arm64: dts: rockchip: describe mcu eeprom cells on rk3568-ts433

The MCU's eeprom contains the unit's serial and a number of slots for
mac-addresses. As the MCU seems to be used in different devices, up to
8 mac addresses can live there and the unused slots are actually
initialized with empty mac-address strings like 00:00:00:00:05:09 .

Interestingly on the TS-433, the PCIe ethernet adapter brings its own
memory to hold its mac, and the gmac0 is supposed to get its mac from
the second mac-slot, while the first one stays empty.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patch.msgid.link/20251112214206.423244-3-heiko@sntech.de

diff --git a/arch/arm64/boot/dts/rockchip/rk3568-qnap-ts433.dts b/arch/arm64/boot/dts/rockchip/rk3568-qnap-ts433.dts
index 5656554ca2840bca8c5cba8bd4b000341c3b776c..224db87973b2cab4b52e70311f2d65e994509a37 100644 (file)
--- a/arch/arm64/boot/dts/rockchip/rk3568-qnap-ts433.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3568-qnap-ts433.dts
@@ -655,6 +655,68 @@
                        #cooling-cells = <2>;
                        cooling-levels = <0 64 89 128 166 204 221 238>;
                };
+
+               nvmem-layout {
+                       compatible = "fixed-layout";
+                       #address-cells = <1>;
+                       #size-cells = <1>;
+
+                       serial-number@0 {
+                               reg = <0x0 0x13>;
+                       };
+
+                       ext-port@22 {
+                               reg = <0x22 0x2>;
+                       };
+
+                       mac0: mac@24 {
+                               compatible = "mac-base";
+                               reg = <0x24 0x11>;
+                               #nvmem-cell-cells = <1>;
+                       };
+
+                       mac1: mac@35 {
+                               compatible = "mac-base";
+                               reg = <0x35 0x11>;
+                               #nvmem-cell-cells = <1>;
+                       };
+
+                       mac2: mac@46 {
+                               compatible = "mac-base";
+                               reg = <0x46 0x11>;
+                               #nvmem-cell-cells = <1>;
+                       };
+
+                       mac3: mac@57 {
+                               compatible = "mac-base";
+                               reg = <0x57 0x11>;
+                               #nvmem-cell-cells = <1>;
+                       };
+
+                       mac4: mac@68 {
+                               compatible = "mac-base";
+                               reg = <0x68 0x11>;
+                               #nvmem-cell-cells = <1>;
+                       };
+
+                       mac5: mac@79 {
+                               compatible = "mac-base";
+                               reg = <0x79 0x11>;
+                               #nvmem-cell-cells = <1>;
+                       };
+
+                       mac6: mac@8a {
+                               compatible = "mac-base";
+                               reg = <0x8a 0x11>;
+                               #nvmem-cell-cells = <1>;
+                       };
+
+                       mac7: mac@9b {
+                               compatible = "mac-base";
+                               reg = <0x9b 0x11>;
+                               #nvmem-cell-cells = <1>;
+                       };
+               };
        };
 };