[PATCH 2/9] arm64: dts: qcom: arduino-imola: Describe boot1 NVMEM layout

[Loic Poulain]

On Arduino Uno-Q, the eMMC boot1 partition is factory provisioned
with device-specific information such as the WiFi MAC address
and the Bluetooth BD address. This partition can serve as an
alternative to additional non-volatile memory, such as a
dedicated EEPROM.

The eMMC boot partitions are typically good candidates, as they
are realively small, read-only by default (and can be enforced
as hardware read-only), and are not affected by board reflashing
procedures, which generally target the eMMC user or GP partitions.

Describe the corresponding nvmem-layout for the WiFi and
Bluetooth addresses.

Signed-off-by: Loic Poulain <loic.poulain@xxxxxxxxxxxxxxxx>
---
 arch/arm64/boot/dts/qcom/qrb2210-arduino-imola.dts | 24 ++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/qrb2210-arduino-imola.dts b/arch/arm64/boot/dts/qcom/qrb2210-arduino-imola.dts
index bf088fa9807f040f0c8f405f9111b01790b09377..dc85cf94f71cac8666cab30ccf37cc2d2f8fd941 100644
--- a/arch/arm64/boot/dts/qcom/qrb2210-arduino-imola.dts
+++ b/arch/arm64/boot/dts/qcom/qrb2210-arduino-imola.dts
@@ -409,7 +409,31 @@ &sdhc_1 {
 	no-sdio;
 	no-sd;
 
+	#address-cells = <1>;
+	#size-cells = <0>;
+
 	status = "okay";
+
+	card@0 {
+		compatible = "mmc-card";
+		reg = <0>;
+
+		partitions-boot1 {
+			nvmem-layout {
+				compatible = "fixed-layout";
+				#address-cells = <1>;
+				#size-cells = <1>;
+
+				wifi_mac_addr: mac-addr@4400 {
+					reg = <0x4400 0x6>;
+				};
+
+				bd_addr: bd-addr@5400 {
+					reg = <0x5400 0x6>;
+				};
+			};
+		};
+	};
 };
 
 &spi5 {

-- 
2.34.1