From d49a769dcddd4224bd631792a4d2e5bbb160aa20 Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Tue, 1 Jun 2021 10:00:31 -0500 Subject: arm64: dts: ti: k3-am65-main: Add ICSSG MDIO nodes The ICSSGs on K3 AM65x 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-am65-main.dtsi file by default, and disabled in the existing AM65 board dts files. 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: Roger Quadros [s-anna@ti.com: move the disabled status to board dts files] Signed-off-by: Suman Anna Reviewed-by: Grygorii Strashko Acked-by: Jan Kiszka Signed-off-by: Nishanth Menon Link: https://lore.kernel.org/r/20210601150032.11432-2-s-anna@ti.com --- arch/arm64/boot/dts/ti/k3-am65-main.dtsi | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) (limited to 'arch/arm64/boot/dts/ti/k3-am65-main.dtsi') diff --git a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi index f97fc00c00ca..e679394d0b7e 100644 --- a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi @@ -1052,6 +1052,16 @@ reg-names = "iram", "control", "debug"; firmware-name = "am65x-txpru0_1-fw"; }; + + icssg0_mdio: mdio@32400 { + compatible = "ti,davinci_mdio"; + reg = <0x32400 0x100>; + clocks = <&k3_clks 62 3>; + clock-names = "fck"; + #address-cells = <1>; + #size-cells = <0>; + bus_freq = <1000000>; + }; }; icssg1: icssg@b100000 { @@ -1183,6 +1193,16 @@ reg-names = "iram", "control", "debug"; firmware-name = "am65x-txpru1_1-fw"; }; + + icssg1_mdio: mdio@32400 { + compatible = "ti,davinci_mdio"; + reg = <0x32400 0x100>; + clocks = <&k3_clks 63 3>; + clock-names = "fck"; + #address-cells = <1>; + #size-cells = <0>; + bus_freq = <1000000>; + }; }; icssg2: icssg@b200000 { @@ -1314,5 +1334,15 @@ reg-names = "iram", "control", "debug"; firmware-name = "am65x-txpru2_1-fw"; }; + + icssg2_mdio: mdio@32400 { + compatible = "ti,davinci_mdio"; + reg = <0x32400 0x100>; + clocks = <&k3_clks 64 3>; + clock-names = "fck"; + #address-cells = <1>; + #size-cells = <0>; + bus_freq = <1000000>; + }; }; }; -- cgit