lkml.org 
[lkml]   [2020]   [Jul]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v1 5/5] ARM: dts: imx6qp: support improved enet clocking on QuadPlus
Date
Board designers are now able to choose between all three supported
enet clocking methods, by changing the clocktree via the devicetree:

a) route enet_ref externally from pad to pad (the default):

no clock tree changes required

b) route internally on SoC from enet_ref

&fec {
assigned-clocks = <&clks IMX6QDL_CLK_ENET_PTP>,
<&clks IMX6QDL_CLK_ENET_REF>;
assigned-clock-parents = <&clks IMX6QDL_CLK_ENET_REF>;
assigned-clock-rates = <0>, <125000000>;
};

c) route external clock (from PHY or oscillator) via pad

/ {
clocks {
phy_osc: anaclk3 {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <125000000>;
};
};
};

&fec {
assigned-clocks = <&clks IMX6QDL_CLK_ENET_PTP>,
<&clks IMX6QDL_CLK_ENET_PAD>;
assigned-clock-parents = <&clks IMX6QDL_CLK_ENET_PAD>,
<&clks IMX6QDL_CLK_ANACLK3>;
};

Signed-off-by: Sven Van Asbroeck <TheSven73@gmail.com>
---

Tree: v5.8-rc4

To: Shawn Guo <shawnguo@kernel.org>
To: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-clk@vger.kernel.org

arch/arm/boot/dts/imx6qp.dtsi | 3 +++
1 file changed, 3 insertions(+)

diff --git a/arch/arm/boot/dts/imx6qp.dtsi b/arch/arm/boot/dts/imx6qp.dtsi
index b310f13a53f2..7f81d35f56c9 100644
--- a/arch/arm/boot/dts/imx6qp.dtsi
+++ b/arch/arm/boot/dts/imx6qp.dtsi
@@ -79,6 +79,9 @@
&fec {
interrupts = <0 118 IRQ_TYPE_LEVEL_HIGH>,
<0 119 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clks IMX6QDL_CLK_ENET>,
+ <&clks IMX6QDL_CLK_ENET>,
+ <&clks IMX6QDL_CLK_ENET_PTP>;
};

&gpc {
--
2.17.1
\
 
 \ /
  Last update: 2020-07-13 02:26    [W:0.682 / U:26.440 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site