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| author | Yangbo Lu <yangbo.lu@nxp.com> | 2020-04-10 10:47:05 +0800 |
|---|---|---|
| committer | Petr Štetiar <ynezz@true.cz> | 2020-05-07 12:53:06 +0200 |
| commit | cddd4591404fb4c53dc0b3c0b15b942cdbed4356 (patch) | |
| tree | 392c1179de46b0f804e3789edca19069b64e6b44 /target/linux/layerscape/patches-5.4/805-display-0053-LF-323-2-drm-bridge-cdns-enhance-link-training-stabi.patch | |
| parent | d1d2c0b5579ea4f69a42246c9318539d61ba1999 (diff) | |
| download | upstream-cddd4591404fb4c53dc0b3c0b15b942cdbed4356.tar.gz upstream-cddd4591404fb4c53dc0b3c0b15b942cdbed4356.tar.bz2 upstream-cddd4591404fb4c53dc0b3c0b15b942cdbed4356.zip | |
layerscape: add patches-5.4
Add patches for linux-5.4. The patches are from NXP LSDK-20.04 release
which was tagged LSDK-20.04-V5.4.
https://source.codeaurora.org/external/qoriq/qoriq-components/linux/
For boards LS1021A-IOT, and Traverse-LS1043 which are not involved in
LSDK, port the dts patches from 4.14.
The patches are sorted into the following categories:
301-arch-xxxx
302-dts-xxxx
303-core-xxxx
701-net-xxxx
801-audio-xxxx
802-can-xxxx
803-clock-xxxx
804-crypto-xxxx
805-display-xxxx
806-dma-xxxx
807-gpio-xxxx
808-i2c-xxxx
809-jailhouse-xxxx
810-keys-xxxx
811-kvm-xxxx
812-pcie-xxxx
813-pm-xxxx
814-qe-xxxx
815-sata-xxxx
816-sdhc-xxxx
817-spi-xxxx
818-thermal-xxxx
819-uart-xxxx
820-usb-xxxx
821-vfio-xxxx
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Diffstat (limited to 'target/linux/layerscape/patches-5.4/805-display-0053-LF-323-2-drm-bridge-cdns-enhance-link-training-stabi.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/805-display-0053-LF-323-2-drm-bridge-cdns-enhance-link-training-stabi.patch | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/805-display-0053-LF-323-2-drm-bridge-cdns-enhance-link-training-stabi.patch b/target/linux/layerscape/patches-5.4/805-display-0053-LF-323-2-drm-bridge-cdns-enhance-link-training-stabi.patch new file mode 100644 index 0000000000..dec3d78b05 --- /dev/null +++ b/target/linux/layerscape/patches-5.4/805-display-0053-LF-323-2-drm-bridge-cdns-enhance-link-training-stabi.patch @@ -0,0 +1,36 @@ +From 06b758a32bb5ca164cff60f20173ecd71508c5ae Mon Sep 17 00:00:00 2001 +From: Sandor Yu <Sandor.yu@nxp.com> +Date: Mon, 9 Dec 2019 17:58:29 +0800 +Subject: [PATCH] LF-323-2: drm/bridge/cdns: enhance link training stability + +Remove drm_dp_link_power_down from bridge_disable function, +in case some DP sinks aren't follow DP 1.1 specification +and can not exit the power saving state within 1 ms. +Add drm_dp_link_power_up to bridge_enable function, +make sure DP sinks are power up before link training. + +Signed-off-by: Sandor Yu <Sandor.yu@nxp.com> +Reviewed-by: Robby Cai <robby.cai@nxp.com> +--- + drivers/gpu/drm/bridge/cadence/cdns-dp-core.c | 3 ++- + 1 file changed, 2 insertions(+), 1 deletion(-) + +--- a/drivers/gpu/drm/bridge/cadence/cdns-dp-core.c ++++ b/drivers/gpu/drm/bridge/cadence/cdns-dp-core.c +@@ -329,6 +329,8 @@ static void cdn_hdp_bridge_enable(struct + struct cdns_mhdp_device *mhdp = bridge->driver_private; + int ret; + ++ drm_dp_link_power_up(&mhdp->dp.aux, &mhdp->dp.link); ++ + /* Link trainning */ + ret = cdns_mhdp_train_link(mhdp); + if (ret) { +@@ -348,7 +350,6 @@ static void cdn_hdp_bridge_disable(struc + struct cdns_mhdp_device *mhdp = bridge->driver_private; + + cdns_mhdp_set_video_status(mhdp, CONTROL_VIDEO_IDLE); +- drm_dp_link_power_down(&mhdp->dp.aux, &mhdp->dp.link); + } + + static const struct drm_bridge_funcs cdns_dp_bridge_funcs = { |