| Message ID | 20220127023453.262136-1-acelan.kao@canonical.com |
|---|---|
| Headers | show |
| Series | The display output on type-c hub doesn't work on ADL platform | expand |
Acked-by: Tim Gardner <tim.gardner@canonical.com> This patch should disappear once its merged upstream and bubbles down via stable. On 1/26/22 7:34 PM, AceLan Kao wrote: > From: "Chia-Lin Kao (AceLan)" <acelan.kao@canonical.com> > > BugLink: https://bugs.launchpad.net/bugs/1959061 > > [Impact] > The display output(DP/HDMI) on the USB type-c hub doesn't work. No display > output device could be found after the monitor is plugged into the hub. > > [Fix] > Intel provide a new patch to fix this issue on ADL platforms. > > [Test] > Verified on ADL platform with different type-c hubs, the display output > works. > > [Where problems could occur] > The TCSS_DDI_STATUS register is indexed by tc_port not by the FIA port > index. So, this patch is more like a fix and only affect ADL platforms. > And as the commit log describes, the value is wrong on TC#3/4 ports, > so it won't affect the origin working ports. > > Imre Deak (1): > UBUNTU: SAUCE: drm/i915/adlp: Fix TypeC PHY-ready status readout > > drivers/gpu/drm/i915/display/intel_tc.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) >
On 27.1.2022 4.34, AceLan Kao wrote: > From: "Chia-Lin Kao (AceLan)" <acelan.kao@canonical.com> > > BugLink: https://bugs.launchpad.net/bugs/1959061 > > [Impact] > The display output(DP/HDMI) on the USB type-c hub doesn't work. No display > output device could be found after the monitor is plugged into the hub. > > [Fix] > Intel provide a new patch to fix this issue on ADL platforms. > > [Test] > Verified on ADL platform with different type-c hubs, the display output > works. > > [Where problems could occur] > The TCSS_DDI_STATUS register is indexed by tc_port not by the FIA port > index. So, this patch is more like a fix and only affect ADL platforms. > And as the commit log describes, the value is wrong on TC#3/4 ports, > so it won't affect the origin working ports. > > Imre Deak (1): > UBUNTU: SAUCE: drm/i915/adlp: Fix TypeC PHY-ready status readout > > drivers/gpu/drm/i915/display/intel_tc.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > applied to oem-5.14, thanks
From: "Chia-Lin Kao (AceLan)" <acelan.kao@canonical.com> BugLink: https://bugs.launchpad.net/bugs/1959061 [Impact] The display output(DP/HDMI) on the USB type-c hub doesn't work. No display output device could be found after the monitor is plugged into the hub. [Fix] Intel provide a new patch to fix this issue on ADL platforms. [Test] Verified on ADL platform with different type-c hubs, the display output works. [Where problems could occur] The TCSS_DDI_STATUS register is indexed by tc_port not by the FIA port index. So, this patch is more like a fix and only affect ADL platforms. And as the commit log describes, the value is wrong on TC#3/4 ports, so it won't affect the origin working ports. Imre Deak (1): UBUNTU: SAUCE: drm/i915/adlp: Fix TypeC PHY-ready status readout drivers/gpu/drm/i915/display/intel_tc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)