From: Andrew F. Davis Date: Thu, 29 Jul 2021 22:46:19 +0000 (-0500) Subject: ARM: dts: am4372: Add PRUSS MDIO controller node X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=670be468b3f3177fe5e22fede270a7b158f0d7c6;p=linux.git ARM: dts: am4372: Add PRUSS MDIO controller node The PRU-ICSS1 instance on AM437x 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 this 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. Note that there is no MDIO node added to the smaller PRU-ICSS0 instance as the MDIO pins are not pinned out. The node is added and enabled in the common am4372.dtsi file by default, and disabled in all the existing AM437x board dts files. This node needs pinctrl lines, and so should be enabled only on boards where they are actually wired and pinned out for PRUSS Ethernet. Any new board dts file should disable these if they are not sure. Signed-off-by: Andrew F. Davis [s-anna@ti.com: fix reg address, add commit description] Signed-off-by: Suman Anna Signed-off-by: Tony Lindgren --- diff --git a/arch/arm/boot/dts/am4372.dtsi b/arch/arm/boot/dts/am4372.dtsi index 2200a09c20656..61a1d88f9df68 100644 --- a/arch/arm/boot/dts/am4372.dtsi +++ b/arch/arm/boot/dts/am4372.dtsi @@ -511,6 +511,16 @@ reg-names = "iram", "control", "debug"; firmware-name = "am437x-pru1_1-fw"; }; + + pruss1_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>; + }; }; pruss0: pruss@40000 { diff --git a/arch/arm/boot/dts/am437x-cm-t43.dts b/arch/arm/boot/dts/am437x-cm-t43.dts index a83f46ed0c9af..5ce8e684e7d35 100644 --- a/arch/arm/boot/dts/am437x-cm-t43.dts +++ b/arch/arm/boot/dts/am437x-cm-t43.dts @@ -416,3 +416,7 @@ <600000 1100000>, <300000 950000>; }; + +&pruss1_mdio { + status = "disabled"; +}; diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts index e2677682b540c..c2e4896076e7f 100644 --- a/arch/arm/boot/dts/am437x-gp-evm.dts +++ b/arch/arm/boot/dts/am437x-gp-evm.dts @@ -1118,3 +1118,7 @@ &cpu { cpu0-supply = <&dcdc2>; }; + +&pruss1_mdio { + status = "disabled"; +}; diff --git a/arch/arm/boot/dts/am437x-idk-evm.dts b/arch/arm/boot/dts/am437x-idk-evm.dts index 2dc5255122668..53f64e3ce7356 100644 --- a/arch/arm/boot/dts/am437x-idk-evm.dts +++ b/arch/arm/boot/dts/am437x-idk-evm.dts @@ -537,3 +537,7 @@ opp-suspend; }; }; + +&pruss1_mdio { + status = "disabled"; +}; diff --git a/arch/arm/boot/dts/am437x-sk-evm.dts b/arch/arm/boot/dts/am437x-sk-evm.dts index 496ed34f77551..20a34d2d85df9 100644 --- a/arch/arm/boot/dts/am437x-sk-evm.dts +++ b/arch/arm/boot/dts/am437x-sk-evm.dts @@ -892,3 +892,7 @@ }; }; }; + +&pruss1_mdio { + status = "disabled"; +}; diff --git a/arch/arm/boot/dts/am43x-epos-evm.dts b/arch/arm/boot/dts/am43x-epos-evm.dts index aae0af10a5b1f..d16aa2221c910 100644 --- a/arch/arm/boot/dts/am43x-epos-evm.dts +++ b/arch/arm/boot/dts/am43x-epos-evm.dts @@ -1018,3 +1018,7 @@ &cpu { cpu0-supply = <&dcdc2>; }; + +&pruss1_mdio { + status = "disabled"; +};