From mboxrd@z Thu Jan 1 00:00:00 1970 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 CA8C5CA5FCE for ; Sun, 4 Oct 2026 13:41:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Ihd+dofvU6Mcgj3MdWdld4bUs480ZOkVZ8XCTiohnu8=; b=OSktHsDY/WqqUZRbh0eIhjOuWh IK/QCMA+roCVXxBZOb6SCMXoDvP5aSvhkU/kxRvLVkrqf4l8qhuWU0J5LHHVxq6g8gtt+poi7wVLr jz75VY2CRTZmRXXhfTJ0DrFff2XM5+v18X1cTy+dr2xrjXFB+IyXbmUdu84C6CkV4hucV1mLQFDXm CFwF/ZCrnSgWqCGOfPEyJQIbr8RMY0SEr/tGoOfAUqC7n4q4Mw5c221Jfiip1mIABvJCl1a9fnyDx f+TzQNvEjS0/SP/JjejQ03sdjyXWhBX1HasOup07ofgFIwJ5k2LUyoR7twF0QhE5rf1IF0jw12nH5 JA2Edcnw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xDMSo-0000000ErLX-42YG; Sun, 04 Oct 2026 13:41:15 +0000 Received: from smtpout-03.galae.net ([185.246.85.4]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1xDMSi-0000000ErK0-2L1y for linux-mediatek@lists.infradead.org; Sun, 04 Oct 2026 13:41:13 +0000 Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-03.galae.net (Postfix) with ESMTPS id 83BF54E4115A; Sun, 4 Oct 2026 13:41:05 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 29736604FE; Sun, 4 Oct 2026 13:41:05 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 2A72C1032817F; Sun, 4 Oct 2026 15:40:56 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1791121263; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:content-language:in-reply-to:references; bh=Ihd+dofvU6Mcgj3MdWdld4bUs480ZOkVZ8XCTiohnu8=; b=NvJQmWY6oV3Ja8xANIq3B3P9pcEN+tee1cqds4XePR5AAnzLOaknyImx+sZw2QP9RrlXLL eHpb9Q6y8Qr3aXJXh6klwYhtolMHCP/1xooHI/SZXhaBSs9O14zhoWt1KBOvYa5aGJyZAt ypm/zMhH98KMkIWI4HKqQWRMz6NE3D1apdac1VRIoszUyE8Iaz30wjhq8UqZACrqPekFTg CnBgGke4wA6VzRxfbOBuPy6jFZGwQjmPCX8usxGOlLV9F34mKppDxW5zsU9wkxnJfRTYjF VcV9c4vtzdMC3s6ZpMKmKAHHk0XGLfT8HIIXKckonFsxD8tXPqvwsrAZNQClLg== Message-ID: Date: Sun, 4 Oct 2026 15:40:56 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH net-next v2 3/7] net: stmmac: mediatek: add RX/TX delay stage divider in platform data To: Louis-Alexis Eyraud , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Richard Cochran , Matthias Brugger , AngeloGioacchino Del Regno , Biao Huang , Maxime Coquelin , Alexandre Torgue Cc: kernel@collabora.com, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-stm32@st-md-mailman.stormreply.com References: <20260924-dwmac-mediatek-mt8189-v2-0-430bd74d5ef9@collabora.com> <20260924-dwmac-mediatek-mt8189-v2-3-430bd74d5ef9@collabora.com> Content-Language: en-US From: Maxime Chevallier In-Reply-To: <20260924-dwmac-mediatek-mt8189-v2-3-430bd74d5ef9@collabora.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Last-TLS-Session-Version: TLSv1.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261004_064111_478157_A0263984 X-CRM114-Status: GOOD ( 15.36 ) X-BeenThere: linux-mediatek@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-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Hi, On 9/24/26 09:23, Louis-Alexis Eyraud wrote: > In preparation of newer SoC support, that have like MT8189 SoC > different RX and TX internal delay stage steps than MT8188/MT8195, add > the RX and TX delay stage divider values in the variant platform data > and replace the hardcoded value use in mt8195_set_delay. > > Signed-off-by: Louis-Alexis Eyraud Reviewed-by: Maxime Chevallier Maxime > --- > drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c | 20 ++++++++++++++++++-- > 1 file changed, 18 insertions(+), 2 deletions(-) > > diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c > index f7eb85110df0..1c532cc3a975 100644 > --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c > +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c > @@ -100,6 +100,8 @@ struct mediatek_dwmac_variant { > > u32 rx_delay_max; > u32 tx_delay_max; > + u16 rx_delay_stage_div; > + u16 tx_delay_stage_div; > u8 dma_bit_mask; > }; > > @@ -300,13 +302,25 @@ static int mt8195_set_interface(struct mediatek_dwmac_plat_data *plat, > > static int mt8195_set_delay(struct mediatek_dwmac_plat_data *plat) > { > + u16 rx_delay_stage_div = plat->variant->rx_delay_stage_div; > + u16 tx_delay_stage_div = plat->variant->tx_delay_stage_div; > struct mac_delay_struct *mac_delay = &plat->mac_delay; > - u32 rx_delay_stage_val = mac_delay->rx_delay / MT8195_DLY_RXC_STAGE_DIV; > - u32 tx_delay_stage_val = mac_delay->tx_delay / MT8195_DLY_TXC_STAGE_DIV; > + u32 rx_delay_stage_val; > + u32 tx_delay_stage_val; > u32 gtxc_delay_val = 0; > u32 rmii_delay_val = 0; > u32 delay_val = 0; > > + if (rx_delay_stage_div) > + rx_delay_stage_val = mac_delay->rx_delay / rx_delay_stage_div; > + else > + rx_delay_stage_val = 0; > + > + if (tx_delay_stage_div) > + tx_delay_stage_val = mac_delay->tx_delay / tx_delay_stage_div; > + else > + tx_delay_stage_val = 0; > + > switch (plat->phy_mode) { > case PHY_INTERFACE_MODE_MII: > delay_val |= FIELD_PREP(MT8195_DLY_TXC_ENABLE, > @@ -415,6 +429,8 @@ static const struct mediatek_dwmac_variant mt8195_gmac_variant = { > .num_clks = ARRAY_SIZE(mt8195_dwmac_clk_l), > .rx_delay_max = MT8195_DLY_RXC_MAX, > .tx_delay_max = MT8195_DLY_TXC_MAX, > + .rx_delay_stage_div = MT8195_DLY_RXC_STAGE_DIV, > + .tx_delay_stage_div = MT8195_DLY_TXC_STAGE_DIV, > .dma_bit_mask = 35, > }; > >