* [PATCH v4 1/2] dt-bindings: PCI: Add UniPhier PCIe endpoint controller description
2020-05-14 12:03 [PATCH v4 0/2] PCI: Add new UniPhier PCIe endpoint driver Kunihiko Hayashi
@ 2020-05-14 12:03 ` Kunihiko Hayashi
2020-05-26 13:34 ` Lorenzo Pieralisi
2020-05-28 15:19 ` Rob Herring
2020-05-14 12:03 ` [PATCH v4 2/2] PCI: uniphier: Add Socionext UniPhier Pro5 PCIe endpoint controller driver Kunihiko Hayashi
2020-05-28 16:46 ` [PATCH v4 0/2] PCI: Add new UniPhier PCIe endpoint driver Lorenzo Pieralisi
2 siblings, 2 replies; 7+ messages in thread
From: Kunihiko Hayashi @ 2020-05-14 12:03 UTC (permalink / raw)
To: Bjorn Helgaas, Lorenzo Pieralisi, Rob Herring, Masahiro Yamada
Cc: linux-pci, devicetree, linux-arm-kernel, linux-kernel,
Masami Hiramatsu, Jassi Brar, Kunihiko Hayashi
Add DT bindings for PCIe controller implemented in UniPhier SoCs
when configured in endpoint mode. This controller is based on
the DesignWare PCIe core.
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
---
.../bindings/pci/socionext,uniphier-pcie-ep.yaml | 92 ++++++++++++++++++++++
MAINTAINERS | 2 +-
2 files changed, 93 insertions(+), 1 deletion(-)
create mode 100644 Documentation/devicetree/bindings/pci/socionext,uniphier-pcie-ep.yaml
diff --git a/Documentation/devicetree/bindings/pci/socionext,uniphier-pcie-ep.yaml b/Documentation/devicetree/bindings/pci/socionext,uniphier-pcie-ep.yaml
new file mode 100644
index 0000000..f0558b9
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/socionext,uniphier-pcie-ep.yaml
@@ -0,0 +1,92 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/socionext,uniphier-pcie-ep.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Socionext UniPhier PCIe endpoint controller
+
+description: |
+ UniPhier PCIe endpoint controller is based on the Synopsys DesignWare
+ PCI core. It shares common features with the PCIe DesignWare core and
+ inherits common properties defined in
+ Documentation/devicetree/bindings/pci/designware-pcie.txt.
+
+maintainers:
+ - Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
+
+allOf:
+ - $ref: "pci-ep.yaml#"
+
+properties:
+ compatible:
+ const: socionext,uniphier-pro5-pcie-ep
+
+ reg:
+ maxItems: 4
+
+ reg-names:
+ items:
+ - const: dbi
+ - const: dbi2
+ - const: link
+ - const: addr_space
+
+ clocks:
+ maxItems: 2
+
+ clock-names:
+ items:
+ - const: gio
+ - const: link
+
+ resets:
+ maxItems: 2
+
+ reset-names:
+ items:
+ - const: gio
+ - const: link
+
+ num-ib-windows:
+ const: 16
+
+ num-ob-windows:
+ const: 16
+
+ num-lanes: true
+
+ phys:
+ maxItems: 1
+
+ phy-names:
+ const: pcie-phy
+
+required:
+ - compatible
+ - reg
+ - reg-names
+ - clocks
+ - clock-names
+ - resets
+ - reset-names
+
+additionalProperties: false
+
+examples:
+ - |
+ pcie_ep: pcie-ep@66000000 {
+ compatible = "socionext,uniphier-pro5-pcie-ep";
+ reg-names = "dbi", "dbi2", "link", "addr_space";
+ reg = <0x66000000 0x1000>, <0x66001000 0x1000>,
+ <0x66010000 0x10000>, <0x67000000 0x400000>;
+ clock-names = "gio", "link";
+ clocks = <&sys_clk 12>, <&sys_clk 24>;
+ reset-names = "gio", "link";
+ resets = <&sys_rst 12>, <&sys_rst 24>;
+ num-ib-windows = <16>;
+ num-ob-windows = <16>;
+ num-lanes = <4>;
+ phy-names = "pcie-phy";
+ phys = <&pcie_phy>;
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index 92657a1..7f26748 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -13211,7 +13211,7 @@ PCIE DRIVER FOR SOCIONEXT UNIPHIER
M: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
L: linux-pci@vger.kernel.org
S: Maintained
-F: Documentation/devicetree/bindings/pci/uniphier-pcie.txt
+F: Documentation/devicetree/bindings/pci/uniphier-pcie*
F: drivers/pci/controller/dwc/pcie-uniphier.c
PCIE DRIVER FOR ST SPEAR13XX
--
2.7.4
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH v4 2/2] PCI: uniphier: Add Socionext UniPhier Pro5 PCIe endpoint controller driver
2020-05-14 12:03 [PATCH v4 0/2] PCI: Add new UniPhier PCIe endpoint driver Kunihiko Hayashi
2020-05-14 12:03 ` [PATCH v4 1/2] dt-bindings: PCI: Add UniPhier PCIe endpoint controller description Kunihiko Hayashi
@ 2020-05-14 12:03 ` Kunihiko Hayashi
2020-05-20 23:06 ` Rob Herring
2020-05-28 16:46 ` [PATCH v4 0/2] PCI: Add new UniPhier PCIe endpoint driver Lorenzo Pieralisi
2 siblings, 1 reply; 7+ messages in thread
From: Kunihiko Hayashi @ 2020-05-14 12:03 UTC (permalink / raw)
To: Bjorn Helgaas, Lorenzo Pieralisi, Rob Herring, Masahiro Yamada
Cc: linux-pci, devicetree, linux-arm-kernel, linux-kernel,
Masami Hiramatsu, Jassi Brar, Kunihiko Hayashi
Add driver for the Socionext UniPhier Pro5 SoC endpoint controller.
This controller is based on the DesignWare PCIe core.
And add "host" to existing controller descriontions for the host controller
in Kconfig.
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
---
MAINTAINERS | 2 +-
drivers/pci/controller/dwc/Kconfig | 13 +-
drivers/pci/controller/dwc/Makefile | 1 +
drivers/pci/controller/dwc/pcie-uniphier-ep.c | 383 ++++++++++++++++++++++++++
4 files changed, 396 insertions(+), 3 deletions(-)
create mode 100644 drivers/pci/controller/dwc/pcie-uniphier-ep.c
diff --git a/MAINTAINERS b/MAINTAINERS
index 7f26748..b5ef0e7 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -13212,7 +13212,7 @@ M: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
L: linux-pci@vger.kernel.org
S: Maintained
F: Documentation/devicetree/bindings/pci/uniphier-pcie*
-F: drivers/pci/controller/dwc/pcie-uniphier.c
+F: drivers/pci/controller/dwc/pcie-uniphier*
PCIE DRIVER FOR ST SPEAR13XX
M: Pratyush Anand <pratyush.anand@gmail.com>
diff --git a/drivers/pci/controller/dwc/Kconfig b/drivers/pci/controller/dwc/Kconfig
index ce13fd6..43a29f7 100644
--- a/drivers/pci/controller/dwc/Kconfig
+++ b/drivers/pci/controller/dwc/Kconfig
@@ -280,15 +280,24 @@ config PCIE_TEGRA194_EP
selected. This uses the DesignWare core.
config PCIE_UNIPHIER
- bool "Socionext UniPhier PCIe controllers"
+ bool "Socionext UniPhier PCIe host controllers"
depends on ARCH_UNIPHIER || COMPILE_TEST
depends on OF && HAS_IOMEM
depends on PCI_MSI_IRQ_DOMAIN
select PCIE_DW_HOST
help
- Say Y here if you want PCIe controller support on UniPhier SoCs.
+ Say Y here if you want PCIe host controller support on UniPhier SoCs.
This driver supports LD20 and PXs3 SoCs.
+config PCIE_UNIPHIER_EP
+ bool "Socionext UniPhier PCIe endpoint controllers"
+ depends on ARCH_UNIPHIER || COMPILE_TEST
+ depends on OF && HAS_IOMEM
+ select PCIE_DW_EP
+ help
+ Say Y here if you want PCIe endpoint controller support on
+ UniPhier SoCs. This driver supports Pro5 SoC.
+
config PCIE_AL
bool "Amazon Annapurna Labs PCIe controller"
depends on OF && (ARM64 || COMPILE_TEST)
diff --git a/drivers/pci/controller/dwc/Makefile b/drivers/pci/controller/dwc/Makefile
index 8a637cf..a751553 100644
--- a/drivers/pci/controller/dwc/Makefile
+++ b/drivers/pci/controller/dwc/Makefile
@@ -19,6 +19,7 @@ obj-$(CONFIG_PCIE_HISI_STB) += pcie-histb.o
obj-$(CONFIG_PCI_MESON) += pci-meson.o
obj-$(CONFIG_PCIE_TEGRA194) += pcie-tegra194.o
obj-$(CONFIG_PCIE_UNIPHIER) += pcie-uniphier.o
+obj-$(CONFIG_PCIE_UNIPHIER_EP) += pcie-uniphier-ep.o
# The following drivers are for devices that use the generic ACPI
# pci_root.c driver but don't support standard ECAM config access.
diff --git a/drivers/pci/controller/dwc/pcie-uniphier-ep.c b/drivers/pci/controller/dwc/pcie-uniphier-ep.c
new file mode 100644
index 0000000..0f36aa3
--- /dev/null
+++ b/drivers/pci/controller/dwc/pcie-uniphier-ep.c
@@ -0,0 +1,383 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * PCIe endpoint controller driver for UniPhier SoCs
+ * Copyright 2018 Socionext Inc.
+ * Author: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
+ */
+
+#include <linux/bitops.h>
+#include <linux/bitfield.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/of_device.h>
+#include <linux/pci.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/reset.h>
+
+#include "pcie-designware.h"
+
+/* Link Glue registers */
+#define PCL_RSTCTRL0 0x0010
+#define PCL_RSTCTRL_AXI_REG BIT(3)
+#define PCL_RSTCTRL_AXI_SLAVE BIT(2)
+#define PCL_RSTCTRL_AXI_MASTER BIT(1)
+#define PCL_RSTCTRL_PIPE3 BIT(0)
+
+#define PCL_RSTCTRL1 0x0020
+#define PCL_RSTCTRL_PERST BIT(0)
+
+#define PCL_RSTCTRL2 0x0024
+#define PCL_RSTCTRL_PHY_RESET BIT(0)
+
+#define PCL_MODE 0x8000
+#define PCL_MODE_REGEN BIT(8)
+#define PCL_MODE_REGVAL BIT(0)
+
+#define PCL_APP_CLK_CTRL 0x8004
+#define PCL_APP_CLK_REQ BIT(0)
+
+#define PCL_APP_READY_CTRL 0x8008
+#define PCL_APP_LTSSM_ENABLE BIT(0)
+
+#define PCL_APP_MSI0 0x8040
+#define PCL_APP_VEN_MSI_TC_MASK GENMASK(10, 8)
+#define PCL_APP_VEN_MSI_VECTOR_MASK GENMASK(4, 0)
+
+#define PCL_APP_MSI1 0x8044
+#define PCL_APP_MSI_REQ BIT(0)
+
+#define PCL_APP_INTX 0x8074
+#define PCL_APP_INTX_SYS_INT BIT(0)
+
+/* assertion time of INTx in usec */
+#define PCL_INTX_WIDTH_USEC 30
+
+struct uniphier_pcie_ep_priv {
+ void __iomem *base;
+ struct dw_pcie pci;
+ struct clk *clk, *clk_gio;
+ struct reset_control *rst, *rst_gio;
+ struct phy *phy;
+ const struct pci_epc_features *features;
+};
+
+#define to_uniphier_pcie(x) dev_get_drvdata((x)->dev)
+
+static void uniphier_pcie_ltssm_enable(struct uniphier_pcie_ep_priv *priv,
+ bool enable)
+{
+ u32 val;
+
+ val = readl(priv->base + PCL_APP_READY_CTRL);
+ if (enable)
+ val |= PCL_APP_LTSSM_ENABLE;
+ else
+ val &= ~PCL_APP_LTSSM_ENABLE;
+ writel(val, priv->base + PCL_APP_READY_CTRL);
+}
+
+static void uniphier_pcie_phy_reset(struct uniphier_pcie_ep_priv *priv,
+ bool assert)
+{
+ u32 val;
+
+ val = readl(priv->base + PCL_RSTCTRL2);
+ if (assert)
+ val |= PCL_RSTCTRL_PHY_RESET;
+ else
+ val &= ~PCL_RSTCTRL_PHY_RESET;
+ writel(val, priv->base + PCL_RSTCTRL2);
+}
+
+static void uniphier_pcie_init_ep(struct uniphier_pcie_ep_priv *priv)
+{
+ u32 val;
+
+ /* set EP mode */
+ val = readl(priv->base + PCL_MODE);
+ val |= PCL_MODE_REGEN | PCL_MODE_REGVAL;
+ writel(val, priv->base + PCL_MODE);
+
+ /* clock request */
+ val = readl(priv->base + PCL_APP_CLK_CTRL);
+ val &= ~PCL_APP_CLK_REQ;
+ writel(val, priv->base + PCL_APP_CLK_CTRL);
+
+ /* deassert PIPE3 and AXI reset */
+ val = readl(priv->base + PCL_RSTCTRL0);
+ val |= PCL_RSTCTRL_AXI_REG | PCL_RSTCTRL_AXI_SLAVE
+ | PCL_RSTCTRL_AXI_MASTER | PCL_RSTCTRL_PIPE3;
+ writel(val, priv->base + PCL_RSTCTRL0);
+
+ uniphier_pcie_ltssm_enable(priv, false);
+
+ msleep(100);
+}
+
+static int uniphier_pcie_start_link(struct dw_pcie *pci)
+{
+ struct uniphier_pcie_ep_priv *priv = to_uniphier_pcie(pci);
+
+ uniphier_pcie_ltssm_enable(priv, true);
+
+ return 0;
+}
+
+static void uniphier_pcie_stop_link(struct dw_pcie *pci)
+{
+ struct uniphier_pcie_ep_priv *priv = to_uniphier_pcie(pci);
+
+ uniphier_pcie_ltssm_enable(priv, false);
+}
+
+static void uniphier_pcie_ep_init(struct dw_pcie_ep *ep)
+{
+ struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
+ enum pci_barno bar;
+
+ for (bar = BAR_0; bar <= BAR_5; bar++)
+ dw_pcie_ep_reset_bar(pci, bar);
+}
+
+static int uniphier_pcie_ep_raise_legacy_irq(struct dw_pcie_ep *ep)
+{
+ struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
+ struct uniphier_pcie_ep_priv *priv = to_uniphier_pcie(pci);
+ u32 val;
+
+ /*
+ * This makes pulse signal to send INTx to the RC, so this should
+ * be cleared as soon as possible. This sequence is covered with
+ * mutex in pci_epc_raise_irq().
+ */
+ /* assert INTx */
+ val = readl(priv->base + PCL_APP_INTX);
+ val |= PCL_APP_INTX_SYS_INT;
+ writel(val, priv->base + PCL_APP_INTX);
+
+ udelay(PCL_INTX_WIDTH_USEC);
+
+ /* deassert INTx */
+ val &= ~PCL_APP_INTX_SYS_INT;
+ writel(val, priv->base + PCL_APP_INTX);
+
+ return 0;
+}
+
+static int uniphier_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep,
+ u8 func_no, u16 interrupt_num)
+{
+ struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
+ struct uniphier_pcie_ep_priv *priv = to_uniphier_pcie(pci);
+ u32 val;
+
+ val = FIELD_PREP(PCL_APP_VEN_MSI_TC_MASK, func_no)
+ | FIELD_PREP(PCL_APP_VEN_MSI_VECTOR_MASK, interrupt_num - 1);
+ writel(val, priv->base + PCL_APP_MSI0);
+
+ val = readl(priv->base + PCL_APP_MSI1);
+ val |= PCL_APP_MSI_REQ;
+ writel(val, priv->base + PCL_APP_MSI1);
+
+ return 0;
+}
+
+static int uniphier_pcie_ep_raise_irq(struct dw_pcie_ep *ep, u8 func_no,
+ enum pci_epc_irq_type type,
+ u16 interrupt_num)
+{
+ struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
+
+ switch (type) {
+ case PCI_EPC_IRQ_LEGACY:
+ return uniphier_pcie_ep_raise_legacy_irq(ep);
+ case PCI_EPC_IRQ_MSI:
+ return uniphier_pcie_ep_raise_msi_irq(ep, func_no,
+ interrupt_num);
+ default:
+ dev_err(pci->dev, "UNKNOWN IRQ type (%d)\n", type);
+ }
+
+ return 0;
+}
+
+static const struct pci_epc_features*
+uniphier_pcie_get_features(struct dw_pcie_ep *ep)
+{
+ struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
+ struct uniphier_pcie_ep_priv *priv = to_uniphier_pcie(pci);
+
+ return priv->features;
+}
+
+static const struct dw_pcie_ep_ops uniphier_pcie_ep_ops = {
+ .ep_init = uniphier_pcie_ep_init,
+ .raise_irq = uniphier_pcie_ep_raise_irq,
+ .get_features = uniphier_pcie_get_features,
+};
+
+static int uniphier_add_pcie_ep(struct uniphier_pcie_ep_priv *priv,
+ struct platform_device *pdev)
+{
+ struct dw_pcie *pci = &priv->pci;
+ struct dw_pcie_ep *ep = &pci->ep;
+ struct device *dev = &pdev->dev;
+ struct resource *res;
+ int ret;
+
+ ep->ops = &uniphier_pcie_ep_ops;
+
+ pci->dbi_base2 = devm_platform_ioremap_resource_byname(pdev, "dbi2");
+ if (IS_ERR(pci->dbi_base2))
+ return PTR_ERR(pci->dbi_base2);
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "addr_space");
+ if (!res)
+ return -EINVAL;
+
+ ep->phys_base = res->start;
+ ep->addr_size = resource_size(res);
+
+ ret = dw_pcie_ep_init(ep);
+ if (ret)
+ dev_err(dev, "Failed to initialize endpoint (%d)\n", ret);
+
+ return ret;
+}
+
+static int uniphier_pcie_ep_enable(struct uniphier_pcie_ep_priv *priv)
+{
+ int ret;
+
+ ret = clk_prepare_enable(priv->clk);
+ if (ret)
+ return ret;
+
+ ret = clk_prepare_enable(priv->clk_gio);
+ if (ret)
+ goto out_clk_disable;
+
+ ret = reset_control_deassert(priv->rst);
+ if (ret)
+ goto out_clk_gio_disable;
+
+ ret = reset_control_deassert(priv->rst_gio);
+ if (ret)
+ goto out_rst_assert;
+
+ uniphier_pcie_init_ep(priv);
+
+ uniphier_pcie_phy_reset(priv, true);
+
+ ret = phy_init(priv->phy);
+ if (ret)
+ goto out_rst_gio_assert;
+
+ uniphier_pcie_phy_reset(priv, false);
+
+ return 0;
+
+out_rst_gio_assert:
+ reset_control_assert(priv->rst_gio);
+out_rst_assert:
+ reset_control_assert(priv->rst);
+out_clk_gio_disable:
+ clk_disable_unprepare(priv->clk_gio);
+out_clk_disable:
+ clk_disable_unprepare(priv->clk);
+
+ return ret;
+}
+
+static const struct dw_pcie_ops dw_pcie_ops = {
+ .start_link = uniphier_pcie_start_link,
+ .stop_link = uniphier_pcie_stop_link,
+};
+
+static int uniphier_pcie_ep_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct uniphier_pcie_ep_priv *priv;
+ struct resource *res;
+ int ret;
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->features = of_device_get_match_data(dev);
+ if (WARN_ON(!priv->features))
+ return -EINVAL;
+
+ priv->pci.dev = dev;
+ priv->pci.ops = &dw_pcie_ops;
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dbi");
+ priv->pci.dbi_base = devm_pci_remap_cfg_resource(dev, res);
+ if (IS_ERR(priv->pci.dbi_base))
+ return PTR_ERR(priv->pci.dbi_base);
+
+ priv->base = devm_platform_ioremap_resource_byname(pdev, "link");
+ if (IS_ERR(priv->base))
+ return PTR_ERR(priv->base);
+
+ priv->clk_gio = devm_clk_get(dev, "gio");
+ if (IS_ERR(priv->clk))
+ return PTR_ERR(priv->clk);
+
+ priv->rst_gio = devm_reset_control_get_shared(dev, "gio");
+ if (IS_ERR(priv->rst_gio))
+ return PTR_ERR(priv->rst_gio);
+
+ priv->clk = devm_clk_get(dev, "link");
+ if (IS_ERR(priv->clk))
+ return PTR_ERR(priv->clk);
+
+ priv->rst = devm_reset_control_get_shared(dev, "link");
+ if (IS_ERR(priv->rst))
+ return PTR_ERR(priv->rst);
+
+ priv->phy = devm_phy_optional_get(dev, "pcie-phy");
+ if (IS_ERR(priv->phy)) {
+ ret = PTR_ERR(priv->phy);
+ dev_err(dev, "Failed to get phy (%d)\n", ret);
+ return ret;
+ }
+
+ platform_set_drvdata(pdev, priv);
+
+ ret = uniphier_pcie_ep_enable(priv);
+ if (ret)
+ return ret;
+
+ return uniphier_add_pcie_ep(priv, pdev);
+}
+
+static const struct pci_epc_features uniphier_pro5_data = {
+ .linkup_notifier = false,
+ .msi_capable = true,
+ .msix_capable = false,
+ .align = 1 << 16,
+ .bar_fixed_64bit = BIT(BAR_0) | BIT(BAR_2) | BIT(BAR_4),
+ .reserved_bar = BIT(BAR_4),
+};
+
+static const struct of_device_id uniphier_pcie_ep_match[] = {
+ {
+ .compatible = "socionext,uniphier-pro5-pcie-ep",
+ .data = &uniphier_pro5_data,
+ },
+ { /* sentinel */ },
+};
+
+static struct platform_driver uniphier_pcie_ep_driver = {
+ .probe = uniphier_pcie_ep_probe,
+ .driver = {
+ .name = "uniphier-pcie-ep",
+ .of_match_table = uniphier_pcie_ep_match,
+ .suppress_bind_attrs = true,
+ },
+};
+builtin_platform_driver(uniphier_pcie_ep_driver);
--
2.7.4
^ permalink raw reply related [flat|nested] 7+ messages in thread* Re: [PATCH v4 0/2] PCI: Add new UniPhier PCIe endpoint driver
2020-05-14 12:03 [PATCH v4 0/2] PCI: Add new UniPhier PCIe endpoint driver Kunihiko Hayashi
2020-05-14 12:03 ` [PATCH v4 1/2] dt-bindings: PCI: Add UniPhier PCIe endpoint controller description Kunihiko Hayashi
2020-05-14 12:03 ` [PATCH v4 2/2] PCI: uniphier: Add Socionext UniPhier Pro5 PCIe endpoint controller driver Kunihiko Hayashi
@ 2020-05-28 16:46 ` Lorenzo Pieralisi
2 siblings, 0 replies; 7+ messages in thread
From: Lorenzo Pieralisi @ 2020-05-28 16:46 UTC (permalink / raw)
To: Kunihiko Hayashi
Cc: Bjorn Helgaas, Rob Herring, Masahiro Yamada, linux-pci,
devicetree, linux-arm-kernel, linux-kernel, Masami Hiramatsu,
Jassi Brar
On Thu, May 14, 2020 at 09:03:19PM +0900, Kunihiko Hayashi wrote:
> This series adds PCIe endpoint controller driver for Socionext UniPhier
> SoCs. This controller is based on the DesignWare PCIe core.
>
> This driver supports Pro5 SoC only, so Pro5 needs multiple clocks and
> resets in devicetree node.
>
> Changes since v3:
> - dt-bindings: Convert with dt-schema
> - Replace with devm_platform_ioremap_resource()
> - Add a commnet that mutex covers raising legacy IRQ
>
> Changes since v2:
> - dt-bindings: Add clock-names, reset-names, and fix example for Pro5
> - Remove 'is_legacy' indicating that the compatible is for legacy SoC
> - Use pci_epc_features instead of defining uniphier_soc_data
> - Remove redundant register read access
> - Clean up return code on uniphier_add_pcie_ep()
> - typo: intx -> INTx
>
> Changes since v1:
> - dt-bindings: Add Reviewed-by line
> - Fix register value to set EP mode
> - Add error message when failed to get phy
> - Replace INTx assertion time with macro
>
> Kunihiko Hayashi (2):
> dt-bindings: PCI: Add UniPhier PCIe endpoint controller description
> PCI: uniphier: Add Socionext UniPhier Pro5 PCIe endpoint controller
> driver
>
> .../bindings/pci/socionext,uniphier-pcie-ep.yaml | 92 +++++
> MAINTAINERS | 4 +-
> drivers/pci/controller/dwc/Kconfig | 13 +-
> drivers/pci/controller/dwc/Makefile | 1 +
> drivers/pci/controller/dwc/pcie-uniphier-ep.c | 383 +++++++++++++++++++++
> 5 files changed, 489 insertions(+), 4 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/pci/socionext,uniphier-pcie-ep.yaml
> create mode 100644 drivers/pci/controller/dwc/pcie-uniphier-ep.c
Applied to pci/dwc, thanks !
Lorenzo
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