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Message-ID: <20221231064923.GD6112@T480> Date: Sat, 31 Dec 2022 14:49:24 +0800 From: Shawn Guo <shawnguo@...nel.org> To: Nikolaus Voss <nikolaus.voss@...g-streit.com> Cc: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>, Sascha Hauer <s.hauer@...gutronix.de>, Pengutronix Kernel Team <kernel@...gutronix.de>, Fabio Estevam <festevam@...il.com>, NXP Linux Team <linux-imx@....com>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Rob Herring <robh+dt@...nel.org>, nv@...n.de, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, devicetree@...r.kernel.org Subject: Re: [PATCH 2/2] imx6qdl.dtsi: use MAC-address from nvmem On Wed, Nov 02, 2022 at 03:27:19PM +0100, Nikolaus Voss wrote: > 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@...g-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@...8000 { > <&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"; May I ask where is the support of FEC driver for this? Shawn > 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@...0000 { /* TZASC1 */ > -- > 2.34.1 >
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