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Message-Id: <20190411093024.23555-6-brgl@bgdev.pl> Date: Thu, 11 Apr 2019 11:30:23 +0200 From: Bartosz Golaszewski <brgl@...ev.pl> To: Sekhar Nori <nsekhar@...com>, Kevin Hilman <khilman@...nel.org>, Alan Stern <stern@...land.harvard.edu>, Greg Kroah-Hartman <gregkh@...uxfoundation.org> Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org, Bartosz Golaszewski <bgolaszewski@...libre.com> Subject: [PATCH v4 5/6] ARM: davinci: da830-evm: add a fixed regulator for ohci-da8xx From: Bartosz Golaszewski <bgolaszewski@...libre.com> 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@...libre.com> --- arch/arm/mach-davinci/board-da830-evm.c | 49 +++++++++++++++++++++++-- 1 file changed, 46 insertions(+), 3 deletions(-) diff --git a/arch/arm/mach-davinci/board-da830-evm.c b/arch/arm/mach-davinci/board-da830-evm.c index e3d74e43c47d..51a892702e27 100644 --- a/arch/arm/mach-davinci/board-da830-evm.c +++ b/arch/arm/mach-davinci/board-da830-evm.c @@ -29,6 +29,7 @@ #include <linux/platform_data/spi-davinci.h> #include <linux/platform_data/usb-davinci.h> #include <linux/platform_data/ti-aemif.h> +#include <linux/regulator/fixed.h> #include <linux/regulator/machine.h> #include <linux/nvmem-provider.h> @@ -53,15 +54,50 @@ static const short da830_evm_usb11_pins[] = { -1 }; -static struct gpiod_lookup_table da830_evm_usb_gpio_lookup = { +static struct regulator_consumer_supply da830_evm_usb_supplies[] = { + REGULATOR_SUPPLY("vbus", NULL), +}; + +static struct regulator_init_data da830_evm_usb_vbus_data = { + .consumer_supplies = da830_evm_usb_supplies, + .num_consumer_supplies = ARRAY_SIZE(da830_evm_usb_supplies), +}; + +static struct fixed_voltage_config da830_evm_usb_vbus = { + .supply_name = "vbus", + .microvolts = 33000000, + .init_data = &da830_evm_usb_vbus_data, +}; + +static struct platform_device da830_evm_usb_vbus_device = { + .name = "reg-fixed-voltage", + .id = 0, + .dev = { + .platform_data = &da830_evm_usb_vbus, + }, +}; + +static struct gpiod_lookup_table da830_evm_usb_oc_gpio_lookup = { .dev_id = "ohci-da8xx", .table = { - GPIO_LOOKUP("davinci_gpio", ON_BD_USB_DRV, "vbus", 0), GPIO_LOOKUP("davinci_gpio", ON_BD_USB_OVC, "oc", 0), { } }, }; +static struct gpiod_lookup_table da830_evm_usb_vbus_gpio_lookup = { + .dev_id = "reg-fixed-voltage.0", + .table = { + GPIO_LOOKUP("davinci_gpio", ON_BD_USB_DRV, "vbus", 0), + { } + }, +}; + +static struct gpiod_lookup_table *da830_evm_usb_gpio_lookups[] = { + &da830_evm_usb_oc_gpio_lookup, + &da830_evm_usb_vbus_gpio_lookup, +}; + static struct da8xx_ohci_root_hub da830_evm_usb11_pdata = { /* TPS2065 switch @ 5V */ .potpgt = (3 + 1) / 2, /* 3 ms max */ @@ -76,6 +112,9 @@ static __init void da830_evm_usb_init(void) pr_warn("%s: USB PHY CLK registration failed: %d\n", __func__, ret); + gpiod_add_lookup_tables(da830_evm_usb_gpio_lookups, + ARRAY_SIZE(da830_evm_usb_gpio_lookups)); + ret = da8xx_register_usb_phy(); if (ret) pr_warn("%s: USB PHY registration failed: %d\n", @@ -101,7 +140,11 @@ static __init void da830_evm_usb_init(void) return; } - gpiod_add_lookup_table(&da830_evm_usb_gpio_lookup); + ret = platform_device_register(&da830_evm_usb_vbus_device); + if (ret) { + pr_warn("%s: Unable to register the vbus supply\n", __func__); + return; + } ret = da8xx_register_usb11(&da830_evm_usb11_pdata); if (ret) -- 2.21.0
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