As mentioned in `bcm2711.dtsi`, line 412, the `dma-ranges` property
of the `/emmc2bus` node is overridden by the video core firmware:
> /*
> * emmc2 has different DMA constraints based on SoC revisions. It was
> * moved into its own bus, so as for RPi4's firmware to update them.
> * The firmware will find whether the emmc2bus alias is defined, and if
> * so, it'll edit the dma-ranges property below accordingly.
> */
This change adds a fixup that copies the correct value of this property
from the video core device tree.
Signed-off-by: Jonas Richardsen <jonasrichardsen@xxxxxxxxx>
---
arch/arm/boards/raspberry-pi/rpi-common.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm/boards/raspberry-pi/rpi-common.c b/arch/arm/boards/raspberry-pi/rpi-common.c
index 3c685852d3..04e1a899f1 100644
--- a/arch/arm/boards/raspberry-pi/rpi-common.c
+++ b/arch/arm/boards/raspberry-pi/rpi-common.c
@@ -375,6 +375,7 @@ static void rpi_vc_fdt_parse(struct device_node *root)
register_vc_property_fixup(root, "/reserved-memory/nvram@0", "reg");
register_vc_property_fixup(root, "/reserved-memory/nvram@0", "status");
register_vc_fixup(root, "/hat");
+ register_vc_property_fixup(root, "/emmc2bus", "dma-ranges");
register_vc_fixup(root, "/chosen/bootloader");
chosen = register_vc_fixup(root, "/chosen");
if (!chosen) {
--
2.42.0
