phy: add driver for Qualcomm IPQ40xx USB PHY

Add a driver to setup the USB PHY-s on Qualcomm IPQ40xx series SoCs.
The driver sets up HS and SS phys.

Signed-off-by: Robert Marko <robert.marko@sartura.hr>
Cc: Luka Perkov <luka.perkov@sartura.hr>

diff --git a/MAINTAINERS b/MAINTAINERS
index fcad3e4..1ba7109 100644 (file)
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -240,6 +240,7 @@ F:  arch/arm/mach-ipq40xx/
 F:     include/dt-bindings/clock/qcom,ipq4019-gcc.h
 F:     include/dt-bindings/reset/qcom,ipq4019-reset.h
 F:     drivers/reset/reset-ipq4019.c
+F:     drivers/phy/phy-qcom-ipq4019-usb.c
 
 ARM MARVELL KIRKWOOD ARMADA-XP ARMADA-38X ARMADA-37XX ARMADA-7K/8K
 M:     Stefan Roese <sr@denx.de>

diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
index 9c77510..8da00a2 100644 (file)
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -125,6 +125,12 @@ config STI_USB_PHY
          used by USB2 and USB3 Host controllers available on
          STiH407 SoC families.
 
+config PHY_QCOM_IPQ4019_USB
+       tristate "Qualcomm IPQ4019 USB PHY driver"
+       depends on PHY && ARCH_IPQ40XX
+       help
+         Support for the USB PHY-s on Qualcomm IPQ40xx SoC-s.
+
 config PHY_RCAR_GEN2
        tristate "Renesas R-Car Gen2 USB PHY"
        depends on PHY && RCAR_GEN2

diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile
index 74e8d93..009f353 100644 (file)
--- a/drivers/phy/Makefile
+++ b/drivers/phy/Makefile
@@ -13,6 +13,7 @@ obj-$(CONFIG_PHY_SANDBOX) += sandbox-phy.o
 obj-$(CONFIG_$(SPL_)PIPE3_PHY) += ti-pipe3-phy.o
 obj-$(CONFIG_AM654_PHY) += phy-ti-am654.o
 obj-$(CONFIG_STI_USB_PHY) += sti_usb_phy.o
+obj-$(CONFIG_PHY_QCOM_IPQ4019_USB) += phy-qcom-ipq4019-usb.o
 obj-$(CONFIG_PHY_RCAR_GEN2) += phy-rcar-gen2.o
 obj-$(CONFIG_PHY_RCAR_GEN3) += phy-rcar-gen3.o
 obj-$(CONFIG_PHY_STM32_USBPHYC) += phy-stm32-usbphyc.o

diff --git a/drivers/phy/phy-qcom-ipq4019-usb.c b/drivers/phy/phy-qcom-ipq4019-usb.c
new file mode 100644 (file)
index 0000000..465f0d3
--- /dev/null
+++ b/drivers/phy/phy-qcom-ipq4019-usb.c
@@ -0,0 +1,145 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2019 Sartura Ltd.
+ *
+ * Author: Robert Marko <robert.marko@sartura.hr>
+ *
+ * Based on Linux driver
+ */
+
+#include <clk.h>
+#include <common.h>
+#include <dm.h>
+#include <generic-phy.h>
+#include <log.h>
+#include <reset.h>
+#include <asm/io.h>
+#include <linux/delay.h>
+
+struct ipq4019_usb_phy {
+       phys_addr_t                     base;
+       struct reset_ctl        por_rst;
+       struct reset_ctl        srif_rst;
+};
+
+static int ipq4019_ss_phy_power_off(struct phy *_phy)
+{
+       struct ipq4019_usb_phy *phy = dev_get_priv(_phy->dev);
+
+       reset_assert(&phy->por_rst);
+       mdelay(10);
+
+       return 0;
+}
+
+static int ipq4019_ss_phy_power_on(struct phy *_phy)
+{
+       struct ipq4019_usb_phy *phy = dev_get_priv(_phy->dev);
+
+       ipq4019_ss_phy_power_off(_phy);
+
+       reset_deassert(&phy->por_rst);
+
+       return 0;
+}
+
+static struct phy_ops ipq4019_usb_ss_phy_ops = {
+       .power_on = ipq4019_ss_phy_power_on,
+       .power_off = ipq4019_ss_phy_power_off,
+};
+
+static int ipq4019_usb_ss_phy_probe(struct udevice *dev)
+{
+       struct ipq4019_usb_phy *phy = dev_get_priv(dev);
+       int ret;
+
+       phy->base = dev_read_addr(dev);
+       if (phy->base == FDT_ADDR_T_NONE)
+               return -EINVAL;
+
+       ret = reset_get_by_name(dev, "por_rst", &phy->por_rst);
+       if (ret)
+               return ret;
+
+       return 0;
+}
+
+static const struct udevice_id ipq4019_usb_ss_phy_ids[] = {
+       { .compatible = "qcom,usb-ss-ipq4019-phy" },
+       { }
+};
+
+U_BOOT_DRIVER(ipq4019_usb_ss_phy) = {
+       .name           = "ipq4019-usb-ss-phy",
+       .id             = UCLASS_PHY,
+       .of_match       = ipq4019_usb_ss_phy_ids,
+       .ops            = &ipq4019_usb_ss_phy_ops,
+       .probe          = ipq4019_usb_ss_phy_probe,
+       .priv_auto_alloc_size = sizeof(struct ipq4019_usb_phy),
+};
+
+static int ipq4019_hs_phy_power_off(struct phy *_phy)
+{
+       struct ipq4019_usb_phy *phy = dev_get_priv(_phy->dev);
+
+       reset_assert(&phy->por_rst);
+       mdelay(10);
+
+       reset_assert(&phy->srif_rst);
+       mdelay(10);
+
+       return 0;
+}
+
+static int ipq4019_hs_phy_power_on(struct phy *_phy)
+{
+       struct ipq4019_usb_phy *phy = dev_get_priv(_phy->dev);
+
+       ipq4019_hs_phy_power_off(_phy);
+
+       reset_deassert(&phy->srif_rst);
+       mdelay(10);
+
+       reset_deassert(&phy->por_rst);
+
+       return 0;
+}
+
+static struct phy_ops ipq4019_usb_hs_phy_ops = {
+       .power_on = ipq4019_hs_phy_power_on,
+       .power_off = ipq4019_hs_phy_power_off,
+};
+
+static int ipq4019_usb_hs_phy_probe(struct udevice *dev)
+{
+       struct ipq4019_usb_phy *phy = dev_get_priv(dev);
+       int ret;
+
+       phy->base = dev_read_addr(dev);
+       if (phy->base == FDT_ADDR_T_NONE)
+               return -EINVAL;
+
+       ret = reset_get_by_name(dev, "por_rst", &phy->por_rst);
+       if (ret)
+               return ret;
+
+       ret = reset_get_by_name(dev, "srif_rst", &phy->srif_rst);
+       if (ret)
+               return ret;
+
+       return 0;
+}
+
+static const struct udevice_id ipq4019_usb_hs_phy_ids[] = {
+       { .compatible = "qcom,usb-hs-ipq4019-phy" },
+       { }
+};
+
+U_BOOT_DRIVER(ipq4019_usb_hs_phy) = {
+       .name           = "ipq4019-usb-hs-phy",
+       .id             = UCLASS_PHY,
+       .of_match       = ipq4019_usb_hs_phy_ids,
+       .ops            = &ipq4019_usb_hs_phy_ops,
+       .probe          = ipq4019_usb_hs_phy_probe,
+       .priv_auto_alloc_size = sizeof(struct ipq4019_usb_phy),
+};