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ARM: dts: stm32: Add 1 GiB DRAM settings for DH STM32MP13xx DHCOR SoM

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Add DRAM settings for 1 GiB variant of DH STM32MP13xx DHCOR SoM
and support for SoM DRAM coding HW straps decoding and automatic
DRAM configuration selection. Enable CONFIG_BOARD_EARLY_INIT_F on
all STM32MP1 DHSOM, as it is required for the HW straps decoding.

Signed-off-by: Marek Vasut <marek.vasut@mailbox.org>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
This commit is contained in:
Marek Vasut
2025-11-19 00:19:36 +01:00
committed by Patrice Chotard
parent fd26267b4c
commit 86ff2cfa80
5 changed files with 123 additions and 10 deletions
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30
board/dhelectronics/dh_stm32mp1/board.c
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@@ -304,17 +304,29 @@ static void board_get_coding_straps(void)
int board_stm32mp1_ddr_config_name_match(struct udevice *dev,
const char *name)
{
if (ddr3code == 1 &&
!strcmp(name, "st,ddr3l-dhsom-1066-888-bin-g-2x1gb-533mhz"))
return 0;
if (IS_ENABLED(CONFIG_TARGET_DH_STM32MP13X)) {
if (ddr3code == 1 &&
!strcmp(name, "st,ddr3l-dhsom-1066-888-bin-g-1x2gb-533mhz"))
return 0;
if (ddr3code == 2 &&
!strcmp(name, "st,ddr3l-dhsom-1066-888-bin-g-2x2gb-533mhz"))
return 0;
if (ddr3code == 2 &&
!strcmp(name, "st,ddr3l-dhsom-1066-888-bin-g-1x4gb-533mhz"))
return 0;
}
if (ddr3code == 3 &&
!strcmp(name, "st,ddr3l-dhsom-1066-888-bin-g-2x4gb-533mhz"))
return 0;
if (IS_ENABLED(CONFIG_TARGET_DH_STM32MP15X)) {
if (ddr3code == 1 &&
!strcmp(name, "st,ddr3l-dhsom-1066-888-bin-g-2x1gb-533mhz"))
return 0;
if (ddr3code == 2 &&
!strcmp(name, "st,ddr3l-dhsom-1066-888-bin-g-2x2gb-533mhz"))
return 0;
if (ddr3code == 3 &&
!strcmp(name, "st,ddr3l-dhsom-1066-888-bin-g-2x4gb-533mhz"))
return 0;
}
return -EINVAL;
}