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The USB PHY used by the Exynos7870 SoC has a single USB 2.0 interface.
Add its dedicated variant enum, compatible, and init/exit functions.
The PHY enable bit of Exynos7870's PHY is different in contrast to that
of Exynos850 and most Exynos PHYs. To allow this change, a simple if
condition is added in exynos_usbdrd_phy_isol() which changes the
bitmask. Since the variant enum is required, the function argument is
changed to accept the driver data itself.
Reviewed-by: Mattijs Korpershoek <[email protected]>
Signed-off-by: Kaustabh Chakraborty <[email protected]>
Signed-off-by: Minkyu Kang <[email protected]>
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The variant enum is used to uniquely identify which SoC the PHY block
belongs to. It is initially set in the match table, along with the
compatible string, it gets copied to driver data struct during probe.
SoC specific functions must only be called if the respective variant
enum is set. Add switch-case blocks wherever required.
Reviewed-by: Mattijs Korpershoek <[email protected]>
Signed-off-by: Kaustabh Chakraborty <[email protected]>
Signed-off-by: Minkyu Kang <[email protected]>
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Add DM driver for Exynos USB PHY controllers. For now it only supports
Exynos850 SoC. Only UTMI+ (USB 2.0) PHY interface is implemented, as
Exynos850 doesn't support USB 3.0. Only two clocks are used for this
controller:
- phy: bus clock, used for PHY registers access
- ref: PHY reference clock (OSCCLK)
Ported from Linux kernel: drivers/phy/samsung/phy-exynos5-usbdrd.c
Signed-off-by: Sam Protsenko <[email protected]>
Reviewed-by: Mattijs Korpershoek <[email protected]>
Reviewed-by: Minkyu Kang <[email protected]>
Signed-off-by: Minkyu Kang <[email protected]>
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