> Wiadomość napisana przez Andy Yan <andyshrk@xxxxxxx> w dniu 12 mar 2025, o godz. 11:42: > > From: Andy Yan <andy.yan@xxxxxxxxxxxxxx> > > The DW DP TX Controller is compliant with the DisplayPort Specification > Version 1.4 with the following features: > > * DisplayPort 1.4a > * Main Link: 1/2/4 lanes > * Main Link Support 1.62Gbps, 2.7Gbps, 5.4Gbps and 8.1Gbps > * AUX channel 1Mbps > * Single Stream Transport(SST) > * Multistream Transport (MST) > * Type-C support (alternate mode) > * HDCP 2.2, HDCP 1.3 > * Supports up to 8/10 bits per color component > * Supports RBG, YCbCr4:4:4, YCbCr4:2:2, YCbCr4:2:0 > * Pixel clock up to 594MHz > * I2S, SPDIF audio interface > > Add library with common helpers to make it can be shared with > other SoC. > > Signed-off-by: Andy Yan <andy.yan@xxxxxxxxxxxxxx> > > --- > > Changes in v2: > - Fix compile error when build as module > - Add phy init > - Only use one dw_dp_link_train_set > - inline dw_dp_phy_update_vs_emph > - Use dp_sdp > - Check return value of drm_modeset_lock > - Merge code in atomic_pre_enable/mode_fixup to atomic_check > - Return NULL if can't find a supported output format > - Fix max_link_rate from plat_data > Andy, Just small Q: do v2 needs something extra to get it working (particular kernel ver or extra dependency patches)? I just replaced v1 to v2 and dp stopped to work for me. e.g. on rock5a i’m getting: root@myth-frontend-fafc53b591a6:~ # dmesg | grep drm [ 9.245284] panthor fb000000.gpu: [drm] clock rate = 198000000 [ 9.249464] panthor fb000000.gpu: [drm] mali-g610 id 0xa867 major 0x0 minor 0x0 status 0x5 [ 9.249472] panthor fb000000.gpu: [drm] Features: L2:0x7120306 Tiler:0x809 Mem:0x301 MMU:0x2830 AS:0xff [ 9.249474] panthor fb000000.gpu: [drm] shader_present=0x50005 l2_present=0x1 tiler_present=0x1 [ 9.257979] panthor fb000000.gpu: [drm] Firmware protected mode entry not be supported, ignoring [ 9.258030] panthor fb000000.gpu: [drm] Firmware git sha: 814b47b551159067b67a37c4e9adda458ad9d852 [ 9.258604] panthor fb000000.gpu: [drm] CSF FW using interface v1.1.0, Features 0x0 Instrumentation features 0x71 [ 9.259671] [drm] Initialized panthor 1.3.0 for fb000000.gpu on minor 0 [ 9.324353] rockchip-drm display-subsystem: bound fdd90000.vop (ops vop2_component_ops) [ 9.324617] rockchip-drm display-subsystem: bound fde50000.dp (ops dw_dp_rockchip_component_ops) [ 9.325202] rockchip-drm display-subsystem: bound fde80000.hdmi (ops dw_hdmi_qp_rockchip_ops) [ 9.325506] [drm] Initialized rockchip 1.0.0 for display-subsystem on minor 1 [ 9.325531] rockchip-drm display-subsystem: [drm] Cannot find any crtc or sizes [ 9.325594] rockchip-drm display-subsystem: [drm] Cannot find any crtc or sizes dp status is "not connected" replacing only this patch back to v1 brings dp back to work.
