* [PATCH v8 1/2] dt-bindings: usb: Add ESWIN EIC7700 USB controller
2025-11-12 5:52 [PATCH v8 0/2] Add driver support for ESWIN EIC7700 SoC USB controller caohang
@ 2025-11-12 5:53 ` caohang
2025-11-12 12:46 ` Rob Herring (Arm)
2025-11-12 5:53 ` [PATCH v8 2/2] usb: dwc3: eic7700: Add EIC7700 USB driver caohang
1 sibling, 1 reply; 4+ messages in thread
From: caohang @ 2025-11-12 5:53 UTC (permalink / raw)
To: gregkh, robh, krzk+dt, conor+dt, Thinh.Nguyen, p.zabel,
linux-kernel, linux-usb, devicetree
Cc: ningyu, linmin, pinkesh.vaghela, Hang Cao, Senchuan Zhang
From: Hang Cao <caohang@eswincomputing.com>
Add Device Tree binding documentation for the ESWIN EIC7700
usb controller module.
Signed-off-by: Senchuan Zhang <zhangsenchuan@eswincomputing.com>
Signed-off-by: Hang Cao <caohang@eswincomputing.com>
---
.../bindings/usb/eswin,eic7700-usb.yaml | 94 +++++++++++++++++++
1 file changed, 94 insertions(+)
create mode 100644 Documentation/devicetree/bindings/usb/eswin,eic7700-usb.yaml
diff --git a/Documentation/devicetree/bindings/usb/eswin,eic7700-usb.yaml b/Documentation/devicetree/bindings/usb/eswin,eic7700-usb.yaml
new file mode 100644
index 000000000000..41c3b1b98991
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/eswin,eic7700-usb.yaml
@@ -0,0 +1,94 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/usb/eswin,eic7700-usb.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ESWIN EIC7700 SoC Usb Controller
+
+maintainers:
+ - Wei Yang <yangwei1@eswincomputing.com>
+ - Senchuan Zhang <zhangsenchuan@eswincomputing.com>
+ - Hang Cao <caohang@eswincomputing.com>
+
+description:
+ The Usb controller on EIC7700 SoC.
+
+allOf:
+ - $ref: snps,dwc3-common.yaml#
+
+properties:
+ compatible:
+ const: eswin,eic7700-dwc3
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ interrupt-names:
+ items:
+ - const: peripheral
+
+ clocks:
+ maxItems: 3
+
+ clock-names:
+ items:
+ - const: aclk
+ - const: cfg
+ - const: usb_en
+
+ resets:
+ maxItems: 2
+
+ reset-names:
+ items:
+ - const: vaux
+ - const: usb_rst
+
+ eswin,hsp-sp-csr:
+ description:
+ HSP CSR is to control and get status of different high-speed peripherals
+ (such as Ethernet, USB, SATA, etc.) via register, which can tune
+ board-level's parameters of PHY, etc.
+ $ref: /schemas/types.yaml#/definitions/phandle-array
+ items:
+ - items:
+ - description: phandle to HSP Register Controller hsp_sp_csr node.
+ - description: USB bus register offset.
+ - description: AXI low power register offset.
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+ - interrupts
+ - interrupt-names
+ - resets
+ - reset-names
+ - eswin,hsp-sp-csr
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ usb@50480000 {
+ compatible = "eswin,eic7700-dwc3";
+ reg = <0x50480000 0x10000>;
+ clocks = <&clock 135>,
+ <&clock 136>,
+ <&hspcrg 18>;
+ clock-names = "aclk", "cfg", "usb_en";
+ interrupt-parent = <&plic>;
+ interrupts = <85>;
+ interrupt-names = "peripheral";
+ resets = <&reset 84>, <&hspcrg 2>;
+ reset-names = "vaux", "usb_rst";
+ dr_mode = "peripheral";
+ maximum-speed = "high-speed";
+ phy_type = "utmi";
+ eswin,hsp-sp-csr = <&hsp_sp_csr 0x800 0x818>;
+ };
--
2.34.1
^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH v8 2/2] usb: dwc3: eic7700: Add EIC7700 USB driver
2025-11-12 5:52 [PATCH v8 0/2] Add driver support for ESWIN EIC7700 SoC USB controller caohang
2025-11-12 5:53 ` [PATCH v8 1/2] dt-bindings: usb: Add ESWIN EIC7700 " caohang
@ 2025-11-12 5:53 ` caohang
1 sibling, 0 replies; 4+ messages in thread
From: caohang @ 2025-11-12 5:53 UTC (permalink / raw)
To: gregkh, robh, krzk+dt, conor+dt, Thinh.Nguyen, p.zabel,
linux-kernel, linux-usb, devicetree
Cc: ningyu, linmin, pinkesh.vaghela, Hang Cao, Senchuan Zhang
From: Hang Cao <caohang@eswincomputing.com>
The EIC7700 instantiates two USB 3.0 DWC3 IPs, each of which is backward
compatible with USB interfaces. It supports Super-speed (5Gb/s), DRD mode,
and compatible with xHCI 1.1, etc. Each of instances supports 16 endpoints
in device's mode and max 64 devices in host's mode.
This module needs to interact with the NOC via the AXI master bus, thus
requiring some HSP configuration operations to achieve this. Ops include
bus filter, pm signal or status to usb bus and so on.
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Signed-off-by: Senchuan Zhang <zhangsenchuan@eswincomputing.com>
Signed-off-by: Hang Cao <caohang@eswincomputing.com>
---
drivers/usb/dwc3/dwc3-generic-plat.c | 71 +++++++++++++++++++++++++---
1 file changed, 64 insertions(+), 7 deletions(-)
diff --git a/drivers/usb/dwc3/dwc3-generic-plat.c b/drivers/usb/dwc3/dwc3-generic-plat.c
index e869c7de7bc8..e846844e0023 100644
--- a/drivers/usb/dwc3/dwc3-generic-plat.c
+++ b/drivers/usb/dwc3/dwc3-generic-plat.c
@@ -10,8 +10,16 @@
#include <linux/clk.h>
#include <linux/platform_device.h>
#include <linux/reset.h>
+#include <linux/regmap.h>
+#include <linux/mfd/syscon.h>
#include "glue.h"
+#define EIC7700_HSP_BUS_FILTER_EN BIT(0)
+#define EIC7700_HSP_BUS_CLKEN_GM BIT(9)
+#define EIC7700_HSP_BUS_CLKEN_GS BIT(16)
+#define EIC7700_HSP_AXI_LP_XM_CSYSREQ BIT(0)
+#define EIC7700_HSP_AXI_LP_XS_CSYSREQ BIT(16)
+
struct dwc3_generic {
struct device *dev;
struct dwc3 dwc;
@@ -20,6 +28,11 @@ struct dwc3_generic {
struct reset_control *resets;
};
+struct dwc3_generic_config {
+ int (*init)(struct dwc3_generic *dwc3g);
+ struct dwc3_properties properties;
+};
+
#define to_dwc3_generic(d) container_of((d), struct dwc3_generic, dwc)
static void dwc3_generic_reset_control_assert(void *data)
@@ -27,9 +40,38 @@ static void dwc3_generic_reset_control_assert(void *data)
reset_control_assert(data);
}
+static int dwc3_eic7700_init(struct dwc3_generic *dwc3g)
+{
+ struct device *dev = dwc3g->dev;
+ struct regmap *regmap;
+ u32 hsp_usb_axi_lp;
+ u32 hsp_usb_bus;
+ u32 args[2];
+ u32 val;
+
+ regmap = syscon_regmap_lookup_by_phandle_args(dev->of_node,
+ "eswin,hsp-sp-csr",
+ ARRAY_SIZE(args), args);
+ if (IS_ERR(regmap)) {
+ dev_err(dev, "No hsp-sp-csr phandle specified\n");
+ return PTR_ERR(regmap);
+ }
+
+ hsp_usb_bus = args[0];
+ hsp_usb_axi_lp = args[1];
+
+ regmap_read(regmap, hsp_usb_bus, &val);
+ regmap_write(regmap, hsp_usb_bus, val | EIC7700_HSP_BUS_FILTER_EN |
+ EIC7700_HSP_BUS_CLKEN_GM | EIC7700_HSP_BUS_CLKEN_GS);
+
+ regmap_write(regmap, hsp_usb_axi_lp, EIC7700_HSP_AXI_LP_XM_CSYSREQ |
+ EIC7700_HSP_AXI_LP_XS_CSYSREQ);
+ return 0;
+}
+
static int dwc3_generic_probe(struct platform_device *pdev)
{
- const struct dwc3_properties *properties;
+ const struct dwc3_generic_config *plat_config;
struct dwc3_probe_data probe_data = {};
struct device *dev = &pdev->dev;
struct dwc3_generic *dwc3g;
@@ -77,12 +119,21 @@ static int dwc3_generic_probe(struct platform_device *pdev)
probe_data.res = res;
probe_data.ignore_clocks_and_resets = true;
- properties = of_device_get_match_data(dev);
- if (properties)
- probe_data.properties = *properties;
- else
+ plat_config = of_device_get_match_data(dev);
+ if (!plat_config) {
probe_data.properties = DWC3_DEFAULT_PROPERTIES;
+ goto core_probe;
+ }
+ probe_data.properties = plat_config->properties;
+ if (plat_config->init) {
+ ret = plat_config->init(dwc3g);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "failed to init platform\n");
+ }
+
+core_probe:
ret = dwc3_core_probe(&probe_data);
if (ret)
return dev_err_probe(dev, ret, "failed to register DWC3 Core\n");
@@ -150,13 +201,19 @@ static const struct dev_pm_ops dwc3_generic_dev_pm_ops = {
dwc3_generic_runtime_idle)
};
-static const struct dwc3_properties fsl_ls1028_dwc3 = {
- .gsbuscfg0_reqinfo = 0x2222,
+static const struct dwc3_generic_config fsl_ls1028_dwc3 = {
+ .properties.gsbuscfg0_reqinfo = 0x2222,
+};
+
+static const struct dwc3_generic_config eic7700_dwc3 = {
+ .init = dwc3_eic7700_init,
+ .properties = DWC3_DEFAULT_PROPERTIES,
};
static const struct of_device_id dwc3_generic_of_match[] = {
{ .compatible = "spacemit,k1-dwc3", },
{ .compatible = "fsl,ls1028a-dwc3", &fsl_ls1028_dwc3},
+ { .compatible = "eswin,eic7700-dwc3", &eic7700_dwc3},
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, dwc3_generic_of_match);
--
2.34.1
^ permalink raw reply related [flat|nested] 4+ messages in thread