Hi Chanwoo
On 08/10/2016 08:37 AM, Chanwoo Choi wrote:
Hi Chris,
On 2016년 08월 10일 08:32, Chris Zhong wrote:
Hi all
This series patch is for rockchip Type-C phy and DisplayPort controller
driver.
The USB Type-C PHY is designed to support the USB3 and DP applications.
The PHY basically has two main components: USB3 and DisplyPort. USB3
operates in SuperSpeed mode and the DP can operate at RBR, HBR and HBR2
data rates. The Type-C cable orientation detection and Power Delivery
(PD) is accomplished using a PD PHY or a exernal PD chip.
The DP controller is compliant with DisplayPort Specification,
Version 1.3, This IP is compatible with the rockchip type-c PHY IP.
There is a uCPU in DP controller, it need a firmware to work, please
put the firmware file[0] to /lib/firmware/rockchip/dptx.bin. The uCPU
in charge of aux communication and link training, the host use mailbox
to communicate with the ucpu.
The DP contoller has register a notification with extcon API, to get the
alt mode from PD, the PD driver need call the devm_extcon_dev_allocate
to create a extcon device and use extcon_set_state to notify DP
controller. And call extcon_set_cable_property to set orientation.
About the DP audio, cdn-dp registered 2 DAIs: 0 is I2S, 1 is SPDIF.
We can reference them in simple-card.
This series is based on Mark Yao's branch[1] and Chanwoo Choi's
extcon-next branch[2], and the clk patch[3].
I test this patches on the rk3399-evb board, with a fusb302 driver,
this branch has no rk3399.dtsi, so the patch about dts is not included
in this series.
>From V9, the Type-C PHY is split into two PHYs: DP and USB3. The PHY
will be init, no matter which PHY be power_on. The DP module will
enter A2 mode (standby mode) after phy_init, if DP PHY is powered on,
the DP module will enter to A0 mode(running mode). Then if DP PHY is
powered off, DP module will back to A2 mode. If everything is
un-plugged, phy will be deinit.
[0]
https://patchwork.kernel.org/patch/9249693/
[1]
https://github.com/markyzq/kernel-drm-rockchip/tree/drm-rockchip-next-2016-05-23
[2]
https://git.kernel.org/cgit/linux/kernel/git/chanwoo/extcon.git/log/?h=extcon-test
- extcon: Add the extcon_type to gather each connector into five category
- extcon: Add the support for extcon property according to extcon type
- extcon: Add the support for the capability of each property
- extcon: Rename the extcon_set/get_state() to maintain the function naming
pattern
- extcon: Add the synchronization extcon APIs to support the notification
- extcon: Add EXTCON_DISP_DP and the property for USB Type-C
The extcon patches are merged on extcon-next branch.
So, you can check them on both extcon git and linux-next git repo.
Oh, did not notice these extcon patches has landed.
I will remove this section, if next version DP is required.
[snip]
Regards,
Chanwoo Choi
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