Hi Piotr,
在 2025-03-06 19:47:31，"Piotr Oniszczuk" <piotr.oniszc...@gmail.com> 写道：
>
>> Wiadomość napisana przez Andy Yan <andys...@163.com> w dniu 6 mar 2025, o
>> godz. 09:53:
>>
>>
>> Hi,
>>
>> 在 2025-03-06 16:42:00，"Piotr Oniszczuk" <piotr.oniszc...@gmail.com> 写道：
>>>
>>>
>>>> Wiadomość napisana przez Andy Yan <andys...@163.com> w dniu 6 mar 2025, o
>>>> godz. 01:59:
>>>>
>>>>
>>>>
>>>>
>>>> Both of the two config options should be enabled.
>>>> andy@Pro480:~/WorkSpace/linux-next$ rg DW_DP .config
>>>> 4044:CONFIG_ROCKCHIP_DW_DP=y
>>>
>>> here i’m a bit lost….
>>> greping on full kernel sources (with applied
>>> https://patchwork.kernel.org/project/linux-rockchip/list/?series=936784)
>>> gives me no single appearance of ROCKCHIP_DW_DP…
>>> Do i miss something?
>>
>> see PATCH 3/6:
>>
>>
>> diff --git a/drivers/gpu/drm/rockchip/Kconfig
>> b/drivers/gpu/drm/rockchip/Kconfig
>> index 26c4410b2407..c8638baf9641 100644
>> --- a/drivers/gpu/drm/rockchip/Kconfig
>> +++ b/drivers/gpu/drm/rockchip/Kconfig
>> @@ -8,6 +8,7 @@ config DRM_ROCKCHIP
>> select DRM_PANEL
>> select VIDEOMODE_HELPERS
>> select DRM_ANALOGIX_DP if ROCKCHIP_ANALOGIX_DP
>> + select DRM_DW_DP if ROCKCHIP_DW_DP
>> select DRM_DW_HDMI if ROCKCHIP_DW_HDMI
>> select DRM_DW_HDMI_QP if ROCKCHIP_DW_HDMI_QP
>> select DRM_DW_MIPI_DSI if ROCKCHIP_DW_MIPI_DSI
>> @@ -58,6 +59,12 @@ config ROCKCHIP_CDN_DP
>> RK3399 based SoC, you should select this
>> option.
>>
>> +config ROCKCHIP_DW_DP
>> + bool "Rockchip specific extensions for Synopsys DW DP"
>> + help
>> + Choose this option for Synopsys DesignWare Cores DisplayPort
>> + transmit controller support on Rockchip SoC.
>>
>> https://lore.kernel.org/linux-rockchip/047eecfc-7e55-44ec-896f-13fe04333...@gmail.com/T/#m178a325ea0ebc64187aae474d77c3f7a9e0bc93d
>>>
>
>
>Ah my bad!
>One patch patch was commented - so not all dp code was applied.
>
>Now it is much better:
>
>root@myth-frontend-56b0f018b5e0:~ # dmesg | grep drm
>[ 9.795380] panthor fb000000.gpu: [drm] clock rate = 198000000
>[ 9.796257] panthor fb000000.gpu: [drm] mali-g610 id 0xa867 major 0x0 minor
>0x0 status 0x5
>[ 9.796262] panthor fb000000.gpu: [drm] Features: L2:0x7120306 Tiler:0x809
>Mem:0x301 MMU:0x2830 AS:0xff
>[ 9.796265] panthor fb000000.gpu: [drm] shader_present=0x50005
>l2_present=0x1 tiler_present=0x1
>[ 9.851869] panthor fb000000.gpu: [drm] Firmware protected mode entry not
>be supported, ignoring
>[ 9.851921] panthor fb000000.gpu: [drm] Firmware git sha:
>814b47b551159067b67a37c4e9adda458ad9d852
>[ 9.852127] panthor fb000000.gpu: [drm] CSF FW using interface v1.1.0,
>Features 0x0 Instrumentation features 0x71
>[ 9.852436] [drm] Initialized panthor 1.3.0 for fb000000.gpu on minor 0
>[ 10.003108] rockchip-drm display-subsystem: bound fdd90000.vop (ops
>vop2_component_ops)
>[ 10.004705] rockchip-drm display-subsystem: bound fde60000.dp (ops
>dw_dp_rockchip_component_ops)
>[ 10.006085] rockchip-drm display-subsystem: bound fdea0000.hdmi (ops
>dw_hdmi_qp_rockchip_ops)
>[ 10.006679] [drm] Initialized rockchip 1.0.0 for display-subsystem on minor
>1
>[ 10.006737] rockchip-drm display-subsystem: [drm] Cannot find any crtc or
>sizes
>[ 10.007663] rockchip-drm display-subsystem: [drm] Cannot find any crtc or
>sizes
>
>Unfortunately still nothing on screen
>
>dri state: https://gist.github.com/warpme/5e971dfd2e9fd52fae76641831cebe46
>
>and kernel dmesg https://termbin.com/r0m3
>
>i’m not sure what is missing (some dts enablement or….)
From your dts, I find you use gpio for hpd, I'm not sure how to handle it
with upstream code now.
&dp1 {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&dp1_hpd>;
hpd-gpios = <&gpio3 RK_PD5 GPIO_ACTIVE_HIGH>;
};
I suggest a change like this:
&dp1 {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&dp1m0_pins>;
};
And also remove dp1_hpd pinctrl in your dts.
Then when you DP cable plugin, you can run command as bellow to see if the
driver detects the HPD:
# cat /sys/class/drm/card0-DP-1/status
connected
#
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