linux-kernel - Re: [RFC 6/6] ARC: merge HAPS-HS with nSIM-HS configs

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Message-ID: <e5dc1e2b-94dc-6c0d-7e01-31cd952a56cf@gmail.com>
Date:   Fri, 18 Oct 2019 12:07:36 -0700
From:   Vineet Gupta <vineetg76@...il.com>
To:     Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>,
        linux-snps-arc@...ts.infradead.org
Cc:     Alexey Brodkin <Alexey.Brodkin@...opsys.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC 6/6] ARC: merge HAPS-HS with nSIM-HS configs

On 10/18/19 5:15 AM, Eugeniy Paltsev wrote:
> Starting from nSIM 2019.06 is possible to use DW UART
> instead of ARC UART. That allows us to merge
> "nsim_hs" with "haps_hs" and "nsim_hs_smp" with "haps_hs_smp"
> mith minor changes which were done in previous commits.
> 
> We eliminate nsim_hs_defconfig and nsim_hs_smp_defconfig
> and leave haps_hs_defconfig and haps_hs_smp_defconfig
> which can be used on HAPS / nSIM / ZEBU / QEMU platforms
> without additionall changes in Linux kernel.
> 
> For nSIM we should now use UART property values
> "-prop=nsim_mem-dev=uart0,kind=dwuart,base=0xf0000000"
> instead of previously used
> "-prop=nsim_mem-dev=uart0,base=0xc0fc1000"
> "use_connect" and "irq" values of UART property remains untouched.
> 
> Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>
> ---
>  arch/arc/boot/dts/nsim_hs.dts          | 67 --------------------------
>  arch/arc/boot/dts/nsim_hs_idu.dts      | 65 -------------------------
>  arch/arc/configs/nsim_hs_defconfig     | 56 ---------------------
>  arch/arc/configs/nsim_hs_smp_defconfig | 54 ---------------------
>  arch/arc/plat-sim/platform.c           |  1 -

You also need to update KBUILD_DEFCONFIG to use the haps defconfig now.

Also perhaps as an addon change switch nsim_700_defconfig to dwuart too for
consistent uart settings for all processor builds in kernel/nsim (otherwise you
need to document this disparity in various github wiki pages)

-Vineet