RE: [PATCH 1/7] dt-bindings: can: flexcan: fix imx8mp compatbile

From: Joakim Zhang <qiangqing.zhang@nxp.com>
To: Dong Aisheng <dongas86@gmail.com>,
	Marc Kleine-Budde <mkl@pengutronix.de>
Cc: Aisheng Dong <aisheng.dong@nxp.com>,
	devicetree <devicetree@vger.kernel.org>,
	"moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE"
	<linux-arm-kernel@lists.infradead.org>,
	dl-linux-imx <linux-imx@nxp.com>,
	Sascha Hauer <kernel@pengutronix.de>,
	Rob Herring <robh+dt@kernel.org>, Shawn Guo <shawnguo@kernel.org>,
	"linux-can@vger.kernel.org" <linux-can@vger.kernel.org>,
	"netdev@vger.kernel.org" <netdev@vger.kernel.org>
Subject: RE: [PATCH 1/7] dt-bindings: can: flexcan: fix imx8mp compatbile
Date: Thu, 15 Jul 2021 11:44:28 +0000	[thread overview]
Message-ID: <DB8PR04MB679513E50585817AF8E2C7E7E6129@DB8PR04MB6795.eurprd04.prod.outlook.com> (raw)
In-Reply-To: <CAA+hA=RBysrM5qXC=gve5n8-Rm7w_Nvsf+qurYJTkWQWPmGobw@mail.gmail.com>

> -----Original Message-----
> From: Dong Aisheng <dongas86@gmail.com>
> Sent: 2021年7月15日 19:36
> To: Marc Kleine-Budde <mkl@pengutronix.de>
> Cc: Joakim Zhang <qiangqing.zhang@nxp.com>; Aisheng Dong
> <aisheng.dong@nxp.com>; devicetree <devicetree@vger.kernel.org>;
> moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE
> <linux-arm-kernel@lists.infradead.org>; dl-linux-imx <linux-imx@nxp.com>;
> Sascha Hauer <kernel@pengutronix.de>; Rob Herring <robh+dt@kernel.org>;
> Shawn Guo <shawnguo@kernel.org>; linux-can@vger.kernel.org;
> netdev@vger.kernel.org
> Subject: Re: [PATCH 1/7] dt-bindings: can: flexcan: fix imx8mp compatbile
> 
> On Thu, Jul 15, 2021 at 7:07 PM Marc Kleine-Budde <mkl@pengutronix.de>
> wrote:
> >
> > On 15.07.2021 11:00:07, Joakim Zhang wrote:
> > > > I checked with Joakim that the flexcan on MX8MP is derived from
> > > > MX6Q with extra ECC added. Maybe we should still keep it from HW point
> of view?
> > >
> > > Sorry, Aisheng, I double check the history, and get the below results:
> > >
> > > 8MP reuses 8QXP(8QM), except ECC_EN
> > > (ipv_flexcan3_syn_006/D_IP_FlexCAN3_SYN_057 which corresponds to
> > > version d_ip_flexcan3_syn.03.00.17.01)
> >
> > Also see commit message of:
> >
> > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flore
> > .kernel.org%2Flinux-can%2F20200929211557.14153-2-qiangqing.zhang%40n
> xp
> > .com%2F&amp;data=04%7C01%7Cqiangqing.zhang%40nxp.com%7Cf5cd871
> e13b34e9
> >
> 5817b08d9478504af%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C1%7C
> 6376194
> >
> 58893680146%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIj
> oiV2luMz
> >
> IiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=YwH3vD%2FtIol5
> OXPHPM
> > VbiVCLTC7gowOdIP3Ih1lBHh0%3D&amp;reserved=0
> >
> > > I prefer to change the dtsi as Mac suggested if possible, shall I
> > > send a fix patch?
> >
> > Make it so!
> 
> Then should it be "fsl,imx8mp-flexcan", "fsl,imx8qxp-flexcan" rather than only
> drop "fsl,imx6q-flexcan"?

No, I will only use " fsl,imx8mp-flexcan" to avoid ECC impact.

Best Regards,
Joakim Zhang
> Regards
> Aisheng
> 
> >
> > regards,
> > Marc
> >
> > --
> > Pengutronix e.K.                 | Marc Kleine-Budde           |
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