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: 13335553 X-Patchwork-Delegate: kuba@kernel.org Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EC6214A12 for ; Mon, 31 Jul 2023 22:24:33 +0000 (UTC) Received: from pidgin.makrotopia.org (pidgin.makrotopia.org [185.142.180.65]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F0BA112B; Mon, 31 Jul 2023 15:24:32 -0700 (PDT) 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: Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net X-Patchwork-Delegate: kuba@kernel.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);