The series adds support for the display on the stm32f746-disco board.
Changes in v7:
- Add 'Reviewed-by' tags I forgot in v6.
https://lore.kernel.org/linux-arm-kernel/[email protected]/T/
Changes in v6:
- Remove dma nodes from stm32f746-disco.dts, they are not used by LTDC,
so there is no need to enable them.
Changes in v5:
I am confident that framebuffer sizing is a real requirement for STM32 boards,
but I need some time to understand if and how to introduce this functionality.
Therefore, I drop the following patches to allow the series to be fully merged:
- [4/6] dt-bindings: display: stm32-ltdc: add optional st,fb-bpp property
- [5/6] ARM: dts: stm32: set framebuffer bit depth on stm32f746-disco
- [6/6] drm/stm: set framebuffer bit depth through DTS property
Changes in v4:
- Use DTS property instead of module parameter to set the framebuffer bit depth.
Changes in v3:
- rename ltdc-pins-a-0 to ltdc-0.
- drop [4/6] dt-bindings: display: simple: add Rocktech RK043FN48H
Applied to https://anongit.freedesktop.org/git/drm/drm-misc.git (drm-misc-next):
https://cgit.freedesktop.org/drm/drm-misc/commit/?id=c42a37a27c777d63961dd634a30f7c887949491a
- drop [5/6] drm/panel: simple: add support for Rocktech RK043FN48H panel
Applied to https://anongit.freedesktop.org/git/drm/drm-misc.git (drm-misc-next)
https://cgit.freedesktop.org/drm/drm-misc/commit/?id=13cdd12a9f934158f4ec817cf048fcb4384aa9dc
Dario Binacchi (3):
ARM: dts: stm32: add ltdc support on stm32f746 MCU
ARM: dts: stm32: add pin map for LTDC on stm32f7
ARM: dts: stm32: support display on stm32f746-disco board
arch/arm/boot/dts/st/stm32f7-pinctrl.dtsi | 35 ++++++++++++++++++
arch/arm/boot/dts/st/stm32f746-disco.dts | 43 +++++++++++++++++++++++
arch/arm/boot/dts/st/stm32f746.dtsi | 10 ++++++
3 files changed, 88 insertions(+)
--
2.34.1
Add LTDC (Lcd-tft Display Controller) support.
Signed-off-by: Dario Binacchi <[email protected]>
Reviewed-by: Raphaël Gallais-Pou <[email protected]>
---
Changes in v7:
- Add 'Reviewed-by' tag I forgot in v6.
https://lore.kernel.org/linux-arm-kernel/[email protected]/T/
arch/arm/boot/dts/st/stm32f746.dtsi | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/arch/arm/boot/dts/st/stm32f746.dtsi b/arch/arm/boot/dts/st/stm32f746.dtsi
index d1802efd067c..36eda1562e83 100644
--- a/arch/arm/boot/dts/st/stm32f746.dtsi
+++ b/arch/arm/boot/dts/st/stm32f746.dtsi
@@ -507,6 +507,16 @@ pwm {
};
};
+ ltdc: display-controller@40016800 {
+ compatible = "st,stm32-ltdc";
+ reg = <0x40016800 0x200>;
+ interrupts = <88>, <89>;
+ resets = <&rcc STM32F7_APB2_RESET(LTDC)>;
+ clocks = <&rcc 1 CLK_LCD>;
+ clock-names = "lcd";
+ status = "disabled";
+ };
+
pwrcfg: power-config@40007000 {
compatible = "st,stm32-power-config", "syscon";
reg = <0x40007000 0x400>;
--
2.34.1
Add support to Rocktech RK043FN48H display on stm32f746-disco board.
Signed-off-by: Dario Binacchi <[email protected]>
Reviewed-by: Raphaël Gallais-Pou <[email protected]>
---
Changes in v7:
- Add 'Reviewed-by' tag I forgot in v6.
https://lore.kernel.org/linux-arm-kernel/[email protected]/T/
Changes in v6:
- Remove dma nodes from stm32f746-disco.dts, they are not used by LTDC,
so there is no need to enable them.
Changes in v5:
I am confident that framebuffer sizing is a real requirement for STM32 boards,
but I need some time to understand if and how to introduce this functionality.
Therefore, I drop the following patches to allow the series to be fully merged:
- [4/6] dt-bindings: display: stm32-ltdc: add optional st,fb-bpp property
- [5/6] ARM: dts: stm32: set framebuffer bit depth on stm32f746-disco
- [6/6] drm/stm: set framebuffer bit depth through DTS property
Changes in v4:
- Use DTS property instead of module parameter to set the framebuffer bit depth.
Changes in v3:
- drop [4/6] dt-bindings: display: simple: add Rocktech RK043FN48H
Applied to https://anongit.freedesktop.org/git/drm/drm-misc.git (drm-misc-next):
https://cgit.freedesktop.org/drm/drm-misc/commit/?id=c42a37a27c777d63961dd634a30f7c887949491a
- drop [5/6] drm/panel: simple: add support for Rocktech RK043FN48H panel
Applied to https://anongit.freedesktop.org/git/drm/drm-misc.git (drm-misc-next)
https://cgit.freedesktop.org/drm/drm-misc/commit/?id=13cdd12a9f934158f4ec817cf048fcb4384aa9dc
arch/arm/boot/dts/st/stm32f746-disco.dts | 43 ++++++++++++++++++++++++
1 file changed, 43 insertions(+)
diff --git a/arch/arm/boot/dts/st/stm32f746-disco.dts b/arch/arm/boot/dts/st/stm32f746-disco.dts
index c11616ed5fc6..c00d34179e2e 100644
--- a/arch/arm/boot/dts/st/stm32f746-disco.dts
+++ b/arch/arm/boot/dts/st/stm32f746-disco.dts
@@ -60,10 +60,41 @@ memory@c0000000 {
reg = <0xC0000000 0x800000>;
};
+ reserved-memory {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ linux,cma {
+ compatible = "shared-dma-pool";
+ no-map;
+ size = <0x80000>;
+ linux,dma-default;
+ };
+ };
+
aliases {
serial0 = &usart1;
};
+ backlight: backlight {
+ compatible = "gpio-backlight";
+ gpios = <&gpiok 3 GPIO_ACTIVE_HIGH>;
+ status = "okay";
+ };
+
+ panel_rgb: panel-rgb {
+ compatible = "rocktech,rk043fn48h";
+ backlight = <&backlight>;
+ enable-gpios = <&gpioi 12 GPIO_ACTIVE_HIGH>;
+ status = "okay";
+ port {
+ panel_in_rgb: endpoint {
+ remote-endpoint = <<dc_out_rgb>;
+ };
+ };
+ };
+
usbotg_hs_phy: usb-phy {
#phy-cells = <0>;
compatible = "usb-nop-xceiv";
@@ -99,6 +130,18 @@ &i2c1 {
status = "okay";
};
+<dc {
+ pinctrl-0 = <<dc_pins_a>;
+ pinctrl-names = "default";
+ status = "okay";
+
+ port {
+ ltdc_out_rgb: endpoint {
+ remote-endpoint = <&panel_in_rgb>;
+ };
+ };
+};
+
&sdio1 {
status = "okay";
vmmc-supply = <&mmc_vcard>;
--
2.34.1
Add pin configurations for using LTDC (LCD-tft Display Controller) on
stm32f746-disco board.
Signed-off-by: Dario Binacchi <[email protected]>
Reviewed-by: Raphaël Gallais-Pou <[email protected]>
---
Changes in v7:
- Add 'Reviewed-by' tag I forgot in v6.
https://lore.kernel.org/linux-arm-kernel/[email protected]/T/
Changes in v3:
- rename ltdc-pins-a-0 to ltdc-0.
arch/arm/boot/dts/st/stm32f7-pinctrl.dtsi | 35 +++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/arch/arm/boot/dts/st/stm32f7-pinctrl.dtsi b/arch/arm/boot/dts/st/stm32f7-pinctrl.dtsi
index 9f65403295ca..36dad40dd0c7 100644
--- a/arch/arm/boot/dts/st/stm32f7-pinctrl.dtsi
+++ b/arch/arm/boot/dts/st/stm32f7-pinctrl.dtsi
@@ -365,6 +365,41 @@ pins2 {
bias-pull-up;
};
};
+
+
+ ltdc_pins_a: ltdc-0 {
+ pins {
+ pinmux = <STM32_PINMUX('E', 4, AF14)>, /* LCD_B0 */
+ <STM32_PINMUX('G',12, AF9)>, /* LCD_B4 */
+ <STM32_PINMUX('I', 9, AF14)>, /* LCD_VSYNC */
+ <STM32_PINMUX('I',10, AF14)>, /* LCD_HSYNC */
+ <STM32_PINMUX('I',14, AF14)>, /* LCD_CLK */
+ <STM32_PINMUX('I',15, AF14)>, /* LCD_R0 */
+ <STM32_PINMUX('J', 0, AF14)>, /* LCD_R1 */
+ <STM32_PINMUX('J', 1, AF14)>, /* LCD_R2 */
+ <STM32_PINMUX('J', 2, AF14)>, /* LCD_R3 */
+ <STM32_PINMUX('J', 3, AF14)>, /* LCD_R4 */
+ <STM32_PINMUX('J', 4, AF14)>, /* LCD_R5 */
+ <STM32_PINMUX('J', 5, AF14)>, /* LCD_R6 */
+ <STM32_PINMUX('J', 6, AF14)>, /* LCD_R7 */
+ <STM32_PINMUX('J', 7, AF14)>, /* LCD_G0 */
+ <STM32_PINMUX('J', 8, AF14)>, /* LCD_G1 */
+ <STM32_PINMUX('J', 9, AF14)>, /* LCD_G2 */
+ <STM32_PINMUX('J',10, AF14)>, /* LCD_G3 */
+ <STM32_PINMUX('J',11, AF14)>, /* LCD_G4 */
+ <STM32_PINMUX('J',13, AF14)>, /* LCD_B1 */
+ <STM32_PINMUX('J',14, AF14)>, /* LCD_B2 */
+ <STM32_PINMUX('J',15, AF14)>, /* LCD_B3 */
+ <STM32_PINMUX('K', 0, AF14)>, /* LCD_G5 */
+ <STM32_PINMUX('K', 1, AF14)>, /* LCD_G6 */
+ <STM32_PINMUX('K', 2, AF14)>, /* LCD_G7 */
+ <STM32_PINMUX('K', 4, AF14)>, /* LCD_B5 */
+ <STM32_PINMUX('K', 5, AF14)>, /* LCD_B6 */
+ <STM32_PINMUX('K', 6, AF14)>, /* LCD_B7 */
+ <STM32_PINMUX('K', 7, AF14)>; /* LCD_DE */
+ slew-rate = <2>;
+ };
+ };
};
};
};
--
2.34.1
Hi Dario
Sorry for my late answer.
On 8/5/23 11:32, Dario Binacchi wrote:
> Add support to Rocktech RK043FN48H display on stm32f746-disco board.
>
> Signed-off-by: Dario Binacchi <[email protected]>
> Reviewed-by: Raphaël Gallais-Pou <[email protected]>
>
> ---
>
> Changes in v7:
> - Add 'Reviewed-by' tag I forgot in v6.
> https://lore.kernel.org/linux-arm-kernel/[email protected]/T/
>
> Changes in v6:
> - Remove dma nodes from stm32f746-disco.dts, they are not used by LTDC,
> so there is no need to enable them.
>
> Changes in v5:
> I am confident that framebuffer sizing is a real requirement for STM32 boards,
> but I need some time to understand if and how to introduce this functionality.
> Therefore, I drop the following patches to allow the series to be fully merged:
> - [4/6] dt-bindings: display: stm32-ltdc: add optional st,fb-bpp property
> - [5/6] ARM: dts: stm32: set framebuffer bit depth on stm32f746-disco
> - [6/6] drm/stm: set framebuffer bit depth through DTS property
>
> Changes in v4:
> - Use DTS property instead of module parameter to set the framebuffer bit depth.
>
> Changes in v3:
> - drop [4/6] dt-bindings: display: simple: add Rocktech RK043FN48H
> Applied to https://anongit.freedesktop.org/git/drm/drm-misc.git (drm-misc-next):
> https://cgit.freedesktop.org/drm/drm-misc/commit/?id=c42a37a27c777d63961dd634a30f7c887949491a
> - drop [5/6] drm/panel: simple: add support for Rocktech RK043FN48H panel
> Applied to https://anongit.freedesktop.org/git/drm/drm-misc.git (drm-misc-next)
> https://cgit.freedesktop.org/drm/drm-misc/commit/?id=13cdd12a9f934158f4ec817cf048fcb4384aa9dc
>
> arch/arm/boot/dts/st/stm32f746-disco.dts | 43 ++++++++++++++++++++++++
> 1 file changed, 43 insertions(+)
>
> diff --git a/arch/arm/boot/dts/st/stm32f746-disco.dts b/arch/arm/boot/dts/st/stm32f746-disco.dts
> index c11616ed5fc6..c00d34179e2e 100644
> --- a/arch/arm/boot/dts/st/stm32f746-disco.dts
> +++ b/arch/arm/boot/dts/st/stm32f746-disco.dts
> @@ -60,10 +60,41 @@ memory@c0000000 {
> reg = <0xC0000000 0x800000>;
> };
>
> + reserved-memory {
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges;
> +
> + linux,cma {
> + compatible = "shared-dma-pool";
> + no-map;
> + size = <0x80000>;
> + linux,dma-default;
> + };
> + };
> +
> aliases {
> serial0 = &usart1;
> };
>
> + backlight: backlight {
> + compatible = "gpio-backlight";
> + gpios = <&gpiok 3 GPIO_ACTIVE_HIGH>;
> + status = "okay";
> + };
> +
> + panel_rgb: panel-rgb {
> + compatible = "rocktech,rk043fn48h";
> + backlight = <&backlight>;
> + enable-gpios = <&gpioi 12 GPIO_ACTIVE_HIGH>;
> + status = "okay";
> + port {
> + panel_in_rgb: endpoint {
> + remote-endpoint = <<dc_out_rgb>;
> + };
> + };
> + };
> +
I got this bindings issue:
../arch/arm/boot/dts/st/stm32f746-disco.dtb: panel-rgb: 'power-supply'
is a required property
from schema $id:
http://devicetree.org/schemas/display/panel/panel-simple.yaml#
Do I miss a dt-bindings patch ?
regards
Alex
> usbotg_hs_phy: usb-phy {
> #phy-cells = <0>;
> compatible = "usb-nop-xceiv";
> @@ -99,6 +130,18 @@ &i2c1 {
> status = "okay";
> };
>
> +<dc {
> + pinctrl-0 = <<dc_pins_a>;
> + pinctrl-names = "default";
> + status = "okay";
> +
> + port {
> + ltdc_out_rgb: endpoint {
> + remote-endpoint = <&panel_in_rgb>;
> + };
> + };
> +};
> +
> &sdio1 {
> status = "okay";
> vmmc-supply = <&mmc_vcard>;