From 984ba7ee456b716e2667903686ad5ee944c249ba Mon Sep 17 00:00:00 2001 From: Suman Anna Date: Thu, 29 Jul 2021 17:46:12 -0500 Subject: ARM: dts: am33xx-l4: Add PRUSS MDIO controller node The PRUSS on AM335x SoCs has a MDIO sub-module that can be used to control external PHYs associated with the Industrial Ethernet peripherals within the PRUSS. The MDIO module used within the PRU-ICSS is an instance of the MDIO Controller used in TI Davinci SoCs. The same bus frequency of 1 MHz is chosen as the regular MDIO node. The node is added to the common am33xx-l4.dtsi file and is disabled. This needs to be enabled in the respective board files using the relevant AM335x SoCs supporting PRUSS and where the ethernet is pinned out and connected properly. Signed-off-by: Suman Anna Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/am33xx-l4.dtsi | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/arm/boot/dts/am33xx-l4.dtsi b/arch/arm/boot/dts/am33xx-l4.dtsi index 148176361b4e..c9629cb5ccd1 100644 --- a/arch/arm/boot/dts/am33xx-l4.dtsi +++ b/arch/arm/boot/dts/am33xx-l4.dtsi @@ -923,6 +923,17 @@ reg-names = "iram", "control", "debug"; firmware-name = "am335x-pru1-fw"; }; + + pruss_mdio: mdio@32400 { + compatible = "ti,davinci_mdio"; + reg = <0x32400 0x90>; + clocks = <&dpll_core_m4_ck>; + clock-names = "fck"; + bus_freq = <1000000>; + #address-cells = <1>; + #size-cells = <0>; + status = "disabled"; + }; }; }; }; -- cgit