1*90541270SAkhila YS# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) 2*90541270SAkhila YS%YAML 1.2 3*90541270SAkhila YS--- 4*90541270SAkhila YS$id: http://devicetree.org/schemas/mtd/st,spi-fsm.yaml# 5*90541270SAkhila YS$schema: http://devicetree.org/meta-schemas/core.yaml# 6*90541270SAkhila YS 7*90541270SAkhila YStitle: STMicroelectronics SPI FSM Serial NOR Flash Controller 8*90541270SAkhila YS 9*90541270SAkhila YSmaintainers: 10*90541270SAkhila YS - Angus Clark <angus.clark@st.com> 11*90541270SAkhila YS 12*90541270SAkhila YSdescription: 13*90541270SAkhila YS The STMicroelectronics Fast Sequence Mode (FSM) controller is a dedicated 14*90541270SAkhila YS hardware accelerator integrated in older STiH4xx/STiDxxx set-top box SoCs 15*90541270SAkhila YS (such as STiH407, STiH416, STiD127). It connects directly to a single 16*90541270SAkhila YS external serial flash device used as the primary boot device. The FSM 17*90541270SAkhila YS executes hard-coded or configurable instruction sequences in hardware, 18*90541270SAkhila YS providing low-latency reads suitable for execute-in-place (XIP) boot 19*90541270SAkhila YS and high read bandwidth. 20*90541270SAkhila YS 21*90541270SAkhila YSproperties: 22*90541270SAkhila YS compatible: 23*90541270SAkhila YS const: st,spi-fsm 24*90541270SAkhila YS 25*90541270SAkhila YS reg: 26*90541270SAkhila YS maxItems: 1 27*90541270SAkhila YS 28*90541270SAkhila YS reg-names: 29*90541270SAkhila YS const: spi-fsm 30*90541270SAkhila YS 31*90541270SAkhila YS interrupts: 32*90541270SAkhila YS maxItems: 1 33*90541270SAkhila YS 34*90541270SAkhila YS st,syscfg: 35*90541270SAkhila YS $ref: /schemas/types.yaml#/definitions/phandle 36*90541270SAkhila YS description: Phandle to the system configuration registers used for boot-device selection. 37*90541270SAkhila YS 38*90541270SAkhila YS st,boot-device-reg: 39*90541270SAkhila YS $ref: /schemas/types.yaml#/definitions/uint32 40*90541270SAkhila YS description: Offset of the boot-device register within the st,syscfg node. 41*90541270SAkhila YS 42*90541270SAkhila YS st,boot-device-spi: 43*90541270SAkhila YS $ref: /schemas/types.yaml#/definitions/uint32 44*90541270SAkhila YS description: Expected boot-device value when booting from this SPI controller. 45*90541270SAkhila YS 46*90541270SAkhila YSrequired: 47*90541270SAkhila YS - compatible 48*90541270SAkhila YS - reg 49*90541270SAkhila YS - reg-names 50*90541270SAkhila YS - interrupts 51*90541270SAkhila YS - pinctrl-0 52*90541270SAkhila YS 53*90541270SAkhila YSunevaluatedProperties: false 54*90541270SAkhila YS 55*90541270SAkhila YSexamples: 56*90541270SAkhila YS - | 57*90541270SAkhila YS #include <dt-bindings/interrupt-controller/arm-gic.h> 58*90541270SAkhila YS spifsm@fe902000 { 59*90541270SAkhila YS compatible = "st,spi-fsm"; 60*90541270SAkhila YS reg = <0xfe902000 0x1000>; 61*90541270SAkhila YS reg-names = "spi-fsm"; 62*90541270SAkhila YS interrupts = <GIC_SPI 64 IRQ_TYPE_LEVEL_HIGH>; 63*90541270SAkhila YS pinctrl-0 = <&pinctrl_fsm>; 64*90541270SAkhila YS st,syscfg = <&syscfg_rear>; 65*90541270SAkhila YS st,boot-device-reg = <0x958>; 66*90541270SAkhila YS st,boot-device-spi = <0x1a>; 67*90541270SAkhila YS }; 68*90541270SAkhila YS... 69