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[src/trunk]: src/sys/arch/arm/sunxi Add driver for Allwinner USB3 PHY.
details: https://anonhg.NetBSD.org/src/rev/fda5ae4b7832
branches: trunk
changeset: 832168:fda5ae4b7832
user: jmcneill <jmcneill%NetBSD.org@localhost>
date: Tue May 01 23:59:42 2018 +0000
description:
Add driver for Allwinner USB3 PHY.
diffstat:
sys/arch/arm/sunxi/files.sunxi | 6 +-
sys/arch/arm/sunxi/sunxi_usb3phy.c | 213 +++++++++++++++++++++++++++++++++++++
2 files changed, 218 insertions(+), 1 deletions(-)
diffs (237 lines):
diff -r c6d2cdfc384d -r fda5ae4b7832 sys/arch/arm/sunxi/files.sunxi
--- a/sys/arch/arm/sunxi/files.sunxi Tue May 01 23:59:15 2018 +0000
+++ b/sys/arch/arm/sunxi/files.sunxi Tue May 01 23:59:42 2018 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: files.sunxi,v 1.49 2018/05/01 19:53:14 jmcneill Exp $
+# $NetBSD: files.sunxi,v 1.50 2018/05/01 23:59:42 jmcneill Exp $
#
# Configuration info for Allwinner sunxi family SoCs
#
@@ -118,6 +118,10 @@
attach sunxiusbphy at fdt with sunxi_usbphy
file arch/arm/sunxi/sunxi_usbphy.c sunxi_usbphy
+device sunxiusb3phy
+attach sunxiusb3phy at fdt with sunxi_usb3phy
+file arch/arm/sunxi/sunxi_usb3phy.c sunxi_usb3phy
+
# EHCI
attach ehci at fdt with ehci_fdt
file dev/fdt/ehci_fdt.c ehci_fdt
diff -r c6d2cdfc384d -r fda5ae4b7832 sys/arch/arm/sunxi/sunxi_usb3phy.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/arm/sunxi/sunxi_usb3phy.c Tue May 01 23:59:42 2018 +0000
@@ -0,0 +1,213 @@
+/* $NetBSD: sunxi_usb3phy.c,v 1.1 2018/05/01 23:59:42 jmcneill Exp $ */
+
+/*-
+ * Copyright (c) 2018 Jared McNeill <jmcneill%invisible.ca@localhost>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+
+__KERNEL_RCSID(0, "$NetBSD: sunxi_usb3phy.c,v 1.1 2018/05/01 23:59:42 jmcneill Exp $");
+
+#include <sys/param.h>
+#include <sys/bus.h>
+#include <sys/device.h>
+#include <sys/intr.h>
+#include <sys/systm.h>
+#include <sys/time.h>
+
+#include <dev/fdt/fdtvar.h>
+
+#define SUNXI_APP 0x00
+#define APP_FORCE_VBUS __BITS(13,12)
+
+#define SUNXI_PIPE_CLOCK_CONTROL 0x14
+#define PCC_PIPE_CLK_OPEN __BIT(6)
+
+#define SUNXI_PHY_TUNE_LOW 0x18
+#define PTL_MAGIC 0x0047fc87
+
+#define SUNXI_PHY_TUNE_HIGH 0x1c
+#define PTH_TX_DEEMPH_3P5DB __BITS(24,19)
+#define PTH_TX_DEEMPH_6DB __BITS(18,13)
+#define PTH_TX_SWING_FULL __BITS(12,6)
+#define PTH_LOS_BIAS __BITS(5,3)
+#define PTH_TX_BOOST_LVL __BITS(2,0)
+
+#define SUNXI_PHY_EXTERNAL_CONTROL 0x20
+#define PEC_REF_SSP_EN __BIT(26)
+#define PEC_SSC_EN __BIT(24)
+#define PEC_EXTERN_VBUS __BITS(2,1)
+
+static int sunxi_usb3phy_match(device_t, cfdata_t, void *);
+static void sunxi_usb3phy_attach(device_t, device_t, void *);
+
+enum sunxi_usb3phy_type {
+ USB3PHY_H6 = 1,
+};
+
+static const struct of_compat_data compat_data[] = {
+ { "allwinner,sun50i-h6-usb3-phy", USB3PHY_H6 },
+ { NULL }
+};
+
+struct sunxi_usb3phy {
+ bus_space_tag_t phy_bst;
+ bus_space_handle_t phy_bsh;
+ struct fdtbus_regulator *phy_reg;
+};
+
+struct sunxi_usb3phy_softc {
+ device_t sc_dev;
+ enum sunxi_usb3phy_type sc_type;
+
+ struct sunxi_usb3phy sc_phy;
+
+ struct fdtbus_gpio_pin *sc_gpio_id_det;
+ struct fdtbus_gpio_pin *sc_gpio_vbus_det;
+};
+
+#define PHY_READ(phy, reg) \
+ bus_space_read_4((phy)->phy_bst, (phy)->phy_bsh, (reg))
+#define PHY_WRITE(phy, reg, val) \
+ bus_space_write_4((phy)->phy_bst, (phy)->phy_bsh, (reg), (val))
+
+CFATTACH_DECL_NEW(sunxi_usb3phy, sizeof(struct sunxi_usb3phy_softc),
+ sunxi_usb3phy_match, sunxi_usb3phy_attach, NULL, NULL);
+
+static void *
+sunxi_usb3phy_acquire(device_t dev, const void *data, size_t len)
+{
+ struct sunxi_usb3phy_softc * const sc = device_private(dev);
+
+ return &sc->sc_phy;
+}
+
+static void
+sunxi_usb3phy_release(device_t dev, void *priv)
+{
+}
+
+static int
+sunxi_usb3phy_enable(device_t dev, void *priv, bool enable)
+{
+ struct sunxi_usb3phy * const phy = priv;
+ uint32_t val;
+
+ if (enable) {
+ val = PHY_READ(phy, SUNXI_PHY_EXTERNAL_CONTROL);
+ val |= PEC_EXTERN_VBUS;
+ val |= PEC_SSC_EN;
+ val |= PEC_REF_SSP_EN;
+ PHY_WRITE(phy, SUNXI_PHY_EXTERNAL_CONTROL, val);
+
+ val = PHY_READ(phy, SUNXI_PIPE_CLOCK_CONTROL);
+ val |= PCC_PIPE_CLK_OPEN;
+ PHY_WRITE(phy, SUNXI_PIPE_CLOCK_CONTROL, val);
+
+ val = PHY_READ(phy, SUNXI_APP);
+ val |= APP_FORCE_VBUS;
+ PHY_WRITE(phy, SUNXI_APP, val);
+
+ PHY_WRITE(phy, SUNXI_PHY_TUNE_LOW, PTL_MAGIC);
+
+ val = PHY_READ(phy, SUNXI_PHY_TUNE_HIGH);
+ val |= PTH_TX_BOOST_LVL;
+ val |= PTH_LOS_BIAS;
+ val &= ~PTH_TX_SWING_FULL;
+ val |= __SHIFTIN(0x55, PTH_TX_SWING_FULL);
+ val &= ~PTH_TX_DEEMPH_6DB;
+ val |= __SHIFTIN(0x20, PTH_TX_DEEMPH_6DB);
+ val &= ~PTH_TX_DEEMPH_3P5DB;
+ val |= __SHIFTIN(0x15, PTH_TX_DEEMPH_3P5DB);
+ PHY_WRITE(phy, SUNXI_PHY_TUNE_HIGH, val);
+
+ return phy->phy_reg ? fdtbus_regulator_enable(phy->phy_reg) : 0;
+ } else {
+ return phy->phy_reg ? fdtbus_regulator_disable(phy->phy_reg) : 0;
+ }
+}
+
+const struct fdtbus_phy_controller_func sunxi_usb3phy_funcs = {
+ .acquire = sunxi_usb3phy_acquire,
+ .release = sunxi_usb3phy_release,
+ .enable = sunxi_usb3phy_enable,
+};
+
+static int
+sunxi_usb3phy_match(device_t parent, cfdata_t cf, void *aux)
+{
+ struct fdt_attach_args * const faa = aux;
+
+ return of_match_compat_data(faa->faa_phandle, compat_data);
+}
+
+static void
+sunxi_usb3phy_attach(device_t parent, device_t self, void *aux)
+{
+ struct sunxi_usb3phy_softc * const sc = device_private(self);
+ struct sunxi_usb3phy *phy = &sc->sc_phy;
+ struct fdt_attach_args * const faa = aux;
+ const int phandle = faa->faa_phandle;
+ struct fdtbus_reset *rst;
+ struct clk *clk;
+ bus_addr_t addr;
+ bus_size_t size;
+ u_int n;
+
+ sc->sc_dev = self;
+ sc->sc_type = of_search_compatible(phandle, compat_data)->data;
+
+ if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) {
+ aprint_error(": couldn't get phy registers\n");
+ return;
+ }
+
+ phy->phy_bst = faa->faa_bst;
+ if (bus_space_map(phy->phy_bst, addr, size, 0, &phy->phy_bsh) != 0) {
+ aprint_error(": couldn't map phy registers\n");
+ return;
+ }
+
+ /* Get optional regulator */
+ phy->phy_reg = fdtbus_regulator_acquire(phandle, "phy-supply");
+
+ /* Enable clocks */
+ for (n = 0; (clk = fdtbus_clock_get_index(phandle, n)) != NULL; n++)
+ if (clk_enable(clk) != 0) {
+ aprint_error(": couldn't enable clock #%d\n", n);
+ return;
+ }
+ /* De-assert resets */
+ for (n = 0; (rst = fdtbus_reset_get_index(phandle, n)) != NULL; n++)
+ if (fdtbus_reset_deassert(rst) != 0) {
+ aprint_error(": couldn't de-assert reset #%d\n", n);
+ return;
+ }
+
+ aprint_naive("\n");
+ aprint_normal(": USB3 PHY\n");
+
+ fdtbus_register_phy_controller(self, phandle, &sunxi_usb3phy_funcs);
+}
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