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reset: hisilicon: document hisi-hi6220 reset controllers bindings
Add DT bindings documentation for hi6220 SoC reset controller. Signed-off-by: Chen Feng <puck.chen@hisilicon.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Acked-by: Rob Herring <robh@kernel.org>
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Hisilicon System Reset Controller
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======================================
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Please also refer to reset.txt in this directory for common reset
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controller binding usage.
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The reset controller registers are part of the system-ctl block on
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hi6220 SoC.
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Required properties:
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- compatible: may be "hisilicon,hi6220-sysctrl"
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- reg: should be register base and length as documented in the
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datasheet
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- #reset-cells: 1, see below
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Example:
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sys_ctrl: sys_ctrl@f7030000 {
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compatible = "hisilicon,hi6220-sysctrl", "syscon";
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reg = <0x0 0xf7030000 0x0 0x2000>;
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#clock-cells = <1>;
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#reset-cells = <1>;
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};
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Specifying reset lines connected to IP modules
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==============================================
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example:
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uart1: serial@..... {
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...
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resets = <&sys_ctrl PERIPH_RSTEN3_UART1>;
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...
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};
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The index could be found in <dt-bindings/reset/hisi,hi6220-resets.h>.
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include/dt-bindings/reset/hisi,hi6220-resets.h
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include/dt-bindings/reset/hisi,hi6220-resets.h
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/**
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* This header provides index for the reset controller
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* based on hi6220 SoC.
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*/
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#ifndef _DT_BINDINGS_RESET_CONTROLLER_HI6220
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#define _DT_BINDINGS_RESET_CONTROLLER_HI6220
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#define PERIPH_RSTDIS0_MMC0 0x000
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#define PERIPH_RSTDIS0_MMC1 0x001
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#define PERIPH_RSTDIS0_MMC2 0x002
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#define PERIPH_RSTDIS0_NANDC 0x003
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#define PERIPH_RSTDIS0_USBOTG_BUS 0x004
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#define PERIPH_RSTDIS0_POR_PICOPHY 0x005
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#define PERIPH_RSTDIS0_USBOTG 0x006
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#define PERIPH_RSTDIS0_USBOTG_32K 0x007
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#define PERIPH_RSTDIS1_HIFI 0x100
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#define PERIPH_RSTDIS1_DIGACODEC 0x105
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#define PERIPH_RSTEN2_IPF 0x200
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#define PERIPH_RSTEN2_SOCP 0x201
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#define PERIPH_RSTEN2_DMAC 0x202
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#define PERIPH_RSTEN2_SECENG 0x203
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#define PERIPH_RSTEN2_ABB 0x204
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#define PERIPH_RSTEN2_HPM0 0x205
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#define PERIPH_RSTEN2_HPM1 0x206
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#define PERIPH_RSTEN2_HPM2 0x207
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#define PERIPH_RSTEN2_HPM3 0x208
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#define PERIPH_RSTEN3_CSSYS 0x300
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#define PERIPH_RSTEN3_I2C0 0x301
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#define PERIPH_RSTEN3_I2C1 0x302
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#define PERIPH_RSTEN3_I2C2 0x303
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#define PERIPH_RSTEN3_I2C3 0x304
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#define PERIPH_RSTEN3_UART1 0x305
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#define PERIPH_RSTEN3_UART2 0x306
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#define PERIPH_RSTEN3_UART3 0x307
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#define PERIPH_RSTEN3_UART4 0x308
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#define PERIPH_RSTEN3_SSP 0x309
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#define PERIPH_RSTEN3_PWM 0x30a
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#define PERIPH_RSTEN3_BLPWM 0x30b
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#define PERIPH_RSTEN3_TSENSOR 0x30c
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#define PERIPH_RSTEN3_DAPB 0x312
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#define PERIPH_RSTEN3_HKADC 0x313
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#define PERIPH_RSTEN3_CODEC_SSI 0x314
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#define PERIPH_RSTEN3_PMUSSI1 0x316
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#define PERIPH_RSTEN8_RS0 0x400
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#define PERIPH_RSTEN8_RS2 0x401
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#define PERIPH_RSTEN8_RS3 0x402
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#define PERIPH_RSTEN8_MS0 0x403
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#define PERIPH_RSTEN8_MS2 0x405
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#define PERIPH_RSTEN8_XG2RAM0 0x406
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#define PERIPH_RSTEN8_X2SRAM_TZMA 0x407
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#define PERIPH_RSTEN8_SRAM 0x408
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#define PERIPH_RSTEN8_HARQ 0x40a
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#define PERIPH_RSTEN8_DDRC 0x40c
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#define PERIPH_RSTEN8_DDRC_APB 0x40d
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#define PERIPH_RSTEN8_DDRPACK_APB 0x40e
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#define PERIPH_RSTEN8_DDRT 0x411
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#define PERIPH_RSDIST9_CARM_DAP 0x500
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#define PERIPH_RSDIST9_CARM_ATB 0x501
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#define PERIPH_RSDIST9_CARM_LBUS 0x502
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#define PERIPH_RSDIST9_CARM_POR 0x503
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#define PERIPH_RSDIST9_CARM_CORE 0x504
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#define PERIPH_RSDIST9_CARM_DBG 0x505
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#define PERIPH_RSDIST9_CARM_L2 0x506
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#define PERIPH_RSDIST9_CARM_SOCDBG 0x507
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#define PERIPH_RSDIST9_CARM_ETM 0x508
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#endif /*_DT_BINDINGS_RESET_CONTROLLER_HI6220*/
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