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Re: [PATCH v4] ARM: configs: Add Freescale LS1021A defconfig

Started byRussell King - ARM Linux <linux@arm.linux.org.uk>
First post2015-09-17 12:40 +0200
Last post2015-09-18 17:50 +0200
Articles 3 — 3 participants

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  Re: [PATCH v4] ARM: configs: Add Freescale LS1021A defconfig Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-09-17 12:40 +0200
    RE: [PATCH v4] ARM: configs: Add Freescale LS1021A defconfig Huan Wang <alison.wang@freescale.com> - 2015-09-18 09:40 +0200
      Re: [PATCH v4] ARM: configs: Add Freescale LS1021A defconfig Fabio Estevam <festevam@gmail.com> - 2015-09-18 17:50 +0200

#1226896 — Re: [PATCH v4] ARM: configs: Add Freescale LS1021A defconfig

FromRussell King - ARM Linux <linux@arm.linux.org.uk>
Date2015-09-17 12:40 +0200
SubjectRe: [PATCH v4] ARM: configs: Add Freescale LS1021A defconfig
Message-ID<q9ELE-TQ-19@gated-at.bofh.it>
On Thu, Sep 17, 2015 at 05:03:34PM +0800, Alison Wang wrote:
> Add Freescale LS1021A initial defconfig file.
> The LS1021A SoC is a dual-core Cortex-A7 based processor.
> 
> LS1021A has some special configurations against imx_v6_v7_defconfig and
> multi_v7_defconfig, such as CONFIG_ARM_LPAE, CONFIG_ARM_PSCI...
> LPAE needs to be supported to access memory beyond the 4GB limit for
> LS1021A. PSCI needs to be supported for LS1021A too. But CONFIG_ARM_LPAE
> and CONFIG_ARM_PSCI are disabled in imx_v6_v7_defconfig and
> multi_v7_defconfig, so a separate LS1021A defconfig is needed.

Sounds like a need for multi_v7_lpae_defconfig rather than creating
a new load of platform specific defconfigs.

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#1227617

FromHuan Wang <alison.wang@freescale.com>
Date2015-09-18 09:40 +0200
Message-ID<q9YqZ-4pF-5@gated-at.bofh.it>
In reply to#1226896
> On Thu, Sep 17, 2015 at 05:03:34PM +0800, Alison Wang wrote:
> > Add Freescale LS1021A initial defconfig file.
> > The LS1021A SoC is a dual-core Cortex-A7 based processor.
> >
> > LS1021A has some special configurations against imx_v6_v7_defconfig
> > and multi_v7_defconfig, such as CONFIG_ARM_LPAE, CONFIG_ARM_PSCI...
> > LPAE needs to be supported to access memory beyond the 4GB limit for
> > LS1021A. PSCI needs to be supported for LS1021A too. But
> > CONFIG_ARM_LPAE and CONFIG_ARM_PSCI are disabled in
> > imx_v6_v7_defconfig and multi_v7_defconfig, so a separate LS1021A
> defconfig is needed.
> 
> Sounds like a need for multi_v7_lpae_defconfig rather than creating a
> new load of platform specific defconfigs.
> 
[Alison Wang] Thanks for your reply. I agreed with you about creating
a new multi_v7_lpae_defconfig. In multi_v7_lpae_defconfig, I need to add
the following CONFIG_XX to support LS1021A based on multi_v7_defconfig.

CONFIG_ARM_LPAE=y
CONFIG_VMSPLIT_2G=y
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_SIZE=256000
CONFIG_GIANFAR=y
CONFIG_REALTEK_PHY=y
CONFIG_I2C_IMX=y
CONFIG_SPI_FSL_DSPI=y
CONFIG_IMX2_WDT=y
CONFIG_REGULATOR_DEBUG=y
CONFIG_REGULATOR_VIRTUAL_CONSUMER=y
CONFIG_SOUND=y
CONFIG_SND=y
CONFIG_SND_SOC=y
CONFIG_SND_SOC_FSL_SAI=y
CONFIG_SND_SOC_SGTL5000=y
CONFIG_SND_SIMPLE_CARD=y
CONFIG_FSL_EDMA=y
CONFIG_CLK_QORIQ=y

What's your suggestion? If it's ok, I will send a patch about multi_v7_lpae_defconfig.


Best Regards,
Alison Wang
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#1228089

FromFabio Estevam <festevam@gmail.com>
Date2015-09-18 17:50 +0200
Message-ID<qa65c-6Ux-25@gated-at.bofh.it>
In reply to#1227617
On Fri, Sep 18, 2015 at 4:38 AM, Huan Wang <alison.wang@freescale.com> wrote:

> [Alison Wang] Thanks for your reply. I agreed with you about creating
> a new multi_v7_lpae_defconfig. In multi_v7_lpae_defconfig, I need to add
> the following CONFIG_XX to support LS1021A based on multi_v7_defconfig.
>
> CONFIG_ARM_LPAE=y
> CONFIG_VMSPLIT_2G=y

Is CONFIG_VMSPLIT_2G=y really needed?
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