linux-kernel - Re: [v10 PATCH 0/5] Rockchip Type-C and DisplayPort driver

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-id: <57AA772C.1010303@samsung.com>
Date:	Wed, 10 Aug 2016 09:37:00 +0900
From:	Chanwoo Choi <cw00.choi@...sung.com>
To:	Chris Zhong <zyw@...k-chips.com>, dianders@...omium.org,
	tfiga@...omium.org, heiko@...ech.de, yzq@...k-chips.com,
	groeck@...omium.org, myungjoo.ham@...sung.com, wulf@...k-chips.com,
	marcheu@...omium.org
Cc:	linux-rockchip@...ts.infradead.org, devicetree@...r.kernel.org,
	Guenter Roeck <linux@...ck-us.net>,
	Will Deacon <will.deacon@....com>,
	dri-devel@...ts.freedesktop.org,
	Kever Yang <kever.yang@...k-chips.com>,
	Kumar Gala <galak@...eaurora.org>,
	linux-kernel@...r.kernel.org,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Rob Herring <robh+dt@...nel.org>,
	Mark Yao <mark.yao@...k-chips.com>,
	Pawel Moll <pawel.moll@....com>,
	Kishon Vijay Abraham I <kishon@...com>,
	Mark Rutland <mark.rutland@....com>,
	Catalin Marinas <catalin.marinas@....com>,
	linux-arm-kernel@...ts.infradead.org,
	David Airlie <airlied@...ux.ie>,
	"cpgs (cpgs@...sung.com)" <cpgs@...sung.com>
Subject: Re: [v10 PATCH 0/5] Rockchip Type-C and DisplayPort driver

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.

[snip]

Regards,
Chanwoo Choi