb': really_probe: bound device to driver usb
[ 23.691574] xhci-hcd xhci-hcd.4.auto: driver: 'xhci-hcd': driver_bound: bound to device
[ 23.700524] xhci-hcd xhci-hcd.4.auto: bus: 'platform': really_probe: bound device to driver xhci-hcd
[ 23.951857] typec port0-partner.0: bus: 'typec': __driver_probe_device: matched device with driver typec_displayport
[ 23.963628] typec port0-partner.0: bus: 'typec': really_probe: probing driver typec_displayport with device
[ 23.974547] typec_displayport port0-partner.0: driver: 'typec_displayport': driver_bound: bound to device
[ 23.985243] typec_displayport port0-partner.0: bus: 'typec': really_probe: bound device to driver typec_displayport
[ 24.252358] usb 5-1: new full-speed USB device number 2 using xhci-hcd
[ 24.408085] usb 5-1: not running at top speed; connect to a high speed hub
[ 24.427935] usb 5-1: bus: 'usb': __driver_probe_device: matched device with driver usb
[ 24.441732] usb 5-1: bus: 'usb': really_probe: probing driver usb with device
[ 24.462931] usb 5-1: driver: 'usb': driver_bound: bound to device
[ 24.475569] usb 5-1: bus: 'usb': really_probe: bound device to driver usb
next prev parent reply other threads:[~2026-08-10 11:49 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-06 17:02 [PATCH v11 00/21] Synopsys DisplayPort Controller improvements for Rockchip platforms Sebastian Reichel
2026-08-06 17:02 ` [PATCH v11 01/21] drm/bridge: synopsys: dw-dp: Register DP AUX on bridge attach Sebastian Reichel
2026-08-06 17:02 ` [PATCH v11 02/21] drm/bridge: synopsys: dw-dp: Fix incorrect resource lifetimes in bind callback Sebastian Reichel
2026-08-06 17:02 ` [PATCH v11 03/21] drm/bridge: synopsys: dw-dp: Fix error handling for DP link enablement Sebastian Reichel
2026-08-06 17:02 ` [PATCH v11 04/21] drm/bridge: synopsys: dw-dp: Document missing reset line deassert Sebastian Reichel
2026-08-06 17:02 ` [PATCH v11 05/21] drm/bridge: synopsys: dw-dp: Add missing mutex cleanups on module removal Sebastian Reichel
2026-08-06 17:02 ` [PATCH v11 06/21] drm/bridge: synopsys: dw-dp: Fix AUX transfer timeout race condition Sebastian Reichel
2026-08-06 17:02 ` [PATCH v11 07/21] drm/bridge: synopsys: dw-dp: Fix support for short I2C reads Sebastian Reichel
2026-08-06 17:02 ` [PATCH v11 08/21] drm/bridge: synopsys: dw-dp: Free output_fmts when none are valid Sebastian Reichel
2026-08-06 17:02 ` [PATCH v11 09/21] drm/bridge: synopsys: dw-dp: Support MEDIA_BUS_FMT_FIXED Sebastian Reichel
2026-08-06 17:02 ` [PATCH v11 10/21] drm/bridge: synopsys: dw-dp: Add follow-up bridge support Sebastian Reichel
2026-08-07 2:50 ` Chaoyi Chen
2026-08-06 17:02 ` [PATCH v11 11/21] drm/bridge: Add out-of-band HPD notify handler Sebastian Reichel
2026-08-06 17:02 ` [PATCH v11 12/21] drm/bridge: synopsys: dw-dp: Support software triggered OOB HPD Sebastian Reichel
2026-08-06 17:02 ` [PATCH v11 13/21] drm/rockchip: dw_dp: Implement out-of-band HPD handling Sebastian Reichel
2026-08-06 17:02 ` [PATCH v11 14/21] drm/bridge: synopsys: dw-dp: Add Runtime PM support Sebastian Reichel
2026-08-06 17:02 ` [PATCH v11 15/21] drm/rockchip: dw_dp: Add runtime " Sebastian Reichel
2026-08-06 17:02 ` [PATCH v11 16/21] drm/bridge: synopsys: dw-dp: Protect sdp_reg_bank from concurrent access Sebastian Reichel
2026-08-06 17:02 ` [PATCH v11 17/21] drm/bridge: synopsys: dw-dp: Drop useless reservation of first slot Sebastian Reichel
2026-08-06 17:02 ` [PATCH v11 18/21] drm/bridge: synopsys: dw-dp: Clear only enabled SDPs on atomic disable Sebastian Reichel
2026-08-06 17:02 ` [PATCH v11 19/21] drm/bridge: synopsys: dw-dp: Use regmap_set_bits in dw_dp_send_sdp Sebastian Reichel
2026-08-06 17:02 ` [PATCH v11 20/21] dt-bindings: display: rockchip: dw-dp: Fix sound DAI cells Sebastian Reichel
2026-08-06 17:02 ` [PATCH v11 21/21] drm/bridge: synopsys: dw-dp: Add audio support Sebastian Reichel
2026-08-08 9:41 ` [PATCH v11 00/21] Synopsys DisplayPort Controller improvements for Rockchip platforms Igor Paunovic
2026-08-08 20:19 ` Sebastian Reichel
2026-08-10 11:48 ` Heiko Stübner [this message]
2026-08-10 12:08 ` Alexey Charkov
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