RE: [PATCH 2/4] dt-bindings: reset Add AST2700 reset bindings

[Ryan Chen <ryan_chen@aspeedtech.com>]

> Subject: Re: [PATCH 2/4] dt-bindings: reset Add AST2700 reset bindings
>
> Le 08/08/2024 à 09:59, Ryan Chen a écrit :
> > Add dt bindings for AST2700 reset driver.
> >
> > Signed-off-by: Ryan Chen <ryan_chen@aspeedtech.com>
> > ---
> >   .../dt-bindings/reset/aspeed,ast2700-reset.h  | 132
> ++++++++++++++++++
> >   1 file changed, 132 insertions(+)
> >   create mode 100644 include/dt-bindings/reset/aspeed,ast2700-reset.h
> >
> > diff --git a/include/dt-bindings/reset/aspeed,ast2700-reset.h
> > b/include/dt-bindings/reset/aspeed,ast2700-reset.h
> > new file mode 100644
> > index 000000000000..ea261108abfb
> > --- /dev/null
> > +++ b/include/dt-bindings/reset/aspeed,ast2700-reset.h
> > @@ -0,0 +1,132 @@
> > +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
> > +/*
> > + * Device Tree binding constants for AST2700 reset controller.
> > + *
> > + * Copyright (c) 2024 Aspeed Technology Inc.
> > + */
> > +
> > +#ifndef _MACH_ASPEED_AST2700_RESET_H_ #define
> > +_MACH_ASPEED_AST2700_RESET_H_
> > +
> > +/* SOC0 */
> > +#define SCU0_RESET_SDRAM           (0)
> > +#define SCU0_RESET_DDRPHY          (1)
> > +#define SCU0_RESET_RSA                     (2)
> > +#define SCU0_RESET_SHA3                    (3)
> > +#define SCU0_RESET_HACE                    (4)
> > +#define SCU0_RESET_SOC                     (5)
> > +#define SCU0_RESET_VIDEO           (6)
> > +#define SCU0_RESET_2D                      (7)
> > +#define SCU0_RESET_PCIS                    (8)
> > +#define SCU0_RESET_RVAS0           (9)
> > +#define SCU0_RESET_RVAS1           (10)
> > +#define SCU0_RESET_SM3                     (11)
> > +#define SCU0_RESET_SM4                     (12)
> > +#define SCU0_RESET_CRT0                    (13)
> > +#define SCU0_RESET_ECC                     (14)
> > +#define SCU0_RESET_DP_PCI          (15)
> > +#define SCU0_RESET_UFS                     (16)
> > +#define SCU0_RESET_EMMC                    (17)
> > +#define SCU0_RESET_PCIE1RST                (18)
> > +#define SCU0_RESET_PCIE1RSTOE              (19)
> > +#define SCU0_RESET_PCIE0RST                (20)
> > +#define SCU0_RESET_PCIE0RSTOE              (21)
> > +#define SCU0_RESET_JTAG                    (22)
> > +#define SCU0_RESET_MCTP0           (23)
> > +#define SCU0_RESET_MCTP1           (24)
> > +#define SCU0_RESET_XDMA0           (25)
> > +#define SCU0_RESET_XDMA1           (26)
> > +#define SCU0_RESET_H2X1                    (27)
> > +#define SCU0_RESET_DP                      (28)
> > +#define SCU0_RESET_DP_MCU          (29)
> > +#define SCU0_RESET_SSP                     (30)
> > +#define SCU0_RESET_H2X0                    (31)
> > +#define SCU0_RESET_PORTA_VHUB1             (32)
> > +#define SCU0_RESET_PORTA_PHY3              (33)
> > +#define SCU0_RESET_PORTA_XHCI              (34)
> > +#define SCU0_RESET_PORTB_VHUB1             (35)
> > +#define SCU0_RESET_PORTB_PHY3              (36)
> > +#define SCU0_RESET_PORTB_XHCI              (37)
> > +#define SCU0_RESET_PORTA_EHCI              (38)
> > +#define SCU0_RESET_PORTA_VHUB0             (38)
>
> Is having 38 twice expected?
> If not, why not use an enum, BTW?
>
Yes, it is expected. Due to 38 is shared reset for 2 usb controller.
One for EHCI, another is for vhub0. So I do define the same value.
That I can do more clear in dtsi description.
The following will be expected dtsi file descript.

ehci0: usb@12061000 {
        .....
        resets = <&syscon0 SCU0_RESET_PORTA_EHCI>;
};

vhuba0: usb-vhub@12060000 {
        .......
        resets = <&syscon0 SCU0_RESET_PORTA_VHUB0>;
};
> > +#define SCU0_RESET_PORTB_EHCI              (39)
> > +#define SCU0_RESET_PORTB_VHUB0             (39)
> > +#define SCU0_RESET_UHCI                    (40)
> > +#define SCU0_RESET_TSP                     (41)
> > +#define SCU0_RESET_E2M0                    (42)
> > +#define SCU0_RESET_E2M1                    (43)
> > +#define SCU0_RESET_VLINK           (44)
> > +
> > +#define SCU0_RESET_NUMS            (SCU0_RESET_VLINK + 1)
> > +
> > +/* SOC1 */
> > +#define SCU1_RESET_LPC0                    (0)
> > +#define SCU1_RESET_LPC1                    (1)
> > +#define SCU1_RESET_MII                     (2)
> > +#define SCU1_RESET_PECI                    (3)
> > +#define SCU1_RESET_PWM                     (4)
> > +#define SCU1_RESET_MAC0                    (5)
> > +#define SCU1_RESET_MAC1                    (6)
> > +#define SCU1_RESET_MAC2                    (7)
> > +#define SCU1_RESET_ADC                     (8)
> > +#define SCU1_RESET_SD                      (9)
> > +#define SCU1_RESET_ESPI0           (10)
> > +#define SCU1_RESET_ESPI1           (11)
> > +#define SCU1_RESET_JTAG1           (12)
> > +#define SCU1_RESET_SPI0                    (13)
> > +#define SCU1_RESET_SPI1                    (14)
> > +#define SCU1_RESET_SPI2                    (15)
> > +#define SCU1_RESET_I3C0                    (16)
> > +#define SCU1_RESET_I3C1                    (17)
> > +#define SCU1_RESET_I3C2                    (18)
> > +#define SCU1_RESET_I3C3                    (19)
> > +#define SCU1_RESET_I3C4                    (20)
> > +#define SCU1_RESET_I3C5                    (21)
> > +#define SCU1_RESET_I3C6                    (22)
> > +#define SCU1_RESET_I3C7                    (23)
> > +#define SCU1_RESET_I3C8                    (24)
> > +#define SCU1_RESET_I3C9                    (25)
> > +#define SCU1_RESET_I3C10           (26)
> > +#define SCU1_RESET_I3C11           (27)
> > +#define SCU1_RESET_I3C12           (28)
> > +#define SCU1_RESET_I3C13           (29)
> > +#define SCU1_RESET_I3C14           (30)
> > +#define SCU1_RESET_I3C15           (31)
> > +#define SCU1_RESET_I3C15           (31)
>
> SCU1_RESET_I3C15 is defined twice.
>
> > +#define SCU1_RESET_MCU0                    (32)
> > +#define SCU1_RESET_MCU1                    (33)
> > +#define SCU1_RESET_H2A_SPI1                (34)
> > +#define SCU1_RESET_H2A_SPI2                (35)
> > +#define SCU1_RESET_UART0           (36)
> > +#define SCU1_RESET_UART1           (37)
> > +#define SCU1_RESET_UART2           (38)
> > +#define SCU1_RESET_UART3           (39)
> > +#define SCU1_RESET_I2C_FILTER              (40)
> > +#define SCU1_RESET_CALIPTRA                (41)
> > +#define SCU1_RESET_XDMA                    (42)
> > +/* reserved 43 */
> > +#define SCU1_RESET_FSI                     (44)
> > +#define SCU1_RESET_CAN                     (45)
> > +#define SCU1_RESET_MCTP                    (46)
> > +#define SCU1_RESET_I2C                     (47)
> > +#define SCU1_RESET_UART6           (48)
> > +#define SCU1_RESET_UART7           (49)
> > +#define SCU1_RESET_UART8           (50)
> > +#define SCU1_RESET_UART9           (51)
> > +#define SCU1_RESET_LTPI                    (52)
> > +#define SCU1_RESET_VGAL                    (53)
> > +#define SCU1_RESET_LTPI1           (54)
> > +#define SCU1_RESET_ACE                     (55)
> > +#define SCU1_RESET_E2M                     (56)
> > +#define SCU1_RESET_UHCI                    (57)
> > +#define SCU1_RESET_PORTC_EHCI              (58)
> > +#define SCU1_RESET_PORTC_VHUB              (59)
> > +#define SCU1_RESET_PORTD_EHCI              (60)
> > +#define SCU1_RESET_PORTD_VHUB              (61)
> > +#define SCU1_RESET_H2X                     (62)
> > +#define SCU1_RESET_I3CDMA          (63)
> > +#define SCU1_RESET_PCIE2RST                (64)
> > +
> > +#define SCU1_RESET_NUMS            (SCU1_RESET_PCIE2RST + 1)
> > +
> > +#endif  /* _MACH_ASPEED_AST2700_RESET_H_ */

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