[PATCH 2/2] video: meson: Use reserving memory function without kernel linear mapping

Michael Trimarchi michael at amarulasolutions.com
Tue Feb 25 06:10:21 CET 2020


Memory reserved for the simple framebuffer should not be used
and part of memory linear mapping. See
https://patchwork.kernel.org/patch/10486131/ for more detailed
background information and discussion.

Signed-off-by: Michael Trimarchi <michael at amarulasolutions.com>
---
Changes RFC -> v1:
	- Fix compilation issue on RFC
	- change node name from display_reserved to display-reserved
---
 drivers/video/meson/meson_vpu.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/video/meson/meson_vpu.c b/drivers/video/meson/meson_vpu.c
index 4eb66398d0..5bfad05d75 100644
--- a/drivers/video/meson/meson_vpu.c
+++ b/drivers/video/meson/meson_vpu.c
@@ -173,9 +173,9 @@ static void meson_vpu_setup_simplefb(void *fdt)
 	 * at the end of the RAM and we strip this portion from the kernel
 	 * allowed region
 	 */
-	mem_start = gd->bd->bi_dram[0].start;
-	mem_size = gd->bd->bi_dram[0].size - meson_fb.fb_size;
-	ret = fdt_fixup_memory_banks(fdt, &mem_start, &mem_size, 1);
+	mem_start = meson_fb.base;
+	mem_size = meson_fb.fb_size;
+	ret = fdt_fixup_reserved_memory(fdt, "display-reserved", &mem_start, &mem_size);
 	if (ret) {
 		eprintf("Cannot setup simplefb: Error reserving memory\n");
 		return;
-- 
2.17.1



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