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Message-Id: <1526895424-22894-2-git-send-email-hl@rock-chips.com>
Date: Mon, 21 May 2018 17:37:01 +0800
From: Lin Huang <hl@...k-chips.com>
To: seanpaul@...omium.org, airlied@...ux.ie, zyw@...k-chips.com,
kishon@...com
Cc: dianders@...omium.org, briannorris@...omium.org,
linux-rockchip@...ts.infradead.org, heiko@...ech.de,
daniel.vetter@...el.com, jani.nikula@...ux.intel.com,
dri-devel@...ts.freedesktop.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
eballetbo@...il.com, robh+dt@...nel.org,
devicetree@...r.kernel.org, Lin Huang <hl@...k-chips.com>
Subject: [PATCH v6 2/5] Documentation: dt-bindings: phy: add phy_config for Rockchip USB Type-C PHY
If want to do training outside DP Firmware, need phy voltage swing
and pre_emphasis value.
Signed-off-by: Lin Huang <hl@...k-chips.com>
---
Changes in v2:
- None
Changes in v3:
- modify property description and add this property to Example
Changes in v4:
- None
Changes in v5:
- None
Changes in v6:
- change rockchip,phy_config to rockchip,phy-config and descript it in detail.
.../devicetree/bindings/phy/phy-rockchip-typec.txt | 36 +++++++++++++++++++++-
1 file changed, 35 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt b/Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt
index 960da7f..40d5e7a 100644
--- a/Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt
+++ b/Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt
@@ -17,7 +17,11 @@ Required properties:
Optional properties:
- extcon : extcon specifier for the Power Delivery
-
+ - rockchip,phy-config : A list of voltage swing(mV) and pre-emphasis
+ (dB) pairs. They are 3 blocks of 4 entries and
+ correspond to s0p0 ~ s0p3, s1p0 ~ s1p3,
+ s2p0 ~ s2p3, s3p0 ~ s2p3 swing and pre-emphasis
+ values.
Required nodes : a sub-node is required for each port the phy provides.
The sub-node name is used to identify dp or usb3 port,
and shall be the following entries:
@@ -50,6 +54,21 @@ Example:
<&cru SRST_P_UPHY0_TCPHY>;
reset-names = "uphy", "uphy-pipe", "uphy-tcphy";
+ rockchip,phy-config = <0x2a 0x00>,
+ <0x1f 0x15>,
+ <0x14 0x22>,
+ <0x02 0x2b>,
+
+ <0x21 0x00>,
+ <0x12 0x15>,
+ <0x02 0x22>,
+ <0 0>,
+
+ <0x15 0x00>,
+ <0x00 0x15>,
+ <0 0>,
+ <0 0>;
+
tcphy0_dp: dp-port {
#phy-cells = <0>;
};
@@ -74,6 +93,21 @@ Example:
<&cru SRST_P_UPHY1_TCPHY>;
reset-names = "uphy", "uphy-pipe", "uphy-tcphy";
+ rockchip,phy-config = <0x2a 0x00>,
+ <0x1f 0x15>,
+ <0x14 0x22>,
+ <0x02 0x2b>,
+
+ <0x21 0x00>,
+ <0x12 0x15>,
+ <0x02 0x22>,
+ <0 0>,
+
+ <0x15 0x00>,
+ <0x00 0x15>,
+ <0 0>,
+ <0 0>;
+
tcphy1_dp: dp-port {
#phy-cells = <0>;
};
--
2.7.4
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