The cdn-dp sub driver probes the device failed on PINEBOOK Pro.
kernel: cdn-dp fec00000.dp: [drm:cdn_dp_probe [rockchipdrm]] *ERROR* missing extcon or phy
kernel: cdn-dp: probe of fec00000.dp failed with error -22
Then, the device halts all of the DRM related device jobs. For example,
the operations: vop_component_ops, vop_component_ops and
rockchip_dp_component_ops cannot be bound to corresponding devices. So,
Xorg cannot find the correct DRM device.
This patch skips the probing failed devices to fix this issue.
Link: http://lists.infradead.org/pipermail/linux-rockchip/2020-September/022352.html
Signed-off-by: Jian-Hong Pan <[email protected]>
---
drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
index 0f3eb392fe39..de13588602b4 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
@@ -331,6 +331,12 @@ static struct component_match *rockchip_drm_match_add(struct device *dev)
if (!d)
break;
+ if (!d->driver) {
+ DRM_DEV_ERROR(d,
+ "%s did not probe successfully",
+ drv->driver.name);
+ continue;
+ }
device_link_add(dev, d, DL_FLAG_STATELESS);
component_match_add(dev, &match, compare_dev, d);
--
2.28.0
Hi,
Am Mittwoch, 23. September 2020, 08:59:00 CEST schrieb Jian-Hong Pan:
> The cdn-dp sub driver probes the device failed on PINEBOOK Pro.
>
> kernel: cdn-dp fec00000.dp: [drm:cdn_dp_probe [rockchipdrm]] *ERROR* missing extcon or phy
> kernel: cdn-dp: probe of fec00000.dp failed with error -22
>
> Then, the device halts all of the DRM related device jobs. For example,
> the operations: vop_component_ops, vop_component_ops and
> rockchip_dp_component_ops cannot be bound to corresponding devices. So,
> Xorg cannot find the correct DRM device.
>
> This patch skips the probing failed devices to fix this issue.
>
> Link: http://lists.infradead.org/pipermail/linux-rockchip/2020-September/022352.html
> Signed-off-by: Jian-Hong Pan <[email protected]>
> ---
> drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
> index 0f3eb392fe39..de13588602b4 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
> @@ -331,6 +331,12 @@ static struct component_match *rockchip_drm_match_add(struct device *dev)
>
> if (!d)
> break;
> + if (!d->driver) {
> + DRM_DEV_ERROR(d,
> + "%s did not probe successfully",
> + drv->driver.name);
> + continue;
> + }
How does this relate to drivers doing EPROBE_DEFER?
Very often you have sub-drivers defering probe as they still need another
resource, so excluding them in that case would not work?
Heiko
>
> device_link_add(dev, d, DL_FLAG_STATELESS);
> component_match_add(dev, &match, compare_dev, d);
>
On 2020-09-23 07:59, Jian-Hong Pan wrote:
> The cdn-dp sub driver probes the device failed on PINEBOOK Pro.
>
> kernel: cdn-dp fec00000.dp: [drm:cdn_dp_probe [rockchipdrm]] *ERROR* missing extcon or phy
> kernel: cdn-dp: probe of fec00000.dp failed with error -22
Wouldn't it make more sense to simply not enable the DisplayPort node in
the upstream DT, until the type-C phy work has been done to make it
usable at all? AIUI the "official" Manjaro kernel is carrying a bunch of
hacks to make type-C work via extcon, but they know that isn't an
upstreamable solution.
Robin.
> Then, the device halts all of the DRM related device jobs. For example,
> the operations: vop_component_ops, vop_component_ops and
> rockchip_dp_component_ops cannot be bound to corresponding devices. So,
> Xorg cannot find the correct DRM device.
>
> This patch skips the probing failed devices to fix this issue.
>
> Link: http://lists.infradead.org/pipermail/linux-rockchip/2020-September/022352.html
> Signed-off-by: Jian-Hong Pan <[email protected]>
> ---
> drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
> index 0f3eb392fe39..de13588602b4 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
> @@ -331,6 +331,12 @@ static struct component_match *rockchip_drm_match_add(struct device *dev)
>
> if (!d)
> break;
> + if (!d->driver) {
> + DRM_DEV_ERROR(d,
> + "%s did not probe successfully",
> + drv->driver.name);
> + continue;
> + }
>
> device_link_add(dev, d, DL_FLAG_STATELESS);
> component_match_add(dev, &match, compare_dev, d);
>
Am Mittwoch, 23. September 2020, 13:05:26 CEST schrieb Robin Murphy:
> On 2020-09-23 07:59, Jian-Hong Pan wrote:
> > The cdn-dp sub driver probes the device failed on PINEBOOK Pro.
> >
> > kernel: cdn-dp fec00000.dp: [drm:cdn_dp_probe [rockchipdrm]] *ERROR* missing extcon or phy
> > kernel: cdn-dp: probe of fec00000.dp failed with error -22
>
> Wouldn't it make more sense to simply not enable the DisplayPort node in
> the upstream DT, until the type-C phy work has been done to make it
> usable at all?
Or alternatively just disable the cdn-dp Rockchip driver in the kernel config,
which results in it also not getting probed.
> AIUI the "official" Manjaro kernel is carrying a bunch of
> hacks to make type-C work via extcon, but they know that isn't an
> upstreamable solution.
>
> Robin.
>
> > Then, the device halts all of the DRM related device jobs. For example,
> > the operations: vop_component_ops, vop_component_ops and
> > rockchip_dp_component_ops cannot be bound to corresponding devices. So,
> > Xorg cannot find the correct DRM device.
> >
> > This patch skips the probing failed devices to fix this issue.
> >
> > Link: http://lists.infradead.org/pipermail/linux-rockchip/2020-September/022352.html
> > Signed-off-by: Jian-Hong Pan <[email protected]>
> > ---
> > drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 6 ++++++
> > 1 file changed, 6 insertions(+)
> >
> > diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
> > index 0f3eb392fe39..de13588602b4 100644
> > --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
> > +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
> > @@ -331,6 +331,12 @@ static struct component_match *rockchip_drm_match_add(struct device *dev)
> >
> > if (!d)
> > break;
> > + if (!d->driver) {
> > + DRM_DEV_ERROR(d,
> > + "%s did not probe successfully",
> > + drv->driver.name);
> > + continue;
> > + }
> >
> > device_link_add(dev, d, DL_FLAG_STATELESS);
> > component_match_add(dev, &match, compare_dev, d);
> >
>
Heiko Stübner <[email protected]> 於 2020年9月23日 週三 下午7:16寫道：
>
> Am Mittwoch, 23. September 2020, 13:05:26 CEST schrieb Robin Murphy:
> > On 2020-09-23 07:59, Jian-Hong Pan wrote:
> > > The cdn-dp sub driver probes the device failed on PINEBOOK Pro.
> > >
> > > kernel: cdn-dp fec00000.dp: [drm:cdn_dp_probe [rockchipdrm]] *ERROR* missing extcon or phy
> > > kernel: cdn-dp: probe of fec00000.dp failed with error -22
> >
> > Wouldn't it make more sense to simply not enable the DisplayPort node in
> > the upstream DT, until the type-C phy work has been done to make it
> > usable at all?
>
> Or alternatively just disable the cdn-dp Rockchip driver in the kernel config,
> which results in it also not getting probed.
This may be the simplest way.
However, considering generic distro kernels have a policy to enable
all drivers, disabling the DisplayPort node in the upstream DT, until
the type-C phy work has been done may be a better solution for now.
I can prepare a patch for this.
Jian-Hong Pan
> > AIUI the "official" Manjaro kernel is carrying a bunch of
> > hacks to make type-C work via extcon, but they know that isn't an
> > upstreamable solution.
> >
> > Robin.
> >
> > > Then, the device halts all of the DRM related device jobs. For example,
> > > the operations: vop_component_ops, vop_component_ops and
> > > rockchip_dp_component_ops cannot be bound to corresponding devices. So,
> > > Xorg cannot find the correct DRM device.
> > >
> > > This patch skips the probing failed devices to fix this issue.
> > >
> > > Link: http://lists.infradead.org/pipermail/linux-rockchip/2020-September/022352.html
> > > Signed-off-by: Jian-Hong Pan <[email protected]>
> > > ---
> > > drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 6 ++++++
> > > 1 file changed, 6 insertions(+)
> > >
> > > diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
> > > index 0f3eb392fe39..de13588602b4 100644
> > > --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
> > > +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
> > > @@ -331,6 +331,12 @@ static struct component_match *rockchip_drm_match_add(struct device *dev)
> > >
> > > if (!d)
> > > break;
> > > + if (!d->driver) {
> > > + DRM_DEV_ERROR(d,
> > > + "%s did not probe successfully",
> > > + drv->driver.name);
> > > + continue;
> > > + }
> > >
> > > device_link_add(dev, d, DL_FLAG_STATELESS);
> > > component_match_add(dev, &match, compare_dev, d);