Hi Patrick
On 11/15/21 4:32 PM, Patrick Delaunay wrote: > Enable an existing simple framebuffer node in the Linux kernel device > tree and the add the associated reserved memory node to preserved the > resources (clock, memory) used by the stm32 video driver to display > the splashscreen = background in exlinux.conf file. > > These resources will be released by the Linux driver only when the > associated driver is ready to avoid transition issues during the Linux > kernel initialization between U-Boot splash screen and the final display. > > See Linux documentation for details: > Documentation/devicetree/bindings/display/simple-framebuffer.yaml > > Signed-off-by: Patrick Delaunay <patrick.delau...@foss.st.com> > --- > > board/st/stm32mp1/stm32mp1.c | 4 ++++ > configs/stm32mp15_basic_defconfig | 1 + > configs/stm32mp15_defconfig | 1 + > configs/stm32mp15_trusted_defconfig | 1 + > 4 files changed, 7 insertions(+) > > diff --git a/board/st/stm32mp1/stm32mp1.c b/board/st/stm32mp1/stm32mp1.c > index 84592677e4..45f2ca81a6 100644 > --- a/board/st/stm32mp1/stm32mp1.c > +++ b/board/st/stm32mp1/stm32mp1.c > @@ -13,6 +13,7 @@ > #include <dm.h> > #include <env.h> > #include <env_internal.h> > +#include <fdt_simplefb.h> > #include <fdt_support.h> > #include <g_dnl.h> > #include <generic-phy.h> > @@ -914,6 +915,9 @@ int ft_board_setup(void *blob, struct bd_info *bd) > if (IS_ENABLED(CONFIG_FDT_FIXUP_PARTITIONS)) > fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes)); > > + if (CONFIG_IS_ENABLED(FDT_SIMPLEFB)) > + fdt_simplefb_enable_and_mem_rsv(blob); > + > return 0; > } > #endif > diff --git a/configs/stm32mp15_basic_defconfig > b/configs/stm32mp15_basic_defconfig > index 2cc26d4066..c9ed2239ca 100644 > --- a/configs/stm32mp15_basic_defconfig > +++ b/configs/stm32mp15_basic_defconfig > @@ -34,6 +34,7 @@ CONFIG_SPL_DM_SPI_FLASH=y > CONFIG_SPL_POWER=y > CONFIG_SPL_SPI_FLASH_MTD=y > CONFIG_SYS_SPI_U_BOOT_OFFS=0x80000 > +CONFIG_FDT_SIMPLEFB=y > CONFIG_SYS_PROMPT="STM32MP> " > CONFIG_CMD_ADTIMG=y > CONFIG_CMD_ERASEENV=y > diff --git a/configs/stm32mp15_defconfig b/configs/stm32mp15_defconfig > index 4c6a52fc54..e10f4cedc8 100644 > --- a/configs/stm32mp15_defconfig > +++ b/configs/stm32mp15_defconfig > @@ -19,6 +19,7 @@ CONFIG_SYS_LOAD_ADDR=0xc2000000 > CONFIG_FIT=y > CONFIG_BOOTDELAY=1 > CONFIG_BOOTCOMMAND="run bootcmd_stm32mp" > +CONFIG_FDT_SIMPLEFB=y > CONFIG_SYS_PROMPT="STM32MP> " > CONFIG_CMD_ADTIMG=y > CONFIG_CMD_ERASEENV=y > diff --git a/configs/stm32mp15_trusted_defconfig > b/configs/stm32mp15_trusted_defconfig > index feca26e973..83bd93e3a1 100644 > --- a/configs/stm32mp15_trusted_defconfig > +++ b/configs/stm32mp15_trusted_defconfig > @@ -20,6 +20,7 @@ CONFIG_SYS_LOAD_ADDR=0xc2000000 > CONFIG_FIT=y > CONFIG_BOOTDELAY=1 > CONFIG_BOOTCOMMAND="run bootcmd_stm32mp" > +CONFIG_FDT_SIMPLEFB=y > CONFIG_SYS_PROMPT="STM32MP> " > CONFIG_CMD_ADTIMG=y > CONFIG_CMD_ERASEENV=y > Reviewed-by: Patrice Chotard <patrice.chot...@foss.st.com> Thanks Patrice
