linux-kernel - RE: [PATCH 1/2] arch: arm64: boot: dts: Updated QSPI Flash layout for UBIFS

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Date:   Fri, 23 Jun 2023 10:07:29 +0000
From:   "Lee, Kah Jing" <kah.jing.lee@...el.com>
To:     Conor Dooley <conor@...nel.org>
CC:     Dinh Nguyen <dinguyen@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "Yuslaimi, Alif Zakuan" <alif.zakuan.yuslaimi@...el.com>
Subject: RE: [PATCH 1/2] arch: arm64: boot: dts: Updated QSPI Flash layout for
 UBIFS

> -----Original Message-----
> From: Conor Dooley <conor@...nel.org>
> Sent: Friday, 23 June, 2023 3:19 AM
> To: Lee, Kah Jing <kah.jing.lee@...el.com>
> Cc: Dinh Nguyen <dinguyen@...nel.org>; Rob Herring
> <robh+dt@...nel.org>; Krzysztof Kozlowski
> <krzysztof.kozlowski+dt@...aro.org>; Conor Dooley <conor+dt@...nel.org>;
> Catalin Marinas <catalin.marinas@....com>; Will Deacon <will@...nel.org>;
> linux-kernel@...r.kernel.org; devicetree@...r.kernel.org; Yuslaimi, Alif
> Zakuan <alif.zakuan.yuslaimi@...el.com>
> Subject: Re: [PATCH 1/2] arch: arm64: boot: dts: Updated QSPI Flash layout
> for UBIFS
> 
> On Thu, Jun 22, 2023 at 04:53:19PM +0800, kah.jing.lee@...el.com wrote:
> > From: Alif Zakuan Yuslaimi <alif.zakuan.yuslaimi@...el.com>
> >
> > This patch is to update the QSPI flash layout to support UBIFS in mtd
> > root partition.
> 
> That much is clear from the diff. Surely it'd be better to explain *why* this
> change is being made, no?
Updated in v3 - Commit message:
Update the QSPI flash layout to support UBIFS in mtd root partition.
Flash layout is updated in order to store non-UBIFS related boot and fpga data in
qspi_boot(mtd0) while keep the rootfs with UBIFS in the root partition(mtd1).
> 
> Thanks,
> Conor.
> 
> >
> > Signed-off-by: Alif Zakuan Yuslaimi <alif.zakuan.yuslaimi@...el.com>
> > Signed-off-by: Kah Jing Lee <kah.jing.lee@...el.com>
> > ---
> >  arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts | 8 ++++----
> >  arch/arm64/boot/dts/intel/socfpga_agilex_socdk.dts     | 8 ++++----
> >  2 files changed, 8 insertions(+), 8 deletions(-)
> >
> > diff --git a/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts
> > b/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts
> > index 38ae674f2f02..12b960b9183c 100644
> > --- a/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts
> > +++ b/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts
> > @@ -202,12 +202,12 @@ partitions {
> >
> >  			qspi_boot: partition@0 {
> >  				label = "Boot and fpga data";
> > -				reg = <0x0 0x03FE0000>;
> > +				reg = <0x0 0x04200000>;
> >  			};
> >
> > -			qspi_rootfs: partition@...0000 {
> > -				label = "Root Filesystem - JFFS2";
> > -				reg = <0x03FE0000 0x0C020000>;
> > +			root: partition@...0000 {
> > +				label = "Root Filesystem - UBIFS";
> > +				reg = <0x04200000 0x0BE00000>;
> >  			};
> >  		};
> >  	};
> > diff --git a/arch/arm64/boot/dts/intel/socfpga_agilex_socdk.dts
> > b/arch/arm64/boot/dts/intel/socfpga_agilex_socdk.dts
> > index 07c3f8876613..608017e6e36a 100644
> > --- a/arch/arm64/boot/dts/intel/socfpga_agilex_socdk.dts
> > +++ b/arch/arm64/boot/dts/intel/socfpga_agilex_socdk.dts
> > @@ -128,12 +128,12 @@ partitions {
> >
> >  			qspi_boot: partition@0 {
> >  				label = "Boot and fpga data";
> > -				reg = <0x0 0x03FE0000>;
> > +				reg = <0x0 0x04200000>;
> >  			};
> >
> > -			qspi_rootfs: partition@...0000 {
> > -				label = "Root Filesystem - JFFS2";
> > -				reg = <0x03FE0000 0x0C020000>;
> > +			root: partition@...0000 {
> > +				label = "Root Filesystem - UBIFS";
> > +				reg = <0x04200000 0x0BE00000>;
> >  			};
> >  		};
> >  	};
> > --
> > 2.25.1
> >

Thanks. 

Regards, 
Lee, Kah Jing