linux-kernel - RE: [PATCH v4] ARM: configs: Add Freescale LS1021A defconfig

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Date:	Fri, 18 Sep 2015 07:38:13 +0000
From:	Huan Wang <alison.wang@...escale.com>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
CC:	"shawnguo@...nel.org" <shawnguo@...nel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Jin Jason <Jason.Jin@...escale.com>
Subject: RE: [PATCH v4] ARM: configs: Add Freescale LS1021A defconfig

> 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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