Hi Patrick
On 11/15/21 4:32 PM, Patrick Delaunay wrote: > Align the framebuffer size on MMU_SECTION_SIZE in kernel, = max 2MB for > LPAE for armV7, to avoid issue with the simple frame buffer activation, > when U-Boot add a reserved memory in the kernel device tree to preserve > the splash screen until Linux driver initialization. > > See Linux documentation for details: > Documentation/devicetree/bindings/display/simple-framebuffer.yaml > > Signed-off-by: Patrick Delaunay <patrick.delau...@foss.st.com> > --- > > drivers/video/stm32/stm32_ltdc.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/drivers/video/stm32/stm32_ltdc.c > b/drivers/video/stm32/stm32_ltdc.c > index 65c882d9f1..87e5fd54d9 100644 > --- a/drivers/video/stm32/stm32_ltdc.c > +++ b/drivers/video/stm32/stm32_ltdc.c > @@ -459,7 +459,10 @@ static int stm32_ltdc_bind(struct udevice *dev) > uc_plat->size = CONFIG_VIDEO_STM32_MAX_XRES * > CONFIG_VIDEO_STM32_MAX_YRES * > (CONFIG_VIDEO_STM32_MAX_BPP >> 3); > - dev_dbg(dev, "frame buffer max size %d bytes\n", uc_plat->size); > + /* align framebuffer on kernel MMU_SECTION_SIZE = max 2MB for LPAE */ > + uc_plat->align = SZ_2M; > + dev_dbg(dev, "frame buffer max size %d bytes align %x\n", > + uc_plat->size, uc_plat->align); > > return 0; > } > Reviewed-by: Patrice Chotard <patrice.chot...@foss.st.com> Thanks Patrice
