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Diffstat (limited to 'target/linux/bcm53xx/patches-4.4/070-0001-phy-bcm-ns-usb2-new-driver-for-USB-2.0-PHY-on-Norths.patch')
-rw-r--r--target/linux/bcm53xx/patches-4.4/070-0001-phy-bcm-ns-usb2-new-driver-for-USB-2.0-PHY-on-Norths.patch252
1 files changed, 0 insertions, 252 deletions
diff --git a/target/linux/bcm53xx/patches-4.4/070-0001-phy-bcm-ns-usb2-new-driver-for-USB-2.0-PHY-on-Norths.patch b/target/linux/bcm53xx/patches-4.4/070-0001-phy-bcm-ns-usb2-new-driver-for-USB-2.0-PHY-on-Norths.patch
deleted file mode 100644
index c12cdb1861..0000000000
--- a/target/linux/bcm53xx/patches-4.4/070-0001-phy-bcm-ns-usb2-new-driver-for-USB-2.0-PHY-on-Norths.patch
+++ /dev/null
@@ -1,252 +0,0 @@
-From d3feb406733544dbf0e239ef945a09decdceac88 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
-Date: Thu, 14 Apr 2016 11:37:43 +0200
-Subject: [PATCH] phy: bcm-ns-usb2: new driver for USB 2.0 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 an EHCI controller driver.
-There are (just a few) registers being defined in bcma header. It's
-because DMU/CRU registers will be also needed in other drivers. We will
-need them e.g. in PCIe controller/PHY driver and at some point probably
-in clock driver for BCM53573 chipset. By using include/linux/bcma/ we
-avoid code duplication.
-
-Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
-Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
----
- .../devicetree/bindings/phy/bcm-ns-usb2-phy.txt | 21 ++++
- drivers/phy/Kconfig | 9 ++
- drivers/phy/Makefile | 1 +
- drivers/phy/phy-bcm-ns-usb2.c | 137 +++++++++++++++++++++
- include/linux/bcma/bcma.h | 1 +
- include/linux/bcma/bcma_driver_arm_c9.h | 15 +++
- 6 files changed, 184 insertions(+)
- create mode 100644 Documentation/devicetree/bindings/phy/bcm-ns-usb2-phy.txt
- create mode 100644 drivers/phy/phy-bcm-ns-usb2.c
- create mode 100644 include/linux/bcma/bcma_driver_arm_c9.h
-
---- /dev/null
-+++ b/Documentation/devicetree/bindings/phy/bcm-ns-usb2-phy.txt
-@@ -0,0 +1,21 @@
-+Driver for Broadcom Northstar USB 2.0 PHY
-+
-+Required properties:
-+- compatible: brcm,ns-usb2-phy
-+- reg: iomem address range of DMU (Device Management Unit)
-+- reg-names: "dmu", the only needed & supported reg right now
-+- clocks: USB PHY reference clock
-+- clock-names: "phy-ref-clk", the only needed & supported clock right now
-+
-+To initialize USB 2.0 PHY driver needs to setup PLL correctly. To do this it
-+requires passing phandle to the USB PHY reference clock.
-+
-+Example:
-+ usb2-phy {
-+ compatible = "brcm,ns-usb2-phy";
-+ reg = <0x1800c000 0x1000>;
-+ reg-names = "dmu";
-+ #phy-cells = <0>;
-+ clocks = <&genpll BCM_NSP_GENPLL_USB_PHY_REF_CLK>;
-+ clock-names = "phy-ref-clk";
-+ };
---- a/drivers/phy/Kconfig
-+++ b/drivers/phy/Kconfig
-@@ -15,6 +15,15 @@ config GENERIC_PHY
- phy users can obtain reference to the PHY. All the users of this
- framework should select this config.
-
-+config PHY_BCM_NS_USB2
-+ tristate "Broadcom Northstar USB 2.0 PHY Driver"
-+ depends on ARCH_BCM_IPROC || COMPILE_TEST
-+ depends on HAS_IOMEM && OF
-+ select GENERIC_PHY
-+ help
-+ Enable this to support Broadcom USB 2.0 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
-@@ -3,6 +3,7 @@
- #
-
- obj-$(CONFIG_GENERIC_PHY) += phy-core.o
-+obj-$(CONFIG_PHY_BCM_NS_USB2) += phy-bcm-ns-usb2.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-usb2.c
-@@ -0,0 +1,137 @@
-+/*
-+ * Broadcom Northstar USB 2.0 PHY Driver
-+ *
-+ * Copyright (C) 2016 Rafał Miłecki <zajec5@gmail.com>
-+ *
-+ * 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/clk.h>
-+#include <linux/delay.h>
-+#include <linux/err.h>
-+#include <linux/module.h>
-+#include <linux/of_address.h>
-+#include <linux/of_platform.h>
-+#include <linux/phy/phy.h>
-+#include <linux/platform_device.h>
-+#include <linux/slab.h>
-+
-+struct bcm_ns_usb2 {
-+ struct device *dev;
-+ struct clk *ref_clk;
-+ struct phy *phy;
-+ void __iomem *dmu;
-+};
-+
-+static int bcm_ns_usb2_phy_init(struct phy *phy)
-+{
-+ struct bcm_ns_usb2 *usb2 = phy_get_drvdata(phy);
-+ struct device *dev = usb2->dev;
-+ void __iomem *dmu = usb2->dmu;
-+ u32 ref_clk_rate, usb2ctl, usb_pll_ndiv, usb_pll_pdiv;
-+ int err = 0;
-+
-+ err = clk_prepare_enable(usb2->ref_clk);
-+ if (err < 0) {
-+ dev_err(dev, "Failed to prepare ref clock: %d\n", err);
-+ goto err_out;
-+ }
-+
-+ ref_clk_rate = clk_get_rate(usb2->ref_clk);
-+ if (!ref_clk_rate) {
-+ dev_err(dev, "Failed to get ref clock rate\n");
-+ err = -EINVAL;
-+ goto err_clk_off;
-+ }
-+
-+ usb2ctl = readl(dmu + BCMA_DMU_CRU_USB2_CONTROL);
-+
-+ if (usb2ctl & BCMA_DMU_CRU_USB2_CONTROL_USB_PLL_PDIV_MASK) {
-+ usb_pll_pdiv = usb2ctl;
-+ usb_pll_pdiv &= BCMA_DMU_CRU_USB2_CONTROL_USB_PLL_PDIV_MASK;
-+ usb_pll_pdiv >>= BCMA_DMU_CRU_USB2_CONTROL_USB_PLL_PDIV_SHIFT;
-+ } else {
-+ usb_pll_pdiv = 1 << 3;
-+ }
-+
-+ /* Calculate ndiv based on a solid 1920 MHz that is for USB2 PHY */
-+ usb_pll_ndiv = (1920000000 * usb_pll_pdiv) / ref_clk_rate;
-+
-+ /* Unlock DMU PLL settings with some magic value */
-+ writel(0x0000ea68, dmu + BCMA_DMU_CRU_CLKSET_KEY);
-+
-+ /* Write USB 2.0 PLL control setting */
-+ usb2ctl &= ~BCMA_DMU_CRU_USB2_CONTROL_USB_PLL_NDIV_MASK;
-+ usb2ctl |= usb_pll_ndiv << BCMA_DMU_CRU_USB2_CONTROL_USB_PLL_NDIV_SHIFT;
-+ writel(usb2ctl, dmu + BCMA_DMU_CRU_USB2_CONTROL);
-+
-+ /* Lock DMU PLL settings */
-+ writel(0x00000000, dmu + BCMA_DMU_CRU_CLKSET_KEY);
-+
-+err_clk_off:
-+ clk_disable_unprepare(usb2->ref_clk);
-+err_out:
-+ return err;
-+}
-+
-+static const struct phy_ops ops = {
-+ .init = bcm_ns_usb2_phy_init,
-+ .owner = THIS_MODULE,
-+};
-+
-+static int bcm_ns_usb2_probe(struct platform_device *pdev)
-+{
-+ struct device *dev = &pdev->dev;
-+ struct bcm_ns_usb2 *usb2;
-+ struct resource *res;
-+ struct phy_provider *phy_provider;
-+
-+ usb2 = devm_kzalloc(&pdev->dev, sizeof(*usb2), GFP_KERNEL);
-+ if (!usb2)
-+ return -ENOMEM;
-+ usb2->dev = dev;
-+
-+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dmu");
-+ usb2->dmu = devm_ioremap_resource(dev, res);
-+ if (IS_ERR(usb2->dmu)) {
-+ dev_err(dev, "Failed to map DMU regs\n");
-+ return PTR_ERR(usb2->dmu);
-+ }
-+
-+ usb2->ref_clk = devm_clk_get(dev, "phy-ref-clk");
-+ if (IS_ERR(usb2->ref_clk)) {
-+ dev_err(dev, "Clock not defined\n");
-+ return PTR_ERR(usb2->ref_clk);
-+ }
-+
-+ usb2->phy = devm_phy_create(dev, NULL, &ops);
-+ if (IS_ERR(dev))
-+ return PTR_ERR(dev);
-+
-+ phy_set_drvdata(usb2->phy, usb2);
-+ platform_set_drvdata(pdev, usb2);
-+
-+ phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
-+ return PTR_ERR_OR_ZERO(phy_provider);
-+}
-+
-+static const struct of_device_id bcm_ns_usb2_id_table[] = {
-+ { .compatible = "brcm,ns-usb2-phy", },
-+ {},
-+};
-+MODULE_DEVICE_TABLE(of, bcm_ns_usb2_id_table);
-+
-+static struct platform_driver bcm_ns_usb2_driver = {
-+ .probe = bcm_ns_usb2_probe,
-+ .driver = {
-+ .name = "bcm_ns_usb2",
-+ .of_match_table = bcm_ns_usb2_id_table,
-+ },
-+};
-+module_platform_driver(bcm_ns_usb2_driver);
-+
-+MODULE_LICENSE("GPL v2");
---- a/include/linux/bcma/bcma.h
-+++ b/include/linux/bcma/bcma.h
-@@ -4,6 +4,7 @@
- #include <linux/pci.h>
- #include <linux/mod_devicetable.h>
-
-+#include <linux/bcma/bcma_driver_arm_c9.h>
- #include <linux/bcma/bcma_driver_chipcommon.h>
- #include <linux/bcma/bcma_driver_pci.h>
- #include <linux/bcma/bcma_driver_pcie2.h>
---- /dev/null
-+++ b/include/linux/bcma/bcma_driver_arm_c9.h
-@@ -0,0 +1,15 @@
-+#ifndef LINUX_BCMA_DRIVER_ARM_C9_H_
-+#define LINUX_BCMA_DRIVER_ARM_C9_H_
-+
-+/* DMU (Device Management Unit) */
-+#define BCMA_DMU_CRU_USB2_CONTROL 0x0164
-+#define BCMA_DMU_CRU_USB2_CONTROL_USB_PLL_NDIV_MASK 0x00000FFC
-+#define BCMA_DMU_CRU_USB2_CONTROL_USB_PLL_NDIV_SHIFT 2
-+#define BCMA_DMU_CRU_USB2_CONTROL_USB_PLL_PDIV_MASK 0x00007000
-+#define BCMA_DMU_CRU_USB2_CONTROL_USB_PLL_PDIV_SHIFT 12
-+#define BCMA_DMU_CRU_CLKSET_KEY 0x0180
-+#define BCMA_DMU_CRU_STRAPS_CTRL 0x02A0
-+#define BCMA_DMU_CRU_STRAPS_CTRL_USB3 0x00000010
-+#define BCMA_DMU_CRU_STRAPS_CTRL_4BYTE 0x00008000
-+
-+#endif /* LINUX_BCMA_DRIVER_ARM_C9_H_ */
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-06 05:29:31 +0000