[PATCH 2/2] imx6qdl.dtsi: use MAC-address from nvmem

Nikolaus Voss
2022-11-28T08:48:00Z

IMX6QDL has fuse locations specified for storing the MAC for the
built-in ethernet (Table 5-8 in Reference Manual).
Define the fuse location in ocotp and refer to them in fec-ethernet.

If the cells are not flashed, the driver behavior is unchanged, i.e.
other MAC sources will be probed and a random MAC will be used as a
last resort.

Signed-off-by: Nikolaus Voss <nikolaus.voss@haag-streit.com>
---
arch/arm/boot/dts/imx6qdl.dtsi | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi
index 4f7fefc14d0ac..7449d554ef1aa 100644
--- a/arch/arm/boot/dts/imx6qdl.dtsi
+++ b/arch/arm/boot/dts/imx6qdl.dtsi
@@ -1053,6 +1053,8 @@ fec: ethernet@2188000 {
<&clks IMX6QDL_CLK_ENET_REF>;
clock-names = "ipg", "ahb", "ptp", "enet_out";
fsl,stop-mode = <&gpr 0x34 27>;
+ nvmem-cells = <&fec_mac_addr>;
+ nvmem-cell-names = "mac-address";
status = "disabled";
};

@@ -1186,6 +1188,10 @@ tempmon_calib: calib@38 {
tempmon_temp_grade: temp-grade@20 {
reg = <0x20 4>;
};
+
+ fec_mac_addr: mac-addr@88 {
+ reg = <0x88 6>;
+ };
};

tzasc@21d0000 { /* TZASC1 */
--
2.34.1