diff options
Diffstat (limited to 'target/linux/mediatek/patches-5.4/0992-PCI-mediatek-Use-regmap-to-get-shared-pcie-cfg-base.patch')
| -rwxr-xr-x | target/linux/mediatek/patches-5.4/0992-PCI-mediatek-Use-regmap-to-get-shared-pcie-cfg-base.patch | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches-5.4/0992-PCI-mediatek-Use-regmap-to-get-shared-pcie-cfg-base.patch b/target/linux/mediatek/patches-5.4/0992-PCI-mediatek-Use-regmap-to-get-shared-pcie-cfg-base.patch new file mode 100755 index 0000000000..e773e2e676 --- /dev/null +++ b/target/linux/mediatek/patches-5.4/0992-PCI-mediatek-Use-regmap-to-get-shared-pcie-cfg-base.patch @@ -0,0 +1,219 @@ +From patchwork Thu May 28 06:16:46 2020 +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +X-Patchwork-Submitter: Chuanjia Liu <chuanjia.liu@mediatek.com> +X-Patchwork-Id: 11574781 +Return-Path: + <SRS0=ftSA=7K=lists.infradead.org=linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@kernel.org> +Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org + [172.30.200.123]) + by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0A99B60D + for <patchwork-linux-mediatek@patchwork.kernel.org>; + Thu, 28 May 2020 06:19:04 +0000 (UTC) +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 mail.kernel.org (Postfix) with ESMTPS id DCC99208FE + for <patchwork-linux-mediatek@patchwork.kernel.org>; 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Thu, 28 May 2020 14:18:49 +0800 +From: <chuanjia.liu@mediatek.com> +To: <robh+dt@kernel.org>, <ryder.lee@mediatek.com>, <matthias.bgg@gmail.com> +Subject: [PATCH v2 2/4] PCI: mediatek: Use regmap to get shared pcie-cfg base +Date: Thu, 28 May 2020 14:16:46 +0800 +Message-ID: <20200528061648.32078-3-chuanjia.liu@mediatek.com> +X-Mailer: git-send-email 2.18.0 +In-Reply-To: <20200528061648.32078-1-chuanjia.liu@mediatek.com> +References: <20200528061648.32078-1-chuanjia.liu@mediatek.com> +MIME-Version: 1.0 +X-MTK: N +X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 +X-CRM114-CacheID: sfid-20200527_231859_251275_BED2B1E2 +X-CRM114-Status: GOOD ( 11.62 ) +X-Spam-Score: -0.2 (/) +X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: + Content analysis details: (-0.2 points) + pts rule name description + ---- ---------------------- + -------------------------------------------------- + -0.0 SPF_PASS SPF: sender matches SPF record + 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record + 0.0 MIME_BASE64_TEXT RAW: Message text disguised using base64 + encoding + -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from + author's domain + 0.1 DKIM_SIGNED Message has a DKIM or DK signature, + not necessarily + valid + -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature + -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from + envelope-from domain + 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay + lines +X-BeenThere: linux-mediatek@lists.infradead.org +X-Mailman-Version: 2.1.29 +Precedence: list +List-Id: <linux-mediatek.lists.infradead.org> +List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-mediatek>, + <mailto:linux-mediatek-request@lists.infradead.org?subject=unsubscribe> +List-Archive: <http://lists.infradead.org/pipermail/linux-mediatek/> +List-Post: <mailto:linux-mediatek@lists.infradead.org> +List-Help: <mailto:linux-mediatek-request@lists.infradead.org?subject=help> +List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-mediatek>, + <mailto:linux-mediatek-request@lists.infradead.org?subject=subscribe> +Cc: devicetree@vger.kernel.org, lorenzo.pieralisi@arm.com, + srv_heupstream@mediatek.com, "chuanjia.liu" <Chuanjia.Liu@mediatek.com>, + linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, + jianjun.wang@mediatek.com, linux-mediatek@lists.infradead.org, + yong.wu@mediatek.com, bhelgaas@google.com, + linux-arm-kernel@lists.infradead.org, amurray@thegoodpenguin.co.uk +Sender: "Linux-mediatek" <linux-mediatek-bounces@lists.infradead.org> +Errors-To: + linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org + +From: "chuanjia.liu" <Chuanjia.Liu@mediatek.com> + +Use regmap to get shared pcie-cfg base and change +the method to get pcie irq. + +Signed-off-by: chuanjia.liu <Chuanjia.Liu@mediatek.com> +--- + drivers/pci/controller/pcie-mediatek.c | 25 ++++++++++++++++++------- + 1 file changed, 18 insertions(+), 7 deletions(-) + +diff --git a/drivers/pci/controller/pcie-mediatek.c b/drivers/pci/controller/pcie-mediatek.c +index cb982891b22b..2268d6073eb6 100644 +--- a/drivers/pci/controller/pcie-mediatek.c ++++ b/drivers/pci/controller/pcie-mediatek.c +@@ -14,6 +14,7 @@ + #include <linux/irqchip/chained_irq.h> + #include <linux/irqdomain.h> + #include <linux/kernel.h> ++#include <linux/mfd/syscon.h> + #include <linux/msi.h> + #include <linux/module.h> + #include <linux/of_address.h> +@@ -23,6 +24,7 @@ + #include <linux/phy/phy.h> + #include <linux/platform_device.h> + #include <linux/pm_runtime.h> ++#include <linux/regmap.h> + #include <linux/reset.h> + + #include "../pci.h" +@@ -205,6 +207,7 @@ struct mtk_pcie_port { + * struct mtk_pcie - PCIe host information + * @dev: pointer to PCIe device + * @base: IO mapped register base ++ * @cfg: IO mapped register map for PCIe config + * @free_ck: free-run reference clock + * @mem: non-prefetchable memory resource + * @ports: pointer to PCIe port information +@@ -214,6 +217,7 @@ struct mtk_pcie_port { + struct mtk_pcie { + struct device *dev; + void __iomem *base; ++ struct regmap *cfg; + struct clk *free_ck; + + struct list_head ports; +@@ -650,7 +654,7 @@ static int mtk_pcie_setup_irq(struct mtk_pcie_port *port, + return err; + } + +- port->irq = platform_get_irq(pdev, port->slot); ++ port->irq = platform_get_irq_byname(pdev, "pcie_irq"); + irq_set_chained_handler_and_data(port->irq, + mtk_pcie_intr_handler, port); + +@@ -673,12 +677,11 @@ static int mtk_pcie_startup_port_v2(struct mtk_pcie_port *port) + if (!mem) + return -EINVAL; + +- /* MT7622 platforms need to enable LTSSM and ASPM from PCIe subsys */ +- if (pcie->base) { +- val = readl(pcie->base + PCIE_SYS_CFG_V2); +- val |= PCIE_CSR_LTSSM_EN(port->slot) | +- PCIE_CSR_ASPM_L1_EN(port->slot); +- writel(val, pcie->base + PCIE_SYS_CFG_V2); ++ /* MT7622/MT7629 platforms need to enable LTSSM and ASPM. */ ++ if (pcie->cfg) { ++ val = PCIE_CSR_LTSSM_EN(port->slot) | ++ PCIE_CSR_ASPM_L1_EN(port->slot); ++ regmap_update_bits(pcie->cfg, PCIE_SYS_CFG_V2, val, val); + } + + /* Assert all reset signals */ +@@ -984,6 +987,7 @@ static int mtk_pcie_subsys_powerup(struct mtk_pcie *pcie) + struct device *dev = pcie->dev; + struct platform_device *pdev = to_platform_device(dev); + struct resource *regs; ++ struct device_node *cfg_node; + int err; + + /* get shared registers, which are optional */ +@@ -996,6 +1000,13 @@ static int mtk_pcie_subsys_powerup(struct mtk_pcie *pcie) + } + } + ++ cfg_node = of_parse_phandle(dev->of_node, "mediatek,pcie-cfg", 0); ++ if (cfg_node) { ++ pcie->cfg = syscon_node_to_regmap(cfg_node); ++ if (IS_ERR(pcie->cfg)) ++ return PTR_ERR(pcie->cfg); ++ } ++ + pcie->free_ck = devm_clk_get(dev, "free_ck"); + if (IS_ERR(pcie->free_ck)) { + if (PTR_ERR(pcie->free_ck) == -EPROBE_DEFER) |