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hw/usb: Add basic i.MX USB Phy support

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Add basic USB PHY support as implemented in i.MX23, i.MX28, i.MX6,
and i.MX7 SoCs.

The only support really needed - at least to boot Linux - is support
for soft reset, which needs to reset various registers to their initial
value. Otherwise, just record register values.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Message-id: 20200313014551.12554-2-linux@roeck-us.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Guenter Roeck 2020-03-12 18:45:47 -07:00 • committed by Peter Maydell
parent a98135f727
commit 0701a5efa0
6 changed files with 288 additions and 0 deletions
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53
include/hw/usb/imx-usb-phy.h Normal file
View file

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#ifndef IMX_USB_PHY_H
#define IMX_USB_PHY_H
#include "hw/sysbus.h"
#include "qemu/bitops.h"
enum IMXUsbPhyRegisters {
USBPHY_PWD,
USBPHY_PWD_SET,
USBPHY_PWD_CLR,
USBPHY_PWD_TOG,
USBPHY_TX,
USBPHY_TX_SET,
USBPHY_TX_CLR,
USBPHY_TX_TOG,
USBPHY_RX,
USBPHY_RX_SET,
USBPHY_RX_CLR,
USBPHY_RX_TOG,
USBPHY_CTRL,
USBPHY_CTRL_SET,
USBPHY_CTRL_CLR,
USBPHY_CTRL_TOG,
USBPHY_STATUS,
USBPHY_DEBUG = 0x14,
USBPHY_DEBUG_SET,
USBPHY_DEBUG_CLR,
USBPHY_DEBUG_TOG,
USBPHY_DEBUG0_STATUS,
USBPHY_DEBUG1 = 0x1c,
USBPHY_DEBUG1_SET,
USBPHY_DEBUG1_CLR,
USBPHY_DEBUG1_TOG,
USBPHY_VERSION,
USBPHY_MAX
};
#define USBPHY_CTRL_SFTRST BIT(31)
#define TYPE_IMX_USBPHY "imx.usbphy"
#define IMX_USBPHY(obj) OBJECT_CHECK(IMXUSBPHYState, (obj), TYPE_IMX_USBPHY)
typedef struct IMXUSBPHYState {
/* <private> */
SysBusDevice parent_obj;
/* <public> */
MemoryRegion iomem;
uint32_t usbphy[USBPHY_MAX];
} IMXUSBPHYState;
#endif /* IMX_USB_PHY_H */