[PATCH v2] board: rpi: Pass CMA through from firmware DT

[Peter Robinson]

For a lot of usecases, such as display, camera, media
the Raspberry Pi needs a lot more CMA than distros
configure as default so we should pass this parameter
through so things work as expected. Fix a spelling
mistake while we're at it.

Signed-off-by: Peter Robinson <pbrobinson at gmail.com>
---

v2: Update the cma string

 board/raspberrypi/rpi/rpi.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/board/raspberrypi/rpi/rpi.c b/board/raspberrypi/rpi/rpi.c
index ab5ea85cf9f..dd5a318d239 100644
--- a/board/raspberrypi/rpi/rpi.c
+++ b/board/raspberrypi/rpi/rpi.c
@@ -540,12 +540,15 @@ void  update_fdt_from_fw(void *fdt, void *fw_fdt)
 	if (fdt == fw_fdt)
 		return;
 
-	/* The firmware provides a more precie model; so copy that */
+	/* The firmware provides a more precise model; so copy that */
 	copy_property(fdt, fw_fdt, "/", "model");
 
 	/* memory reserve as suggested by the firmware */
 	copy_property(fdt, fw_fdt, "/", "memreserve");
 
+	/* copy the CMA memory setting from the firmware DT to linux */
+	copy_property(fdt, fw_fdt, "/reserved-memory/linux,cma", "size");
+
 	/* Adjust dma-ranges for the SD card and PCI bus as they can depend on
 	 * the SoC revision
 	 */
-- 
2.47.0