This moves the two instances from the big node into two child nodes. The
glue layer ontop does almost nothing.
This could be two indepentant child nodes but I have no idea how
'ti,hwmods = "usb_otg_hs";' affects the two musb controler.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
---
arch/arm/boot/dts/am335x-bone.dts | 8 ++++++
arch/arm/boot/dts/am335x-evm.dts | 16 ++++++++++++
arch/arm/boot/dts/am335x-evmsk.dts | 16 ++++++++++++
arch/arm/boot/dts/am33xx.dtsi | 47 ++++++++++++++++++++++++-----------
drivers/usb/musb/musb_dsps.c | 51 ++++++++++++++++++--------------------
5 files changed, 97 insertions(+), 41 deletions(-)
diff --git a/arch/arm/boot/dts/am335x-bone.dts b/arch/arm/boot/dts/am335x-bone.dts
index 83184e5..ae50fd7 100644
--- a/arch/arm/boot/dts/am335x-bone.dts
+++ b/arch/arm/boot/dts/am335x-bone.dts
@@ -124,6 +124,14 @@
status = "okay";
};
+ musb: usb@47400000 {
+ status = "okay";
+
+ usb0@47401000 {
+ status = "okay";
+ };
+ };
+
i2c0: i2c@44e0b000 {
pinctrl-names = "default";
pinctrl-0 = <&i2c0_pins>;
diff --git a/arch/arm/boot/dts/am335x-evm.dts b/arch/arm/boot/dts/am335x-evm.dts
index 317637a..dc236f4 100644
--- a/arch/arm/boot/dts/am335x-evm.dts
+++ b/arch/arm/boot/dts/am335x-evm.dts
@@ -175,6 +175,22 @@
status = "okay";
};
+ musb1_phy: phy1@47401800 {
+ status = "okay";
+ };
+
+ musb: usb@47400000 {
+ status = "okay";
+
+ usb0@47401000 {
+ status = "okay";
+ };
+
+ usb1@47401800 {
+ status = "okay";
+ };
+ };
+
i2c1: i2c@4802a000 {
pinctrl-names = "default";
pinctrl-0 = <&i2c1_pins>;
diff --git a/arch/arm/boot/dts/am335x-evmsk.dts b/arch/arm/boot/dts/am335x-evmsk.dts
index 99d9444..74ce579 100644
--- a/arch/arm/boot/dts/am335x-evmsk.dts
+++ b/arch/arm/boot/dts/am335x-evmsk.dts
@@ -211,6 +211,22 @@
status = "okay";
};
+ musb1_phy: phy1@47401800 {
+ status = "okay";
+ };
+
+ musb: usb@47400000 {
+ status = "okay";
+
+ usb0@47401000 {
+ status = "okay";
+ };
+
+ usb1@47401800 {
+ status = "okay";
+ };
+ };
+
epwmss2: epwmss@48304000 {
status = "okay";
diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi
index 66bb420..bb2298c 100644
--- a/arch/arm/boot/dts/am33xx.dtsi
+++ b/arch/arm/boot/dts/am33xx.dtsi
@@ -349,22 +349,41 @@
status = "disabled";
};
- usb@47400000 {
+ musb: usb@47400000 {
compatible = "ti,musb-am33xx";
- reg = <0x47400000 0x1000 /* usbss */
- 0x47401000 0x800 /* musb instance 0 */
- 0x47401800 0x800>; /* musb instance 1 */
- interrupts = <17 /* usbss */
- 18 /* musb instance 0 */
- 19>; /* musb instance 1 */
- multipoint = <1>;
- num-eps = <16>;
- ram-bits = <12>;
- port0-mode = <3>;
- port1-mode = <3>;
- power = <250>;
+ reg = <0x47400000 0x1000>;
+ ranges;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ interrupts = <17>;
ti,hwmods = "usb_otg_hs";
- phys = <&musb1_phy>;
+ status = "disabled";
+
+ usb0@47401000 {
+ reg = <0x47401000 0x800>;
+ interrupts = <18>;
+ interrupt-names = "mc";
+ multipoint = <1>;
+ num-eps = <16>;
+ ram-bits = <12>;
+ port-mode = <3>;
+ power = <250>;
+ phys = <&musb0_phy>;
+ status = "disabled";
+ };
+
+ usb1@47401800 {
+ reg = <0x47401800 0x800>;
+ interrupts = <19>;
+ interrupt-names = "mc";
+ multipoint = <1>;
+ num-eps = <16>;
+ ram-bits = <12>;
+ port-mode = <3>;
+ power = <250>;
+ phys = <&musb1_phy>;
+ status = "disabled";
+ };
};
epwmss0: epwmss@48300000 {
diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c
index 22ad532..0e01cc1 100644
--- a/drivers/usb/musb/musb_dsps.c
+++ b/drivers/usb/musb/musb_dsps.c
@@ -43,6 +43,7 @@
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_address.h>
+#include <linux/of_irq.h>
#include "musb_core.h"
@@ -375,9 +376,9 @@ static int dsps_musb_init(struct musb *musb)
musb->mregs += wrp->musb_core_offset;
/* NOP driver needs change if supporting dual instance */
- musb->xceiv = devm_usb_get_phy_by_phandle(glue->dev, "phys", 0);
- if (IS_ERR_OR_NULL(musb->xceiv))
- return -EPROBE_DEFER;
+ musb->xceiv = devm_usb_get_phy_by_phandle(dev, "phys", 0);
+ if (IS_ERR(musb->xceiv))
+ return PTR_ERR(musb->xceiv);
/* Returns zero if e.g. not clocked */
rev = dsps_readl(reg_base, wrp->revision);
@@ -429,39 +430,32 @@ static struct musb_platform_ops dsps_ops = {
static u64 musb_dmamask = DMA_BIT_MASK(32);
-static int dsps_create_musb_pdev(struct dsps_glue *glue, u8 id)
+static int dsps_create_musb_pdev(struct dsps_glue *glue, u8 id,
+ struct device_node *np)
{
struct device *dev = glue->dev;
struct platform_device *pdev = to_platform_device(dev);
struct musb_hdrc_platform_data *pdata = dev->platform_data;
- struct device_node *np = pdev->dev.of_node;
struct musb_hdrc_config *config;
struct platform_device *musb;
- struct resource *res;
struct resource resources[2];
- char res_name[11];
int ret;
- /* first resource is for usbss, so start index from 1 */
- res = platform_get_resource(pdev, IORESOURCE_MEM, id + 1);
- if (!res) {
+ ret = of_address_to_resource(np, 0, &resources[0]);
+ if (ret) {
dev_err(dev, "failed to get memory for instance %d\n", id);
- ret = -ENODEV;
goto err0;
}
- res->parent = NULL;
- resources[0] = *res;
/* first resource is for usbss, so start index from 1 */
- res = platform_get_resource(pdev, IORESOURCE_IRQ, id + 1);
- if (!res) {
+ ret = of_irq_to_resource(np, 0, &resources[1]);
+ if (ret == 0) {
dev_err(dev, "failed to get irq for instance %d\n", id);
- ret = -ENODEV;
+ ret = -EINVAL;
goto err0;
}
- res->parent = NULL;
- resources[1] = *res;
- resources[1].name = "mc";
+ resources[0].parent = NULL;
+ resources[1].parent = NULL;
/* allocate the child platform device */
musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
@@ -474,6 +468,7 @@ static int dsps_create_musb_pdev(struct dsps_glue *glue, u8 id)
musb->dev.parent = dev;
musb->dev.dma_mask = &musb_dmamask;
musb->dev.coherent_dma_mask = musb_dmamask;
+ musb->dev.of_node = of_node_get(np);
glue->musb[id] = musb;
@@ -502,8 +497,7 @@ static int dsps_create_musb_pdev(struct dsps_glue *glue, u8 id)
of_property_read_u32(np, "num-eps", (u32 *)&config->num_eps);
of_property_read_u32(np, "ram-bits", (u32 *)&config->ram_bits);
- snprintf(res_name, sizeof(res_name), "port%d-mode", id);
- of_property_read_u32(np, res_name, (u32 *)&pdata->mode);
+ of_property_read_u32(np, "port-mode", (u32 *)&pdata->mode);
of_property_read_u32(np, "power", (u32 *)&pdata->power);
config->multipoint = of_property_read_bool(np, "multipoint");
@@ -537,6 +531,7 @@ static int dsps_probe(struct platform_device *pdev)
const struct of_device_id *match;
const struct dsps_musb_wrapper *wrp;
struct dsps_glue *glue;
+ struct device_node *child;
struct resource *iomem;
int ret, i;
@@ -583,9 +578,9 @@ static int dsps_probe(struct platform_device *pdev)
goto err2;
}
- /* create the child platform device for all instances of musb */
- for (i = 0; i < wrp->instances ; i++) {
- ret = dsps_create_musb_pdev(glue, i);
+ i = 0;
+ for_each_available_child_of_node(pdev->dev.of_node, child) {
+ ret = dsps_create_musb_pdev(glue, i, child);
if (ret != 0) {
dev_err(&pdev->dev, "failed to create child pdev\n");
/* release resources of previously created instances */
@@ -593,6 +588,7 @@ static int dsps_probe(struct platform_device *pdev)
platform_device_unregister(glue->musb[i]);
goto err3;
}
+ i++;
}
return 0;
@@ -610,12 +606,13 @@ static int dsps_probe(struct platform_device *pdev)
static int dsps_remove(struct platform_device *pdev)
{
struct dsps_glue *glue = platform_get_drvdata(pdev);
- const struct dsps_musb_wrapper *wrp = glue->wrp;
int i;
/* delete the child platform device */
- for (i = 0; i < wrp->instances ; i++)
- platform_device_unregister(glue->musb[i]);
+ for (i = 0; i < ARRAY_SIZE(glue->musb); i++) {
+ if (glue->musb[i])
+ platform_device_unregister(glue->musb[i]);
+ }
/* disable usbss clocks */
pm_runtime_put(&pdev->dev);
--
1.8.3.2
--
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