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ARM: davinci: da8xx: Add USB PHY platform device 

There is now a proper phy driver for the DA8xx SoC USB PHY. This adds the
platform device declarations needed to use it.

Signed-off-by: David Lechner <david@lechnology.com>
[nsekhar@ti.com: keep usb-davinci.h included in board-da830-evm.c
		 minor subject line adjustment]
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
This commit is contained in:
David Lechner 2016-10-26 19:18:15 -05:00 committed by Sekhar Nori
parent ec7cc27ed1
commit 9b50475092
4 changed files with 24 additions and 14 deletions
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21
arch/arm/mach-davinci/board-da830-evm.c
View File

@ -112,7 +112,7 @@ static __init void da830_evm_usb_init(void)
int ret;
/*
* Set up USB clock/mode in the CFGCHIP2 register.
* Set up USB clock in the CFGCHIP2 register.
* FYI: CFGCHIP2 is 0x0000ef00 initially.
*/
cfgchip2 = __raw_readl(DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP2_REG));
@ -129,22 +129,15 @@ static __init void da830_evm_usb_init(void)
cfgchip2 &= ~CFGCHIP2_USB1PHYCLKMUX;
cfgchip2 |= CFGCHIP2_USB2PHYCLKMUX;
/*
* We have to override VBUS/ID signals when MUSB is configured into the
* host-only mode -- ID pin will float if no cable is connected, so the
* controller won't be able to drive VBUS thinking that it's a B-device.
* Otherwise, we want to use the OTG mode and enable VBUS comparators.
*/
cfgchip2 &= ~CFGCHIP2_OTGMODE_MASK;
#ifdef CONFIG_USB_MUSB_HOST
cfgchip2 |= CFGCHIP2_FORCE_HOST;
#else
cfgchip2 |= CFGCHIP2_SESENDEN | CFGCHIP2_VBDTCTEN;
#endif
__raw_writel(cfgchip2, DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP2_REG));
/* USB_REFCLKIN is not used. */
ret = da8xx_register_usb_phy();
if (ret)
pr_warn("%s: USB PHY registration failed: %d\n",
__func__, ret);
ret = davinci_cfg_reg(DA830_USB0_DRVVBUS);
if (ret)
pr_warn("%s: USB 2.0 PinMux setup failed: %d\n", __func__, ret);

5
arch/arm/mach-davinci/board-omapl138-hawk.c
View File

@ -260,6 +260,11 @@ static __init void omapl138_hawk_usb_init(void)
cfgchip2 |= CFGCHIP2_REFFREQ_24MHZ;
__raw_writel(cfgchip2, DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP2_REG));
ret = da8xx_register_usb_phy();
if (ret)
pr_warn("%s: USB PHY registration failed: %d\n",
__func__, ret);
ret = gpio_request_one(DA850_USB1_VBUS_PIN,
GPIOF_DIR_OUT, "USB1 VBUS");
if (ret < 0) {

1
arch/arm/mach-davinci/include/mach/da8xx.h
View File

@ -89,6 +89,7 @@ int da850_register_edma(struct edma_rsv_info *rsv[2]);
int da8xx_register_i2c(int instance, struct davinci_i2c_platform_data *pdata);
int da8xx_register_spi_bus(int instance, unsigned num_chipselect);
int da8xx_register_watchdog(void);
int da8xx_register_usb_phy(void);
int da8xx_register_usb20(unsigned mA, unsigned potpgt);
int da8xx_register_usb11(struct da8xx_ohci_root_hub *pdata);
int da8xx_register_emac(void);

11
arch/arm/mach-davinci/usb-da8xx.c
View File

@ -3,6 +3,7 @@
*/
#include <linux/dma-mapping.h>
#include <linux/init.h>
#include <linux/phy/phy.h>
#include <linux/platform_data/usb-davinci.h>
#include <linux/platform_device.h>
#include <linux/usb/musb.h>
@ -15,6 +16,16 @@
#define DA8XX_USB0_BASE 0x01e00000
#define DA8XX_USB1_BASE 0x01e25000
static struct platform_device da8xx_usb_phy = {
.name = "da8xx-usb-phy",
.id = -1,
};
int __init da8xx_register_usb_phy(void)
{
return platform_device_register(&da8xx_usb_phy);
}
#if IS_ENABLED(CONFIG_USB_MUSB_HDRC)
static struct musb_hdrc_config musb_config = {