From 7ce11d4704c080ab890831b8255fbba4d2b0c5ec Mon Sep 17 00:00:00 2001 From: Suman Anna Date: Tue, 1 Jun 2021 10:00:32 -0500 Subject: [PATCH] arm64: dts: ti: k3-j721e-main: Add ICSSG MDIO nodes The ICSSGs on K3 J721E SoCs contain an MDIO controller that can be used to control external PHYs associated with the Industrial Ethernet peripherals within each ICSSG instance. The MDIO module used within the ICSSG is similar to the MDIO Controller used in TI Davinci SoCs. A bus frequency of 1 MHz is chosen for the MDIO operations. The nodes are added and enabled in the common k3-j721e-main.dtsi file by default, and disabled in the existing J721E board dts file. These nodes need pinctrl lines, and so should be enabled only on boards where they are actually wired and pinned out for ICSSG Ethernet. Any new board dts file should disable these if they are not sure. Signed-off-by: Suman Anna Reviewed-by: Grygorii Strashko Signed-off-by: Nishanth Menon Link: https://lore.kernel.org/r/20210601150032.11432-3-s-anna@ti.com --- .../arm64/boot/dts/ti/k3-j721e-common-proc-board.dts | 8 ++++++++ arch/arm64/boot/dts/ti/k3-j721e-main.dtsi | 20 ++++++++++++++++++++ 2 files changed, 28 insertions(+) diff --git a/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts b/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts index 351bb84..1991f62 100644 --- a/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts +++ b/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts @@ -718,3 +718,11 @@ &dss { status = "disabled"; }; + +&icssg0_mdio { + status = "disabled"; +}; + +&icssg1_mdio { + status = "disabled"; +}; diff --git a/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi b/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi index 3bcafe4..5986138 100644 --- a/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi +++ b/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi @@ -1794,6 +1794,16 @@ reg-names = "iram", "control", "debug"; firmware-name = "j7-txpru0_1-fw"; }; + + icssg0_mdio: mdio@32400 { + compatible = "ti,davinci_mdio"; + reg = <0x32400 0x100>; + clocks = <&k3_clks 119 1>; + clock-names = "fck"; + #address-cells = <1>; + #size-cells = <0>; + bus_freq = <1000000>; + }; }; icssg1: icssg@b100000 { @@ -1925,5 +1935,15 @@ reg-names = "iram", "control", "debug"; firmware-name = "j7-txpru1_1-fw"; }; + + icssg1_mdio: mdio@32400 { + compatible = "ti,davinci_mdio"; + reg = <0x32400 0x100>; + clocks = <&k3_clks 120 4>; + clock-names = "fck"; + #address-cells = <1>; + #size-cells = <0>; + bus_freq = <1000000>; + }; }; }; -- 2.7.4