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Message-ID: <VI1PR0402MB3600DCD22084A6A0D5190859FF0F0@VI1PR0402MB3600.eurprd04.prod.outlook.com> Date: Mon, 13 May 2019 03:31:59 +0000 From: Andy Duan <fugang.duan@....com> To: Andrew Lunn <andrew@...n.ch> CC: "davem@...emloft.net" <davem@...emloft.net>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "ynezz@...e.cz" <ynezz@...e.cz>, "john@...ozen.org" <john@...ozen.org>, "bgolaszewski@...libre.com" <bgolaszewski@...libre.com>, Petr Štetiar <ynezz@...e.cz>, Maxime Ripard <maxime.ripard@...tlin.com> Subject: RE: [EXT] Re: [PATCH net 2/3] of_net: add property "nvmem-mac-address" for of_get_mac_addr() From: Andrew Lunn <andrew@...n.ch> Sent: Saturday, May 11, 2019 2:18 AM > On Fri, May 10, 2019 at 08:24:03AM +0000, Andy Duan wrote: > > If MAC address read from nvmem cell and it is valid mac address, > > .of_get_mac_addr_nvmem() add new property "nvmem-mac-address" in > > ethernet node. Once user call .of_get_mac_address() to get MAC address > > again, it can read valid MAC address from device tree in directly. > > I suspect putting the MAC address into OF will go away in a follow up patch. It > is a bad idea. > > Andrew I don't know the history why does of_get_mac_addr_nvmem() add the new property "nvmem-mac-address" into OF. But if it already did that, so the patch add the property check in . of_get_mac_address() to avoid multiple read nvmem cells in driver. Andy
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