From: Leo Yan <leo.yan@linaro.org>
To: Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
Kumar Gala <galak@codeaurora.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
Jassi Brar <jassisinghbrar@gmail.com>,
Leo Yan <leo.yan@linaro.org>,
Tyler Baker <tyler.baker@linaro.org>,
Arnd Bergmann <arnd@arndb.de>,
Sudeep Holla <sudeep.holla@arm.com>,
Bintian Wang <bintian.wang@huawei.com>,
Chen Feng <puck.chen@hisilicon.com>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Wei Xu <xuwei5@hisilicon.com>
Subject: [PATCH v7 RESEND 0/4] mailbox: hisilicon: add Hi6220 mailbox driver
Date: Mon, 15 Feb 2016 21:50:22 +0800 [thread overview]
Message-ID: <1455544226-10094-1-git-send-email-leo.yan@linaro.org> (raw)
Hi6220 mailbox supports up to 32 channels. Each channel is unidirectional
with a maximum message size of 8 words. I/O is performed using register
access (there is no DMA) and the cell raises an interrupt when messages
are received.
This patch series is to implement Hi6220 mailbox driver. It registers
two channels into framework for communication with MCU, one is tx channel
and another is rx channel. Now mailbox driver is used to send message to
MCU to control dynamic voltage and frequency scaling for CPU, GPU and DDR.
Changes from v6:
* Fix to use lowercase for hexadecimal value in DT binding document
Changes from v5:
* Refine to use mailbox three specifiers for client driver, so add xlate
callback function in mailbox driver to support these specifiers
* Refine document for property "hi6220,mbox-tx-noirq"
Changes from v4:
* According to Jassi's suggestion, using DT binding to register channels
* Change to use operating-points-v2 to register operating points
Changes from v3:
* The patch series for enabling idle state for Hi6220 has reserved memory
regions, so this series will not include it anymore
* Refined mailbox driver according to Jassi's suggestion;
Removed kfifo from mailbox driver;
Removed spinlock for ipc registers accessing, due every channel has its
own dedicated bit in ipc register and readl/writel will introduce memory
barrier, so don't need spinlock to protect ipc registers accessing
* After mailbox driver is ready, can use patch 4 to enable CPU's OPPs and
stub clock driver; finally can enable CPUFreq driver for CPU frequency
scaling
Changes from v2:
* Get rid of unused memory regions from memory node in DT, and don't use
reserved-memory node according to Mark and Leif's suggestion; Haojian also
has updated UEFI for efi memory info
Changes from v1:
* Correct lock usage for SMP scenario
Changes from RFC:
* According to Jassi's review, totally remove the abstract common driver
layer and only commit driver dedicated for Hi6220
* According to Paul Bolle's review, fix typo issue for Kconfig and remove
unnecessary dependency with OF and fix minor for mailbox driver
* Refine a little for dts nodes
Leo Yan (4):
dt-bindings: mailbox: Document Hi6220 mailbox driver
mailbox: Hi6220: add mailbox driver
arm64: dts: add mailbox node for Hi6220
arm64: dts: add Hi6220's stub clock node
.../bindings/mailbox/hisilicon,hi6220-mailbox.txt | 74 ++++
arch/arm64/boot/dts/hisilicon/hi6220.dtsi | 64 ++++
drivers/mailbox/Kconfig | 8 +
drivers/mailbox/Makefile | 2 +
drivers/mailbox/hi6220-mailbox.c | 395 +++++++++++++++++++++
5 files changed, 543 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mailbox/hisilicon,hi6220-mailbox.txt
create mode 100644 drivers/mailbox/hi6220-mailbox.c
--
1.9.1
next reply other threads:[~2016-02-15 13:50 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-15 13:50 Leo Yan [this message]
2016-02-15 13:50 ` [PATCH v7 RESEND 1/4] dt-bindings: mailbox: Document Hi6220 mailbox driver Leo Yan
2016-02-15 13:50 ` [PATCH v7 RESEND 2/4] mailbox: Hi6220: add " Leo Yan
2016-02-15 13:50 ` [PATCH v7 RESEND 3/4] arm64: dts: add mailbox node for Hi6220 Leo Yan
2016-02-15 13:50 ` [PATCH v7 RESEND 4/4] arm64: dts: add Hi6220's stub clock node Leo Yan
2016-02-15 13:54 ` [PATCH v7 RESEND 0/4] mailbox: hisilicon: add Hi6220 mailbox driver Leo Yan
[not found] ` <1455544226-10094-1-git-send-email-leo.yan-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2016-02-26 11:40 ` Jassi Brar
[not found] ` <CABb+yY0_OzKmftb0HQKyfuE+2jgOfoRLHp-ok=Ux36sK8na6Ag-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-02-27 7:53 ` Wei Xu
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