* [PATCH v2 1/9] arm64: dts: st: add i2c2 pins for stm32mp25
2026-02-10 10:03 [PATCH v2 0/9] Enable display support for STM32MP257F-DK and STM32MP235F-DK Raphael Gallais-Pou
@ 2026-02-10 10:03 ` Raphael Gallais-Pou
2026-02-10 10:03 ` [PATCH v2 2/9] arm64: dts: st: add ltdc support on stm32mp231 Raphael Gallais-Pou
` (9 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: Raphael Gallais-Pou @ 2026-02-10 10:03 UTC (permalink / raw)
To: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Maxime Coquelin,
Alexandre Torgue, Christophe Roullier
Cc: Philippe Cornu, Yannick Fertre, Raphaël Gallais-Pou,
devicetree, linux-stm32, linux-arm-kernel, linux-kernel
Add the i2c2 pins used on several boards.
Signed-off-by: Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com>
---
arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi b/arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi
index c34cd33cd855fb28b65a39b59b49e089345ce9a6..2f853f3fae6d84756300f19da32d6cb0297d9e20 100644
--- a/arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi
@@ -212,6 +212,23 @@ pins {
};
};
+ i2c2_pins_b: i2c2-1 {
+ pins {
+ pinmux = <STM32_PINMUX('F', 2, AF9)>, /* I2C2_SCL */
+ <STM32_PINMUX('F', 0, AF9)>; /* I2C2_SDA */
+ bias-disable;
+ drive-open-drain;
+ slew-rate = <0>;
+ };
+ };
+
+ i2c2_sleep_pins_b: i2c2-sleep-1 {
+ pins {
+ pinmux = <STM32_PINMUX('F', 2, ANALOG)>, /* I2C2_SCL */
+ <STM32_PINMUX('F', 0, ANALOG)>; /* I2C2_SDA */
+ };
+ };
+
ospi_port1_clk_pins_a: ospi-port1-clk-0 {
pins {
pinmux = <STM32_PINMUX('D', 0, AF10)>; /* OSPI1_CLK */
--
2.43.0
^ permalink raw reply related [flat|nested] 12+ messages in thread* [PATCH v2 2/9] arm64: dts: st: add ltdc support on stm32mp231
2026-02-10 10:03 [PATCH v2 0/9] Enable display support for STM32MP257F-DK and STM32MP235F-DK Raphael Gallais-Pou
2026-02-10 10:03 ` [PATCH v2 1/9] arm64: dts: st: add i2c2 pins for stm32mp25 Raphael Gallais-Pou
@ 2026-02-10 10:03 ` Raphael Gallais-Pou
2026-02-10 10:03 ` [PATCH v2 3/9] arm64: dts: st: add ltdc support on stm32mp235 Raphael Gallais-Pou
` (8 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: Raphael Gallais-Pou @ 2026-02-10 10:03 UTC (permalink / raw)
To: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Maxime Coquelin,
Alexandre Torgue, Christophe Roullier
Cc: Philippe Cornu, Yannick Fertre, Raphaël Gallais-Pou,
devicetree, linux-stm32, linux-arm-kernel, linux-kernel
The LCD-TFT Display Controller (LTDC) handles display composition,
scaling and rotation. It provides a parallel digital RGB flow to be
used by display interfaces.
Add the LTDC node.
Signed-off-by: Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com>
---
arch/arm64/boot/dts/st/stm32mp231.dtsi | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/arch/arm64/boot/dts/st/stm32mp231.dtsi b/arch/arm64/boot/dts/st/stm32mp231.dtsi
index 88e214d395ab7af53e2707dbc2dfc6b3d000a798..a6840882f512b132b69b917ccbc6cfd4a502a481 100644
--- a/arch/arm64/boot/dts/st/stm32mp231.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp231.dtsi
@@ -1178,6 +1178,18 @@ exti2: interrupt-controller@46230000 {
<&intc GIC_SPI 213 IRQ_TYPE_LEVEL_HIGH>; /* EXTI_70 */
};
+ ltdc: display-controller@48010000 {
+ compatible = "st,stm32mp251-ltdc";
+ reg = <0x48010000 0x400>;
+ interrupts = <GIC_SPI 158 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 159 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&rcc CK_KER_LTDC>, <&rcc CK_BUS_LTDC>;
+ clock-names = "lcd", "bus";
+ resets = <&rcc LTDC_R>;
+ access-controllers = <&rifsc 80>;
+ status = "disabled";
+ };
+
intc: interrupt-controller@4ac10000 {
compatible = "arm,gic-400";
reg = <0x4ac10000 0x1000>,
--
2.43.0
^ permalink raw reply related [flat|nested] 12+ messages in thread* [PATCH v2 3/9] arm64: dts: st: add ltdc support on stm32mp235
2026-02-10 10:03 [PATCH v2 0/9] Enable display support for STM32MP257F-DK and STM32MP235F-DK Raphael Gallais-Pou
2026-02-10 10:03 ` [PATCH v2 1/9] arm64: dts: st: add i2c2 pins for stm32mp25 Raphael Gallais-Pou
2026-02-10 10:03 ` [PATCH v2 2/9] arm64: dts: st: add ltdc support on stm32mp231 Raphael Gallais-Pou
@ 2026-02-10 10:03 ` Raphael Gallais-Pou
2026-02-10 10:03 ` [PATCH v2 4/9] arm64: dts: st: add lvds " Raphael Gallais-Pou
` (7 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: Raphael Gallais-Pou @ 2026-02-10 10:03 UTC (permalink / raw)
To: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Maxime Coquelin,
Alexandre Torgue, Christophe Roullier
Cc: Philippe Cornu, Yannick Fertre, Raphaël Gallais-Pou,
devicetree, linux-stm32, linux-arm-kernel, linux-kernel
Add the LTDC node for stm32mp235 SoC and handle its loopback clocks.
ck_ker_ltdc has the CLK_SET_RATE_PARENT flag. While having this flag is
semantically correct, it for now leads to an improper setting of the
clock rate. The ck_ker_ltdc parent clock is the flexgen 27, which does
not support changing rates yet. To overcome this issue, a fixed clock
can be used for the kernel clock.
Signed-off-by: Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com>
---
arch/arm64/boot/dts/st/stm32mp231.dtsi | 6 ++++++
arch/arm64/boot/dts/st/stm32mp235.dtsi | 6 ++++++
2 files changed, 12 insertions(+)
diff --git a/arch/arm64/boot/dts/st/stm32mp231.dtsi b/arch/arm64/boot/dts/st/stm32mp231.dtsi
index a6840882f512b132b69b917ccbc6cfd4a502a481..05055bc523850282a2e2b217b180930b39231189 100644
--- a/arch/arm64/boot/dts/st/stm32mp231.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp231.dtsi
@@ -45,6 +45,12 @@ clk_dsi_txbyte: clock-0 {
clock-frequency = <0>;
};
+ clk_flexgen_27_fixed: clk-54000000 {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ clock-frequency = <54000000>;
+ };
+
clk_rcbsec: clk-64000000 {
compatible = "fixed-clock";
#clock-cells = <0>;
diff --git a/arch/arm64/boot/dts/st/stm32mp235.dtsi b/arch/arm64/boot/dts/st/stm32mp235.dtsi
index 2719c088dd594ba90f683d8809b54fecf471ba40..ae98f503529f0a2473f250b4d9195820135ee1bc 100644
--- a/arch/arm64/boot/dts/st/stm32mp235.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp235.dtsi
@@ -5,6 +5,12 @@
*/
#include "stm32mp233.dtsi"
+<dc {
+ compatible = "st,stm32mp255-ltdc";
+ clocks = <&clk_flexgen_27_fixed>, <&rcc CK_BUS_LTDC>, <&syscfg>, <&lvds>;
+ clock-names = "lcd", "bus", "ref", "lvds";
+};
+
&rifsc {
vdec: vdec@480d0000 {
compatible = "st,stm32mp25-vdec";
--
2.43.0
^ permalink raw reply related [flat|nested] 12+ messages in thread* [PATCH v2 4/9] arm64: dts: st: add lvds support on stm32mp235
2026-02-10 10:03 [PATCH v2 0/9] Enable display support for STM32MP257F-DK and STM32MP235F-DK Raphael Gallais-Pou
` (2 preceding siblings ...)
2026-02-10 10:03 ` [PATCH v2 3/9] arm64: dts: st: add ltdc support on stm32mp235 Raphael Gallais-Pou
@ 2026-02-10 10:03 ` Raphael Gallais-Pou
2026-02-10 10:03 ` [PATCH v2 5/9] arm64: dts: st: add clock-cells to syscfg node on stm32mp231 Raphael Gallais-Pou
` (6 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: Raphael Gallais-Pou @ 2026-02-10 10:03 UTC (permalink / raw)
To: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Maxime Coquelin,
Alexandre Torgue, Christophe Roullier
Cc: Philippe Cornu, Yannick Fertre, Raphaël Gallais-Pou,
devicetree, linux-stm32, linux-arm-kernel, linux-kernel
The LVDS is used on STM32MP2 as a display interface.
Add the LVDS node.
Signed-off-by: Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com>
---
arch/arm64/boot/dts/st/stm32mp235.dtsi | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/arch/arm64/boot/dts/st/stm32mp235.dtsi b/arch/arm64/boot/dts/st/stm32mp235.dtsi
index ae98f503529f0a2473f250b4d9195820135ee1bc..7a87c344a4fe3c5c6af154721d4229eb330d4cb8 100644
--- a/arch/arm64/boot/dts/st/stm32mp235.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp235.dtsi
@@ -12,6 +12,18 @@ <dc {
};
&rifsc {
+ lvds: lvds@48060000 {
+ compatible = "st,stm32mp255-lvds", "st,stm32mp25-lvds";
+ reg = <0x48060000 0x2000>;
+ #clock-cells = <0>;
+ clocks = <&rcc CK_BUS_LVDS>, <&rcc CK_KER_LVDSPHY>;
+ clock-names = "pclk", "ref";
+ resets = <&rcc LVDS_R>;
+ access-controllers = <&rifsc 84>;
+ power-domains = <&cluster_pd>;
+ status = "disabled";
+ };
+
vdec: vdec@480d0000 {
compatible = "st,stm32mp25-vdec";
reg = <0x480d0000 0x3c8>;
--
2.43.0
^ permalink raw reply related [flat|nested] 12+ messages in thread* [PATCH v2 5/9] arm64: dts: st: add clock-cells to syscfg node on stm32mp231
2026-02-10 10:03 [PATCH v2 0/9] Enable display support for STM32MP257F-DK and STM32MP235F-DK Raphael Gallais-Pou
` (3 preceding siblings ...)
2026-02-10 10:03 ` [PATCH v2 4/9] arm64: dts: st: add lvds " Raphael Gallais-Pou
@ 2026-02-10 10:03 ` Raphael Gallais-Pou
2026-02-10 10:03 ` [PATCH v2 6/9] arm64: dts: st: describe power supplies for stm32mp235f-dk board Raphael Gallais-Pou
` (5 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: Raphael Gallais-Pou @ 2026-02-10 10:03 UTC (permalink / raw)
To: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Maxime Coquelin,
Alexandre Torgue, Christophe Roullier
Cc: Philippe Cornu, Yannick Fertre, Raphaël Gallais-Pou,
devicetree, linux-stm32, linux-arm-kernel, linux-kernel
Make the syscfg node a clock provider so clock consumers can reach child
clocks through device-tree.
Signed-off-by: Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com>
---
arch/arm64/boot/dts/st/stm32mp231.dtsi | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/boot/dts/st/stm32mp231.dtsi b/arch/arm64/boot/dts/st/stm32mp231.dtsi
index 05055bc523850282a2e2b217b180930b39231189..74df739d8f8cdc82922cad9993486b97c50d9084 100644
--- a/arch/arm64/boot/dts/st/stm32mp231.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp231.dtsi
@@ -961,6 +961,7 @@ exti1: interrupt-controller@44220000 {
syscfg: syscon@44230000 {
compatible = "st,stm32mp23-syscfg", "syscon";
reg = <0x44230000 0x10000>;
+ #clock-cells = <0>;
};
pinctrl: pinctrl@44240000 {
--
2.43.0
^ permalink raw reply related [flat|nested] 12+ messages in thread* [PATCH v2 6/9] arm64: dts: st: describe power supplies for stm32mp235f-dk board
2026-02-10 10:03 [PATCH v2 0/9] Enable display support for STM32MP257F-DK and STM32MP235F-DK Raphael Gallais-Pou
` (4 preceding siblings ...)
2026-02-10 10:03 ` [PATCH v2 5/9] arm64: dts: st: add clock-cells to syscfg node on stm32mp231 Raphael Gallais-Pou
@ 2026-02-10 10:03 ` Raphael Gallais-Pou
2026-02-10 10:04 ` [PATCH v2 7/9] arm64: dts: st: enable display support on " Raphael Gallais-Pou
` (4 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: Raphael Gallais-Pou @ 2026-02-10 10:03 UTC (permalink / raw)
To: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Maxime Coquelin,
Alexandre Torgue, Christophe Roullier
Cc: Philippe Cornu, Yannick Fertre, Raphaël Gallais-Pou,
devicetree, linux-stm32, linux-arm-kernel, linux-kernel
Describe power supplies for stm32mp235f-dk board.
Signed-off-by: Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com>
---
arch/arm64/boot/dts/st/stm32mp235f-dk.dts | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/arch/arm64/boot/dts/st/stm32mp235f-dk.dts b/arch/arm64/boot/dts/st/stm32mp235f-dk.dts
index c3e68806822365ab9ec7ccee2eba73a117a8c331..0c7874885381da73b9274078f3efb9f0b042504f 100644
--- a/arch/arm64/boot/dts/st/stm32mp235f-dk.dts
+++ b/arch/arm64/boot/dts/st/stm32mp235f-dk.dts
@@ -105,6 +105,34 @@ scmi_vddio1: regulator@0 {
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3300000>;
};
+ scmi_vddcore: regulator@11 {
+ reg = <VOLTD_SCMI_STPMIC2_BUCK2>;
+ regulator-name = "vddcore";
+ };
+ scmi_v1v8: regulator@14 {
+ reg = <VOLTD_SCMI_STPMIC2_BUCK5>;
+ regulator-name = "v1v8";
+ };
+ scmi_v3v3: regulator@16 {
+ reg = <VOLTD_SCMI_STPMIC2_BUCK7>;
+ regulator-name = "v3v3";
+ };
+ scmi_vdd_emmc: regulator@18 {
+ reg = <VOLTD_SCMI_STPMIC2_LDO2>;
+ regulator-name = "vdd_emmc";
+ };
+ scmi_vdd3v3_usb: regulator@20 {
+ reg = <VOLTD_SCMI_STPMIC2_LDO4>;
+ regulator-name = "vdd3v3_usb";
+ };
+ scmi_v5v_hdmi: regulator@21 {
+ reg = <VOLTD_SCMI_STPMIC2_LDO5>;
+ regulator-name = "v5v_hdmi";
+ };
+ scmi_v5v_vconn: regulator@22 {
+ reg = <VOLTD_SCMI_STPMIC2_LDO6>;
+ regulator-name = "v5v_vconn";
+ };
scmi_vdd_sdcard: regulator@23 {
reg = <VOLTD_SCMI_STPMIC2_LDO7>;
regulator-name = "vdd_sdcard";
--
2.43.0
^ permalink raw reply related [flat|nested] 12+ messages in thread* [PATCH v2 7/9] arm64: dts: st: enable display support on stm32mp235f-dk board
2026-02-10 10:03 [PATCH v2 0/9] Enable display support for STM32MP257F-DK and STM32MP235F-DK Raphael Gallais-Pou
` (5 preceding siblings ...)
2026-02-10 10:03 ` [PATCH v2 6/9] arm64: dts: st: describe power supplies for stm32mp235f-dk board Raphael Gallais-Pou
@ 2026-02-10 10:04 ` Raphael Gallais-Pou
2026-02-10 10:04 ` [PATCH v2 8/9] arm64: dts: st: describe power supplies for stm32mp257f-dk board Raphael Gallais-Pou
` (3 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: Raphael Gallais-Pou @ 2026-02-10 10:04 UTC (permalink / raw)
To: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Maxime Coquelin,
Alexandre Torgue, Christophe Roullier
Cc: Philippe Cornu, Yannick Fertre, Raphaël Gallais-Pou,
devicetree, linux-stm32, linux-arm-kernel, linux-kernel
Enable the following IPs on stm32mp235f-dk in order to get display:
* LTDC
* LVDS
* WSVGA LVDS panel (1024x600)
* Panel LVDS backlight as GPIO backlight
* ILI2511 i2c touchscreen
Signed-off-by: Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com>
---
arch/arm64/boot/dts/st/stm32mp235f-dk.dts | 89 +++++++++++++++++++++++++++++++
1 file changed, 89 insertions(+)
diff --git a/arch/arm64/boot/dts/st/stm32mp235f-dk.dts b/arch/arm64/boot/dts/st/stm32mp235f-dk.dts
index 0c7874885381da73b9274078f3efb9f0b042504f..3581892f827cfc43c93050110d438628301c5c99 100644
--- a/arch/arm64/boot/dts/st/stm32mp235f-dk.dts
+++ b/arch/arm64/boot/dts/st/stm32mp235f-dk.dts
@@ -60,6 +60,42 @@ memory@80000000 {
reg = <0x0 0x80000000 0x0 0x80000000>;
};
+ panel_lvds: display {
+ compatible = "edt,etml0700z9ndha", "panel-lvds";
+ enable-gpios = <&gpioi 4 GPIO_ACTIVE_HIGH>;
+ backlight = <&panel_lvds_backlight>;
+ power-supply = <&scmi_v3v3>;
+ width-mm = <156>;
+ height-mm = <92>;
+ data-mapping = "vesa-24";
+ status = "okay";
+
+ panel-timing {
+ clock-frequency = <54000000>;
+ hactive = <1024>;
+ vactive = <600>;
+ hfront-porch = <150>;
+ hback-porch = <150>;
+ hsync-len = <21>;
+ vfront-porch = <24>;
+ vback-porch = <24>;
+ vsync-len = <21>;
+ };
+
+ port {
+ lvds_panel_in: endpoint {
+ remote-endpoint = <&lvds_out0>;
+ };
+ };
+ };
+
+ panel_lvds_backlight: backlight {
+ compatible = "gpio-backlight";
+ gpios = <&gpioi 4 GPIO_ACTIVE_HIGH>;
+ default-on;
+ status = "okay";
+ };
+
reserved-memory {
#address-cells = <2>;
#size-cells = <2>;
@@ -100,6 +136,59 @@ phy1_eth1: ethernet-phy@1 {
};
};
+&i2c2 {
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&i2c2_pins_b>;
+ pinctrl-1 = <&i2c2_sleep_pins_b>;
+ i2c-scl-rising-time-ns = <108>;
+ i2c-scl-falling-time-ns = <12>;
+ clock-frequency = <400000>;
+ status = "okay";
+ /* spare dmas for other usage */
+ /delete-property/dmas;
+ /delete-property/dma-names;
+
+ ili2511: ili2511@41 {
+ compatible = "ilitek,ili251x";
+ reg = <0x41>;
+ interrupt-parent = <&gpioi>;
+ interrupts = <6 IRQ_TYPE_EDGE_FALLING>;
+ reset-gpios = <&gpioi 0 GPIO_ACTIVE_LOW>;
+ status = "okay";
+ };
+};
+
+<dc {
+ status = "okay";
+ port {
+ ltdc_ep0_out: endpoint {
+ remote-endpoint = <&lvds_in>;
+ };
+ };
+};
+
+&lvds {
+ status = "okay";
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ lvds_in: endpoint {
+ remote-endpoint = <<dc_ep0_out>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+ lvds_out0: endpoint {
+ remote-endpoint = <&lvds_panel_in>;
+ };
+ };
+ };
+};
+
&scmi_regu {
scmi_vddio1: regulator@0 {
regulator-min-microvolt = <1800000>;
--
2.43.0
^ permalink raw reply related [flat|nested] 12+ messages in thread* [PATCH v2 8/9] arm64: dts: st: describe power supplies for stm32mp257f-dk board
2026-02-10 10:03 [PATCH v2 0/9] Enable display support for STM32MP257F-DK and STM32MP235F-DK Raphael Gallais-Pou
` (6 preceding siblings ...)
2026-02-10 10:04 ` [PATCH v2 7/9] arm64: dts: st: enable display support on " Raphael Gallais-Pou
@ 2026-02-10 10:04 ` Raphael Gallais-Pou
2026-02-10 10:04 ` [PATCH v2 9/9] arm64: dts: st: enable display support on " Raphael Gallais-Pou
` (2 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: Raphael Gallais-Pou @ 2026-02-10 10:04 UTC (permalink / raw)
To: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Maxime Coquelin,
Alexandre Torgue, Christophe Roullier
Cc: Philippe Cornu, Yannick Fertre, Raphaël Gallais-Pou,
devicetree, linux-stm32, linux-arm-kernel, linux-kernel
Describe power supplies for stm32mp257f-dk board.
Signed-off-by: Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com>
---
arch/arm64/boot/dts/st/stm32mp257f-dk.dts | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/arch/arm64/boot/dts/st/stm32mp257f-dk.dts b/arch/arm64/boot/dts/st/stm32mp257f-dk.dts
index e718d888ce21b6f124331543c09c1e66e6304964..4e45562ceb3dabb19eca3340337b364f63508215 100644
--- a/arch/arm64/boot/dts/st/stm32mp257f-dk.dts
+++ b/arch/arm64/boot/dts/st/stm32mp257f-dk.dts
@@ -105,6 +105,34 @@ scmi_vddio1: regulator@0 {
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3300000>;
};
+ scmi_vddcore: regulator@11 {
+ reg = <VOLTD_SCMI_STPMIC2_BUCK2>;
+ regulator-name = "vddcore";
+ };
+ scmi_v1v8: regulator@14 {
+ reg = <VOLTD_SCMI_STPMIC2_BUCK5>;
+ regulator-name = "v1v8";
+ };
+ scmi_v3v3: regulator@16 {
+ reg = <VOLTD_SCMI_STPMIC2_BUCK7>;
+ regulator-name = "v3v3";
+ };
+ scmi_vdd_emmc: regulator@18 {
+ reg = <VOLTD_SCMI_STPMIC2_LDO2>;
+ regulator-name = "vdd_emmc";
+ };
+ scmi_vdd3v3_usb: regulator@20 {
+ reg = <VOLTD_SCMI_STPMIC2_LDO4>;
+ regulator-name = "vdd3v3_usb";
+ };
+ scmi_v5v_hdmi: regulator@21 {
+ reg = <VOLTD_SCMI_STPMIC2_LDO5>;
+ regulator-name = "v5v_hdmi";
+ };
+ scmi_v5v_vconn: regulator@22 {
+ reg = <VOLTD_SCMI_STPMIC2_LDO6>;
+ regulator-name = "v5v_vconn";
+ };
scmi_vdd_sdcard: regulator@23 {
reg = <VOLTD_SCMI_STPMIC2_LDO7>;
regulator-name = "vdd_sdcard";
--
2.43.0
^ permalink raw reply related [flat|nested] 12+ messages in thread* [PATCH v2 9/9] arm64: dts: st: enable display support on stm32mp257f-dk board
2026-02-10 10:03 [PATCH v2 0/9] Enable display support for STM32MP257F-DK and STM32MP235F-DK Raphael Gallais-Pou
` (7 preceding siblings ...)
2026-02-10 10:04 ` [PATCH v2 8/9] arm64: dts: st: describe power supplies for stm32mp257f-dk board Raphael Gallais-Pou
@ 2026-02-10 10:04 ` Raphael Gallais-Pou
2026-03-05 13:06 ` [Linux-stm32] [PATCH v2 0/9] Enable display support for STM32MP257F-DK and STM32MP235F-DK Raphael Gallais-Pou
2026-03-25 14:45 ` Alexandre TORGUE
10 siblings, 0 replies; 12+ messages in thread
From: Raphael Gallais-Pou @ 2026-02-10 10:04 UTC (permalink / raw)
To: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Maxime Coquelin,
Alexandre Torgue, Christophe Roullier
Cc: Philippe Cornu, Yannick Fertre, Raphaël Gallais-Pou,
devicetree, linux-stm32, linux-arm-kernel, linux-kernel
Enable the following IPs on stm32mp257f-dk in order to get display:
* LTDC
* LVDS
* WSVGA LVDS panel (1024x600)
* Panel LVDS backlight as GPIO backlight
* ILI2511 i2c touchscreen
Signed-off-by: Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com>
---
arch/arm64/boot/dts/st/stm32mp257f-dk.dts | 90 +++++++++++++++++++++++++++++++
1 file changed, 90 insertions(+)
diff --git a/arch/arm64/boot/dts/st/stm32mp257f-dk.dts b/arch/arm64/boot/dts/st/stm32mp257f-dk.dts
index 4e45562ceb3dabb19eca3340337b364f63508215..b60c13614cfb9207b8b541ee8bde4ae9aab937a8 100644
--- a/arch/arm64/boot/dts/st/stm32mp257f-dk.dts
+++ b/arch/arm64/boot/dts/st/stm32mp257f-dk.dts
@@ -55,6 +55,43 @@ led-blue {
};
};
+ panel_lvds: display {
+ compatible = "edt,etml0700z9ndha", "panel-lvds";
+ enable-gpios = <&gpioi 4 GPIO_ACTIVE_HIGH>;
+ backlight = <&panel_lvds_backlight>;
+ power-supply = <&scmi_v3v3>;
+ width-mm = <156>;
+ height-mm = <92>;
+ data-mapping = "vesa-24";
+ status = "okay";
+
+ panel-timing {
+ clock-frequency = <54000000>;
+ hactive = <1024>;
+ vactive = <600>;
+ hfront-porch = <150>;
+ hback-porch = <150>;
+ hsync-len = <21>;
+ vfront-porch = <24>;
+ vback-porch = <24>;
+ vsync-len = <21>;
+ };
+
+ port {
+ lvds_panel_in: endpoint {
+ remote-endpoint = <&lvds_out0>;
+ };
+ };
+ };
+
+ panel_lvds_backlight: backlight {
+ compatible = "gpio-backlight";
+ gpios = <&gpioi 4 GPIO_ACTIVE_HIGH>;
+ default-on;
+ status = "okay";
+ };
+
+
memory@80000000 {
device_type = "memory";
reg = <0x0 0x80000000 0x1 0x0>;
@@ -100,6 +137,59 @@ phy1_eth1: ethernet-phy@1 {
};
};
+&i2c2 {
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&i2c2_pins_b>;
+ pinctrl-1 = <&i2c2_sleep_pins_b>;
+ i2c-scl-rising-time-ns = <108>;
+ i2c-scl-falling-time-ns = <12>;
+ clock-frequency = <400000>;
+ status = "okay";
+ /* spare dmas for other usage */
+ /delete-property/dmas;
+ /delete-property/dma-names;
+
+ ili2511: ili2511@41 {
+ compatible = "ilitek,ili251x";
+ reg = <0x41>;
+ interrupt-parent = <&gpioi>;
+ interrupts = <6 IRQ_TYPE_EDGE_FALLING>;
+ reset-gpios = <&gpioi 0 GPIO_ACTIVE_LOW>;
+ status = "okay";
+ };
+};
+
+<dc {
+ status = "okay";
+ port {
+ ltdc_ep0_out: endpoint {
+ remote-endpoint = <&lvds_in>;
+ };
+ };
+};
+
+&lvds {
+ status = "okay";
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ lvds_in: endpoint {
+ remote-endpoint = <<dc_ep0_out>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+ lvds_out0: endpoint {
+ remote-endpoint = <&lvds_panel_in>;
+ };
+ };
+ };
+};
+
&scmi_regu {
scmi_vddio1: regulator@0 {
regulator-min-microvolt = <1800000>;
--
2.43.0
^ permalink raw reply related [flat|nested] 12+ messages in thread* Re: [Linux-stm32] [PATCH v2 0/9] Enable display support for STM32MP257F-DK and STM32MP235F-DK
2026-02-10 10:03 [PATCH v2 0/9] Enable display support for STM32MP257F-DK and STM32MP235F-DK Raphael Gallais-Pou
` (8 preceding siblings ...)
2026-02-10 10:04 ` [PATCH v2 9/9] arm64: dts: st: enable display support on " Raphael Gallais-Pou
@ 2026-03-05 13:06 ` Raphael Gallais-Pou
2026-03-25 14:45 ` Alexandre TORGUE
10 siblings, 0 replies; 12+ messages in thread
From: Raphael Gallais-Pou @ 2026-03-05 13:06 UTC (permalink / raw)
To: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Maxime Coquelin,
Alexandre Torgue, Christophe Roullier
Cc: devicetree, Yannick Fertre, linux-kernel,
Raphaël Gallais-Pou, linux-stm32, linux-arm-kernel
On 2/10/26 11:03, Raphael Gallais-Pou wrote:
> This series aims to add and enable sufficient LVDS display support for
> STM32MP257F-DK and STM32MP235F-DK boards.
>
> Signed-off-by: Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com>
> ---
Hi,
Gentle ping regarding this series. I have not received any feedbacks from it in
a month.
Thanks for your time,
Best regards,
Raphaël
> Changes in v2:
> - Added support for STM32MP235F-DK. A second series would have dependant
> to the v1 of this series due to the pinctrl. Better send it though
> one push to reduce dependencies.
> - Link to v1:
> https://lore.kernel.org/r/20260205-master-v1-0-fe6399aa3aab@foss.st.com/
>
> ---
> Raphael Gallais-Pou (9):
> arm64: dts: st: add i2c2 pins for stm32mp25
> arm64: dts: st: add ltdc support on stm32mp231
> arm64: dts: st: add ltdc support on stm32mp235
> arm64: dts: st: add lvds support on stm32mp235
> arm64: dts: st: add clock-cells to syscfg node on stm32mp231
> arm64: dts: st: describe power supplies for stm32mp235f-dk board
> arm64: dts: st: enable display support on stm32mp235f-dk board
> arm64: dts: st: describe power supplies for stm32mp257f-dk board
> arm64: dts: st: enable display support on stm32mp257f-dk board
>
> arch/arm64/boot/dts/st/stm32mp231.dtsi | 19 +++++
> arch/arm64/boot/dts/st/stm32mp235.dtsi | 18 ++++
> arch/arm64/boot/dts/st/stm32mp235f-dk.dts | 117 +++++++++++++++++++++++++
> arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi | 17 ++++
> arch/arm64/boot/dts/st/stm32mp257f-dk.dts | 118 ++++++++++++++++++++++++++
> 5 files changed, 289 insertions(+)
> ---
> base-commit: 05f7e89ab9731565d8a62e3b5d1ec206485eeb0b
> change-id: 20260209-display-516c2cedc734
>
> Best regards,
^ permalink raw reply [flat|nested] 12+ messages in thread* Re: [PATCH v2 0/9] Enable display support for STM32MP257F-DK and STM32MP235F-DK
2026-02-10 10:03 [PATCH v2 0/9] Enable display support for STM32MP257F-DK and STM32MP235F-DK Raphael Gallais-Pou
` (9 preceding siblings ...)
2026-03-05 13:06 ` [Linux-stm32] [PATCH v2 0/9] Enable display support for STM32MP257F-DK and STM32MP235F-DK Raphael Gallais-Pou
@ 2026-03-25 14:45 ` Alexandre TORGUE
10 siblings, 0 replies; 12+ messages in thread
From: Alexandre TORGUE @ 2026-03-25 14:45 UTC (permalink / raw)
To: Raphael Gallais-Pou, Rob Herring, Krzysztof Kozlowski,
Conor Dooley, Maxime Coquelin, Christophe Roullier
Cc: Philippe Cornu, Yannick Fertre, Raphaël Gallais-Pou,
devicetree, linux-stm32, linux-arm-kernel, linux-kernel
Hello Raph
On 2/10/26 11:03, Raphael Gallais-Pou wrote:
> This series aims to add and enable sufficient LVDS display support for
> STM32MP257F-DK and STM32MP235F-DK boards.
>
> Signed-off-by: Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com>
> ---
> Changes in v2:
> - Added support for STM32MP235F-DK. A second series would have dependant
> to the v1 of this series due to the pinctrl. Better send it though
> one push to reduce dependencies.
> - Link to v1:
> https://lore.kernel.org/r/20260205-master-v1-0-fe6399aa3aab@foss.st.com/
>
> ---
> Raphael Gallais-Pou (9):
> arm64: dts: st: add i2c2 pins for stm32mp25
> arm64: dts: st: add ltdc support on stm32mp231
> arm64: dts: st: add ltdc support on stm32mp235
> arm64: dts: st: add lvds support on stm32mp235
> arm64: dts: st: add clock-cells to syscfg node on stm32mp231
> arm64: dts: st: describe power supplies for stm32mp235f-dk board
> arm64: dts: st: enable display support on stm32mp235f-dk board
> arm64: dts: st: describe power supplies for stm32mp257f-dk board
> arm64: dts: st: enable display support on stm32mp257f-dk board
>
> arch/arm64/boot/dts/st/stm32mp231.dtsi | 19 +++++
> arch/arm64/boot/dts/st/stm32mp235.dtsi | 18 ++++
> arch/arm64/boot/dts/st/stm32mp235f-dk.dts | 117 +++++++++++++++++++++++++
> arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi | 17 ++++
> arch/arm64/boot/dts/st/stm32mp257f-dk.dts | 118 ++++++++++++++++++++++++++
> 5 files changed, 289 insertions(+)
> ---
> base-commit: 05f7e89ab9731565d8a62e3b5d1ec206485eeb0b
> change-id: 20260209-display-516c2cedc734
>
> Best regards,
Series applied on stm32-next.
Thanks
Alex
^ permalink raw reply [flat|nested] 12+ messages in thread