* [PATCH v2 0/2] arm64: qcom: shikra-iqs-evk: Add LT9611UXD HDMI bridge support
@ 2026-07-16 19:30 mohit.dsor
2026-07-16 19:30 ` [PATCH v2 1/2] arm64: dts: " mohit.dsor
2026-07-16 19:30 ` [PATCH v2 2/2] arm64: defconfig: Enable LT9611C bridge driver mohit.dsor
0 siblings, 2 replies; 4+ messages in thread
From: mohit.dsor @ 2026-07-16 19:30 UTC (permalink / raw)
To: Bjorn Andersson, Konrad Dybcio, Rob Herring, Krzysztof Kozlowski,
Conor Dooley
Cc: linux-kernel, Mohit Dsor, linux-arm-msm, devicetree,
venkata.valluru, Jessica Zhang, Mohit Dsor
Add MDSS display and LT9611UXD DSI-to-HDMI bridge support for the
Shikra IQS EVK, and enable the LT9611C bridge driver in defconfig.
---
Changes in v2:
- Removed port-select property.
- reset and irq is aligned as per driver.
- Rebase on top of shikra-display-v4 series to pass schema check.
- Link to v1 [1/2]: https://lore.kernel.org/lkml/20260627-shikra-dt-changes-v1-5-449a402673d0@oss.qualcomm.com/
- Link to v1 [2/2]: https://lore.kernel.org/lkml/20260618-shikra-work-v1-1-dc30381263f9@oss.qualcomm.com/
prerequisite-message-id: <20260714-shikra-dt-m1-v6-0-bee265d3499b@oss.qualcomm.com>
prerequisite-message-id: <20260703-shikra-dispcc-gpucc-v5-0-cc13826d4d5a@oss.qualcomm.com>
prerequisite-message-id: <20260608-shikra-display-v4-0-88a846afdd5d@oss.qualcomm.com>
prerequisite-message-id: <20260716-lt9611c-v7-v7-0-7553a14735fc@oss.qualcomm.com>
prerequisite-message-id: <20260713-shikra-dt-changes-v3-0-15102fca9570@oss.qualcomm.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Mohit Dsor <mohit.dsor@oss.qualcomm.com>
To: Bjorn Andersson <andersson@kernel.org>
To: Konrad Dybcio <konradybcio@kernel.org>
To: Rob Herring <robh@kernel.org>
To: Krzysztof Kozlowski <krzk+dt@kernel.org>
To: Conor Dooley <conor+dt@kernel.org>
Cc: linux-arm-msm@vger.kernel.org
Cc: devicetree@vger.kernel.org
To: Bjorn Andersson <andersson@kernel.org>
To: Konrad Dybcio <konradybcio@kernel.org>
To: Rob Herring <robh@kernel.org>
To: Krzysztof Kozlowski <krzk+dt@kernel.org>
To: Conor Dooley <conor+dt@kernel.org>
Cc: linux-arm-msm@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
base-commit: cc2b5f627e8ccbae1188ef2d8be3e451d7f933a5
change-id: 20260618-shikra-work-ea756b564b2d
---
Mohit Dsor (2):
arm64: dts: qcom: shikra-iqs-evk: Add LT9611UXD HDMI bridge support
arm64: defconfig: Enable LT9611C bridge driver
arch/arm64/boot/dts/qcom/shikra-iqs-evk.dts | 118 ++++++++++++++++++++++++++++
arch/arm64/configs/defconfig | 1 +
2 files changed, 119 insertions(+)
---
base-commit: cc2b5f627e8ccbae1188ef2d8be3e451d7f933a5
change-id: 20260618-shikra-work-ea756b564b2d
prerequisite-message-id: <20260714-shikra-dt-m1-v6-0-bee265d3499b@oss.qualcomm.com>
prerequisite-patch-id: 48ecd66c06c4fad81f91283c26ec57d95bbde29d
prerequisite-patch-id: 7d92e5a301d09616840e54dc9e4a81f30a64383c
prerequisite-patch-id: be1a16f53e23dd5ab90210a056c9da3559c6186d
prerequisite-patch-id: 3eff04500c55100c763aeac1f1f8c5768d500500
prerequisite-patch-id: ab22c5fdb2fa65b78ffef76bbe4459c8d5ffe7b2
prerequisite-patch-id: cb24efedb648271ef5c60ace96e2366d89254e8f
prerequisite-patch-id: 8be7df0395c5847a988c7e814c7db878b5932b11
prerequisite-patch-id: 0510992d022cef7317b6efee6765ac78c0225356
prerequisite-patch-id: de4327fcbe81f92a337f429b74e8220969a5b79f
prerequisite-patch-id: e13435365cba0b6ecfcea6d9e5ab72838fba23a7
prerequisite-patch-id: 90f78668eb969c16ed8c2485d75a60a183fc4b8e
prerequisite-message-id: <20260703-shikra-dispcc-gpucc-v5-0-cc13826d4d5a@oss.qualcomm.com>
prerequisite-patch-id: 23b24fb512c882a045ed8339b22269bfc2c5d02c
prerequisite-patch-id: 0e79e46bc5a88849a2f0a410b39c08f3244dfed3
prerequisite-patch-id: 17b412a37859fba801efdbe451db31e5bd77438b
prerequisite-patch-id: 0396ac157aba73a5afd7ba4a8a744847f5a7b433
prerequisite-patch-id: 2b1aecd97b9c073a1b323138cd7a98cb34e3715f
prerequisite-patch-id: 823bc7bc713f6fce1b9de47a266307f1829636b9
prerequisite-patch-id: 1b990e46422307e558300815c1166b90d96fbb9d
prerequisite-patch-id: d78e0b95758b82977d80c7cf18da49661cd181e5
prerequisite-patch-id: f62b00cd64ac3191e0906514443dd43e88746818
prerequisite-patch-id: 0fab99455f954a917fb65348656505cd7ab45bc2
prerequisite-patch-id: b59fd05f9b62bda86079c9d86538b80289110862
prerequisite-patch-id: 71691d8b40e36cdbff6a52c3999ea8bb2c164d70
prerequisite-patch-id: b2868bc50d74afd13c8a0d0fd62301fa9546a211
prerequisite-patch-id: f83f24719ac475317507af09bf08b4a69b02d429
prerequisite-patch-id: c9f2942207341ad4f450b20f049199f35188c02a
prerequisite-patch-id: 3a6e9752793f2d7b084008b47daed10ea572064a
prerequisite-patch-id: 3338cdc5915c1e6b991067d3a7afb734c182663e
prerequisite-patch-id: 59cf68a3a49958a60833aa0464980f8c8d879961
prerequisite-patch-id: 5d146a518f2f76bf9fe93e23a2cfa63c73731883
prerequisite-message-id: <20260608-shikra-display-v4-0-88a846afdd5d@oss.qualcomm.com>
prerequisite-patch-id: cb558078597001d82e7291547b0eac4bd13c9d07
prerequisite-patch-id: e04ee45d80392481fcb025858f5af6352ecf1000
prerequisite-message-id: <20260716-lt9611c-v7-v7-0-7553a14735fc@oss.qualcomm.com>
prerequisite-patch-id: e9ce15b4a5842cfde130a813afecf136798179f4
prerequisite-patch-id: 2fb20282e4f0afa161797319ea7031e9f6318408
prerequisite-message-id: <20260713-shikra-dt-changes-v3-0-15102fca9570@oss.qualcomm.com>
prerequisite-patch-id: 6fa1d972a8be6b346ade96ab50d5c38b873cc028
prerequisite-patch-id: f0038f836d71e64fd5fd527906bb218115c1fbac
prerequisite-patch-id: dbccb759a76fdf39e8f7fa3f9c00d0f857f23470
prerequisite-patch-id: e15cf7dc3b1734a4eb3f468e6ba8d697f4ca92a8
Best regards,
--
Mohit Dsor <mdsor@oss.qualcomm.com>
^ permalink raw reply [flat|nested] 4+ messages in thread* [PATCH v2 1/2] arm64: dts: qcom: shikra-iqs-evk: Add LT9611UXD HDMI bridge support
2026-07-16 19:30 [PATCH v2 0/2] arm64: qcom: shikra-iqs-evk: Add LT9611UXD HDMI bridge support mohit.dsor
@ 2026-07-16 19:30 ` mohit.dsor
2026-07-17 9:17 ` Konrad Dybcio
2026-07-16 19:30 ` [PATCH v2 2/2] arm64: defconfig: Enable LT9611C bridge driver mohit.dsor
1 sibling, 1 reply; 4+ messages in thread
From: mohit.dsor @ 2026-07-16 19:30 UTC (permalink / raw)
To: Bjorn Andersson, Konrad Dybcio, Rob Herring, Krzysztof Kozlowski,
Conor Dooley
Cc: linux-kernel, Mohit Dsor, linux-arm-msm, devicetree,
venkata.valluru, Jessica Zhang, Mohit Dsor
From: Mohit Dsor <mdsor@oss.qualcomm.com>
Enable the Shikra MDSS display subsystem on the Qualcomm Shikra IQS
EVK board and add the Lontium LT9611UXD DSI-to-HDMI bridge node.
The LT9611UXD 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 and drives an HDMI-A
connector, with the link wired as: DPU -> DSI0 -> LT9611UXD -> HDMI.
Signed-off-by: Mohit Dsor <mohit.dsor@oss.qualcomm.com>
---
arch/arm64/boot/dts/qcom/shikra-iqs-evk.dts | 118 ++++++++++++++++++++++++++++
1 file changed, 118 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/shikra-iqs-evk.dts b/arch/arm64/boot/dts/qcom/shikra-iqs-evk.dts
index 3a6962388dfd..9e602b5d4776 100644
--- a/arch/arm64/boot/dts/qcom/shikra-iqs-evk.dts
+++ b/arch/arm64/boot/dts/qcom/shikra-iqs-evk.dts
@@ -7,6 +7,8 @@
#include "shikra-iqs-som.dtsi"
#include "shikra-evk.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
/ {
model = "Qualcomm Technologies, Inc. Shikra IQS EVK";
@@ -21,6 +23,107 @@ aliases {
chosen {
stdout-path = "serial0:115200n8";
};
+
+ hdmi-connector {
+ compatible = "hdmi-connector";
+ type = "a";
+
+ port {
+ hdmi_con: endpoint {
+ remote-endpoint = <<9611_out>;
+ };
+ };
+ };
+
+ vreg_lt9611_vcc: regulator-lt9611-vcc {
+ compatible = "regulator-fixed";
+ regulator-name = "lt9611_vcc";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ gpio = <&pm8150_gpios 4 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ pinctrl-0 = <&hdmi_reg_en>;
+ pinctrl-names = "default";
+ };
+
+ vreg_lt9611_vdd: regulator-lt9611-vdd {
+ compatible = "regulator-fixed";
+ regulator-name = "lt9611_vdd";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-always-on;
+ };
+};
+
+&i2c4 {
+ status = "okay";
+
+ lt9611uxd: lt9611uxd@41 {
+ compatible = "lontium,lt9611uxd";
+ reg = <0x41>;
+ interrupts-extended = <&tlmm 85 IRQ_TYPE_EDGE_FALLING>;
+ reset-gpios = <&tlmm 76 GPIO_ACTIVE_LOW>;
+ vcc-supply = <&vreg_lt9611_vcc>;
+ vdd-supply = <&vreg_lt9611_vdd>;
+
+ pinctrl-0 = <<9611_irq_pin <9611_rst_pin>;
+ pinctrl-names = "default";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+
+ lt9611_a: endpoint {
+ remote-endpoint = <&mdss_dsi0_out>;
+ };
+ };
+
+ port@2 {
+ reg = <2>;
+
+ lt9611_out: endpoint {
+ remote-endpoint = <&hdmi_con>;
+ };
+ };
+ };
+ };
+};
+
+&mdss {
+ status = "okay";
+};
+
+&mdss_dsi0 {
+ vdda-supply = <&pm8150_l11>;
+
+ status = "okay";
+};
+
+&mdss_dsi0_out {
+ remote-endpoint = <<9611_a>;
+ data-lanes = <0 1 2 3>;
+};
+
+&mdss_dsi0_phy {
+ status = "okay";
+};
+
+&pm8150_gpios {
+ hdmi_reg_en: hdmi-reg-en-state {
+ pins = "gpio4";
+ function = PMIC_GPIO_FUNC_NORMAL;
+ bias-disable;
+ };
+};
+
+&pm8150_l11 {
+ /* DSI VDDA - must be at NOM voltage for PHY PLL lock */
+ regulator-min-microvolt = <1232000>;
+ regulator-max-microvolt = <1232000>;
+ regulator-allow-set-load;
};
&remoteproc_cdsp {
@@ -64,4 +167,19 @@ &tlmm {
<30 2>, /* NFC SPI */
<138 1>, /* NFC Secure IO */
<155 11>; /* eMMC Boot */
+
+ lt9611_irq_pin: lt9611-irq-state {
+ pins = "gpio85";
+ function = "gpio";
+ drive-strength = <2>;
+ bias-disable;
+ };
+
+ lt9611_rst_pin: lt9611-rst-state {
+ pins = "gpio76";
+ function = "gpio";
+ drive-strength = <8>;
+ bias-disable;
+ };
};
+
--
2.34.1
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH v2 1/2] arm64: dts: qcom: shikra-iqs-evk: Add LT9611UXD HDMI bridge support
2026-07-16 19:30 ` [PATCH v2 1/2] arm64: dts: " mohit.dsor
@ 2026-07-17 9:17 ` Konrad Dybcio
0 siblings, 0 replies; 4+ messages in thread
From: Konrad Dybcio @ 2026-07-17 9:17 UTC (permalink / raw)
To: mohit.dsor, Bjorn Andersson, Konrad Dybcio, Rob Herring,
Krzysztof Kozlowski, Conor Dooley
Cc: linux-kernel, linux-arm-msm, devicetree, venkata.valluru,
Jessica Zhang, Mohit Dsor
On 7/16/26 9:30 PM, mohit.dsor@oss.qualcomm.com wrote:
> From: Mohit Dsor <mdsor@oss.qualcomm.com>
>
> Enable the Shikra MDSS display subsystem on the Qualcomm Shikra IQS
> EVK board and add the Lontium LT9611UXD DSI-to-HDMI bridge node.
>
> The LT9611UXD 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 and drives an HDMI-A
> connector, with the link wired as: DPU -> DSI0 -> LT9611UXD -> HDMI.
>
> Signed-off-by: Mohit Dsor <mohit.dsor@oss.qualcomm.com>
> ---
Does the other EVK not have this same hardware?
[...]
> +&pm8150_l11 {
> + /* DSI VDDA - must be at NOM voltage for PHY PLL lock */
This comment is superfluous
Konrad
^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH v2 2/2] arm64: defconfig: Enable LT9611C bridge driver
2026-07-16 19:30 [PATCH v2 0/2] arm64: qcom: shikra-iqs-evk: Add LT9611UXD HDMI bridge support mohit.dsor
2026-07-16 19:30 ` [PATCH v2 1/2] arm64: dts: " mohit.dsor
@ 2026-07-16 19:30 ` mohit.dsor
1 sibling, 0 replies; 4+ messages in thread
From: mohit.dsor @ 2026-07-16 19:30 UTC (permalink / raw)
To: Bjorn Andersson, Konrad Dybcio, Rob Herring, Krzysztof Kozlowski,
Conor Dooley
Cc: linux-kernel, Mohit Dsor, linux-arm-msm, devicetree,
venkata.valluru, Jessica Zhang, Mohit Dsor
From: Mohit Dsor <mdsor@oss.qualcomm.com>
Enable the Lontium LT9611C DSI-to-HDMI bridge driver as a module.
This driver supports the LT9611UXD chip used on the Shikra IQS EVK
board to provide HDMI output via the MDSS DSI interface.
Signed-off-by: Mohit Dsor <mohit.dsor@oss.qualcomm.com>
---
arch/arm64/configs/defconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index e1d8e65782d0..8a6922199545 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -965,6 +965,7 @@ CONFIG_DRM_I2C_NXP_TDA998X=m
CONFIG_DRM_ITE_IT6263=m
CONFIG_DRM_LONTIUM_LT8912B=m
CONFIG_DRM_LONTIUM_LT9611=m
+CONFIG_DRM_LONTIUM_LT9611C=m
CONFIG_DRM_LONTIUM_LT9611UXC=m
CONFIG_DRM_LONTIUM_LT8713SX=m
CONFIG_DRM_ITE_IT66121=m
--
2.34.1
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2026-07-17 9:17 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2026-07-16 19:30 [PATCH v2 0/2] arm64: qcom: shikra-iqs-evk: Add LT9611UXD HDMI bridge support mohit.dsor
2026-07-16 19:30 ` [PATCH v2 1/2] arm64: dts: " mohit.dsor
2026-07-17 9:17 ` Konrad Dybcio
2026-07-16 19:30 ` [PATCH v2 2/2] arm64: defconfig: Enable LT9611C bridge driver mohit.dsor
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