netdev - RE: [PATCH 2/2] net: stmmac: Add StarFive JH8100 dwmac support

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Message-ID:
 <BJSPR01MB05950484841C3D104EC91DEC9E6AA@BJSPR01MB0595.CHNPR01.prod.partner.outlook.cn>
Date: Tue, 9 Jan 2024 07:25:44 +0000
From: ChunHau Tan <chunhau.tan@...rfivetech.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>, "David S . Miller"
	<davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski
	<kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Rob Herring
	<robh+dt@...nel.org>, Emil Renner Berthing <kernel@...il.dk>, Rob Herring
	<robh@...nel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>, Maxime Coquelin
	<mcoquelin.stm32@...il.com>, Alexandre Torgue <alexandre.torgue@...s.st.com>,
	Simon Horman <horms@...nel.org>, Bartosz Golaszewski
	<bartosz.golaszewski@...aro.org>, Andrew Halaney <ahalaney@...hat.com>,
	Jisheng Zhang <jszhang@...nel.org>, Uwe Kleine-König
	<u.kleine-koenig@...gutronix.de>, Russell King <rmk+kernel@...linux.org.uk>
CC: Leyfoon Tan <leyfoon.tan@...rfivetech.com>, JeeHeng Sia
	<jeeheng.sia@...rfivetech.com>, "netdev@...r.kernel.org"
	<netdev@...r.kernel.org>, "devicetree@...r.kernel.org"
	<devicetree@...r.kernel.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "linux-stm32@...md-mailman.stormreply.com"
	<linux-stm32@...md-mailman.stormreply.com>,
	"linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>
Subject: RE: [PATCH 2/2] net: stmmac: Add StarFive JH8100 dwmac support



> -----Original Message-----
> From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> Sent: Monday, 8 January, 2024 5:07 PM
> To: ChunHau Tan <chunhau.tan@...rfivetech.com>; David S . Miller
> <davem@...emloft.net>; Eric Dumazet <edumazet@...gle.com>; Jakub
> Kicinski <kuba@...nel.org>; Paolo Abeni <pabeni@...hat.com>; Rob Herring
> <robh+dt@...nel.org>; Emil Renner Berthing <kernel@...il.dk>; Rob Herring
> <robh@...nel.org>; Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>;
> Conor Dooley <conor+dt@...nel.org>; Maxime Coquelin
> <mcoquelin.stm32@...il.com>; Alexandre Torgue
> <alexandre.torgue@...s.st.com>; Simon Horman <horms@...nel.org>;
> Bartosz Golaszewski <bartosz.golaszewski@...aro.org>; Andrew Halaney
> <ahalaney@...hat.com>; Jisheng Zhang <jszhang@...nel.org>; Uwe
> Kleine-König <u.kleine-koenig@...gutronix.de>; Russell King
> <rmk+kernel@...linux.org.uk>
> Cc: Leyfoon Tan <leyfoon.tan@...rfivetech.com>; JeeHeng Sia
> <jeeheng.sia@...rfivetech.com>; netdev@...r.kernel.org;
> devicetree@...r.kernel.org; linux-kernel@...r.kernel.org;
> linux-stm32@...md-mailman.stormreply.com;
> linux-arm-kernel@...ts.infradead.org
> Subject: Re: [PATCH 2/2] net: stmmac: Add StarFive JH8100 dwmac support
> 
> On 08/01/2024 08:58, Tan Chun Hau wrote:
> > Add JH8100 dwmac support.
> >
> > Signed-off-by: Tan Chun Hau <chunhau.tan@...rfivetech.com>
> > ---
> >  drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c | 1 +
> >  1 file changed, 1 insertion(+)
> >
> > diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
> b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
> > index 5d630affb4d1..373714f6e382 100644
> > --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
> > +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
> > @@ -146,6 +146,7 @@ static int starfive_dwmac_probe(struct
> platform_device *pdev)
> >
> >  static const struct of_device_id starfive_dwmac_match[] = {
> >  	{ .compatible = "starfive,jh7110-dwmac"	},
> > +	{ .compatible = "starfive,jh8100-dwmac"	},
> 
> No differences? Then why aren't the devices made compatible with each
> other?
There is a difference between JH7110 & JH8110,
JH7110 has two reset signals (ahb, stmmaceth),
while JH8110 has only one reset signal (stmmaceth),
this will be shown in device tree file.
> 
> Best regards,
> Krzysztof