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Message-ID:
<OS8PR06MB7541E0944EAD547DED2AE561F2BA2@OS8PR06MB7541.apcprd06.prod.outlook.com>
Date: Fri, 9 Aug 2024 05:42:35 +0000
From: Ryan Chen <ryan_chen@...eedtech.com>
To: Christophe JAILLET <christophe.jaillet@...adoo.fr>, Lee Jones
<lee@...nel.org>, Rob Herring <robh@...nel.org>, Krzysztof Kozlowski
<krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, Joel Stanley
<joel@....id.au>, Andrew Jeffery <andrew@...econstruct.com.au>, Michael
Turquette <mturquette@...libre.com>, Stephen Boyd <sboyd@...nel.org>, Philipp
Zabel <p.zabel@...gutronix.de>, "devicetree@...r.kernel.org"
<devicetree@...r.kernel.org>, "linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>, "linux-aspeed@...ts.ozlabs.org"
<linux-aspeed@...ts.ozlabs.org>, "linux-kernel@...r.kernel.org"
<linux-kernel@...r.kernel.org>, "linux-clk@...r.kernel.org"
<linux-clk@...r.kernel.org>
Subject: RE: [PATCH 2/4] dt-bindings: reset Add AST2700 reset bindings
> 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@...eedtech.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@...61000 {
.....
resets = <&syscon0 SCU0_RESET_PORTA_EHCI>;
};
vhuba0: usb-vhub@...60000 {
.......
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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