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From: Arnd Bergmann <arnd@arndb.de>
To: Guo Ren <ren_guo@c-sky.com>
Cc: linux-arch <linux-arch@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Daniel Lezcano <daniel.lezcano@linaro.org>,
	Jason Cooper <jason@lakedaemon.net>,
	c-sky_gcc_upstream@c-sky.com, gnu-csky@mentor.com,
	thomas.petazzoni@bootlin.com, wbx@uclibc-ng.org
Subject: Re: [PATCH 17/19] csky: defconfig
Date: Tue, 27 Mar 2018 09:48:23 +0200	[thread overview]
Message-ID: <CAK8P3a2CD4nEDzMZxtn1QQJA3oQeX=-4v17AxhpTuUqk8boVhg@mail.gmail.com> (raw)
In-Reply-To: <20180327022128.GB10185@guoren>

On Tue, Mar 27, 2018 at 4:21 AM, Guo Ren <ren_guo@c-sky.com> wrote:
> On Mon, Mar 26, 2018 at 03:16:31PM +0200, Arnd Bergmann wrote:

>> > +CONFIG_CFG80211=y
>> > +CONFIG_CFG80211_DEBUGFS=y
>> > +CONFIG_CFG80211_WEXT=y
>>
>> I would guess you want IPV6 but not WEXT here.
> Gx6605s devlepment board support usb-wifi.
> Perhaps WEXT is needed by iwconfig or iwlist? So I just enable it.
> However, I'll consider to remove it.

I think it's only for backwards compatibility with old versions of
those tools. There are some older drivers that use WEXT as the
native interface, but CFG80211 based drivers have a netlink
interface.

>> > +CONFIG_FB=y
>> > +CONFIG_FB_TILEBLITTING=y
>> > +CONFIG_FB_SIMPLE=y
>> > +CONFIG_BACKLIGHT_LCD_SUPPORT=y
>> > +# CONFIG_LCD_CLASS_DEVICE is not set
>> > +# CONFIG_BACKLIGHT_CLASS_DEVICE is not set
>> > +# CONFIG_VGA_CONSOLE is not set
>> > +CONFIG_FRAMEBUFFER_CONSOLE=y
>> > +CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
>> > +CONFIG_FRAMEBUFFER_CONSOLE_ROTATION=y
>> > +CONFIG_LOGO=y
>> > +# CONFIG_LOGO_LINUX_MONO is not set
>> > +# CONFIG_LOGO_LINUX_VGA16 is not set
>>
>> For new platforms, using the DRM subsystem is the recommend
>> way to do graphics, it mostly replaces the framebuffer subsystem
>> here.
> These used by:
> https://github.com/c-sky/addons-linux/tree/master/addons/drivers/video/fbdev/nationalchip
>
> I'll consider the DRM subsystem.

It used to be rather hard to write a new DRM driver, but that has
improved a lot recently. You might be able to fit your driver into
drivers/gpu/drm/tinydrm/, or maybe do something a bit more complex
like drivers/gpu/drm/pl111/ or drivers/gpu/drm/stm/.

       Arnd

  reply	other threads:[~2018-03-27  7:48 UTC|newest]

Thread overview: 63+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-18 19:51 [PATCH 00/19] C-SKY(csky) Linux Kernel Port Guo Ren
2018-03-18 19:51 ` [PATCH 01/19] csky: Kernel booting Guo Ren
2018-03-18 19:51 ` [PATCH 02/19] csky: Exception handling and syscall Guo Ren
2018-03-19  1:48   ` Mark Rutland
2018-03-19  6:47     ` Guo Ren
2018-03-19  8:50   ` Dominik Brodowski
2018-03-19 11:03     ` Guo Ren
2018-03-18 19:51 ` [PATCH 03/19] csky: Cache and TLB routines Guo Ren
2018-03-18 19:51 ` [PATCH 04/19] csky: MMU and page talbe management Guo Ren
2018-03-18 19:51 ` [PATCH 05/19] csky: Process management Guo Ren
2018-03-18 19:51 ` [PATCH 06/19] csky: IRQ handling Guo Ren
2018-03-19 13:16   ` Thomas Gleixner
2018-03-20  2:06     ` Guo Ren
2018-03-18 19:51 ` [PATCH 07/19] csky: Atomic operations Guo Ren
2018-03-18 19:51 ` [PATCH 08/19] csky: ELF and module probe Guo Ren
2018-03-18 19:51 ` [PATCH 09/19] csky: VDSO and rt_sigreturn Guo Ren
2018-03-18 19:51 ` [PATCH 10/19] csky: Signal handling Guo Ren
2018-03-26 13:04   ` Arnd Bergmann
2018-03-27  2:41     ` Guo Ren
2018-03-18 19:51 ` [PATCH 11/19] csky: Library functions Guo Ren
2018-03-18 19:51 ` [PATCH 12/19] csky: Debug and Ptrace GDB Guo Ren
2018-03-26 13:06   ` Arnd Bergmann
2018-03-18 19:51 ` [PATCH 13/19] csky: User access Guo Ren
2018-03-18 19:51 ` [PATCH 14/19] csky: Misc headers Guo Ren
2018-03-19 16:11   ` Arnd Bergmann
2018-03-20  3:36     ` Guo Ren
2018-03-20  7:54       ` Arnd Bergmann
2018-03-20 13:22         ` Guo Ren
2018-03-18 19:51 ` [PATCH 15/19] csky: Build infrastructure Guo Ren
2018-03-19 15:45   ` Arnd Bergmann
2018-03-20 13:13     ` Guo Ren
2018-03-21  7:36       ` Arnd Bergmann
2018-03-21 12:41         ` Guo Ren
2018-03-26 13:00           ` Arnd Bergmann
2018-03-27  2:39             ` Guo Ren
2018-03-27  7:38               ` Arnd Bergmann
2018-03-28  3:49                 ` Guo Ren
2018-03-28  7:40                   ` Arnd Bergmann
2018-03-28  8:04                     ` Guo Ren
2018-03-18 19:51 ` [PATCH 16/19] csky: Device tree Guo Ren
2018-03-19 15:28   ` Arnd Bergmann
2018-03-20 13:55     ` Guo Ren
2018-03-18 19:51 ` [PATCH 17/19] csky: defconfig Guo Ren
2018-03-26 13:16   ` Arnd Bergmann
2018-03-27  2:21     ` Guo Ren
2018-03-27  7:48       ` Arnd Bergmann [this message]
2018-03-28  3:59         ` Guo Ren
2018-03-18 19:51 ` [PATCH 18/19] clocksource: add timer-nationalchip.c Guo Ren
2018-03-18 22:07   ` Daniel Lezcano
2018-03-19  6:59     ` Guo Ren
2018-03-19  4:15   ` Mark Rutland
2018-03-19  7:03     ` Guo Ren
2018-03-18 19:51 ` [PATCH 19/19] irqchip: add irq-nationalchip.c and irq-csky.c Guo Ren
2018-03-19  4:26   ` Mark Rutland
2018-03-19  7:08     ` Guo Ren
2018-03-19 13:30   ` Thomas Gleixner
2018-03-20 14:23     ` Guo Ren
2018-03-18 20:25 ` [PATCH 00/19] C-SKY(csky) Linux Kernel Port Joe Perches
2018-03-19  7:11   ` Guo Ren
2018-03-26 13:30 ` Arnd Bergmann
2018-03-26 15:06   ` [gnu-csky] " Sandra Loosemore
2018-03-26 15:11     ` Arnd Bergmann
2018-03-27  1:58   ` Guo Ren

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