linux-kernel - [PATCH v2 0/2] fix rk3066a based boards hang when cpufreq changes

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Message-Id: <1452864223-423-1-git-send-email-andy.yan@rock-chips.com>
Date:	Fri, 15 Jan 2016 21:23:43 +0800
From:	Andy Yan <andy.yan@...k-chips.com>
To:	heiko@...ech.de, naobsd@...il.com
Cc:	robh+dt@...nel.org, linux@....linux.org.uk,
	devicetree@...r.kernel.org, galak@...eaurora.org,
	linux-kernel@...r.kernel.org, ijc+devicetree@...lion.org.uk,
	linux-rockchip@...ts.infradead.org, pawel.moll@....com,
	mark.rutland@....com, inux-arm-kernel@...ts.infradead.org,
	Andy Yan <andy.yan@...k-chips.com>
Subject: [PATCH v2 0/2] fix rk3066a based boards hang when cpufreq changes


I found the rayeager board always hang in the system boot
process or when cpufreq change. When check the BSP code[0]
from ChipSpark, I found the current vdd_arm voltage is too
low and so is the vdd_logic voltage, which should be modulated
by PWM3.

So I increase the vdd_arm voltage and enabled pwm3 as a pwm
regulator here.

[0] https://github.com/RockchipOpensourceCommunity/px2-android-kernel-3.0/blob/master/arch/arm/mach-rkpx2/board-rkpx2-sdk.c

Changes in v2:
- move the opp table to rk3066a.dtsi, make it as the default opp table
  for rk3066a based board.
- also enable the pwm regulator for bqcurie2 and Marsboard

Andy Yan (2):
  ARM: dts: rockchip: increase vdd_arm voltage for rk3066a based boards
  ARM: dts: rockchip: enable pwm3 as pwm regulator for rk3066a based
    boards

 arch/arm/boot/dts/rk3066a-bqcurie2.dts  | 16 ++++++++++++++++
 arch/arm/boot/dts/rk3066a-marsboard.dts | 16 ++++++++++++++++
 arch/arm/boot/dts/rk3066a-rayeager.dts  | 16 ++++++++++++++++
 arch/arm/boot/dts/rk3066a.dtsi          | 12 +++++++-----
 4 files changed, 55 insertions(+), 5 deletions(-)

-- 
1.9.1