Add support for probing the phy-jz4770 driver on the JZ4780 SoC,
the X1000 SoC and the X1830 SoC from Ingenic.
Tested-by: 周正 (Zhou Zheng) <sernia.zhou@xxxxxxxxxxx>
Co-developed-by: 漆鹏振 (Qi Pengzhen) <aric.pzqi@xxxxxxxxxxx>
Signed-off-by: 漆鹏振 (Qi Pengzhen) <aric.pzqi@xxxxxxxxxxx>
Signed-off-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@xxxxxxxxxxxxxx>
---
Notes:
v1->v2:
Add bindings for the JZ4780 SoC.
v2->v3:
Use "of_device_get_match_data" instead "of_match_device"
to get version information.
v3->v4:
Fix typos.
drivers/usb/phy/Kconfig | 4 +-
drivers/usb/phy/phy-jz4770.c | 174 ++++++++++++++++++++++++++++++++-----------
2 files changed, 133 insertions(+), 45 deletions(-)
diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig
index 4b3fa78995cf..775f0dd7b5f5 100644
--- a/drivers/usb/phy/Kconfig
+++ b/drivers/usb/phy/Kconfig
@@ -185,11 +185,11 @@ config USB_ULPI_VIEWPORT
controllers with a viewport register (e.g. Chipidea/ARC controllers).
config JZ4770_PHY
- tristate "Ingenic JZ4770 Transceiver Driver"
+ tristate "Ingenic SoCs Transceiver Driver"
depends on MIPS || COMPILE_TEST
select USB_PHY
help
This driver provides PHY support for the USB controller found
- on the JZ4770 SoC from Ingenic.
+ on the JZ4770/JZ4780/X1000/X1830 SoC from Ingenic.
endmenu
diff --git a/drivers/usb/phy/phy-jz4770.c b/drivers/usb/phy/phy-jz4770.c
index 8f62dc2a90ff..cd49b32b4c13 100644
--- a/drivers/usb/phy/phy-jz4770.c
+++ b/drivers/usb/phy/phy-jz4770.c
@@ -1,27 +1,30 @@
// SPDX-License-Identifier: GPL-2.0
/*
- * Ingenic JZ4770 USB PHY driver
+ * Ingenic SoCs USB PHY driver
* Copyright (c) Paul Cercueil <paul@xxxxxxxxxxxxxxx>
+ * Copyright (c) 漆鹏振 (Qi Pengzhen) <aric.pzqi@xxxxxxxxxxx>
+ * Copyright (c) 周琰杰 (Zhou Yanjie) <zhouyanjie@xxxxxxxxxxxxxx>
*/
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/module.h>
+#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
#include <linux/usb/otg.h>
#include <linux/usb/phy.h>
+/* OTGPHY register offsets */
#define REG_USBPCR_OFFSET 0x00
#define REG_USBRDT_OFFSET 0x04
#define REG_USBVBFIL_OFFSET 0x08
#define REG_USBPCR1_OFFSET 0x0c
-/* USBPCR */
+/* bits within the USBPCR register */
#define USBPCR_USB_MODE BIT(31)
#define USBPCR_AVLD_REG BIT(30)
-#define USBPCR_INCRM BIT(27)
-#define USBPCR_CLK12_EN BIT(26)
+#define USBPCR_INCR_MASK BIT(27)
#define USBPCR_COMMONONN BIT(25)
#define USBPCR_VBUSVLDEXT BIT(24)
#define USBPCR_VBUSVLDEXTSEL BIT(23)
@@ -32,46 +35,80 @@
#define USBPCR_IDPULLUP_LSB 28
#define USBPCR_IDPULLUP_MASK GENMASK(29, USBPCR_IDPULLUP_LSB)
-#define USBPCR_IDPULLUP_ALWAYS (3 << USBPCR_IDPULLUP_LSB)
-#define USBPCR_IDPULLUP_SUSPEND (1 << USBPCR_IDPULLUP_LSB)
-#define USBPCR_IDPULLUP_OTG (0 << USBPCR_IDPULLUP_LSB)
+#define USBPCR_IDPULLUP_ALWAYS (0x2 << USBPCR_IDPULLUP_LSB)
+#define USBPCR_IDPULLUP_SUSPEND (0x1 << USBPCR_IDPULLUP_LSB)
+#define USBPCR_IDPULLUP_OTG (0x0 << USBPCR_IDPULLUP_LSB)
#define USBPCR_COMPDISTUNE_LSB 17
#define USBPCR_COMPDISTUNE_MASK GENMASK(19, USBPCR_COMPDISTUNE_LSB)
-#define USBPCR_COMPDISTUNE_DFT 4
+#define USBPCR_COMPDISTUNE_DFT (0x4 << USBPCR_COMPDISTUNE_LSB)
#define USBPCR_OTGTUNE_LSB 14
#define USBPCR_OTGTUNE_MASK GENMASK(16, USBPCR_OTGTUNE_LSB)
-#define USBPCR_OTGTUNE_DFT 4
+#define USBPCR_OTGTUNE_DFT (0x4 << USBPCR_OTGTUNE_LSB)
#define USBPCR_SQRXTUNE_LSB 11
#define USBPCR_SQRXTUNE_MASK GENMASK(13, USBPCR_SQRXTUNE_LSB)
-#define USBPCR_SQRXTUNE_DFT 3
+#define USBPCR_SQRXTUNE_DCR_20PCT (0x7 << USBPCR_SQRXTUNE_LSB)
+#define USBPCR_SQRXTUNE_DFT (0x3 << USBPCR_SQRXTUNE_LSB)
#define USBPCR_TXFSLSTUNE_LSB 7
#define USBPCR_TXFSLSTUNE_MASK GENMASK(10, USBPCR_TXFSLSTUNE_LSB)
-#define USBPCR_TXFSLSTUNE_DFT 3
+#define USBPCR_TXFSLSTUNE_DCR_50PPT (0xf << USBPCR_TXFSLSTUNE_LSB)
+#define USBPCR_TXFSLSTUNE_DCR_25PPT (0x7 << USBPCR_TXFSLSTUNE_LSB)
+#define USBPCR_TXFSLSTUNE_DFT (0x3 << USBPCR_TXFSLSTUNE_LSB)
+#define USBPCR_TXFSLSTUNE_INC_25PPT (0x1 << USBPCR_TXFSLSTUNE_LSB)
+#define USBPCR_TXFSLSTUNE_INC_50PPT (0x0 << USBPCR_TXFSLSTUNE_LSB)
+
+#define USBPCR_TXHSXVTUNE_LSB 4
+#define USBPCR_TXHSXVTUNE_MASK GENMASK(5, USBPCR_TXHSXVTUNE_LSB)
+#define USBPCR_TXHSXVTUNE_DFT (0x3 << USBPCR_TXHSXVTUNE_LSB)
+#define USBPCR_TXHSXVTUNE_DCR_15MV (0x1 << USBPCR_TXHSXVTUNE_LSB)
#define USBPCR_TXRISETUNE_LSB 4
#define USBPCR_TXRISETUNE_MASK GENMASK(5, USBPCR_TXRISETUNE_LSB)
-#define USBPCR_TXRISETUNE_DFT 3
+#define USBPCR_TXRISETUNE_DFT (0x3 << USBPCR_TXRISETUNE_LSB)
#define USBPCR_TXVREFTUNE_LSB 0
#define USBPCR_TXVREFTUNE_MASK GENMASK(3, USBPCR_TXVREFTUNE_LSB)
-#define USBPCR_TXVREFTUNE_DFT 5
+#define USBPCR_TXVREFTUNE_INC_25PPT (0x7 << USBPCR_TXVREFTUNE_LSB)
+#define USBPCR_TXVREFTUNE_DFT (0x5 << USBPCR_TXVREFTUNE_LSB)
-/* USBRDT */
+/* bits within the USBRDTR register */
+#define USBRDT_UTMI_RST BIT(27)
+#define USBRDT_HB_MASK BIT(26)
#define USBRDT_VBFIL_LD_EN BIT(25)
#define USBRDT_IDDIG_EN BIT(24)
#define USBRDT_IDDIG_REG BIT(23)
-
-#define USBRDT_USBRDT_LSB 0
-#define USBRDT_USBRDT_MASK GENMASK(22, USBRDT_USBRDT_LSB)
-
-/* USBPCR1 */
-#define USBPCR1_UHC_POWON BIT(5)
+#define USBRDT_VBFIL_EN BIT(2)
+
+/* bits within the USBPCR1 register */
+#define USBPCR1_BVLD_REG BIT(31)
+#define USBPCR1_DPPD BIT(29)
+#define USBPCR1_DMPD BIT(28)
+#define USBPCR1_USB_SEL BIT(28)
+#define USBPCR1_WORD_IF_16BIT BIT(19)
+
+#define USBPCR1_REFCLKSEL_LSB 26
+#define USBPCR1_REFCLKSEL_MASK GENMASK(27, USBPCR1_REFCLKDIV_LSB)
+#define USBPCR1_REFCLKSEL_CLKCORE (0x3 << USBPCR1_REFCLKSEL_LSB)
+
+#define USBPCR1_REFCLKDIV_LSB 24
+#define USBPCR1_REFCLKDIV_MASK GENMASK(25, USBPCR1_REFCLKDIV_LSB)
+#define USBPCR1_REFCLKDIV_48M (0x2 << USBPCR1_REFCLKDIV_LSB)
+#define USBPCR1_REFCLKDIV_24M (0x1 << USBPCR1_REFCLKDIV_LSB)
+#define USBPCR1_REFCLKDIV_12M (0x0 << USBPCR1_REFCLKDIV_LSB)
+
+enum ingenic_usb_phy_version {
+ ID_JZ4770,
+ ID_JZ4780,
+ ID_X1000,
+ ID_X1830,
+};
struct jz4770_phy {
+ enum ingenic_usb_phy_version version;
+
struct usb_phy phy;
struct usb_otg otg;
struct device *dev;
@@ -96,6 +133,12 @@ static int jz4770_phy_set_peripheral(struct usb_otg *otg,
struct jz4770_phy *priv = otg_to_jz4770_phy(otg);
u32 reg;
+ if (priv->version >= ID_X1000) {
+ reg = readl(priv->base + REG_USBPCR1_OFFSET);
+ reg |= USBPCR1_BVLD_REG;
+ writel(reg, priv->base + REG_USBPCR1_OFFSET);
+ }
+
reg = readl(priv->base + REG_USBPCR_OFFSET);
reg &= ~USBPCR_USB_MODE;
reg |= USBPCR_VBUSVLDEXT | USBPCR_VBUSVLDEXTSEL | USBPCR_OTG_DISABLE;
@@ -135,17 +178,59 @@ static int jz4770_phy_init(struct usb_phy *phy)
return err;
}
- reg = USBPCR_AVLD_REG | USBPCR_COMMONONN | USBPCR_IDPULLUP_ALWAYS |
- (USBPCR_COMPDISTUNE_DFT << USBPCR_COMPDISTUNE_LSB) |
- (USBPCR_OTGTUNE_DFT << USBPCR_OTGTUNE_LSB) |
- (USBPCR_SQRXTUNE_DFT << USBPCR_SQRXTUNE_LSB) |
- (USBPCR_TXFSLSTUNE_DFT << USBPCR_TXFSLSTUNE_LSB) |
- (USBPCR_TXRISETUNE_DFT << USBPCR_TXRISETUNE_LSB) |
- (USBPCR_TXVREFTUNE_DFT << USBPCR_TXVREFTUNE_LSB) |
- USBPCR_POR;
+ if (priv->version >= ID_X1830) {
+ /* rdt */
+ writel(USBRDT_VBFIL_EN | USBRDT_UTMI_RST, priv->base + REG_USBRDT_OFFSET);
+
+ reg = readl(priv->base + REG_USBPCR1_OFFSET) | USBPCR1_WORD_IF_16BIT |
+ USBPCR1_DMPD | USBPCR1_DPPD;
+ writel(reg, priv->base + REG_USBPCR1_OFFSET);
+
+ reg = USBPCR_IDPULLUP_OTG | USBPCR_VBUSVLDEXT | USBPCR_TXPREEMPHTUNE;
+ } else if (priv->version >= ID_X1000) {
+ reg = readl(priv->base + REG_USBPCR1_OFFSET) | USBPCR1_WORD_IF_16BIT;
+ writel(reg, priv->base + REG_USBPCR1_OFFSET);
+
+ reg = USBPCR_SQRXTUNE_DCR_20PCT | USBPCR_TXPREEMPHTUNE |
+ USBPCR_TXHSXVTUNE_DCR_15MV | USBPCR_TXVREFTUNE_INC_25PPT;
+ } else if (priv->version >= ID_JZ4780) {
+ reg = readl(priv->base + REG_USBPCR1_OFFSET) | USBPCR1_USB_SEL |
+ USBPCR1_WORD_IF_16BIT;
+ writel(reg, priv->base + REG_USBPCR1_OFFSET);
+
+ reg = USBPCR_TXPREEMPHTUNE;
+ } else {
+ reg = USBPCR_AVLD_REG | USBPCR_IDPULLUP_ALWAYS |
+ USBPCR_COMPDISTUNE_DFT | USBPCR_OTGTUNE_DFT |
+ USBPCR_SQRXTUNE_DFT | USBPCR_TXFSLSTUNE_DFT |
+ USBPCR_TXRISETUNE_DFT | USBPCR_TXVREFTUNE_DFT;
+ }
+
+ reg |= USBPCR_COMMONONN | USBPCR_POR;
writel(reg, priv->base + REG_USBPCR_OFFSET);
- /* Wait for PHY to reset */
+ /*
+ * Power-On Reset(POR)
+ * Function:This customer-specific signal resets all test registers
+ * and state machines in the USB 2.0 nanoPHY.
+ * The POR signal must be asserted for a minimum of 10 μs.
+ * For POR timing information:
+ *
+ * T0: Power-on reset (POR) is initiated. 0 (reference).
+ * T1: T1 indicates when POR can be set to 1’b0. (To provide examples,
+ * values for T2 and T3 are also shown where T1 = T0 + 30 μs.);
+ * In general, T1 must be ≥ T0 + 10 μs. T0 + 10 μs ≤ T1.
+ * T2: T2 indicates when PHYCLOCK, CLK48MOHCI, and CLK12MOHCI are
+ * available at the macro output, based on the USB 2.0 nanoPHY
+ * reference clock source.
+ * Crystal:
+ * • When T1 = T0 + 10 μs:
+ * T2 < T1 + 805 μs = T0 + 815 μs
+ * • When T1 = T0 + 30 μs:
+ * T2 < T1 + 805 μs = T0 + 835 μs
+ * see "Reset and Power-Saving Signals" on page 60 an “Powering Up
+ * and Powering Down the USB 2.0 nanoPHY” on page 73.
+ */
usleep_range(30, 300);
writel(reg & ~USBPCR_POR, priv->base + REG_USBPCR_OFFSET);
usleep_range(300, 1000);
@@ -166,6 +251,15 @@ static void jz4770_phy_remove(void *phy)
usb_remove_phy(phy);
}
+static const struct of_device_id ingenic_usb_phy_of_matches[] = {
+ { .compatible = "ingenic,jz4770-phy", .data = (void *) ID_JZ4770 },
+ { .compatible = "ingenic,jz4780-phy", .data = (void *) ID_JZ4780 },
+ { .compatible = "ingenic,x1000-phy", .data = (void *) ID_X1000 },
+ { .compatible = "ingenic,x1830-phy", .data = (void *) ID_X1830 },
+ { }
+};
+MODULE_DEVICE_TABLE(of, ingenic_usb_phy_of_matches);
+
static int jz4770_phy_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -176,11 +270,13 @@ static int jz4770_phy_probe(struct platform_device *pdev)
if (!priv)
return -ENOMEM;
+ priv->version = (enum ingenic_usb_phy_version)of_device_get_match_data(dev);
+
platform_set_drvdata(pdev, priv);
priv->dev = dev;
priv->phy.dev = dev;
priv->phy.otg = &priv->otg;
- priv->phy.label = "jz4770-phy";
+ priv->phy.label = "ingenic-usb-phy";
priv->phy.init = jz4770_phy_init;
priv->phy.shutdown = jz4770_phy_shutdown;
@@ -221,23 +317,15 @@ static int jz4770_phy_probe(struct platform_device *pdev)
return devm_add_action_or_reset(dev, jz4770_phy_remove, &priv->phy);
}
-#ifdef CONFIG_OF
-static const struct of_device_id jz4770_phy_of_matches[] = {
- { .compatible = "ingenic,jz4770-phy" },
- { }
-};
-MODULE_DEVICE_TABLE(of, jz4770_phy_of_matches);
-#endif
-
-static struct platform_driver jz4770_phy_driver = {
+static struct platform_driver ingenic_usb_phy_driver = {
.probe = jz4770_phy_probe,
.driver = {
- .name = "jz4770-phy",
- .of_match_table = of_match_ptr(jz4770_phy_of_matches),
+ .name = "ingenic-usb-phy",
+ .of_match_table = of_match_ptr(ingenic_usb_phy_of_matches),
},
};
-module_platform_driver(jz4770_phy_driver);
+module_platform_driver(ingenic_usb_phy_driver);
MODULE_AUTHOR("Paul Cercueil <paul@xxxxxxxxxxxxxxx>");
-MODULE_DESCRIPTION("Ingenic JZ4770 USB PHY driver");
+MODULE_DESCRIPTION("Ingenic SoCs USB PHY driver");
MODULE_LICENSE("GPL");
--
2.11.0
