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ARM: davinci: omapl138-hawk: add a fixed regulator for ohci-da8xx 

Instead of directly using the vbus GPIO we should model it as a fixed
regulator. Add all necessary fix-ups for the regulator to be registered
and configure the vbus GPIO as its enable pin.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
This commit is contained in:
Bartosz Golaszewski 2019-04-12 14:36:38 +02:00 committed by Sekhar Nori
parent d327330185
commit 1d272894ec
1 changed files with 46 additions and 3 deletions
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49
arch/arm/mach-davinci/board-omapl138-hawk.c
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@ -21,6 +21,7 @@
#include <linux/platform_data/mtd-davinci.h>
#include <linux/platform_data/mtd-davinci-aemif.h>
#include <linux/platform_data/ti-aemif.h>
#include <linux/regulator/fixed.h>
#include <linux/regulator/machine.h>
#include <asm/mach-types.h>
@ -298,15 +299,50 @@ static const short da850_hawk_usb11_pins[] = {
-1
};
static struct gpiod_lookup_table hawk_usb_gpio_lookup = {
static struct regulator_consumer_supply hawk_usb_supplies[] = {
REGULATOR_SUPPLY("vbus", NULL),
};
static struct regulator_init_data hawk_usb_vbus_data = {
.consumer_supplies = hawk_usb_supplies,
.num_consumer_supplies = ARRAY_SIZE(hawk_usb_supplies),
};
static struct fixed_voltage_config hawk_usb_vbus = {
.supply_name = "vbus",
.microvolts = 3300000,
.init_data = &hawk_usb_vbus_data,
};
static struct platform_device hawk_usb_vbus_device = {
.name = "reg-fixed-voltage",
.id = 0,
.dev = {
.platform_data = &hawk_usb_vbus,
},
};
static struct gpiod_lookup_table hawk_usb_oc_gpio_lookup = {
.dev_id = "ohci-da8xx",
.table = {
GPIO_LOOKUP("davinci_gpio", DA850_USB1_VBUS_PIN, "vbus", 0),
GPIO_LOOKUP("davinci_gpio", DA850_USB1_OC_PIN, "oc", 0),
{ }
},
};
static struct gpiod_lookup_table hawk_usb_vbus_gpio_lookup = {
.dev_id = "reg-fixed-voltage.0",
.table = {
GPIO_LOOKUP("davinci_gpio", DA850_USB1_VBUS_PIN, NULL, 0),
{ }
},
};
static struct gpiod_lookup_table *hawk_usb_gpio_lookups[] = {
&hawk_usb_oc_gpio_lookup,
&hawk_usb_vbus_gpio_lookup,
};
static struct da8xx_ohci_root_hub omapl138_hawk_usb11_pdata = {
/* TPS2087 switch @ 5V */
.potpgt = (3 + 1) / 2, /* 3 ms max */
@ -327,12 +363,19 @@ static __init void omapl138_hawk_usb_init(void)
pr_warn("%s: USB PHY CLK registration failed: %d\n",
__func__, ret);
gpiod_add_lookup_tables(hawk_usb_gpio_lookups,
ARRAY_SIZE(hawk_usb_gpio_lookups));
ret = da8xx_register_usb_phy();
if (ret)
pr_warn("%s: USB PHY registration failed: %d\n",
__func__, ret);
gpiod_add_lookup_table(&hawk_usb_gpio_lookup);
ret = platform_device_register(&hawk_usb_vbus_device);
if (ret) {
pr_warn("%s: Unable to register the vbus supply\n", __func__);
return;
}
ret = da8xx_register_usb11(&omapl138_hawk_usb11_pdata);
if (ret)