[PATCH v3 0/5] k3-am68-phyboard-izar dsi support

Dominik Haller
2026-03-11T23:49:06Z

This series adds support for the two dsi based display interfaces of the
phyboard-izar with the phycore-am68x/tda4x som.

dsi0 gets converted to lvds on the som using a SN65DSI83 bridge in the
default configuration. The phyboard-izar kit comes with a 10.1" lvds
display with usb touch as addon.

dsi1 is routed to the carrier board onto a connector. To use that Phytec
has developed a small extension board "PEB-AV-15" with a Lontium LT8912B
dsi->hdmi bridge.

Changes for v2:
- Drop the following patch as it got merged in the last window:
dt-bindings: display: bridge: lt8912b: Drop reset gpio requirement

- In arm64: dts: ti: k3-am68-phyboard-izar: Add LVDS-Display
Reduce pwm frequency to ~23kHz for the backlight. This is supported by
the backlight and works better with most fans. Since the fan connector
is using PWM0_A and the backlight PWM0_B they need to use the same
frequency.

- In arm64: dts: ti: k3-am68-phyboard-izar: Add PEB-AV-15 overlay
Fix license in boilerplate: s/GPL-2.0-or-only or MIT/GPL-2.0-only OR MIT

Link to v1:
https://lore.kernel.org/linux-devicetree/20260130205820.83189-1-d.haller@phytec.de/

Changes for v3:
- In arm64: dts: ti: k3-j721s2-main: Add DSI1
Pick up Beleswar's Reviewed-by from v1

- In arm64: dts: ti: k3-am68-phyboard-izar: Add PEB-AV-15 overlay
Fix the remaining style issues pointed out by Vignesh in v2

Link to v2:
https://lore.kernel.org/linux-devicetree/20260306033151.276202-1-d.haller@phytec.de/

Dominik Haller (5):
arm64: dts: ti: k3-am68-phyboard-izar: Assign dss clocks
arm64: dts: ti: k3-am68-phycore-som: Add DSI->LVDS bridge
arm64: dts: ti: k3-am68-phyboard-izar: Add LVDS-Display
arm64: dts: ti: k3-j721s2-main: Add DSI1
arm64: dts: ti: k3-am68-phyboard-izar: Add PEB-AV-15 overlay

arch/arm64/boot/dts/ti/Makefile | 8 +
...-am68-phyboard-izar-lvds-ph128800t006.dtso | 125 ++++++++++++
.../ti/k3-am68-phyboard-izar-peb-av-15.dtso | 192 ++++++++++++++++++
.../boot/dts/ti/k3-am68-phyboard-izar.dts | 18 ++
.../boot/dts/ti/k3-am68-phycore-som.dtsi | 17 ++
arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi | 39 ++++
6 files changed, 399 insertions(+)
create mode 100644 arch/arm64/boot/dts/ti/k3-am68-phyboard-izar-lvds-ph128800t006.dtso
create mode 100644 arch/arm64/boot/dts/ti/k3-am68-phyboard-izar-peb-av-15.dtso

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2.43.0