This patch is required for correct SPL device tree creation by fdtgrep as fdtgrep looks for u-boot,dm-pre-reloc property of the node to include it in the spl device tree.
Not adding it in these subnodes ignores the pin muxing of peripherals which is almost always in the subnodes.
Signed-off-by: Vikas Manocha vikas.manocha@st.com --- arch/arm/dts/stm32f746-disco.dts | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/arch/arm/dts/stm32f746-disco.dts b/arch/arm/dts/stm32f746-disco.dts index 2c7fa79..30c92ef 100644 --- a/arch/arm/dts/stm32f746-disco.dts +++ b/arch/arm/dts/stm32f746-disco.dts @@ -96,15 +96,18 @@
&pinctrl { usart1_pins_a: usart1@0 { + u-boot,dm-pre-reloc; pins1 { - pinmux = <STM32F746_PA9_FUNC_USART1_TX>; + pinmux = <STM32F746_PA9_FUNC_USART1_TX>; bias-disable; drive-push-pull; slew-rate = <2>; + u-boot,dm-pre-reloc; }; pins2 { pinmux = <STM32F746_PB7_FUNC_USART1_RX>; bias-disable; + u-boot,dm-pre-reloc; }; };
@@ -136,7 +139,9 @@ };
fmc_pins: fmc@0 { + u-boot,dm-pre-reloc; pins { + u-boot,dm-pre-reloc; pinmux = <STM32F746_PD10_FUNC_FMC_D15>, <STM32F746_PD9_FUNC_FMC_D14>, <STM32F746_PD8_FUNC_FMC_D13>, @@ -198,6 +203,7 @@ mr-nbanks = <1>; /* Memory configuration from sdram datasheet MT48LC_4M32_B2B5-6A */ bank1: bank@0 { + u-boot,dm-pre-reloc; st,sdram-control = /bits/ 8 <NO_COL_8 NO_ROW_12 MWIDTH_16 BANKS_4 CAS_3 SDCLK_2 RD_BURST_EN RD_PIPE_DL_0>;