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boards: st: stm32h7s78_dk: add support for on-board XSPI PSRAM

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Configure pinctrl for the xspi1 bus, and add definition for the PSRAM chip
on the board.

Signed-off-by: Titouan Christophe <titouan.christophe@mind.be>
This commit is contained in:
Titouan Christophe 2025-04-29 11:24:20 +02:00 • committed by Fabio Baltieri
commit 92a32a903d
3 changed files with 36 additions and 0 deletions
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1
boards/st/stm32h7s78_dk/doc/index.rst
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@ -183,6 +183,7 @@ Default Zephyr Peripheral Mapping:
- LD4 (blue) : PM3 - LD4 (blue) : PM3
- ADC1 channel 6 input : PF12 - ADC1 channel 6 input : PF12
- USB OTG FS DM/DP : PM12/PM11 - USB OTG FS DM/DP : PM12/PM11
- XSPI1 NCS/DQS0/DQS1/CLK/IO: PO0/PO2/PO3/PO4/PP0..15
System Clock System Clock
------------ ------------

34
boards/st/stm32h7s78_dk/stm32h7s78_dk.dts
View file

@ -21,6 +21,13 @@
zephyr,sram = &sram0; zephyr,sram = &sram0;
}; };
psram: memory@90000000 {
compatible = "zephyr,memory-region";
reg = <0x90000000 DT_SIZE_M(32)>;
zephyr,memory-region = "PSRAM";
zephyr,memory-attr = <DT_MEM_ARM_MPU_RAM>;
};
leds { leds {
compatible = "gpio-leds"; compatible = "gpio-leds";
green_led: led_1 { green_led: led_1 {
@ -173,6 +180,33 @@
pinctrl-names = "default"; pinctrl-names = "default";
}; };
&xspi1 {
pinctrl-0 = <&xspim_p1_ncs1_po0 &xspim_p1_dqs0_po2
&xspim_p1_dqs1_po3 &xspim_p1_clk_po4
&xspim_p1_io0_pp0 &xspim_p1_io1_pp1 &xspim_p1_io2_pp2
&xspim_p1_io3_pp3 &xspim_p1_io4_pp4 &xspim_p1_io5_pp5
&xspim_p1_io6_pp6 &xspim_p1_io7_pp7 &xspim_p1_io8_pp8
&xspim_p1_io9_pp9 &xspim_p1_io10_pp10 &xspim_p1_io11_pp11
&xspim_p1_io12_pp12 &xspim_p1_io13_pp13 &xspim_p1_io14_pp14
&xspim_p1_io15_pp15>;
pinctrl-names = "default";
status = "okay";
memc: aps256xxn-obr@0 {
compatible = "st,stm32-xspi-psram";
reg = <0>;
size = <DT_SIZE_M(256)>; /* 256 Mbits */
max-frequency = <DT_FREQ_M(200)>;
fixed-latency;
io-x16-mode;
read-latency = <4>;
write-latency = <1>;
burst-length = <0>;
status = "okay";
};
};
&die_temp { &die_temp {
status = "okay"; status = "okay";
}; };

1
boards/st/stm32h7s78_dk/stm32h7s78_dk.yaml
View file

@ -15,4 +15,5 @@ supported:
- adc - adc
- usb_device - usb_device
- usbd - usbd
- memc
vendor: st vendor: st