linux-kernel - [RFC PATCH 0/3] clk: stm32: Add clock driver for STM32F4[23]xxx devices

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Date:	Fri, 22 May 2015 21:41:10 +0100
From:	Daniel Thompson <daniel.thompson@...aro.org>
To:	Mike Turquette <mturquette@...aro.org>,
	Stephen Boyd <sboyd@...eaurora.org>
Cc:	Daniel Thompson <daniel.thompson@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	Kamil Lulko <rev13@...pl>, Andreas Farber <afaerber@...e.de>,
	linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	patches@...aro.org, linaro-kernel@...ts.linaro.org
Subject: [RFC PATCH 0/3] clk: stm32: Add clock driver for STM32F4[23]xxx devices

This patchset implements a clock driver for STM32F42xxx and STM32F43xxx
series devices.

There are a few small caveats at the present:

 1. Relies on "Add support to STMicroeletronics STM32 family", v8 by
    Maxime Coquelin:
    http://thread.gmane.org/gmane.linux.kernel.cross-arch/27569

 2. Allocating ~80 clock components appears to fragment memory enough
    to prevent busybox (.text is ~300K, non-XIP) from running getty.
    I have to use "init=/bin/sh" to avoid OOM problems.

 3. Support for I2S and SAI is not included in this patchset.

Daniel Thompson (3):
  dt-bindings: Document the STM32F4 clock bindings
  clk: stm32: Add clock driver for STM32F4[23]xxx devices
  ARM: dts: stm32f429: Adopt STM32F4 clock driver

 .../devicetree/bindings/clock/st,stm32-rcc.txt     |  65 ++++
 arch/arm/boot/dts/stm32f429.dtsi                   |  83 ++---
 drivers/clk/Makefile                               |   1 +
 drivers/clk/clk-stm32f4.c                          | 365 +++++++++++++++++++++
 4 files changed, 457 insertions(+), 57 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/clock/st,stm32-rcc.txt
 create mode 100644 drivers/clk/clk-stm32f4.c

--
2.1.0

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