linux-kernel - [PATCH v2 2/5] dt-bindings: display: rockchip-dsi: document external phys

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Message-Id: <20191108000253.8560-3-heiko.stuebner@theobroma-systems.com>
Date:   Fri,  8 Nov 2019 01:02:50 +0100
From:   Heiko Stuebner <heiko.stuebner@...obroma-systems.com>
To:     dri-devel@...ts.freedesktop.org, a.hajda@...sung.com
Cc:     hjc@...k-chips.com, robh+dt@...nel.org, mark.rutland@....com,
        narmstrong@...libre.com, Laurent.pinchart@...asonboard.com,
        jonas@...boo.se, jernej.skrabec@...l.net, philippe.cornu@...com,
        yannick.fertre@...com, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        heiko@...ech.de, christoph.muellner@...obroma-systems.com,
        Heiko Stuebner <heiko.stuebner@...obroma-systems.com>
Subject: [PATCH v2 2/5] dt-bindings: display: rockchip-dsi: document external phys

Some dw-mipi-dsi instances in Rockchip SoCs use external dphys.
In these cases the needs clock will also be generated externally
so these don't need the ref-clock as well.

Signed-off-by: Heiko Stuebner <heiko.stuebner@...obroma-systems.com>
---
 .../bindings/display/rockchip/dw_mipi_dsi_rockchip.txt     | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/rockchip/dw_mipi_dsi_rockchip.txt b/Documentation/devicetree/bindings/display/rockchip/dw_mipi_dsi_rockchip.txt
index ce4c1fc9116c..1ba9237d0ac0 100644
--- a/Documentation/devicetree/bindings/display/rockchip/dw_mipi_dsi_rockchip.txt
+++ b/Documentation/devicetree/bindings/display/rockchip/dw_mipi_dsi_rockchip.txt
@@ -9,8 +9,9 @@ Required properties:
 - reg: Represent the physical address range of the controller.
 - interrupts: Represent the controller's interrupt to the CPU(s).
 - clocks, clock-names: Phandles to the controller's pll reference
-  clock(ref) and APB clock(pclk). For RK3399, a phy config clock
-  (phy_cfg) and a grf clock(grf) are required. As described in [1].
+  clock(ref) when using an internal dphy and APB clock(pclk).
+  For RK3399, a phy config clock (phy_cfg) and a grf clock(grf)
+  are required. As described in [1].
 - rockchip,grf: this soc should set GRF regs to mux vopl/vopb.
 - ports: contain a port node with endpoint definitions as defined in [2].
   For vopb,set the reg = <0> and set the reg = <1> for vopl.
@@ -18,6 +19,8 @@ Required properties:
 - video port 1 for either a panel or subsequent encoder
 
 Optional properties:
+- phys: from general PHY binding: the phandle for the PHY device.
+- phy-names: Should be "dphy" if phys references an external phy.
 - power-domains: a phandle to mipi dsi power domain node.
 - resets: list of phandle + reset specifier pairs, as described in [3].
 - reset-names: string reset name, must be "apb".
-- 
2.23.0