These patches add Stingray USB PHY driver and its corresponding
DT nodes with documentation.
This patch set is based on Linux-5.0-rc2.
Changes from v4:
- Addressed Rob Herring review comments
- Removed child nodes and added #phy-cells 1
- Added xlate function to get phy using phandle argument.
Changes from v3:
- Addressed Rob Herring review comments
- Changed compatible strings.
- updated driver based on new compatible strings.
Changes from v2:
- Addressed Kishon review comments
- Updated patchset to Linux-5.0-rc2
Changes from v1:
- Addressed Kishon review comments
- phy init call return value handle
Srinath Mannam (3):
dt-bindings: phy: Add Stingray USB PHY binding document
phy: sr-usb: Add Stingray USB PHY driver
arm64: dts: Add USB DT nodes for Stingray SoC
.../bindings/phy/brcm,stingray-usb-phy.txt | 40 +++
.../boot/dts/broadcom/stingray/stingray-usb.dtsi | 78 ++++
.../arm64/boot/dts/broadcom/stingray/stingray.dtsi | 1 +
drivers/phy/broadcom/Kconfig | 11 +
drivers/phy/broadcom/Makefile | 1 +
drivers/phy/broadcom/phy-bcm-sr-usb.c | 393 +++++++++++++++++++++
6 files changed, 524 insertions(+)
create mode 100644 Documentation/devicetree/bindings/phy/brcm,stingray-usb-phy.txt
create mode 100644 arch/arm64/boot/dts/broadcom/stingray/stingray-usb.dtsi
create mode 100644 drivers/phy/broadcom/phy-bcm-sr-usb.c
--
2.7.4
Add DT binding document for Stingray USB PHY.
Signed-off-by: Srinath Mannam <[email protected]>
---
.../bindings/phy/brcm,stingray-usb-phy.txt | 40 ++++++++++++++++++++++
1 file changed, 40 insertions(+)
create mode 100644 Documentation/devicetree/bindings/phy/brcm,stingray-usb-phy.txt
diff --git a/Documentation/devicetree/bindings/phy/brcm,stingray-usb-phy.txt b/Documentation/devicetree/bindings/phy/brcm,stingray-usb-phy.txt
new file mode 100644
index 0000000..51c3d73
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/brcm,stingray-usb-phy.txt
@@ -0,0 +1,40 @@
+Broadcom Stingray USB PHY
+
+Required properties:
+ - compatible : should be one of the listed compatibles
+ - "brcm,sr-usb-combo-phy" is combo PHY has two PHYs, one SS and one HS.
+ - "brcm,sr-usb-hs-phy" is a single HS PHY.
+ - reg: offset and length of the PHY blocks registers
+ - address-cells: should be 1
+ - size-cells: should be 0
+ - #phy-cells:
+ - Must be 1 for brcm,sr-usb-combo-phy as it expects one argument to indicate
+ the PHY number of two PHYs. 0 for HS PHY and 1 for SS PHY.
+ - Must be 0 for brcm,sr-usb-hs-phy.
+
+Refer to phy/phy-bindings.txt for the generic PHY binding properties
+
+Example:
+ usbphy0: usb-phy@0 {
+ compatible = "brcm,sr-usb-combo-phy";
+ reg = <0x00000000 0x100>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ #phy-cells = <1>;
+ };
+
+ usbphy1: usb-phy@10000 {
+ compatible = "brcm,sr-usb-combo-phy";
+ reg = <0x00010000 0x100>,
+ #address-cells = <1>;
+ #size-cells = <0>;
+ #phy-cells = <1>;
+ };
+
+ usbphy2: usb-phy@20000 {
+ compatible = "brcm,sr-usb-hs-phy";
+ reg = <0x00020000 0x100>,
+ #address-cells = <1>;
+ #size-cells = <0>;
+ #phy-cells = <0>;
+ };
--
2.7.4
USB PHY driver supports two types of stingray USB PHYs
- Type 1 is a combo PHY contains two PHYs, one SS and one HS.
- Type 2 is a single HS PHY.
These two PHY versons support both Generic xHCI host controller driver
and BDC Broadcom device controller driver.
Signed-off-by: Srinath Mannam <[email protected]>
---
drivers/phy/broadcom/Kconfig | 11 +
drivers/phy/broadcom/Makefile | 1 +
drivers/phy/broadcom/phy-bcm-sr-usb.c | 393 ++++++++++++++++++++++++++++++++++
3 files changed, 405 insertions(+)
create mode 100644 drivers/phy/broadcom/phy-bcm-sr-usb.c
diff --git a/drivers/phy/broadcom/Kconfig b/drivers/phy/broadcom/Kconfig
index aa917a6..f30f481 100644
--- a/drivers/phy/broadcom/Kconfig
+++ b/drivers/phy/broadcom/Kconfig
@@ -10,6 +10,17 @@ config PHY_CYGNUS_PCIE
Enable this to support the Broadcom Cygnus PCIe PHY.
If unsure, say N.
+config PHY_BCM_SR_USB
+ tristate "Broadcom Stingray USB PHY driver"
+ depends on OF && (ARCH_BCM_IPROC || COMPILE_TEST)
+ select GENERIC_PHY
+ default ARCH_BCM_IPROC
+ help
+ Enable this to support the Broadcom Stingray USB PHY
+ driver. It supports all versions of Superspeed and
+ Highspeed PHYs.
+ If unsure, say N.
+
config BCM_KONA_USB2_PHY
tristate "Broadcom Kona USB2 PHY Driver"
depends on HAS_IOMEM
diff --git a/drivers/phy/broadcom/Makefile b/drivers/phy/broadcom/Makefile
index 0f60184..f453c7d 100644
--- a/drivers/phy/broadcom/Makefile
+++ b/drivers/phy/broadcom/Makefile
@@ -11,3 +11,4 @@ obj-$(CONFIG_PHY_BRCM_USB) += phy-brcm-usb-dvr.o
phy-brcm-usb-dvr-objs := phy-brcm-usb.o phy-brcm-usb-init.o
obj-$(CONFIG_PHY_BCM_SR_PCIE) += phy-bcm-sr-pcie.o
+obj-$(CONFIG_PHY_BCM_SR_USB) += phy-bcm-sr-usb.o
diff --git a/drivers/phy/broadcom/phy-bcm-sr-usb.c b/drivers/phy/broadcom/phy-bcm-sr-usb.c
new file mode 100644
index 0000000..bfe8237
--- /dev/null
+++ b/drivers/phy/broadcom/phy-bcm-sr-usb.c
@@ -0,0 +1,393 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2016-2018 Broadcom
+ */
+
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+
+enum bcm_usb_phy_version {
+ BCM_SR_USB_COMBO_PHY,
+ BCM_SR_USB_HS_PHY,
+};
+
+enum bcm_usb_phy_reg {
+ PLL_NDIV_FRAC,
+ PLL_NDIV_INT,
+ PLL_CTRL,
+ PHY_CTRL,
+ PHY_PLL_CTRL,
+};
+
+/* USB PHY registers */
+
+static const u8 bcm_usb_combo_phy_ss[] = {
+ [PLL_CTRL] = 0x18,
+ [PHY_CTRL] = 0x14,
+};
+
+static const u8 bcm_usb_combo_phy_hs[] = {
+ [PLL_NDIV_FRAC] = 0x04,
+ [PLL_NDIV_INT] = 0x08,
+ [PLL_CTRL] = 0x0c,
+ [PHY_CTRL] = 0x10,
+};
+
+#define HSPLL_NDIV_INT_VAL 0x13
+#define HSPLL_NDIV_FRAC_VAL 0x1005
+
+static const u8 bcm_usb_hs_phy[] = {
+ [PLL_NDIV_FRAC] = 0x0,
+ [PLL_NDIV_INT] = 0x4,
+ [PLL_CTRL] = 0x8,
+ [PHY_CTRL] = 0xc,
+};
+
+enum pll_ctrl_bits {
+ PLL_RESETB,
+ SSPLL_SUSPEND_EN,
+ PLL_SEQ_START,
+ PLL_LOCK,
+ PLL_PDIV,
+};
+
+static const u8 u3pll_ctrl[] = {
+ [PLL_RESETB] = 0,
+ [SSPLL_SUSPEND_EN] = 1,
+ [PLL_SEQ_START] = 2,
+ [PLL_LOCK] = 3,
+};
+
+#define HSPLL_PDIV_MASK 0xF
+#define HSPLL_PDIV_VAL 0x1
+
+static const u8 u2pll_ctrl[] = {
+ [PLL_PDIV] = 1,
+ [PLL_RESETB] = 5,
+ [PLL_LOCK] = 6,
+};
+
+enum bcm_usb_phy_ctrl_bits {
+ CORERDY,
+ AFE_LDO_PWRDWNB,
+ AFE_PLL_PWRDWNB,
+ AFE_BG_PWRDWNB,
+ PHY_ISO,
+ PHY_RESETB,
+ PHY_PCTL,
+};
+
+#define PHY_PCTL_MASK 0xffff
+/*
+ * 0x0806 of PCTL_VAL has below bits set
+ * BIT-8 : refclk divider 1
+ * BIT-3:2: device mode; mode is not effect
+ * BIT-1: soft reset active low
+ */
+#define HSPHY_PCTL_VAL 0x0806
+#define SSPHY_PCTL_VAL 0x0006
+
+static const u8 u3phy_ctrl[] = {
+ [PHY_RESETB] = 1,
+ [PHY_PCTL] = 2,
+};
+
+static const u8 u2phy_ctrl[] = {
+ [CORERDY] = 0,
+ [AFE_LDO_PWRDWNB] = 1,
+ [AFE_PLL_PWRDWNB] = 2,
+ [AFE_BG_PWRDWNB] = 3,
+ [PHY_ISO] = 4,
+ [PHY_RESETB] = 5,
+ [PHY_PCTL] = 6,
+};
+
+struct bcm_usb_phy_cfg {
+ uint32_t type;
+ uint32_t version;
+ void __iomem *regs;
+ struct phy *phy;
+ const u8 *offset;
+};
+
+#define PLL_LOCK_RETRY_COUNT 1000
+
+enum bcm_usb_phy_type {
+ USB_HS_PHY,
+ USB_SS_PHY,
+};
+
+#define NUM_BCM_SR_USB_COMBO_PHYS 2
+
+static inline void bcm_usb_reg32_clrbits(void __iomem *addr, uint32_t clear)
+{
+ writel(readl(addr) & ~clear, addr);
+}
+
+static inline void bcm_usb_reg32_setbits(void __iomem *addr, uint32_t set)
+{
+ writel(readl(addr) | set, addr);
+}
+
+static int bcm_usb_pll_lock_check(void __iomem *addr, u32 bit)
+{
+ int retry;
+ u32 rd_data;
+
+ retry = PLL_LOCK_RETRY_COUNT;
+ do {
+ rd_data = readl(addr);
+ if (rd_data & bit)
+ return 0;
+ udelay(1);
+ } while (--retry > 0);
+
+ pr_err("%s: FAIL\n", __func__);
+ return -ETIMEDOUT;
+}
+
+static int bcm_usb_ss_phy_init(struct bcm_usb_phy_cfg *phy_cfg)
+{
+ int ret = 0;
+ void __iomem *regs = phy_cfg->regs;
+ const u8 *offset;
+ u32 rd_data;
+
+ offset = phy_cfg->offset;
+
+ /* Set pctl with mode and soft reset */
+ rd_data = readl(regs + offset[PHY_CTRL]);
+ rd_data &= ~(PHY_PCTL_MASK << u3phy_ctrl[PHY_PCTL]);
+ rd_data |= (SSPHY_PCTL_VAL << u3phy_ctrl[PHY_PCTL]);
+ writel(rd_data, regs + offset[PHY_CTRL]);
+
+ bcm_usb_reg32_clrbits(regs + offset[PLL_CTRL],
+ BIT(u3pll_ctrl[SSPLL_SUSPEND_EN]));
+ bcm_usb_reg32_setbits(regs + offset[PLL_CTRL],
+ BIT(u3pll_ctrl[PLL_SEQ_START]));
+ bcm_usb_reg32_setbits(regs + offset[PLL_CTRL],
+ BIT(u3pll_ctrl[PLL_RESETB]));
+
+ /* Maximum timeout for PLL reset done */
+ msleep(30);
+
+ ret = bcm_usb_pll_lock_check(regs + offset[PLL_CTRL],
+ BIT(u3pll_ctrl[PLL_LOCK]));
+
+ return ret;
+}
+
+static int bcm_usb_hs_phy_init(struct bcm_usb_phy_cfg *phy_cfg)
+{
+ int ret = 0;
+ void __iomem *regs = phy_cfg->regs;
+ const u8 *offset;
+ u32 rd_data;
+
+ offset = phy_cfg->offset;
+
+ writel(HSPLL_NDIV_INT_VAL, regs + offset[PLL_NDIV_INT]);
+ writel(HSPLL_NDIV_FRAC_VAL, regs + offset[PLL_NDIV_FRAC]);
+
+ rd_data = readl(regs + offset[PLL_CTRL]);
+ rd_data &= ~(HSPLL_PDIV_MASK << u2pll_ctrl[PLL_PDIV]);
+ rd_data |= (HSPLL_PDIV_VAL << u2pll_ctrl[PLL_PDIV]);
+ writel(rd_data, regs + offset[PLL_CTRL]);
+
+ /* Set Core Ready high */
+ bcm_usb_reg32_setbits(regs + offset[PHY_CTRL],
+ BIT(u2phy_ctrl[CORERDY]));
+
+ /* Maximum timeout for Core Ready done */
+ msleep(30);
+
+ bcm_usb_reg32_setbits(regs + offset[PLL_CTRL],
+ BIT(u2pll_ctrl[PLL_RESETB]));
+ bcm_usb_reg32_setbits(regs + offset[PHY_CTRL],
+ BIT(u2phy_ctrl[PHY_RESETB]));
+
+
+ rd_data = readl(regs + offset[PHY_CTRL]);
+ rd_data &= ~(PHY_PCTL_MASK << u2phy_ctrl[PHY_PCTL]);
+ rd_data |= (HSPHY_PCTL_VAL << u2phy_ctrl[PHY_PCTL]);
+ writel(rd_data, regs + offset[PHY_CTRL]);
+
+ /* Maximum timeout for PLL reset done */
+ msleep(30);
+
+ ret = bcm_usb_pll_lock_check(regs + offset[PLL_CTRL],
+ BIT(u2pll_ctrl[PLL_LOCK]));
+
+ return ret;
+}
+
+static int bcm_usb_phy_reset(struct phy *phy)
+{
+ struct bcm_usb_phy_cfg *phy_cfg = phy_get_drvdata(phy);
+ void __iomem *regs = phy_cfg->regs;
+ const u8 *offset;
+
+ offset = phy_cfg->offset;
+
+ if (phy_cfg->type == USB_HS_PHY) {
+ bcm_usb_reg32_clrbits(regs + offset[PHY_CTRL],
+ BIT(u2phy_ctrl[CORERDY]));
+ bcm_usb_reg32_setbits(regs + offset[PHY_CTRL],
+ BIT(u2phy_ctrl[CORERDY]));
+ }
+
+ return 0;
+}
+
+static int bcm_usb_phy_init(struct phy *phy)
+{
+ struct bcm_usb_phy_cfg *phy_cfg = phy_get_drvdata(phy);
+ int ret = -EINVAL;
+
+ if (phy_cfg->type == USB_SS_PHY)
+ ret = bcm_usb_ss_phy_init(phy_cfg);
+ else if (phy_cfg->type == USB_HS_PHY)
+ ret = bcm_usb_hs_phy_init(phy_cfg);
+
+ return ret;
+}
+
+static struct phy_ops sr_phy_ops = {
+ .init = bcm_usb_phy_init,
+ .reset = bcm_usb_phy_reset,
+ .owner = THIS_MODULE,
+};
+
+static struct phy *bcm_usb_phy_xlate(struct device *dev,
+ struct of_phandle_args *args)
+{
+ struct bcm_usb_phy_cfg *phy_cfg;
+ int phy_idx;
+
+ phy_cfg = dev_get_drvdata(dev);
+ if (!phy_cfg)
+ return ERR_PTR(-EINVAL);
+
+ if (phy_cfg->version == BCM_SR_USB_COMBO_PHY) {
+ phy_idx = args->args[0];
+
+ if (WARN_ON(phy_idx > 1))
+ return ERR_PTR(-ENODEV);
+
+ return phy_cfg[phy_idx].phy;
+ } else
+ return phy_cfg->phy;
+}
+
+static int bcm_usb_phy_create(struct device *dev, struct device_node *node,
+ void __iomem *regs, uint32_t version)
+{
+ struct bcm_usb_phy_cfg *phy_cfg;
+ int idx;
+
+ if (version == BCM_SR_USB_COMBO_PHY) {
+ phy_cfg = devm_kzalloc(dev, NUM_BCM_SR_USB_COMBO_PHYS *
+ sizeof(struct bcm_usb_phy_cfg),
+ GFP_KERNEL);
+ if (!phy_cfg)
+ return -ENOMEM;
+
+ for (idx = 0; idx < NUM_BCM_SR_USB_COMBO_PHYS; idx++) {
+ phy_cfg[idx].regs = regs;
+ phy_cfg[idx].version = version;
+ if (idx == 0) {
+ phy_cfg[idx].offset = bcm_usb_combo_phy_hs;
+ phy_cfg[idx].type = USB_HS_PHY;
+ } else {
+ phy_cfg[idx].offset = bcm_usb_combo_phy_ss;
+ phy_cfg[idx].type = USB_SS_PHY;
+ }
+ phy_cfg[idx].phy = devm_phy_create(dev, node,
+ &sr_phy_ops);
+ if (IS_ERR(phy_cfg[idx].phy))
+ return PTR_ERR(phy_cfg[idx].phy);
+
+ phy_set_drvdata(phy_cfg[idx].phy, &phy_cfg[idx]);
+ }
+ } else if (version == BCM_SR_USB_HS_PHY) {
+ phy_cfg = devm_kzalloc(dev, sizeof(struct bcm_usb_phy_cfg),
+ GFP_KERNEL);
+ if (!phy_cfg)
+ return -ENOMEM;
+
+ phy_cfg->regs = regs;
+ phy_cfg->version = version;
+ phy_cfg->offset = bcm_usb_hs_phy;
+ phy_cfg->type = USB_HS_PHY;
+ phy_cfg->phy = devm_phy_create(dev, node, &sr_phy_ops);
+ if (IS_ERR(phy_cfg->phy))
+ return PTR_ERR(phy_cfg->phy);
+
+ phy_set_drvdata(phy_cfg->phy, phy_cfg);
+ }
+
+ dev_set_drvdata(dev, phy_cfg);
+
+ return 0;
+}
+
+static const struct of_device_id bcm_usb_phy_of_match[] = {
+ {
+ .compatible = "brcm,sr-usb-combo-phy",
+ .data = (void *)BCM_SR_USB_COMBO_PHY,
+ },
+ {
+ .compatible = "brcm,sr-usb-hs-phy",
+ .data = (void *)BCM_SR_USB_HS_PHY,
+ },
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, bcm_usb_phy_of_match);
+
+static int bcm_usb_phy_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct device_node *dn = dev->of_node;
+ const struct of_device_id *of_id;
+ struct resource *res;
+ void __iomem *regs;
+ int ret;
+ enum bcm_usb_phy_version version;
+ struct phy_provider *phy_provider;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ regs = devm_ioremap_resource(dev, res);
+ if (IS_ERR(regs))
+ return PTR_ERR(regs);
+
+ of_id = of_match_node(bcm_usb_phy_of_match, dn);
+ if (of_id)
+ version = (enum bcm_usb_phy_version)of_id->data;
+ else
+ return -ENODEV;
+
+ ret = bcm_usb_phy_create(dev, dn, regs, version);
+ if (ret)
+ return ret;
+
+ phy_provider = devm_of_phy_provider_register(dev, bcm_usb_phy_xlate);
+
+ return PTR_ERR_OR_ZERO(phy_provider);
+}
+
+static struct platform_driver bcm_usb_phy_driver = {
+ .driver = {
+ .name = "phy-bcm-sr-usb",
+ .of_match_table = bcm_usb_phy_of_match,
+ },
+ .probe = bcm_usb_phy_probe,
+};
+module_platform_driver(bcm_usb_phy_driver);
+
+MODULE_AUTHOR("Broadcom");
+MODULE_DESCRIPTION("Broadcom stingray USB Phy driver");
+MODULE_LICENSE("GPL v2");
--
2.7.4
Add DT nodes for
- Two xHCI host controllers
- Two BDC Broadcom USB device controller
- Five USB PHY controllers
[xHCI0] [BDC0] [xHCI1] [BDC1]
| | | |
--------------- -----------------------
| | | | |
[SS-PHY0] [HS-PHY0] [SS-PHY1] [HS-PHY2] [HS-PHY1]
[SS-PHY0/HS-PHY0] and [SS-PHY1/HS-PHY1] are combo PHYs has one SS and
one HS PHYs. [HS-PHY2] is a single HS PHY.
xHCI use SS-PHY to detect SS devices and HS-PHY to detect HS/FS/LS
devices. BDC use SS-PHY in SS mode and HS-PHY in HS mode.
xHCI0 port1 is SS-PHY0, port2 is HS-PHY0.
xHCI1 port1 is SS-PHY1, port2 is HS-PHY2 and port3 is HS-PHY1.
Signed-off-by: Srinath Mannam <[email protected]>
---
.../boot/dts/broadcom/stingray/stingray-usb.dtsi | 78 ++++++++++++++++++++++
.../arm64/boot/dts/broadcom/stingray/stingray.dtsi | 1 +
2 files changed, 79 insertions(+)
create mode 100644 arch/arm64/boot/dts/broadcom/stingray/stingray-usb.dtsi
diff --git a/arch/arm64/boot/dts/broadcom/stingray/stingray-usb.dtsi b/arch/arm64/boot/dts/broadcom/stingray/stingray-usb.dtsi
new file mode 100644
index 0000000..a5d3354
--- /dev/null
+++ b/arch/arm64/boot/dts/broadcom/stingray/stingray-usb.dtsi
@@ -0,0 +1,78 @@
+// SPDX-License-Identifier: (GPL-2.0 or BSD-3-Clause)
+/*
+ *Copyright(c) 2018 Broadcom
+ */
+ usb {
+ compatible = "simple-bus";
+ dma-ranges;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0x0 0x0 0x68500000 0x00400000>;
+
+ usbphy0: usb-phy@0 {
+ compatible = "brcm,sr-usb-combo-phy";
+ reg = <0x00000000 0x100>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ #phy-cells = <1>;
+ status = "disabled";
+ };
+
+ xhci0: usb@1000 {
+ compatible = "generic-xhci";
+ reg = <0x00001000 0x1000>;
+ interrupts = <GIC_SPI 256 IRQ_TYPE_LEVEL_HIGH>;
+ phys = <&usbphy0 1>, <&usbphy0 0>;
+ phy-names = "phy0", "phy1";
+ dma-coherent;
+ status = "disabled";
+ };
+
+ bdc0: usb@2000 {
+ compatible = "brcm,bdc-v0.16";
+ reg = <0x00002000 0x1000>;
+ interrupts = <GIC_SPI 259 IRQ_TYPE_LEVEL_HIGH>;
+ phys = <&usbphy0 0>, <&usbphy0 1>;
+ phy-names = "phy0", "phy1";
+ dma-coherent;
+ status = "disabled";
+ };
+
+ usbphy1: usb-phy@10000 {
+ compatible = "brcm,sr-usb-combo-phy";
+ reg = <0x00010000 0x100>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ #phy-cells = <1>;
+ status = "disabled";
+ };
+
+ usbphy2: usb-phy@20000 {
+ compatible = "brcm,sr-usb-hs-phy";
+ reg = <0x00020000 0x100>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ #phy-cells = <0>;
+ status = "disabled";
+ };
+
+ xhci1: usb@11000 {
+ compatible = "generic-xhci";
+ reg = <0x00011000 0x1000>;
+ interrupts = <GIC_SPI 263 IRQ_TYPE_LEVEL_HIGH>;
+ phys = <&usbphy1 1>, <&usbphy2>, <&usbphy1 0>;
+ phy-names = "phy0", "phy1", "phy2";
+ dma-coherent;
+ status = "disabled";
+ };
+
+ bdc1: usb@21000 {
+ compatible = "brcm,bdc-v0.16";
+ reg = <0x00021000 0x1000>;
+ interrupts = <GIC_SPI 266 IRQ_TYPE_LEVEL_HIGH>;
+ phys = <&usbphy2>;
+ phy-names = "phy0";
+ dma-coherent;
+ status = "disabled";
+ };
+ };
diff --git a/arch/arm64/boot/dts/broadcom/stingray/stingray.dtsi b/arch/arm64/boot/dts/broadcom/stingray/stingray.dtsi
index cfeaa85..21dbb12 100644
--- a/arch/arm64/boot/dts/broadcom/stingray/stingray.dtsi
+++ b/arch/arm64/boot/dts/broadcom/stingray/stingray.dtsi
@@ -287,6 +287,7 @@
#include "stingray-fs4.dtsi"
#include "stingray-sata.dtsi"
#include "stingray-pcie.dtsi"
+ #include "stingray-usb.dtsi"
hsls {
compatible = "simple-bus";
--
2.7.4
On Tue, Mar 12, 2019 at 09:36:19PM +0530, Srinath Mannam wrote:
> Add DT binding document for Stingray USB PHY.
>
> Signed-off-by: Srinath Mannam <[email protected]>
> ---
> .../bindings/phy/brcm,stingray-usb-phy.txt | 40 ++++++++++++++++++++++
> 1 file changed, 40 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/phy/brcm,stingray-usb-phy.txt
>
> diff --git a/Documentation/devicetree/bindings/phy/brcm,stingray-usb-phy.txt b/Documentation/devicetree/bindings/phy/brcm,stingray-usb-phy.txt
> new file mode 100644
> index 0000000..51c3d73
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/brcm,stingray-usb-phy.txt
> @@ -0,0 +1,40 @@
> +Broadcom Stingray USB PHY
> +
> +Required properties:
> + - compatible : should be one of the listed compatibles
> + - "brcm,sr-usb-combo-phy" is combo PHY has two PHYs, one SS and one HS.
> + - "brcm,sr-usb-hs-phy" is a single HS PHY.
> + - reg: offset and length of the PHY blocks registers
> + - address-cells: should be 1
> + - size-cells: should be 0
These can be dropped now. With that,
Reviewed-by: Rob Herring <[email protected]>
> + - #phy-cells:
> + - Must be 1 for brcm,sr-usb-combo-phy as it expects one argument to indicate
> + the PHY number of two PHYs. 0 for HS PHY and 1 for SS PHY.
> + - Must be 0 for brcm,sr-usb-hs-phy.
> +
> +Refer to phy/phy-bindings.txt for the generic PHY binding properties
> +
> +Example:
> + usbphy0: usb-phy@0 {
> + compatible = "brcm,sr-usb-combo-phy";
> + reg = <0x00000000 0x100>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> + #phy-cells = <1>;
> + };
> +
> + usbphy1: usb-phy@10000 {
> + compatible = "brcm,sr-usb-combo-phy";
> + reg = <0x00010000 0x100>,
> + #address-cells = <1>;
> + #size-cells = <0>;
> + #phy-cells = <1>;
> + };
> +
> + usbphy2: usb-phy@20000 {
> + compatible = "brcm,sr-usb-hs-phy";
> + reg = <0x00020000 0x100>,
> + #address-cells = <1>;
> + #size-cells = <0>;
> + #phy-cells = <0>;
> + };
> --
> 2.7.4
>