linux-kernel - [PATCH 0/4] Move DP phy switch to PHY driver

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Date:   Fri, 10 Feb 2017 15:44:10 +0800
From:   Chris Zhong <zyw@...k-chips.com>
To:     dri-devel@...ts.freedesktop.org, kishon@...com, robh@...nel.org,
        linux-rockchip@...ts.infradead.org
Cc:     linux-kernel@...r.kernel.org, mark.yao@...k-chips.com,
        groeck@...omium.org, seanpaul@...omium.org, zyw@...k-chips.com,
        William wu <wulf@...k-chips.com>,
        Rob Herring <robh+dt@...nel.org>,
        David Airlie <airlied@...ux.ie>,
        Shawn Lin <shawn.lin@...k-chips.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Elaine Zhang <zhangqing@...k-chips.com>,
        David Wu <david.wu@...k-chips.com>,
        Heiko Stuebner <heiko@...ech.de>,
        Kever Yang <kever.yang@...k-chips.com>,
        Brian Norris <briannorris@...omium.org>,
        Tomasz Figa <tfiga@...omium.org>,
        Douglas Anderson <dianders@...omium.org>,
        Will Deacon <will.deacon@....com>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Jianqun Xu <jay.xu@...k-chips.com>,
        Caesar Wang <wxt@...k-chips.com>,
        Mark Rutland <mark.rutland@....com>
Subject: [PATCH 0/4] Move DP phy switch to PHY driver


There are 2 Type-c PHYs in RK3399, but only one DP controller. Hence
only one PHY can connect to DP controller at one time, the other should
be disconnected. The GRF_SOC_CON26 register has a switch bit to do it,
set this bit means enable PHY 1, clear this bit means enable PHY 0.

If the board has 2 Type-C ports, the DP driver get the phy id from
devm_of_phy_get_by_index, and then control this switch according to
this id. But some others board only has one Type-C port, it may be PHY 0
or PHY 1. The dts node id can not tell us the correct PHY id. Hence move
this switch to PHY driver, the PHY driver can distinguish between PHY 0
and PHY 1, and then write the correct register bit.



Chris Zhong (4):
  Documentation: bindings: add uphy-dp-sel for Rockchip USB Type-C PHY
  arm64: dts: rockchip: add rockchip,uphy-dp-sel for Type-C phy
  phy: rockchip-typec: support DP phy switch
  drm/rockchip: cdn-dp: remove the DP phy switch

 Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt | 5 +++++
 arch/arm64/boot/dts/rockchip/rk3399.dtsi                     | 2 ++
 drivers/gpu/drm/rockchip/cdn-dp-core.c                       | 7 -------
 drivers/phy/phy-rockchip-typec.c                             | 9 +++++++++
 4 files changed, 16 insertions(+), 7 deletions(-)

-- 
2.6.3