[PATCH 4/6] ARM: dts: bcm2711: Expose boot-loader configuration

[Nicolas Saenz Julienne]

RPi4's co-processor will copy the board's bootloader configuration in
memory. Expose it to user-space by using 'nvmem-rmem'.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulie...@suse.de>
---
 arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts 
b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
index c58e58e8ce39..261169eb5e3b 100644
--- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
+++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
@@ -26,6 +26,17 @@ aliases {
                ethernet0 = &genet;
                pcie0 = &pcie0;
                eeprom = &eeprom;
+               fw_config = &fw_config;
+       };
+
+       fw_config: fw-config {
+               compatible = "nvmem-rmem";
+               memory-region = <&eeprom>;
+               /*
+                * Will be enabled by the bootloader if the reserved memory
+                * region is valid.
+                */
+               status = "disabled";
        };
 
        leds {
-- 
2.29.2