diff options
Diffstat (limited to 'target/linux/bcm53xx/patches-4.4/071-0001-phy-bcm-ns-usb3-new-driver-for-USB-3.0-PHY-on-Norths.patch')
-rw-r--r-- | target/linux/bcm53xx/patches-4.4/071-0001-phy-bcm-ns-usb3-new-driver-for-USB-3.0-PHY-on-Norths.patch | 361 |
1 files changed, 0 insertions, 361 deletions
diff --git a/target/linux/bcm53xx/patches-4.4/071-0001-phy-bcm-ns-usb3-new-driver-for-USB-3.0-PHY-on-Norths.patch b/target/linux/bcm53xx/patches-4.4/071-0001-phy-bcm-ns-usb3-new-driver-for-USB-3.0-PHY-on-Norths.patch deleted file mode 100644 index ad34fc8..0000000 --- a/target/linux/bcm53xx/patches-4.4/071-0001-phy-bcm-ns-usb3-new-driver-for-USB-3.0-PHY-on-Norths.patch +++ /dev/null @@ -1,361 +0,0 @@ -From b8d7478ecfec51b3430f677da44e662d5ff12444 Mon Sep 17 00:00:00 2001 -From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl> -Date: Fri, 12 Aug 2016 00:28:03 +0200 -Subject: [PATCH] phy: bcm-ns-usb3: new driver for USB 3.0 PHY on Northstar -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -Northstar is a family of SoCs used in home routers. They have USB 2.0 -and 3.0 controllers with PHYs that need to be properly initialized. -This driver provides PHY init support in a generic way and can be bound -with XHCI controller driver. - -There aren't any public datasheets from Broadcom so we can't have nice -defines for all used bits. It means we just follow Broadcom's -initialization procedure using their magic values. We were quite lucky -actually that Broadcom put some comments in their SDK reference code -explaining what given writes are responsible for. - -Signed-off-by: Rafał Miłecki <rafal@milecki.pl> -Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> ---- - .../devicetree/bindings/phy/bcm-ns-usb3-phy.txt | 23 ++ - drivers/phy/Kconfig | 9 + - drivers/phy/Makefile | 1 + - drivers/phy/phy-bcm-ns-usb3.c | 274 +++++++++++++++++++++ - 4 files changed, 307 insertions(+) - create mode 100644 Documentation/devicetree/bindings/phy/bcm-ns-usb3-phy.txt - create mode 100644 drivers/phy/phy-bcm-ns-usb3.c - ---- /dev/null -+++ b/Documentation/devicetree/bindings/phy/bcm-ns-usb3-phy.txt -@@ -0,0 +1,23 @@ -+Driver for Broadcom Northstar USB 3.0 PHY -+ -+Required properties: -+ -+- compatible: one of: "brcm,ns-ax-usb3-phy", "brcm,ns-bx-usb3-phy". -+- reg: register mappings for DMP (Device Management Plugin) and ChipCommon B -+ MMI. -+- reg-names: "dmp" and "ccb-mii" -+ -+Initialization of USB 3.0 PHY depends on Northstar version. There are currently -+three known series: Ax, Bx and Cx. -+Known A0: BCM4707 rev 0 -+Known B0: BCM4707 rev 4, BCM53573 rev 2 -+Known B1: BCM4707 rev 6 -+Known C0: BCM47094 rev 0 -+ -+Example: -+ usb3-phy { -+ compatible = "brcm,ns-ax-usb3-phy"; -+ reg = <0x18105000 0x1000>, <0x18003000 0x1000>; -+ reg-names = "dmp", "ccb-mii"; -+ #phy-cells = <0>; -+ }; ---- a/drivers/phy/Kconfig -+++ b/drivers/phy/Kconfig -@@ -24,6 +24,15 @@ config PHY_BCM_NS_USB2 - Enable this to support Broadcom USB 2.0 PHY connected to the USB - controller on Northstar family. - -+config PHY_BCM_NS_USB3 -+ tristate "Broadcom Northstar USB 3.0 PHY Driver" -+ depends on ARCH_BCM_IPROC || COMPILE_TEST -+ depends on HAS_IOMEM && OF -+ select GENERIC_PHY -+ help -+ Enable this to support Broadcom USB 3.0 PHY connected to the USB -+ controller on Northstar family. -+ - config PHY_BERLIN_USB - tristate "Marvell Berlin USB PHY Driver" - depends on ARCH_BERLIN && RESET_CONTROLLER && HAS_IOMEM && OF ---- a/drivers/phy/Makefile -+++ b/drivers/phy/Makefile -@@ -4,6 +4,7 @@ - - obj-$(CONFIG_GENERIC_PHY) += phy-core.o - obj-$(CONFIG_PHY_BCM_NS_USB2) += phy-bcm-ns-usb2.o -+obj-$(CONFIG_PHY_BCM_NS_USB3) += phy-bcm-ns-usb3.o - obj-$(CONFIG_PHY_BERLIN_USB) += phy-berlin-usb.o - obj-$(CONFIG_PHY_BERLIN_SATA) += phy-berlin-sata.o - obj-$(CONFIG_PHY_DM816X_USB) += phy-dm816x-usb.o ---- /dev/null -+++ b/drivers/phy/phy-bcm-ns-usb3.c -@@ -0,0 +1,274 @@ -+/* -+ * Broadcom Northstar USB 3.0 PHY Driver -+ * -+ * Copyright (C) 2016 Rafał Miłecki <rafal@milecki.pl> -+ * -+ * All magic values used for initialization (and related comments) were obtained -+ * from Broadcom's SDK: -+ * Copyright (c) Broadcom Corp, 2012 -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ */ -+ -+#include <linux/bcma/bcma.h> -+#include <linux/delay.h> -+#include <linux/err.h> -+#include <linux/module.h> -+#include <linux/of_platform.h> -+#include <linux/platform_device.h> -+#include <linux/phy/phy.h> -+#include <linux/slab.h> -+ -+#define BCM_NS_USB3_MII_MNG_TIMEOUT_US 1000 /* usecs */ -+ -+enum bcm_ns_family { -+ BCM_NS_UNKNOWN, -+ BCM_NS_AX, -+ BCM_NS_BX, -+}; -+ -+struct bcm_ns_usb3 { -+ struct device *dev; -+ enum bcm_ns_family family; -+ void __iomem *dmp; -+ void __iomem *ccb_mii; -+ struct phy *phy; -+}; -+ -+static const struct of_device_id bcm_ns_usb3_id_table[] = { -+ { -+ .compatible = "brcm,ns-ax-usb3-phy", -+ .data = (int *)BCM_NS_AX, -+ }, -+ { -+ .compatible = "brcm,ns-bx-usb3-phy", -+ .data = (int *)BCM_NS_BX, -+ }, -+ {}, -+}; -+MODULE_DEVICE_TABLE(of, bcm_ns_usb3_id_table); -+ -+static int bcm_ns_usb3_wait_reg(struct bcm_ns_usb3 *usb3, void __iomem *addr, -+ u32 mask, u32 value, unsigned long timeout) -+{ -+ unsigned long deadline = jiffies + timeout; -+ u32 val; -+ -+ do { -+ val = readl(addr); -+ if ((val & mask) == value) -+ return 0; -+ cpu_relax(); -+ udelay(10); -+ } while (!time_after_eq(jiffies, deadline)); -+ -+ dev_err(usb3->dev, "Timeout waiting for register %p\n", addr); -+ -+ return -EBUSY; -+} -+ -+static inline int bcm_ns_usb3_mii_mng_wait_idle(struct bcm_ns_usb3 *usb3) -+{ -+ return bcm_ns_usb3_wait_reg(usb3, usb3->ccb_mii + BCMA_CCB_MII_MNG_CTL, -+ 0x0100, 0x0000, -+ usecs_to_jiffies(BCM_NS_USB3_MII_MNG_TIMEOUT_US)); -+} -+ -+static int bcm_ns_usb3_mii_mng_write32(struct bcm_ns_usb3 *usb3, u32 value) -+{ -+ int err; -+ -+ err = bcm_ns_usb3_mii_mng_wait_idle(usb3); -+ if (err < 0) { -+ dev_err(usb3->dev, "Couldn't write 0x%08x value\n", value); -+ return err; -+ } -+ -+ writel(value, usb3->ccb_mii + BCMA_CCB_MII_MNG_CMD_DATA); -+ -+ return 0; -+} -+ -+static int bcm_ns_usb3_phy_init_ns_bx(struct bcm_ns_usb3 *usb3) -+{ -+ int err; -+ -+ /* Enable MDIO. Setting MDCDIV as 26 */ -+ writel(0x0000009a, usb3->ccb_mii + BCMA_CCB_MII_MNG_CTL); -+ -+ /* Wait for MDIO? */ -+ udelay(2); -+ -+ /* USB3 PLL Block */ -+ err = bcm_ns_usb3_mii_mng_write32(usb3, 0x587e8000); -+ if (err < 0) -+ return err; -+ -+ /* Assert Ana_Pllseq start */ -+ bcm_ns_usb3_mii_mng_write32(usb3, 0x58061000); -+ -+ /* Assert CML Divider ratio to 26 */ -+ bcm_ns_usb3_mii_mng_write32(usb3, 0x582a6400); -+ -+ /* Asserting PLL Reset */ -+ bcm_ns_usb3_mii_mng_write32(usb3, 0x582ec000); -+ -+ /* Deaaserting PLL Reset */ -+ bcm_ns_usb3_mii_mng_write32(usb3, 0x582e8000); -+ -+ /* Waiting MII Mgt interface idle */ -+ bcm_ns_usb3_mii_mng_wait_idle(usb3); -+ -+ /* Deasserting USB3 system reset */ -+ writel(0, usb3->dmp + BCMA_RESET_CTL); -+ -+ /* PLL frequency monitor enable */ -+ bcm_ns_usb3_mii_mng_write32(usb3, 0x58069000); -+ -+ /* PIPE Block */ -+ bcm_ns_usb3_mii_mng_write32(usb3, 0x587e8060); -+ -+ /* CMPMAX & CMPMINTH setting */ -+ bcm_ns_usb3_mii_mng_write32(usb3, 0x580af30d); -+ -+ /* DEGLITCH MIN & MAX setting */ -+ bcm_ns_usb3_mii_mng_write32(usb3, 0x580e6302); -+ -+ /* TXPMD block */ -+ bcm_ns_usb3_mii_mng_write32(usb3, 0x587e8040); -+ -+ /* Enabling SSC */ -+ bcm_ns_usb3_mii_mng_write32(usb3, 0x58061003); -+ -+ /* Waiting MII Mgt interface idle */ -+ bcm_ns_usb3_mii_mng_wait_idle(usb3); -+ -+ return 0; -+} -+ -+static int bcm_ns_usb3_phy_init_ns_ax(struct bcm_ns_usb3 *usb3) -+{ -+ int err; -+ -+ /* Enable MDIO. Setting MDCDIV as 26 */ -+ writel(0x0000009a, usb3->ccb_mii + BCMA_CCB_MII_MNG_CTL); -+ -+ /* Wait for MDIO? */ -+ udelay(2); -+ -+ /* PLL30 block */ -+ err = bcm_ns_usb3_mii_mng_write32(usb3, 0x587e8000); -+ if (err < 0) -+ return err; -+ -+ bcm_ns_usb3_mii_mng_write32(usb3, 0x582a6400); -+ -+ bcm_ns_usb3_mii_mng_write32(usb3, 0x587e80e0); -+ -+ bcm_ns_usb3_mii_mng_write32(usb3, 0x580a009c); -+ -+ /* Enable SSC */ -+ bcm_ns_usb3_mii_mng_write32(usb3, 0x587e8040); -+ -+ bcm_ns_usb3_mii_mng_write32(usb3, 0x580a21d3); -+ -+ bcm_ns_usb3_mii_mng_write32(usb3, 0x58061003); -+ -+ /* Waiting MII Mgt interface idle */ -+ bcm_ns_usb3_mii_mng_wait_idle(usb3); -+ -+ /* Deasserting USB3 system reset */ -+ writel(0, usb3->dmp + BCMA_RESET_CTL); -+ -+ return 0; -+} -+ -+static int bcm_ns_usb3_phy_init(struct phy *phy) -+{ -+ struct bcm_ns_usb3 *usb3 = phy_get_drvdata(phy); -+ int err; -+ -+ /* Perform USB3 system soft reset */ -+ writel(BCMA_RESET_CTL_RESET, usb3->dmp + BCMA_RESET_CTL); -+ -+ switch (usb3->family) { -+ case BCM_NS_AX: -+ err = bcm_ns_usb3_phy_init_ns_ax(usb3); -+ break; -+ case BCM_NS_BX: -+ err = bcm_ns_usb3_phy_init_ns_bx(usb3); -+ break; -+ default: -+ WARN_ON(1); -+ err = -ENOTSUPP; -+ } -+ -+ return err; -+} -+ -+static const struct phy_ops ops = { -+ .init = bcm_ns_usb3_phy_init, -+ .owner = THIS_MODULE, -+}; -+ -+static int bcm_ns_usb3_probe(struct platform_device *pdev) -+{ -+ struct device *dev = &pdev->dev; -+ const struct of_device_id *of_id; -+ struct bcm_ns_usb3 *usb3; -+ struct resource *res; -+ struct phy_provider *phy_provider; -+ -+ usb3 = devm_kzalloc(dev, sizeof(*usb3), GFP_KERNEL); -+ if (!usb3) -+ return -ENOMEM; -+ -+ usb3->dev = dev; -+ -+ of_id = of_match_device(bcm_ns_usb3_id_table, dev); -+ if (!of_id) -+ return -EINVAL; -+ usb3->family = (enum bcm_ns_family)of_id->data; -+ -+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dmp"); -+ usb3->dmp = devm_ioremap_resource(dev, res); -+ if (IS_ERR(usb3->dmp)) { -+ dev_err(dev, "Failed to map DMP regs\n"); -+ return PTR_ERR(usb3->dmp); -+ } -+ -+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ccb-mii"); -+ usb3->ccb_mii = devm_ioremap_resource(dev, res); -+ if (IS_ERR(usb3->ccb_mii)) { -+ dev_err(dev, "Failed to map ChipCommon B MII regs\n"); -+ return PTR_ERR(usb3->ccb_mii); -+ } -+ -+ usb3->phy = devm_phy_create(dev, NULL, &ops); -+ if (IS_ERR(usb3->phy)) { -+ dev_err(dev, "Failed to create PHY\n"); -+ return PTR_ERR(usb3->phy); -+ } -+ -+ phy_set_drvdata(usb3->phy, usb3); -+ platform_set_drvdata(pdev, usb3); -+ -+ phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); -+ if (!IS_ERR(phy_provider)) -+ dev_info(dev, "Registered Broadcom Northstar USB 3.0 PHY driver\n"); -+ -+ return PTR_ERR_OR_ZERO(phy_provider); -+} -+ -+static struct platform_driver bcm_ns_usb3_driver = { -+ .probe = bcm_ns_usb3_probe, -+ .driver = { -+ .name = "bcm_ns_usb3", -+ .of_match_table = bcm_ns_usb3_id_table, -+ }, -+}; -+module_platform_driver(bcm_ns_usb3_driver); -+ -+MODULE_LICENSE("GPL v2"); |