From patchwork Thu Dec 14 09:48:10 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jie Luo X-Patchwork-Id: 13492679 X-Patchwork-Delegate: kuba@kernel.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="HwUP/3IY" Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 74E281994; Thu, 14 Dec 2023 01:49:31 -0800 (PST) Received: from pps.filterd (m0279866.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 3BE8SPg7014660; Thu, 14 Dec 2023 09:49:18 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding:content-type; s= qcppdkim1; bh=MRC8Z48TOdwwqp4jcexel6jg2C4JQxWltiNljtKZ+2w=; b=Hw UP/3IYfG4iZQhyseKDYkuhKqEEGEqA7i++NIGURiu+96L0Glbp11sMfZy6rA9Heh J1+eC1aXSS9uYsf3g6LxebAZjvWq529dP6m0tBxcJwZVCQSWiP68Cvkl+F8gCHat RMckNvrKJCNuqxeIMW7t3yh2Z72+8L/9KhLPCoLFg2mnP+5dSVPRkMtA+FYMI3z5 vzYqzcbhJ4Q7jMCyiLbauQuBCKpA3ONJrGu0Vx93Q8k8h7fb4uOQAUmp51NlK4HG XnvjlNcoG8x1mP/hf2/j0DlCE5Bl3WOCc4hiUc/dWs3wQBXh/HK1TPnllOvSNosf SieUtNlRcNQIi7B3s6Bw== Received: from nalasppmta01.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3uytn68jxx-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 14 Dec 2023 09:49:17 +0000 (GMT) Received: from nalasex01c.na.qualcomm.com (nalasex01c.na.qualcomm.com [10.47.97.35]) by NALASPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 3BE9nHTL024433 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 14 Dec 2023 09:49:17 GMT Received: from akronite-sh-dev02.qualcomm.com (10.80.80.8) by nalasex01c.na.qualcomm.com (10.47.97.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Thu, 14 Dec 2023 01:49:12 -0800 From: Luo Jie To: , , , , , , , , , , , , CC: , , , Subject: [PATCH v7 11/14] net: phy: at803x: add qca808x initial config sequence Date: Thu, 14 Dec 2023 17:48:10 +0800 Message-ID: <20231214094813.24690-12-quic_luoj@quicinc.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231214094813.24690-1-quic_luoj@quicinc.com> References: <20231214094813.24690-1-quic_luoj@quicinc.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01c.na.qualcomm.com (10.47.97.35) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: WwWodg1rUzi9iUBdMCKl9kvLIYZ0l01Q X-Proofpoint-ORIG-GUID: WwWodg1rUzi9iUBdMCKl9kvLIYZ0l01Q X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-12-09_01,2023-12-07_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 malwarescore=0 phishscore=0 mlxlogscore=999 mlxscore=0 priorityscore=1501 lowpriorityscore=0 suspectscore=0 bulkscore=0 impostorscore=0 adultscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2311290000 definitions=main-2312140065 X-Patchwork-Delegate: kuba@kernel.org After GPIO reset, these Ethernet clock sequence needs to be configured before reading the features of PHY, the Ethernet system clock works on 25MHZ. Signed-off-by: Luo Jie --- drivers/net/phy/at803x.c | 84 +++++++++++++++++++++++++++++++++++++++- 1 file changed, 83 insertions(+), 1 deletion(-) diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c index 6a7a7111ff68..204f5ca6001c 100644 --- a/drivers/net/phy/at803x.c +++ b/drivers/net/phy/at803x.c @@ -1090,6 +1090,84 @@ static int qca8084_parse_dt(struct phy_device *phydev) return 0; } +static int qca8084_clock_config(struct phy_device *phydev) +{ + struct at803x_priv *priv; + int ret = 0; + + /* The ethernet clock IDs are only defined in one PHY device + * tree node, and these ethernet clocks only needs to be configured + * one time, which work on the clock rate 25MHZ. + */ + priv = phydev->priv; + if (!priv->clk[SRDS0_SYS_CLK]) + return 0; + + ret = clk_set_rate(priv->clk[SRDS0_SYS_CLK], 25000000); + if (ret) + return ret; + + ret = clk_prepare_enable(priv->clk[SRDS0_SYS_CLK]); + if (ret) + return ret; + + ret = clk_prepare_enable(priv->clk[SRDS1_SYS_CLK]); + if (ret) + return ret; + + /* Reset PCS system clocks */ + reset_control_assert(priv->reset[SRDS0_SYS_RESET]); + reset_control_assert(priv->reset[SRDS1_SYS_RESET]); + fsleep(20000); + + reset_control_deassert(priv->reset[SRDS0_SYS_RESET]); + reset_control_deassert(priv->reset[SRDS1_SYS_RESET]); + + ret = clk_prepare_enable(priv->clk[GEPHY0_SYS_CLK]); + if (ret) + return ret; + + ret = clk_prepare_enable(priv->clk[GEPHY1_SYS_CLK]); + if (ret) + return ret; + + ret = clk_prepare_enable(priv->clk[GEPHY2_SYS_CLK]); + if (ret) + return ret; + + ret = clk_prepare_enable(priv->clk[GEPHY3_SYS_CLK]); + if (ret) + return ret; + + /* Reset ethernet system clocks */ + reset_control_assert(priv->reset[GEPHY0_SYS_RESET]); + reset_control_assert(priv->reset[GEPHY1_SYS_RESET]); + reset_control_assert(priv->reset[GEPHY2_SYS_RESET]); + reset_control_assert(priv->reset[GEPHY3_SYS_RESET]); + fsleep(20000); + + reset_control_deassert(priv->reset[GEPHY0_SYS_RESET]); + reset_control_deassert(priv->reset[GEPHY1_SYS_RESET]); + reset_control_deassert(priv->reset[GEPHY2_SYS_RESET]); + reset_control_deassert(priv->reset[GEPHY3_SYS_RESET]); + + /* Release ethernet DSP reset */ + reset_control_deassert(priv->reset[GEPHY0_RESET]); + reset_control_deassert(priv->reset[GEPHY1_RESET]); + reset_control_deassert(priv->reset[GEPHY2_RESET]); + reset_control_deassert(priv->reset[GEPHY3_RESET]); + reset_control_deassert(priv->reset[GEPHY_DSP_RESET]); + + /* Enable efuse loading into analog circuit */ + ret = qca8084_mii_modify(phydev, QCA8084_EPHY_CFG, + QCA8084_EPHY_LDO_EN, 0); + if (ret) + return ret; + + fsleep(10000); + return 0; +} + static int qca8084_probe(struct phy_device *phydev) { int ret; @@ -1098,7 +1176,11 @@ static int qca8084_probe(struct phy_device *phydev) if (ret) return ret; - return qca8084_parse_and_set_phyaddr(phydev); + ret = qca8084_parse_and_set_phyaddr(phydev); + if (ret) + return ret; + + return qca8084_clock_config(phydev); } static int at803x_probe(struct phy_device *phydev)