From patchwork Wed Feb 23 10:14:35 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 1596599 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256 header.s=google header.b=SYmRoB+A; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by bilbo.ozlabs.org (Postfix) with ESMTP id 4K3X2y4JlGz9sG0 for ; Wed, 23 Feb 2022 21:14:50 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239517AbiBWKPO (ORCPT ); Wed, 23 Feb 2022 05:15:14 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41010 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239512AbiBWKPO (ORCPT ); Wed, 23 Feb 2022 05:15:14 -0500 Received: from mail-lj1-x22c.google.com (mail-lj1-x22c.google.com [IPv6:2a00:1450:4864:20::22c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 464518B6E3 for ; Wed, 23 Feb 2022 02:14:46 -0800 (PST) Received: by mail-lj1-x22c.google.com with SMTP id s25so1644167lji.5 for ; Wed, 23 Feb 2022 02:14:46 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=bKXCxz8PO7s7Qk0bP2QxK8inFr7HkdpbFAomn9XlFeA=; b=SYmRoB+AQ9vkH7X2hlq89XsfoKRTQiaSb7C6IsJI6VYl7pRXKKkMv/oWn2bxru2XIm Tmo9/csYFFQvykTeLq3CzFwRsHpEl/y4e2QTvoagFVAMhSRKoQP8F8W0Mj+wCbiwEm6j BqcIa0Kl7ltWmOASpDJtDjuQTf7ExZS55AiheYC3y9VbtHEKcUEwwbTK5GQA6nHpvEG2 nhd3PwkecHEbcQSzAJMRTf+yfBnjsCLBGWx5YmiRMeMLxntpQW1gpQLyInIdC9tB3m/f MdxyMYdVo9d74lASdXJtQwS6fy+nGDiRmdzxVwXIXXqwIyDIkHW8cTtb0Wched/Ifs7l awtg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=bKXCxz8PO7s7Qk0bP2QxK8inFr7HkdpbFAomn9XlFeA=; b=RFEdVm0kwwtXk+PfM3fnlLt2sG/IinAiB/gOzzlCZSRA6vtkvaO+fh0nez9RzMVBbF PGd5nGgnPZmUhmtRvHLilI9OXI41Lx6NrsFDixUNBH6aeN5SIJddyA//tmCs/DfUX9kG 6zTojLiCG9lsvyavzt+gtaYzz/q+1+rr2ZsyGXPtwlJ+L7qbEulYYlLFulQ2GPq6k78f Uqt2qBF/sesuwLw7WBv9sp8ao2Vyk3IQaxd/lVa2m/Uh7X6jnC0cQ4uFHUdMneosBH+p CVdBx3EpAuja/G1fORRP/VarVHQ2uXvdLcRXbFbAX7MgNRhxR6svvBRjRE/S18h5ZQBQ jhZA== X-Gm-Message-State: AOAM532LGCVX5aOHPIm4NBg3n0jxKF536rvOF9Xw/GqR0bMs2gVc6qgS 0MtFJlwnGkEC9j7zrNr3zeyMQA== X-Google-Smtp-Source: ABdhPJwGkiuibP/yRjiyS+0In7zGWu8vKGOk5v5Yvo9mAgWIYvnW2zN8WqLo+mR88pJiYeolSYmnHw== X-Received: by 2002:a05:651c:14f:b0:23d:8a2a:456d with SMTP id c15-20020a05651c014f00b0023d8a2a456dmr21255258ljd.196.1645611284505; Wed, 23 Feb 2022 02:14:44 -0800 (PST) Received: from eriador.lumag.spb.ru ([94.25.228.217]) by smtp.gmail.com with ESMTPSA id s9sm2060256ljd.79.2022.02.23.02.14.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 23 Feb 2022 02:14:44 -0800 (PST) From: Dmitry Baryshkov To: Andy Gross , Bjorn Andersson , Rob Herring , Vinod Koul , Kishon Vijay Abraham I , Stanimir Varbanov , Lorenzo Pieralisi Cc: Bjorn Helgaas , =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= , linux-arm-msm@vger.kernel.org, linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-phy@lists.infradead.org Subject: [PATCH v6 4/4] PCI: qcom: Add SM8450 PCIe support Date: Wed, 23 Feb 2022 13:14:35 +0300 Message-Id: <20220223101435.447839-5-dmitry.baryshkov@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220223101435.447839-1-dmitry.baryshkov@linaro.org> References: <20220223101435.447839-1-dmitry.baryshkov@linaro.org> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org On SM8450 platform PCIe hosts do not use all the clocks (and add several additional clocks), so expand the driver to handle these requirements. PCIe0 and PCIe1 hosts use different sets of clocks, so separate entries are required. Reviewed-by: Bjorn Andersson Signed-off-by: Dmitry Baryshkov --- drivers/pci/controller/dwc/pcie-qcom.c | 57 ++++++++++++++++++++------ 1 file changed, 44 insertions(+), 13 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index 7e97820eb575..0bb6d0e14cbb 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -161,7 +161,7 @@ struct qcom_pcie_resources_2_3_3 { /* 6 clocks typically, 7 for sm8250 */ struct qcom_pcie_resources_2_7_0 { - struct clk_bulk_data clks[7]; + struct clk_bulk_data clks[9]; int num_clks; struct regulator_bulk_data supplies[2]; struct reset_control *pci_reset; @@ -195,7 +195,10 @@ struct qcom_pcie_ops { struct qcom_pcie_cfg { const struct qcom_pcie_ops *ops; unsigned int pipe_clk_need_muxing:1; + unsigned int has_tbu_clk:1; unsigned int has_ddrss_sf_tbu_clk:1; + unsigned int has_aggre0_clk:1; + unsigned int has_aggre1_clk:1; }; struct qcom_pcie { @@ -1146,6 +1149,7 @@ static int qcom_pcie_get_resources_2_7_0(struct qcom_pcie *pcie) struct qcom_pcie_resources_2_7_0 *res = &pcie->res.v2_7_0; struct dw_pcie *pci = pcie->pci; struct device *dev = pci->dev; + unsigned int idx; int ret; res->pci_reset = devm_reset_control_get_exclusive(dev, "pci"); @@ -1159,18 +1163,22 @@ static int qcom_pcie_get_resources_2_7_0(struct qcom_pcie *pcie) if (ret) return ret; - res->clks[0].id = "aux"; - res->clks[1].id = "cfg"; - res->clks[2].id = "bus_master"; - res->clks[3].id = "bus_slave"; - res->clks[4].id = "slave_q2a"; - res->clks[5].id = "tbu"; - if (pcie->cfg->has_ddrss_sf_tbu_clk) { - res->clks[6].id = "ddrss_sf_tbu"; - res->num_clks = 7; - } else { - res->num_clks = 6; - } + idx = 0; + res->clks[idx++].id = "aux"; + res->clks[idx++].id = "cfg"; + res->clks[idx++].id = "bus_master"; + res->clks[idx++].id = "bus_slave"; + res->clks[idx++].id = "slave_q2a"; + if (pcie->cfg->has_tbu_clk) + res->clks[idx++].id = "tbu"; + if (pcie->cfg->has_ddrss_sf_tbu_clk) + res->clks[idx++].id = "ddrss_sf_tbu"; + if (pcie->cfg->has_aggre0_clk) + res->clks[idx++].id = "aggre0"; + if (pcie->cfg->has_aggre1_clk) + res->clks[idx++].id = "aggre1"; + + res->num_clks = idx; ret = devm_clk_bulk_get(dev, res->num_clks, res->clks); if (ret < 0) @@ -1236,6 +1244,9 @@ static int qcom_pcie_init_2_7_0(struct qcom_pcie *pcie) goto err_disable_clocks; } + /* Wait for reset to complete, required on SM8450 */ + usleep_range(1000, 1500); + /* configure PCIe to RC mode */ writel(DEVICE_TYPE_RC, pcie->parf + PCIE20_PARF_DEVICE_TYPE); @@ -1509,15 +1520,33 @@ static const struct qcom_pcie_cfg ipq4019_cfg = { static const struct qcom_pcie_cfg sdm845_cfg = { .ops = &ops_2_7_0, + .has_tbu_clk = true, }; static const struct qcom_pcie_cfg sm8250_cfg = { + .ops = &ops_1_9_0, + .has_tbu_clk = true, + .has_ddrss_sf_tbu_clk = true, +}; + +static const struct qcom_pcie_cfg sm8450_pcie0_cfg = { .ops = &ops_1_9_0, .has_ddrss_sf_tbu_clk = true, + .pipe_clk_need_muxing = true, + .has_aggre0_clk = true, + .has_aggre1_clk = true, +}; + +static const struct qcom_pcie_cfg sm8450_pcie1_cfg = { + .ops = &ops_1_9_0, + .has_ddrss_sf_tbu_clk = true, + .pipe_clk_need_muxing = true, + .has_aggre1_clk = true, }; static const struct qcom_pcie_cfg sc7280_cfg = { .ops = &ops_1_9_0, + .has_tbu_clk = true, .pipe_clk_need_muxing = true, }; @@ -1628,6 +1657,8 @@ static const struct of_device_id qcom_pcie_match[] = { { .compatible = "qcom,pcie-sdm845", .data = &sdm845_cfg }, { .compatible = "qcom,pcie-sm8250", .data = &sm8250_cfg }, { .compatible = "qcom,pcie-sc8180x", .data = &sm8250_cfg }, + { .compatible = "qcom,pcie-sm8450-pcie0", .data = &sm8450_pcie0_cfg }, + { .compatible = "qcom,pcie-sm8450-pcie1", .data = &sm8450_pcie1_cfg }, { .compatible = "qcom,pcie-sc7280", .data = &sc7280_cfg }, { } };