Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1755056AbaK0MEy (ORCPT <rfc822;w@1wt.eu>);
	Thu, 27 Nov 2014 07:04:54 -0500
Received: from cam-admin0.cambridge.arm.com ([217.140.96.50]:41417 "EHLO
	cam-admin0.cambridge.arm.com" rhost-flags-OK-OK-OK-OK)
	by vger.kernel.org with ESMTP id S1753427AbaK0MEv (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Thu, 27 Nov 2014 07:04:51 -0500
Date: Thu, 27 Nov 2014 12:03:56 +0000
From: Mark Rutland <mark.rutland@arm.com>
To: Chunyan Zhang <chunyan.zhang@spreadtrum.com>
Cc: "grant.likely@linaro.org" <grant.likely@linaro.org>,
        "robh+dt@kernel.org" <robh+dt@kernel.org>,
        Catalin Marinas <Catalin.Marinas@arm.com>,
        "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
        "ijc+devicetree@hellion.org.uk" <ijc+devicetree@hellion.org.uk>,
        "jslaby@suse.cz" <jslaby@suse.cz>,
        "galak@codeaurora.org" <galak@codeaurora.org>,
        "broonie@linaro.org" <broonie@linaro.org>,
        "m-karicheri2@ti.com" <m-karicheri2@ti.com>,
        Pawel Moll <Pawel.Moll@arm.com>,
        "artagnon@gmail.com" <artagnon@gmail.com>,
        "rrichter@cavium.com" <rrichter@cavium.com>,
        Will Deacon <Will.Deacon@arm.com>, "arnd@arndb.de" <arnd@arndb.de>,
        "gnomes@lxorguk.ukuu.org.uk" <gnomes@lxorguk.ukuu.org.uk>,
        "corbet@lwn.net" <corbet@lwn.net>,
        "jason@lakedaemon.net" <jason@lakedaemon.net>,
        "broonie@kernel.org" <broonie@kernel.org>,
        "heiko@sntech.de" <heiko@sntech.de>,
        "shawn.guo@freescale.com" <shawn.guo@freescale.com>,
        "florian.vaussard@epfl.ch" <florian.vaussard@epfl.ch>,
        "andrew@lunn.ch" <andrew@lunn.ch>,
        "hytszk@gmail.com" <hytszk@gmail.com>,
        "orsonzhai@gmail.com" <orsonzhai@gmail.com>,
        "geng.ren@spreadtrum.com" <geng.ren@spreadtrum.com>,
        "zhizhou.zhang@spreadtrum.com" <zhizhou.zhang@spreadtrum.com>,
        "lanqing.liu@spreadtrum.com" <lanqing.liu@spreadtrum.com>,
        "zhang.lyra@gmail.com" <zhang.lyra@gmail.com>,
        "wei.qiao@spreadtrum.com" <wei.qiao@spreadtrum.com>,
        "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
        "linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "sprdlinux@freelists.org" <sprdlinux@freelists.org>,
        "linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>,
        "linux-serial@vger.kernel.org" <linux-serial@vger.kernel.org>,
        "linux-api@vger.kernel.org" <linux-api@vger.kernel.org>
Subject: Re: [PATCH v3 0/5] Add Spreadtrum Sharkl64 Platform support
Message-ID: <20141127120356.GF857@leverpostej>
References: <Sharkl64-v3>
 <1416917818-10506-1-git-send-email-chunyan.zhang@spreadtrum.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <1416917818-10506-1-git-send-email-chunyan.zhang@spreadtrum.com>
User-Agent: Mutt/1.5.21 (2010-09-15)
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

Hi,

On Tue, Nov 25, 2014 at 12:16:53PM +0000, Chunyan Zhang wrote:
> Spreadtrum is a rapid growing chip vendor providing smart phone total solutions.
> 
> Sharkl64 Platform is nominated as a SoC infrastructure that supports 4G/3G/2G
> standards based on ARMv8 multiple core architecture.Now we have only one
> SoC(SC9836) based on this Platform in developing.
> 
> This patchset adds Sharkl64 support in arm64 device tree and the serial driver
> of SC9836-UART.
> 
> This patchset also has patches which address "sprd" prefix and DT compatible
> strings for nodes which appear un-documented.
> 
> This version code was tesed on Fast Mode.

This concerns me a bit because fast models are extremely lenient w.r.t.
the management of clocks and regulators. Are you sure you have
everything you need for your UART described?

> We use boot-wrapper-aarch64 as the bootloader.

Which version of boot-wrapper-aarch64 are you using?

Upstream does not implement PSCI 0.2, but its --enable-psci option will
inject PSCI 0.1 compatible properties, which leads me to suspect that
your DT is misleading. The boot wrapper should also program CNTFRQ_EL0
correctly regardless.

What do you intend to use on real hardware?

Thanks,
Mark.

> 
> Changes from v2:
> * Addressed review comments:
> 	- Added a specific compitible string 'sc9836-uart' for the serial
> 	- Added a full serial driver
> 	- Added the property 'clock-frequency' for timer node in dtsi.
> 	- Replaceed the old macro prefix 'UART_' with 'SPRD_' in the 
> 	  Spreadtrum serial driver code.
> * Revised the name of SoC and board from 'sharkl3' to 'sc9836'
> * Used dual-license for DTS files
> * Added a menuconfig 'ARCH_SPRD' in arch/arm64/Kconfig
> 
> Changes from v1:
> * Addressed review comments:
>         - Added "sprd" prefix to vendor-prefixes.txt
>         - Created serial/sprd-serial.txt and remove the properties for serial-sprd
>           from of-serial.txt to it.
>         - Renamed of-serial.txt to 8250.txt according to Arnd's review comments
>         - Splited and revised .dts for Sharkl64 Platform
>         - Changed to PSCI method for cpu power management
>         - Revised Kconfig Makefile to match the alphabetical ordering
>         - Renamed serial-sprd-earlycon.c to serial-sprd.c
> 
> Chunyan Zhang (3):
>   Documentation: DT: Renamed of-serial.txt to 8250.txt
>   Documentation: DT: Add bindings for Spreadtrum SoC Platform
>   tty/serial: Add Spreadtrum sc9836-uart driver support
> 
> Zhizhou Zhang (2):
>   arm64: dts: Add support for Spreadtrum SC9836 SoC in dts and Makefile
>   arm64: Add support for Spreadtrum's Sharkl64 Platform in Kconfig and
>     defconfig
> 
>  Documentation/devices.txt                          |    3 +
>  Documentation/devicetree/bindings/arm/sprd.txt     |   11 +
>  .../bindings/serial/{of-serial.txt => 8250.txt}    |    0
>  .../devicetree/bindings/serial/sprd-uart.txt       |    6 +
>  .../devicetree/bindings/vendor-prefixes.txt        |    1 +
>  arch/arm64/Kconfig                                 |   17 +
>  arch/arm64/boot/dts/Makefile                       |    1 +
>  arch/arm64/boot/dts/sprd-sc9836-openphone.dts      |   85 +++
>  arch/arm64/boot/dts/sprd-sc9836.dtsi               |  103 +++
>  arch/arm64/boot/dts/sprd-sharkl64.dtsi             |  105 +++
>  arch/arm64/configs/defconfig                       |    2 +
>  drivers/tty/serial/Kconfig                         |   23 +
>  drivers/tty/serial/Makefile                        |    1 +
>  drivers/tty/serial/sprd_serial.c                   |  752 ++++++++++++++++++++
>  include/uapi/linux/serial_core.h                   |    3 +
>  15 files changed, 1113 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/arm/sprd.txt
>  rename Documentation/devicetree/bindings/serial/{of-serial.txt => 8250.txt} (100%)
>  create mode 100644 Documentation/devicetree/bindings/serial/sprd-uart.txt
>  create mode 100644 arch/arm64/boot/dts/sprd-sc9836-openphone.dts
>  create mode 100644 arch/arm64/boot/dts/sprd-sc9836.dtsi
>  create mode 100644 arch/arm64/boot/dts/sprd-sharkl64.dtsi
>  create mode 100644 drivers/tty/serial/sprd_serial.c
> 
> -- 
> 1.7.9.5
> 
> 
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/