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boards: arm: stm32f746g_disco: add support for LTDC

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Add LTDC config and pinctrl in board DTS
Modify defconfig so KSCAN and MEMC drivers are enabled if
display is enabled
Update board doc and yaml

Signed-off-by: Tomislav Milkovic <tomislav.milkovic95@gmail.com>
This commit is contained in:
Tomislav Milkovic 2022-05-10 14:27:42 +02:00 • committed by Carles Cufí
commit ba90be0681
4 changed files with 59 additions and 2 deletions
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19
boards/arm/stm32f746g_disco/Kconfig.defconfig
View file

@ -15,14 +15,29 @@ config NET_L2_ETHERNET
endif # NETWORKING
config I2C
default y if KSCAN
if DISPLAY
config KSCAN
default y
# MEMC needs to be enabled in order to store
# display buffer to external SDRAM connected to FMC
config MEMC
default y
endif # DISPLAY
if KSCAN
config I2C
default y
config KSCAN_FT5336
default y
config KSCAN_FT5336_INTERRUPT
default y
endif # KSCAN
config DISK_DRIVER_SDMMC

9
boards/arm/stm32f746g_disco/doc/index.rst
View file

@ -118,6 +118,8 @@ The Zephyr stm32f746g_disco board configuration supports the following hardware
+-----------+------------+-------------------------------------+
| FMC | on-chip | memc (SDRAM) |
+-----------+------------+-------------------------------------+
| LTDC | on-chip | display |
+-----------+------------+-------------------------------------+
Other hardware features are not yet supported on Zephyr porting.
@ -158,6 +160,13 @@ configured as follows
- NBL0/NBL1 : PE0/PE1
- SDCLK/SDNWE/SDCKE0/SDNE0 : PG8/PH5/PC3/PH3
- LTDC :
- R0-R7 : PI15/PJ0/PJ1/PJ2/PJ3/PJ4/PJ5/PJ6
- G0-G7 : PJ7/PJ8/PJ9/PJ10/PJ11/PK0/PK1/PK2
- B0-B7 : PJ12/PK13/PJ14/PJ15/PK3/PK4/PK5/PK6
- DE/CLK/HSYNC/VSYNC : PK7/PI14/PI12/PI13
System Clock
============

32
boards/arm/stm32f746g_disco/stm32f746g_disco.dts
View file

@ -20,6 +20,7 @@
zephyr,flash = &flash0;
zephyr,dtcm = &dtcm;
zephyr,flash-controller = &n25q128a1;
zephyr,display = &ltdc;
};
leds {
@ -233,3 +234,34 @@ zephyr_udc0: &usbotg_fs {
};
};
};
&ltdc {
pinctrl-0 = <&ltdc_r0_pi15 &ltdc_r1_pj0 &ltdc_r2_pj1 &ltdc_r3_pj2
&ltdc_r4_pj3 &ltdc_r5_pj4 &ltdc_r6_pj5 &ltdc_r7_pj6
&ltdc_g0_pj7 &ltdc_g1_pj8 &ltdc_g2_pj9 &ltdc_g3_pj10
&ltdc_g4_pj11 &ltdc_g5_pk0 &ltdc_g6_pk1 &ltdc_g7_pk2
&ltdc_b0_pe4 &ltdc_b1_pj13 &ltdc_b2_pj14 &ltdc_b3_pj15
&ltdc_b4_pg12 &ltdc_b5_pk4 &ltdc_b6_pk5 &ltdc_b7_pk6
&ltdc_de_pk7 &ltdc_clk_pi14 &ltdc_hsync_pi10 &ltdc_vsync_pi9>;
pinctrl-names = "default";
disp-on-gpios = <&gpioi 12 GPIO_ACTIVE_HIGH>;
bl-ctrl-gpios = <&gpiok 3 GPIO_ACTIVE_HIGH>;
ext-sdram = <&sdram1>;
status = "okay";
width = <480>;
height = <272>;
hsync-pol = <STM32_LTDC_HSPOL_ACTIVE_LOW>;
vsync-pol = <STM32_LTDC_VSPOL_ACTIVE_LOW>;
de-pol = <STM32_LTDC_DEPOL_ACTIVE_LOW>;
pclk-pol = <STM32_LTDC_PCPOL_ACTIVE_LOW>;
hsync-duration = <1>;
vsync-duration = <10>;
hbp-duration = <43>;
vbp-duration = <12>;
hfp-duration = <8>;
vfp-duration = <4>;
def-back-color-red = <0xFF>;
def-back-color-green = <0xFF>;
def-back-color-blue = <0xFF>;
};

1
boards/arm/stm32f746g_disco/stm32f746g_disco.yaml
View file

@ -19,4 +19,5 @@ supported:
- sdhc
- usb_device
- kscan:touch
- display
- memc