#include <dm.h>
#include <fdtdec.h>
#include <generic-phy.h>
+#include <log.h>
#include <reset.h>
#include <syscon.h>
#include <usb.h>
#include <asm/io.h>
+#include <dm/device_compat.h>
#include <linux/bitops.h>
+#include <linux/delay.h>
#include <power/regulator.h>
/* USBPHYC registers */
#define MAX_PHYS 2
-#define PLL_LOCK_TIME_US 100
+/* max 100 us for PLL lock and 100 us for PHY init */
+#define PLL_INIT_TIME_US 200
#define PLL_PWR_DOWN_TIME_US 5
#define PLL_FVCO 2880 /* in MHz */
#define PLL_INFF_MIN_RATE 19200000 /* in Hz */
struct stm32_usbphyc {
fdt_addr_t base;
struct clk clk;
+ struct udevice *vdda1v1;
+ struct udevice *vdda1v8;
struct stm32_usbphyc_phy {
struct udevice *vdd;
- struct udevice *vdda1v1;
- struct udevice *vdda1v8;
- int index;
+ struct udevice *vbus;
bool init;
bool powered;
} phys[MAX_PHYS];
};
-void stm32_usbphyc_get_pll_params(u32 clk_rate, struct pll_params *pll_params)
+static void stm32_usbphyc_get_pll_params(u32 clk_rate,
+ struct pll_params *pll_params)
{
unsigned long long fvco, ndiv, frac;
if (pllen && stm32_usbphyc_is_init(usbphyc))
goto initialized;
+ if (usbphyc->vdda1v1) {
+ ret = regulator_set_enable(usbphyc->vdda1v1, true);
+ if (ret)
+ return ret;
+ }
+
+ if (usbphyc->vdda1v8) {
+ ret = regulator_set_enable(usbphyc->vdda1v8, true);
+ if (ret)
+ return ret;
+ }
+
if (pllen) {
clrbits_le32(usbphyc->base + STM32_USBPHYC_PLL, PLLEN);
udelay(PLL_PWR_DOWN_TIME_US);
setbits_le32(usbphyc->base + STM32_USBPHYC_PLL, PLLEN);
- /*
- * We must wait PLL_LOCK_TIME_US before checking that PLLEN
- * bit is still set
- */
- udelay(PLL_LOCK_TIME_US);
+ /* We must wait PLL_INIT_TIME_US before using PHY */
+ udelay(PLL_INIT_TIME_US);
if (!(readl(usbphyc->base + STM32_USBPHYC_PLL) & PLLEN))
return -EIO;
{
struct stm32_usbphyc *usbphyc = dev_get_priv(phy->dev);
struct stm32_usbphyc_phy *usbphyc_phy = usbphyc->phys + phy->id;
+ int ret;
pr_debug("%s phy ID = %lu\n", __func__, phy->id);
usbphyc_phy->init = false;
if (readl(usbphyc->base + STM32_USBPHYC_PLL) & PLLEN)
return -EIO;
+ if (usbphyc->vdda1v1) {
+ ret = regulator_set_enable(usbphyc->vdda1v1, false);
+ if (ret)
+ return ret;
+ }
+
+ if (usbphyc->vdda1v8) {
+ ret = regulator_set_enable(usbphyc->vdda1v8, false);
+ if (ret)
+ return ret;
+ }
+
return 0;
}
int ret;
pr_debug("%s phy ID = %lu\n", __func__, phy->id);
- if (usbphyc_phy->vdda1v1) {
- ret = regulator_set_enable(usbphyc_phy->vdda1v1, true);
- if (ret)
- return ret;
- }
-
- if (usbphyc_phy->vdda1v8) {
- ret = regulator_set_enable(usbphyc_phy->vdda1v8, true);
+ if (usbphyc_phy->vdd) {
+ ret = regulator_set_enable(usbphyc_phy->vdd, true);
if (ret)
return ret;
}
- if (usbphyc_phy->vdd) {
- ret = regulator_set_enable(usbphyc_phy->vdd, true);
+ if (usbphyc_phy->vbus) {
+ ret = regulator_set_enable(usbphyc_phy->vbus, true);
if (ret)
return ret;
}
if (stm32_usbphyc_is_powered(usbphyc))
return 0;
- if (usbphyc_phy->vdda1v1) {
- ret = regulator_set_enable(usbphyc_phy->vdda1v1, false);
- if (ret)
- return ret;
- }
-
- if (usbphyc_phy->vdda1v8) {
- ret = regulator_set_enable(usbphyc_phy->vdda1v8, false);
+ if (usbphyc_phy->vbus) {
+ ret = regulator_set_enable(usbphyc_phy->vbus, false);
if (ret)
return ret;
}
-
if (usbphyc_phy->vdd) {
- ret = regulator_set_enable(usbphyc_phy->vdd, false);
+ ret = regulator_set_enable_if_allowed(usbphyc_phy->vdd, false);
if (ret)
return ret;
}
return 0;
}
-static int stm32_usbphyc_get_regulator(struct udevice *dev, ofnode node,
+static int stm32_usbphyc_get_regulator(ofnode node,
char *supply_name,
struct udevice **regulator)
{
ret = ofnode_parse_phandle_with_args(node, supply_name,
NULL, 0, 0,
®ulator_phandle);
- if (ret) {
- dev_err(dev, "Can't find %s property (%d)\n", supply_name, ret);
+ if (ret)
return ret;
- }
ret = uclass_get_device_by_ofnode(UCLASS_REGULATOR,
regulator_phandle.node,
regulator);
-
- if (ret) {
- dev_err(dev, "Can't get %s regulator (%d)\n", supply_name, ret);
+ if (ret)
return ret;
- }
return 0;
}
static int stm32_usbphyc_of_xlate(struct phy *phy,
struct ofnode_phandle_args *args)
{
- if (args->args_count > 1) {
- pr_debug("%s: invalid args_count: %d\n", __func__,
- args->args_count);
- return -EINVAL;
- }
+ if (args->args_count < 1)
+ return -ENODEV;
if (args->args[0] >= MAX_PHYS)
return -ENODEV;
- if (args->args_count)
- phy->id = args->args[0];
- else
- phy->id = 0;
+ phy->id = args->args[0];
+
+ if ((phy->id == 0 && args->args_count != 1) ||
+ (phy->id == 1 && args->args_count != 2)) {
+ dev_err(phy->dev, "invalid number of cells for phy port%ld\n",
+ phy->id);
+ return -EINVAL;
+ }
return 0;
}
reset_deassert(&reset);
}
+ /* get usbphyc regulator */
+ ret = device_get_supply_regulator(dev, "vdda1v1-supply",
+ &usbphyc->vdda1v1);
+ if (ret) {
+ dev_err(dev, "Can't get vdda1v1-supply regulator\n");
+ return ret;
+ }
+
+ ret = device_get_supply_regulator(dev, "vdda1v8-supply",
+ &usbphyc->vdda1v8);
+ if (ret) {
+ dev_err(dev, "Can't get vdda1v8-supply regulator\n");
+ return ret;
+ }
+
/*
* parse all PHY subnodes in order to populate regulator associated
* to each PHY port
for (i = 0; i < MAX_PHYS; i++) {
struct stm32_usbphyc_phy *usbphyc_phy = usbphyc->phys + i;
- usbphyc_phy->index = i;
usbphyc_phy->init = false;
usbphyc_phy->powered = false;
- ret = stm32_usbphyc_get_regulator(dev, node, "phy-supply",
+ ret = stm32_usbphyc_get_regulator(node, "phy-supply",
&usbphyc_phy->vdd);
- if (ret)
+ if (ret) {
+ dev_err(dev, "Can't get phy-supply regulator\n");
return ret;
+ }
- ret = stm32_usbphyc_get_regulator(dev, node, "vdda1v1-supply",
- &usbphyc_phy->vdda1v1);
+ ret = stm32_usbphyc_get_regulator(node, "vbus-supply",
+ &usbphyc_phy->vbus);
if (ret)
- return ret;
-
- ret = stm32_usbphyc_get_regulator(dev, node, "vdda1v8-supply",
- &usbphyc_phy->vdda1v8);
- if (ret)
- return ret;
+ usbphyc_phy->vbus = NULL;
node = dev_read_next_subnode(node);
}
projects / platform / kernel / u-boot.git / blobdiff