linux-kernel - [PATCH v5 4/6] Documentation: DT: PL011: hi6220: add compatible string for Hisilicon designed UART

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Message-ID: <1431007225-8513-5-git-send-email-bintian.wang@huawei.com>
Date:	Thu, 7 May 2015 22:00:23 +0800
From:	Bintian Wang <bintian.wang@...wei.com>
To:	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <catalin.marinas@....com>,
	<will.deacon@....com>, <devicetree@...r.kernel.org>,
	<robh+dt@...nel.org>, <pawel.moll@....com>, <mark.rutland@....com>,
	<ijc+devicetree@...lion.org.uk>, <galak@...eaurora.org>,
	<khilman@...aro.org>, <mturquette@...aro.org>,
	<rob.herring@...aro.org>, <zhangfei.gao@...aro.org>,
	<haojian.zhuang@...aro.org>, <xuwei5@...ilicon.com>,
	<jh80.chung@...sung.com>, <olof@...om.net>, <yanhaifeng@...il.com>,
	<sboyd@...eaurora.org>, <xuejiancheng@...wei.com>,
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	<linux@....linux.org.uk>, <guodong.xu@...aro.org>,
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	<khilman@...nel.org>, <pebolle@...cali.nl>, <arnd@...db.de>,
	<marc.zyngier@....com>
CC:	<xuyiping@...ilicon.com>, <wangbinghui@...ilicon.com>,
	<zhenwei.wang@...ilicon.com>, <victor.lixin@...ilicon.com>,
	<puck.chen@...ilicon.com>, <dan.zhao@...ilicon.com>,
	<huxinwei@...wei.com>, <bintian.wang@...wei.com>,
	<z.liuxinliang@...wei.com>, <heyunlei@...wei.com>,
	<kong.kongxinwei@...ilicon.com>, <btw@...l.itp.ac.cn>,
	<w.f@...wei.com>, <liguozhu@...ilicon.com>
Subject: [PATCH v5 4/6] Documentation: DT: PL011: hi6220: add compatible string for Hisilicon designed UART

Hisilicon does some performance enhancements based on PL011(e.g. larger
FIFO length), so add one compatible string "hisilicon,hi6220-uart" for
future optimisations or workarounds works.

Signed-off-by: Bintian Wang <bintian.wang@...wei.com>
Suggested-by: Mark Rutland <mark.rutland@....com>
---
 Documentation/devicetree/bindings/serial/pl011.txt |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/serial/pl011.txt b/Documentation/devicetree/bindings/serial/pl011.txt
index ba3ecb8..cb9fd9d 100644
--- a/Documentation/devicetree/bindings/serial/pl011.txt
+++ b/Documentation/devicetree/bindings/serial/pl011.txt
@@ -1,7 +1,9 @@
 * ARM AMBA Primecell PL011 serial UART
 
 Required properties:
-- compatible: must be "arm,primecell", "arm,pl011"
+- compatible: should contain one of the following sequences:
+  * "arm,pl011", "arm,primecell"
+  * "hisilicon,hi6220-pl011", "arm,pl011", "arm,primecell"
 - reg: exactly one register range with length 0x1000
 - interrupts: exactly one interrupt specifier
 
-- 
1.7.9.5

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