Skip to content

arm64: dts: qcom: shikra: Add LT9611UXD HDMI bridge and overlay support - #1813

Merged
Shiraz Hashim (shashim-quic) merged 4 commits into
qualcomm-linux:tech/all/shikrafrom
mohitdsor:shikra_display_overlays
Sep 11, 2026
Merged

arm64: dts: qcom: shikra: Add LT9611UXD HDMI bridge and overlay support#1813
Shiraz Hashim (shashim-quic) merged 4 commits into
qualcomm-linux:tech/all/shikrafrom
mohitdsor:shikra_display_overlays

Conversation

@mohitdsor

@mohitdsor mohitdsor commented Sep 11, 2026

Copy link
Copy Markdown

Add LT9611UXD DSI-to-HDMI bridge support for the Shikra IQS EVK board
and introduce DT overlay infrastructure for HDMI and panel configurations.

The LT9611UXD bridge is connected via I2C bus 4 (address 0x41), powered
by a GPIO-controlled 3.3V regulator (PM8150 GPIO4) and an always-on 1.8V
rail. Reset is on GPIO76 and interrupt on GPIO85. The bridge receives DSI
output from MDSS DSI0 and drives an HDMI-A connector.

Changes:

Add LT9611UXD HDMI bridge node, MDSS display enable, regulators and
pinctrl for Shikra IQS EVK
Rename HDMI bridge regulators and pinctrl to generic names
(vreg_disp_3p3, bridge_irq_pin, bridge_rst_pin)
Add DT overlay files and Makefile entries for shikra-cqm-evk-hdmi,
shikra-cqs-evk-hdmi and shikra-iqs-evk-dlc-panel
Tested-on: Shikra IQS EVK with LT9611UXD HDMI bridge

Signed-off-by: Mohit Dsor mohit.dsor@oss.qualcomm.com

CRs-Fixed: 4673615

Exception Ticket : [QLIJIRA-197] Temporary Downstream Exception request to Enable Display interfaces in DT overlay for…

…ors and pinctrl

Rename lt9611-specific regulator and pinctrl labels to more generic
names since these are shared with other DSI panel interfaces.

- vreg_lt9611_vcc -> vreg_disp_3p3
- vreg_lt9611_vdd removed (vdd now sourced from pm8150_s4)
- hdmi_reg_en -> lcd_bias_en
- lt9611_irq_pin -> bridge_irq_pin
- lt9611_rst_pin -> bridge_rst_pin
- Add hdmi_connector label to hdmi-connector node

Signed-off-by: Mohit Dsor <mohit.dsor@oss.qualcomm.com>
Added DSI-HDMI overlays:
 - shikra-cqm-evk-hdmi: CQM EVK with LT9611UXD HDMI bridge overlay
 - shikra-cqs-evk-hdmi: CQS EVK with LT9611UXD HDMI bridge overlay

Signed-off-by: Mohit Dsor <mohit.dsor@oss.qualcomm.com>
Added DSI DLC panel support:
 - shikra-iqs-evk-dlc-panel: IQS EVK with DLC panel overlay

Signed-off-by: Mohit Dsor <mohit.dsor@oss.qualcomm.com>
@mohitdsor
mohitdsor changed the base branch from main to tech/all/shikra September 11, 2026 11:16
@mohitdsor mohitdsor changed the title Shikra display overlays arm64: dts: qcom: shikra: Add LT9611UXD HDMI bridge and overlay support Sep 11, 2026

@quicvvalluru quicvvalluru left a comment

Copy link
Copy Markdown

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

LGTM

Shikra IQS EVKs can optionally be fitted with an AUO G133HAN01 LVDS
panel driven through a TI SN65DSI84 DSI-to-LVDS bridge on i2c3.

Add a devicetree overlay that describes the SN65DSI84 bridge and the
AUO G133HAN01 panel, and disable HDMI.

Signed-off-by: Anand Tiwari <anand.tiwari@oss.qualcomm.com>
Signed-off-by: Mohit Dsor <mohit.dsor@oss.qualcomm.com>
@mohitdsor
mohitdsor force-pushed the shikra_display_overlays branch from 2aaac46 to 1421cf2 Compare September 11, 2026 12:41
@shashim-quic
Shiraz Hashim (shashim-quic) merged commit 708e731 into qualcomm-linux:tech/all/shikra Sep 11, 2026
4 of 6 checks passed
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Labels

None yet

Projects

None yet

Development

Successfully merging this pull request may close these issues.

3 participants