From patchwork Mon Jul 31 22:24:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Golle X-Patchwork-Id: 13335555 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0648AC001DF for ; Mon, 31 Jul 2023 22:25:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Cc:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=xWlOoIELbHfBZA6lFQKWy0XnQmf80Nqhr8FqXqYf7WA=; b=ThqBnvADUqOEvV CjlOKA4N3w9i1S+eROn/mZeja2J2SbUy7k75FQTY+wspSLcKjUKMWWczWsM0cX3dQ2uk7h7Z/8sTD 5Wq72xypytbBjwPAGFsKyjibgs+cFu8JlaE48GLcdXpEtL+ZVuGAzuNfXqx23vcqa7TQ/V1Y2qKMI RiqmE7v8yrbvmuDn8CpOWsynyw5jfXR2jO4n7oYZSdYSaCbtilhWQz1sV0qbRtA8kbgo8y+jS2R4d dy0/zWoIl4IXkbV+ObaAaEoGBmJyaZjMgOKIP05RUwmxmoeEvzpovvco3Vj5m9jrAXbCT8wvxDmme rpRAPPtPr4rH4JYk9VWQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qQbJd-00HUXM-1z; Mon, 31 Jul 2023 22:24:37 +0000 Received: from pidgin.makrotopia.org ([185.142.180.65]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qQbJa-00HUWm-2g; Mon, 31 Jul 2023 22:24:36 +0000 Received: from local by pidgin.makrotopia.org with esmtpsa (TLS1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.96) (envelope-from ) id 1qQbJO-0002SO-38; Mon, 31 Jul 2023 22:24:23 +0000 Date: Mon, 31 Jul 2023 23:24:06 +0100 From: Daniel Golle To: Felix Fietkau , Lorenzo Bianconi , Ryder Lee , Shayne Chen , Sean Wang , Kalle Valo , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , linux-wireless@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Subject: [PATCH v3 2/2] wifi: mt76: support per-band MAC addresses from OF child nodes Message-ID: References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230731_152434_869720_247F46C1 X-CRM114-Status: GOOD ( 14.16 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org With dual-band-dual-congruent front-ends which appear as two independent radios it is desirable to assign a per-band MAC address from device-tree, eg. using nvmem-cells. Support specifying MAC-address related properties in band-specific child nodes, e.g. wifi@0,0 { reg = <0x0000 0 0 0 0>; #addr-cells = <1>; #size-cells = <0>; band@0 { /* 2.4 GHz */ reg = <0>; nvmem-cells = <&macaddr 2>; nvmem-cell-names = "mac-address"; }; band@1 { /* 5 GHz */ reg = <1>; nvmem-cells = <&macaddr 3>; nvmem-cell-names = "mac-address"; }; }; Signed-off-by: Daniel Golle Tested-by: Shiji Yang --- Changes since v2: * none Changes since v1: * refactor and add missing of_node_put() drivers/net/wireless/mediatek/mt76/eeprom.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/eeprom.c b/drivers/net/wireless/mediatek/mt76/eeprom.c index 36564930aef12..c2b3386cada1c 100644 --- a/drivers/net/wireless/mediatek/mt76/eeprom.c +++ b/drivers/net/wireless/mediatek/mt76/eeprom.c @@ -161,9 +161,25 @@ void mt76_eeprom_override(struct mt76_phy *phy) { struct mt76_dev *dev = phy->dev; - struct device_node *np = dev->dev->of_node; + struct device_node *np = dev->dev->of_node, *band_np; + bool found_mac = false; + u32 reg; + int ret; + + for_each_child_of_node(np, band_np) { + ret = of_property_read_u32(band_np, "reg", ®); + if (ret) + continue; + + if (reg == phy->band_idx) { + found_mac = !of_get_mac_address(band_np, phy->macaddr); + of_node_put(band_np); + break; + } + } - of_get_mac_address(np, phy->macaddr); + if (!found_mac) + of_get_mac_address(np, phy->macaddr); if (!is_valid_ether_addr(phy->macaddr)) { eth_random_addr(phy->macaddr);