Commit 6337d53fdf45 ("arm: dts: sync am33xx with Linux 5.9-rc7") syncs the am335x device tree with the latest linux kernel am335x device tree. That causes problems with device tree in SPL stage. To fix the issues CONFIG_SPL_OF_TRANSLATE must be set to handle the synced bus addresses correctly. A custom U-Boot device tree is also needed since the SPL build removes bus properties from bus nodes which are not explicitly marked with the u-boot,dm-spl or u-boot,dm-pre-reloc flag. Therefore all parent buses of the in the SPL needed devices must be marked with u-boot,dm-pre-reloc. Also since there is no driver for "ti,sysc" compatible property in SPL the buses marked with this compatible string must also be marked with compatible = "simple-bus" to make the underlying devices visible in SPL. Otherwise the matching device drivers aren't found and the uclass drivers are dropped.
Signed-off-by: Bernhard Messerklinger bernhard.messerklinger@br-automation.com ---
arch/arm/dts/am335x-brppt1-mmc-u-boot.dtsi | 80 ++++++++++++++++++++++ configs/brppt1_mmc_defconfig | 2 +- 2 files changed, 81 insertions(+), 1 deletion(-) create mode 100644 arch/arm/dts/am335x-brppt1-mmc-u-boot.dtsi
diff --git a/arch/arm/dts/am335x-brppt1-mmc-u-boot.dtsi b/arch/arm/dts/am335x-brppt1-mmc-u-boot.dtsi new file mode 100644 index 0000000000..0b9a1ccef4 --- /dev/null +++ b/arch/arm/dts/am335x-brppt1-mmc-u-boot.dtsi @@ -0,0 +1,80 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2022 B&R Industrial Automation GmbH - + * https://www.br-automation.com/ + */ + +/ { + ocp { + u-boot,dm-pre-reloc; + }; +}; + +&l4_wkup { + u-boot,dm-pre-reloc; + segment@200000 { + u-boot,dm-pre-reloc; + target-module@0 + { + u-boot,dm-pre-reloc; + compatible = "simple-bus"; + }; + target-module@7000 { + u-boot,dm-pre-reloc; + compatible = "simple-bus"; + }; + target-module@9000 { + u-boot,dm-pre-reloc; + compatible = "simple-bus"; + }; + }; +}; + +&wkup_cm { + u-boot,dm-pre-reloc; +}; + +&l4_wkup_clkctrl { + u-boot,dm-pre-reloc; +}; + +&l4_per { + u-boot,dm-pre-reloc; + segment@0 { + u-boot,dm-pre-reloc; + compatible = "simple-bus"; + target-module@4c000 { + u-boot,dm-pre-reloc; + compatible = "simple-bus"; + }; + }; + + segment@100000 { + u-boot,dm-pre-reloc; + compatible = "simple-bus"; + target-module@ac000 { + u-boot,dm-pre-reloc; + compatible = "simple-bus"; + }; + target-module@ae000 { + u-boot,dm-pre-reloc; + compatible = "simple-bus"; + }; + }; +}; + +&prcm { + u-boot,dm-pre-reloc; +}; + +&gpio0_target { + u-boot,dm-pre-reloc; +}; + +&prcm_clocks { + compatible = "simple-bus"; +}; + +&scm_clocks { + compatible = "simple-bus"; +}; diff --git a/configs/brppt1_mmc_defconfig b/configs/brppt1_mmc_defconfig index b1ed2bcd68..716650aac9 100644 --- a/configs/brppt1_mmc_defconfig +++ b/configs/brppt1_mmc_defconfig @@ -90,7 +90,7 @@ CONFIG_NETCONSOLE=y CONFIG_DM=y CONFIG_SPL_DM=y CONFIG_SPL_DM_SEQ_ALIAS=y -# CONFIG_OF_TRANSLATE is not set +CONFIG_SPL_OF_TRANSLATE=y CONFIG_BOOTCOUNT_LIMIT=y CONFIG_DM_I2C=y CONFIG_I2C_SET_DEFAULT_BUS_NUM=y