1Marvell Armada AP80x System Controller 2====================================== 3 4The AP806/AP807 is one of the two core HW blocks of the Marvell Armada 57K/8K/931x SoCs. It contains system controllers, which provide several 6registers giving access to numerous features: clocks, pin-muxing and 7many other SoC configuration items. This DT binding allows to describe 8these system controllers. 9 10For the top level node: 11 - compatible: must be: "syscon", "simple-mfd"; 12 - reg: register area of the AP80x system controller 13 14SYSTEM CONTROLLER 0 15=================== 16 17Clocks: 18------- 19 20 21The Device Tree node representing the AP806/AP807 system controller 22provides a number of clocks: 23 24 - 0: reference clock of CPU cluster 0 25 - 1: reference clock of CPU cluster 1 26 - 2: fixed PLL at 1200 Mhz 27 - 3: MSS clock, derived from the fixed PLL 28 29Required properties: 30 31 - compatible: must be one of: 32 * "marvell,ap806-clock" 33 * "marvell,ap807-clock" 34 - #clock-cells: must be set to 1 35 36Pinctrl: 37-------- 38 39For common binding part and usage, refer to 40Documentation/devicetree/bindings/pinctrl/marvell,mvebu-pinctrl.txt. 41 42Required properties: 43- compatible must be "marvell,ap806-pinctrl", 44 45Available mpp pins/groups and functions: 46Note: brackets (x) are not part of the mpp name for marvell,function and given 47only for more detailed description in this document. 48 49name pins functions 50================================================================================ 51mpp0 0 gpio, sdio(clk), spi0(clk) 52mpp1 1 gpio, sdio(cmd), spi0(miso) 53mpp2 2 gpio, sdio(d0), spi0(mosi) 54mpp3 3 gpio, sdio(d1), spi0(cs0n) 55mpp4 4 gpio, sdio(d2), i2c0(sda) 56mpp5 5 gpio, sdio(d3), i2c0(sdk) 57mpp6 6 gpio, sdio(ds) 58mpp7 7 gpio, sdio(d4), uart1(rxd) 59mpp8 8 gpio, sdio(d5), uart1(txd) 60mpp9 9 gpio, sdio(d6), spi0(cs1n) 61mpp10 10 gpio, sdio(d7) 62mpp11 11 gpio, uart0(txd) 63mpp12 12 gpio, sdio(pw_off), sdio(hw_rst) 64mpp13 13 gpio 65mpp14 14 gpio 66mpp15 15 gpio 67mpp16 16 gpio 68mpp17 17 gpio 69mpp18 18 gpio 70mpp19 19 gpio, uart0(rxd), sdio(pw_off) 71 72GPIO: 73----- 74For common binding part and usage, refer to 75Documentation/devicetree/bindings/gpio/gpio-mvebu.txt. 76 77Required properties: 78 79- compatible: "marvell,armada-8k-gpio" 80 81- offset: offset address inside the syscon block 82 83Optional properties: 84 85- marvell,pwm-offset: offset address of PWM duration control registers inside 86 the syscon block 87 88Example: 89ap_syscon: system-controller@6f4000 { 90 compatible = "syscon", "simple-mfd"; 91 reg = <0x6f4000 0x1000>; 92 93 ap_clk: clock { 94 compatible = "marvell,ap806-clock"; 95 #clock-cells = <1>; 96 }; 97 98 ap_pinctrl: pinctrl { 99 compatible = "marvell,ap806-pinctrl"; 100 }; 101 102 ap_gpio: gpio { 103 compatible = "marvell,armada-8k-gpio"; 104 offset = <0x1040>; 105 ngpios = <19>; 106 gpio-controller; 107 #gpio-cells = <2>; 108 gpio-ranges = <&ap_pinctrl 0 0 19>; 109 marvell,pwm-offset = <0x10c0>; 110 #pwm-cells = <2>; 111 clocks = <&ap_clk 3>; 112 }; 113}; 114 115SYSTEM CONTROLLER 1 116=================== 117 118Thermal: 119-------- 120 121For common binding part and usage, refer to 122Documentation/devicetree/bindings/thermal/thermal*.yaml 123 124The thermal IP can probe the temperature all around the processor. It 125may feature several channels, each of them wired to one sensor. 126 127It is possible to setup an overheat interrupt by giving at least one 128critical point to any subnode of the thermal-zone node. 129 130Required properties: 131- compatible: must be one of: 132 * marvell,armada-ap806-thermal 133- reg: register range associated with the thermal functions. 134 135Optional properties: 136- interrupts: overheat interrupt handle. Should point to line 18 of the 137 SEI irqchip. See interrupt-controller/interrupts.txt 138- #thermal-sensor-cells: shall be <1> when thermal-zones subnodes refer 139 to this IP and represents the channel ID. There is one sensor per 140 channel. O refers to the thermal IP internal channel, while positive 141 IDs refer to each CPU. 142 143Example: 144ap_syscon1: system-controller@6f8000 { 145 compatible = "syscon", "simple-mfd"; 146 reg = <0x6f8000 0x1000>; 147 148 ap_thermal: thermal-sensor@80 { 149 compatible = "marvell,armada-ap806-thermal"; 150 reg = <0x80 0x10>; 151 interrupt-parent = <&sei>; 152 interrupts = <18>; 153 #thermal-sensor-cells = <1>; 154 }; 155}; 156 157Cluster clocks: 158--------------- 159 160Device Tree Clock bindings for cluster clock of Marvell 161AP806/AP807. Each cluster contain up to 2 CPUs running at the same 162frequency. 163 164Required properties: 165 - compatible: must be one of: 166 * "marvell,ap806-cpu-clock" 167 * "marvell,ap807-cpu-clock" 168- #clock-cells : should be set to 1. 169 170- clocks : shall be the input parent clock(s) phandle for the clock 171 (one per cluster) 172 173- reg: register range associated with the cluster clocks 174 175ap_syscon1: system-controller@6f8000 { 176 compatible = "marvell,armada-ap806-syscon1", "syscon", "simple-mfd"; 177 reg = <0x6f8000 0x1000>; 178 179 cpu_clk: clock-cpu@278 { 180 compatible = "marvell,ap806-cpu-clock"; 181 clocks = <&ap_clk 0>, <&ap_clk 1>; 182 #clock-cells = <1>; 183 reg = <0x278 0xa30>; 184 }; 185}; 186