[PATCH v7 2/5] phy: add a driver for the Rockchip SoC internal USB2.0 PHY

[Doug Anderson]

Yunzhi,

On Fri, Dec 12, 2014 at 7:07 AM, Yunzhi Li <lyz at rock-chips.com> wrote:
> This patch to add a generic PHY driver for ROCKCHIP usb PHYs,
> currently this driver can support RK3288. The RK3288 SoC have
> three independent USB PHY IPs which are all configured through a
> set of registers located in the GRF (general register files)
> module.
>
> Signed-off-by: Yunzhi Li <lyz at rock-chips.com>
>
> ---
>
> Changes in v7:
> - Accept Kishon's comments to use phandle args to find a phy
>   struct directly and get rid of using a custom of_xlate
>   function.
>
> Changes in v6:
> - Rename SIDDQ_MSK to SIDDQ_WRITE_ENA.
>
> Changes in v5: None
> Changes in v4:
> - Get number of PHYs from device tree.
> - Model each PHY as subnode of the phy provider node.
>
> Changes in v3:
> - Use BIT macro instead of bit shift ops.
> - Rename the config entry to PHY_ROCKCHIP_USB.
>
>  drivers/phy/Kconfig            |   7 ++
>  drivers/phy/Makefile           |   1 +
>  drivers/phy/phy-rockchip-usb.c | 158 +++++++++++++++++++++++++++++++++++++++++
>  3 files changed, 166 insertions(+)
>  create mode 100644 drivers/phy/phy-rockchip-usb.c

On rk3288-pinky (on a 3.14 tree with backports), I can confirm that
this properly gets us into low power at suspend time.

Tested-by: Doug Anderson <dianders at chromium.org>