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

Peter Robinson pbrobinson at gmail.com
Fri Oct 4 10:41:20 CEST 2024


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>
---
 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..d4dbd96bc96 100644
--- a/board/raspberrypi/rpi/rpi.c
+++ b/board/raspberrypi/rpi/rpi.c
@@ -540,7 +540,7 @@ 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 */
@@ -561,6 +561,9 @@ void  update_fdt_from_fw(void *fdt, void *fw_fdt)
 
 	/* address of the PHY device as provided by the firmware  */
 	copy_property(fdt, fw_fdt, "ethernet0/mdio at e14/ethernet-phy at 1", "reg");
+
+	/* copy the CMA memory setting from the firmware DT to linux */
+	copy_property(fdt, fw_fdt, "cma", "size");
 }
 
 int ft_board_setup(void *blob, struct bd_info *bd)
-- 
2.46.2



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