This is a port of the Linux kernel commit 4708ee37826e
by Li Jun <jun.li@xxxxxxx>. The USB3 PHY in the i.MX8MP is very
close to the one in the i.MX8MQ and just needs a different setup
routine.
Signed-off-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
---
drivers/phy/freescale/phy-fsl-imx8mq-usb.c | 87 ++++++++++++++++++----
1 file changed, 74 insertions(+), 13 deletions(-)
diff --git a/drivers/phy/freescale/phy-fsl-imx8mq-usb.c b/drivers/phy/freescale/phy-fsl-imx8mq-usb.c
index d3f9c1ba6ecf..fc5fb006b56c 100644
--- a/drivers/phy/freescale/phy-fsl-imx8mq-usb.c
+++ b/drivers/phy/freescale/phy-fsl-imx8mq-usb.c
@@ -2,20 +2,24 @@
/* Copyright (c) 2017 NXP. */
#include <common.h>
+#include <driver.h>
+#include <errno.h>
#include <init.h>
#include <io.h>
-#include <of.h>
-#include <errno.h>
-#include <driver.h>
-#include <malloc.h>
-#include <usb/phy.h>
-#include <linux/phy/phy.h>
+#include <linux/bitfield.h>
#include <linux/clk.h>
#include <linux/err.h>
+#include <linux/phy/phy.h>
+#include <malloc.h>
+#include <of_device.h>
+#include <of.h>
+#include <usb/phy.h>
#define PHY_CTRL0 0x0
#define PHY_CTRL0_REF_SSP_EN BIT(2)
+#define PHY_CTRL0_FSEL_MASK GENMASK(10, 5)
+#define PHY_CTRL0_FSEL_24M 0x2a
#define PHY_CTRL1 0x4
#define PHY_CTRL1_RESET BIT(0)
@@ -26,6 +30,11 @@
#define PHY_CTRL2 0x8
#define PHY_CTRL2_TXENABLEN0 BIT(8)
+#define PHY_CTRL2_OTG_DISABLE BIT(9)
+
+#define PHY_CTRL6 0x18
+#define PHY_CTRL6_ALT_CLK_EN BIT(1)
+#define PHY_CTRL6_ALT_CLK_SEL BIT(0)
struct imx8mq_usb_phy {
struct phy *phy;
@@ -59,6 +68,44 @@ static int imx8mq_usb_phy_init(struct phy *phy)
return 0;
}
+static int imx8mp_usb_phy_init(struct phy *phy)
+{
+ struct imx8mq_usb_phy *imx_phy = phy_get_drvdata(phy);
+ u32 value;
+
+ /* USB3.0 PHY signal fsel for 24M ref */
+ value = readl(imx_phy->base + PHY_CTRL0);
+ value &= ~PHY_CTRL0_FSEL_MASK;
+ value |= FIELD_PREP(PHY_CTRL0_FSEL_MASK, PHY_CTRL0_FSEL_24M);
+ writel(value, imx_phy->base + PHY_CTRL0);
+
+ /* Disable alt_clk_en and use internal MPLL clocks */
+ value = readl(imx_phy->base + PHY_CTRL6);
+ value &= ~(PHY_CTRL6_ALT_CLK_SEL | PHY_CTRL6_ALT_CLK_EN);
+ writel(value, imx_phy->base + PHY_CTRL6);
+
+ value = readl(imx_phy->base + PHY_CTRL1);
+ value &= ~(PHY_CTRL1_VDATSRCENB0 | PHY_CTRL1_VDATDETENB0);
+ value |= PHY_CTRL1_RESET | PHY_CTRL1_ATERESET;
+ writel(value, imx_phy->base + PHY_CTRL1);
+
+ value = readl(imx_phy->base + PHY_CTRL0);
+ value |= PHY_CTRL0_REF_SSP_EN;
+ writel(value, imx_phy->base + PHY_CTRL0);
+
+ value = readl(imx_phy->base + PHY_CTRL2);
+ value |= PHY_CTRL2_TXENABLEN0 | PHY_CTRL2_OTG_DISABLE;
+ writel(value, imx_phy->base + PHY_CTRL2);
+
+ udelay(10);
+
+ value = readl(imx_phy->base + PHY_CTRL1);
+ value &= ~(PHY_CTRL1_RESET | PHY_CTRL1_ATERESET);
+ writel(value, imx_phy->base + PHY_CTRL1);
+
+ return 0;
+}
+
static int imx8mq_phy_power_on(struct phy *phy)
{
struct imx8mq_usb_phy *imx_phy = phy_get_drvdata(phy);
@@ -75,12 +122,26 @@ static int imx8mq_phy_power_off(struct phy *phy)
return 0;
}
-static struct phy_ops imx8mq_usb_phy_ops = {
+static const struct phy_ops imx8mq_usb_phy_ops = {
.init = imx8mq_usb_phy_init,
.power_on = imx8mq_phy_power_on,
.power_off = imx8mq_phy_power_off,
};
+static const struct phy_ops imx8mp_usb_phy_ops = {
+ .init = imx8mp_usb_phy_init,
+ .power_on = imx8mq_phy_power_on,
+ .power_off = imx8mq_phy_power_off,
+};
+
+static const struct of_device_id imx8mq_usb_phy_of_match[] = {
+ {.compatible = "fsl,imx8mq-usb-phy",
+ .data = &imx8mq_usb_phy_ops,},
+ {.compatible = "fsl,imx8mp-usb-phy",
+ .data = &imx8mp_usb_phy_ops,},
+ { }
+};
+
static struct phy *imx8mq_usb_phy_xlate(struct device_d *dev,
struct of_phandle_args *args)
{
@@ -93,6 +154,7 @@ static int imx8mq_usb_phy_probe(struct device_d *dev)
{
struct phy_provider *phy_provider;
struct imx8mq_usb_phy *imx_phy;
+ const struct phy_ops *phy_ops;
imx_phy = xzalloc(sizeof(*imx_phy));
@@ -106,7 +168,11 @@ static int imx8mq_usb_phy_probe(struct device_d *dev)
if (IS_ERR(imx_phy->base))
return PTR_ERR(imx_phy->base);
- imx_phy->phy = phy_create(dev, NULL, &imx8mq_usb_phy_ops);
+ phy_ops = of_device_get_match_data(dev);
+ if (!phy_ops)
+ return -EINVAL;
+
+ imx_phy->phy = phy_create(dev, NULL, phy_ops);
if (IS_ERR(imx_phy->phy))
return PTR_ERR(imx_phy->phy);
@@ -117,11 +183,6 @@ static int imx8mq_usb_phy_probe(struct device_d *dev)
return PTR_ERR_OR_ZERO(phy_provider);
}
-static const struct of_device_id imx8mq_usb_phy_of_match[] = {
- {.compatible = "fsl,imx8mq-usb-phy",},
- { },
-};
-
static struct driver_d imx8mq_usb_phy_driver = {
.name = "imx8mq-usb-phy",
.probe = imx8mq_usb_phy_probe,
--
2.34.1
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