Add Reset Driver configuration to ast2500 SoC Device Tree and bindings for various reset signals
Signed-off-by: Maxim Sloyko maxims@google.com Reviewed-by: Simon Glass sjg@chromium.org ---
Changes in v2: None Changes in v1: None
arch/arm/dts/ast2500-evb.dts | 15 +++++++++++ arch/arm/dts/ast2500-u-boot.dtsi | 10 +++++++ include/dt-bindings/reset/ast2500-reset.h | 45 +++++++++++++++++++++++++++++++ 3 files changed, 70 insertions(+) create mode 100644 include/dt-bindings/reset/ast2500-reset.h
diff --git a/arch/arm/dts/ast2500-evb.dts b/arch/arm/dts/ast2500-evb.dts index dc13952fb8..723941ac0b 100644 --- a/arch/arm/dts/ast2500-evb.dts +++ b/arch/arm/dts/ast2500-evb.dts @@ -21,3 +21,18 @@ &sdrammc { clock-frequency = <400000000>; }; + +&wdt1 { + u-boot,dm-pre-reloc; + status = "okay"; +}; + +&wdt2 { + u-boot,dm-pre-reloc; + status = "okay"; +}; + +&wdt3 { + u-boot,dm-pre-reloc; + status = "okay"; +}; diff --git a/arch/arm/dts/ast2500-u-boot.dtsi b/arch/arm/dts/ast2500-u-boot.dtsi index c95a7ba835..faeeec1be4 100644 --- a/arch/arm/dts/ast2500-u-boot.dtsi +++ b/arch/arm/dts/ast2500-u-boot.dtsi @@ -1,4 +1,5 @@ #include <dt-bindings/clock/ast2500-scu.h> +#include <dt-bindings/reset/ast2500-reset.h>
#include "ast2500.dtsi"
@@ -11,12 +12,21 @@ #reset-cells = <1>; };
+ rst: reset-controller { + u-boot,dm-pre-reloc; + compatible = "aspeed,ast2500-reset"; + aspeed,wdt = <&wdt1>; + #reset-cells = <1>; + }; + sdrammc: sdrammc@1e6e0000 { u-boot,dm-pre-reloc; compatible = "aspeed,ast2500-sdrammc"; reg = <0x1e6e0000 0x174 0x1e6e0200 0x1d4 >; + #reset-cells = <1>; clocks = <&scu PLL_MPLL>; + resets = <&rst AST_RESET_SDRAM>; };
ahb { diff --git a/include/dt-bindings/reset/ast2500-reset.h b/include/dt-bindings/reset/ast2500-reset.h new file mode 100644 index 0000000000..eb5e1db97b --- /dev/null +++ b/include/dt-bindings/reset/ast2500-reset.h @@ -0,0 +1,45 @@ +/* + * Copyright 2017 Google, Inc + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _ABI_MACH_ASPEED_AST2500_RESET_H_ +#define _ABI_MACH_ASPEED_AST2500_RESET_H_ + +/* + * The values are intentionally layed out as flags in + * WDT reset parameter. + */ + +#define AST_RESET_SOC 0 +#define AST_RESET_CHIP 1 +#define AST_RESET_CPU (1 << 1) +#define AST_RESET_ARM (1 << 2) +#define AST_RESET_COPROC (1 << 3) +#define AST_RESET_SDRAM (1 << 4) +#define AST_RESET_AHB (1 << 5) +#define AST_RESET_I2C (1 << 6) +#define AST_RESET_MAC1 (1 << 7) +#define AST_RESET_MAC2 (1 << 8) +#define AST_RESET_GCRT (1 << 9) +#define AST_RESET_USB20 (1 << 10) +#define AST_RESET_USB11_HOST (1 << 11) +#define AST_RESET_USB11_HID (1 << 12) +#define AST_RESET_VIDEO (1 << 13) +#define AST_RESET_HAC (1 << 14) +#define AST_RESET_LPC (1 << 15) +#define AST_RESET_SDIO (1 << 16) +#define AST_RESET_MIC (1 << 17) +#define AST_RESET_CRT2D (1 << 18) +#define AST_RESET_PWM (1 << 19) +#define AST_RESET_PECI (1 << 20) +#define AST_RESET_JTAG (1 << 21) +#define AST_RESET_ADC (1 << 22) +#define AST_RESET_GPIO (1 << 23) +#define AST_RESET_MCTP (1 << 24) +#define AST_RESET_XDMA (1 << 25) +#define AST_RESET_SPI (1 << 26) +#define AST_RESET_MISC (1 << 27) + +#endif /* _ABI_MACH_ASPEED_AST2500_RESET_H_ */