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boards: arm: stm32h750b_dk: add support for sdram

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128 Mbit sdram devicetree definition

Signed-off-by: Toon Stegen <toon@toostsolutions.be>
This commit is contained in:
Toon Stegen 2024-01-03 15:51:13 +01:00 committed by Anas Nashif
parent 33c84d8af0
commit 1d23ac5577
1 changed files with 44 additions and 0 deletions
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44
boards/arm/stm32h750b_dk/stm32h750b_dk.dts
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@ -21,6 +21,14 @@
zephyr,flash-controller = &mt25ql512ab1;
};
sdram2: sdram@d0000000 {
compatible = "zephyr,memory-region", "mmio-sram";
device_type = "memory";
reg = <0xd0000000 DT_SIZE_M(16)>; /* 128Mbit */
zephyr,memory-region = "SDRAM2";
zephyr,memory-attr = <( DT_MEM_ARM(ATTR_MPU_RAM) )>;
};
leds {
compatible = "gpio-leds";
red_led: led_1 {
@ -121,3 +129,39 @@
status = "okay";
};
};
&fmc {
pinctrl-0 = <&fmc_nbl0_pe0 &fmc_nbl1_pe1
&fmc_sdclk_pg8 &fmc_sdnwe_ph5 &fmc_sdcke1_ph7
&fmc_sdne1_ph6 &fmc_sdnras_pf11 &fmc_sdncas_pg15
&fmc_a0_pf0 &fmc_a1_pf1 &fmc_a2_pf2 &fmc_a3_pf3 &fmc_a4_pf4
&fmc_a5_pf5 &fmc_a6_pf12 &fmc_a7_pf13 &fmc_a8_pf14
&fmc_a9_pf15 &fmc_a10_pg0 &fmc_a11_pg1
&fmc_a14_pg4 &fmc_a15_pg5 &fmc_d0_pd14 &fmc_d1_pd15
&fmc_d2_pd0 &fmc_d3_pd1 &fmc_d4_pe7 &fmc_d5_pe8 &fmc_d6_pe9
&fmc_d7_pe10 &fmc_d8_pe11 &fmc_d9_pe12 &fmc_d10_pe13
&fmc_d11_pe14 &fmc_d12_pe15 &fmc_d13_pd8 &fmc_d14_pd9
&fmc_d15_pd10>;
pinctrl-names = "default";
status = "okay";
sdram {
status = "okay";
power-up-delay = <100>;
num-auto-refresh = <8>;
mode-register = <0x220>;
refresh-rate = <0x603>;
bank@1 {
reg = <1>;
st,sdram-control = <STM32_FMC_SDRAM_NC_8
STM32_FMC_SDRAM_NR_12
STM32_FMC_SDRAM_MWID_16
STM32_FMC_SDRAM_NB_4
STM32_FMC_SDRAM_CAS_3
STM32_FMC_SDRAM_SDCLK_PERIOD_2
STM32_FMC_SDRAM_RBURST_ENABLE
STM32_FMC_SDRAM_RPIPE_0>;
st,sdram-timing = <2 7 4 7 2 2 2>;
};
};
};