| Message ID | 20230607063139.621351-4-dario.binacchi@amarulasolutions.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add display support on the stm32f746-disco board | expand |
On Wed, Jun 7, 2023 at 12:01 PM Dario Binacchi <dario.binacchi@amarulasolutions.com> wrote: > > Add support to Rocktech RK043FN48H display on stm32f746-disco board. > > Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com> > --- > > (no changes since v1) > > arch/arm/boot/dts/stm32f746-disco.dts | 51 +++++++++++++++++++++++++++ > 1 file changed, 51 insertions(+) > > diff --git a/arch/arm/boot/dts/stm32f746-disco.dts b/arch/arm/boot/dts/stm32f746-disco.dts > index c11616ed5fc6..cda423b6a874 100644 > --- a/arch/arm/boot/dts/stm32f746-disco.dts > +++ b/arch/arm/boot/dts/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; > + }; > + }; This looks unrelated to display enablement, isn't it? Jagan.
Hi Jagan, On Wed, Jun 7, 2023 at 8:43 AM Jagan Teki <jagan@amarulasolutions.com> wrote: > > On Wed, Jun 7, 2023 at 12:01 PM Dario Binacchi > <dario.binacchi@amarulasolutions.com> wrote: > > > > Add support to Rocktech RK043FN48H display on stm32f746-disco board. > > > > Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com> > > --- > > > > (no changes since v1) > > > > arch/arm/boot/dts/stm32f746-disco.dts | 51 +++++++++++++++++++++++++++ > > 1 file changed, 51 insertions(+) > > > > diff --git a/arch/arm/boot/dts/stm32f746-disco.dts b/arch/arm/boot/dts/stm32f746-disco.dts > > index c11616ed5fc6..cda423b6a874 100644 > > --- a/arch/arm/boot/dts/stm32f746-disco.dts > > +++ b/arch/arm/boot/dts/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; > > + }; > > + }; > > This looks unrelated to display enablement, isn't it? Without the "reserved-memory" node, it is not possible to allocate memory for the framebuffer. I got this error: stm32-display 40016800.display-controller: [drm] *ERROR* failed to allocate buffer with size 139264 Thanks and regards, Dario > > Jagan. -- Dario Binacchi Senior Embedded Linux Developer dario.binacchi@amarulasolutions.com
diff --git a/arch/arm/boot/dts/stm32f746-disco.dts b/arch/arm/boot/dts/stm32f746-disco.dts index c11616ed5fc6..cda423b6a874 100644 --- a/arch/arm/boot/dts/stm32f746-disco.dts +++ b/arch/arm/boot/dts/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 +130,26 @@ &i2c1 { status = "okay"; }; +&dma1 { + status = "okay"; +}; + +&dma2 { + 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>;
Add support to Rocktech RK043FN48H display on stm32f746-disco board. Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com> --- (no changes since v1) arch/arm/boot/dts/stm32f746-disco.dts | 51 +++++++++++++++++++++++++++ 1 file changed, 51 insertions(+)