Markus Niebel [Tue, 4 Jun 2013 11:07:12 +0000 (13:07 +0200)]
ARM i.MX53: mba53: add missing gpio stuff for pca9554
Add properties to make use of pca9554 gpio expander.
Signed-off-by: Markus Niebel <Markus.Niebel@tqs.de>
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Markus Niebel [Tue, 4 Jun 2013 11:07:11 +0000 (13:07 +0200)]
ARM i.MX53: mba53: add sound support
Enable the sgtl5000 found on MBa53 mainboard.
Also enable audio muxer and ssi, which are needed for sound to work.
Signed-off-by: Markus Niebel <Markus.Niebel@tqs.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Philipp Zabel [Tue, 4 Jun 2013 11:07:10 +0000 (13:07 +0200)]
ARM i.MX53: mba53: add Tevision Encoder
Enable tve on MBa53.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Sascha Hauer [Tue, 4 Jun 2013 11:07:09 +0000 (13:07 +0200)]
ARM i.MX53: mba53: Add display support
As the displays are optional and we have more than one, also
set the status of the parallel display and the ldb to disabled.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Michael Olbrich [Tue, 4 Jun 2013 11:07:08 +0000 (13:07 +0200)]
ARM i.MX53: mba53: enable usbotg & usbh1
Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
Signed-off-by: Markus Niebel <Markus.Niebel@tqs.de>
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Steffen Trumtrar [Thu, 6 Jun 2013 09:49:36 +0000 (11:49 +0200)]
ARM i.MX53: tqma53: add WP/CD pinctrl and vmmc to esdhc2
Add WP/CD pinctrl for esdhc2.
Also, add vmmc-supply for esdhc2.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Philipp Zabel [Tue, 4 Jun 2013 10:12:22 +0000 (12:12 +0200)]
ARM i.MX53: Add TVE entry to i.MX53 dtsi
This adds the Television Encoder (TVEv2) device tree node
to the i.MX53 dtsi.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Philipp Zabel [Tue, 4 Jun 2013 09:12:29 +0000 (11:12 +0200)]
ARM i.MX53: tqma53: rev 300 specific pin configuration
I2S_MCLK is moved from pad GPIO19 to GPIO0, which can be muxed to the
ssi_ext1 clock signal. #SYSTEM_DOWN is moved from pad GPIO0 to GPIO19.
Add #PHY_RESET and LCD_CONTRAST.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Philipp Zabel [Tue, 4 Jun 2013 09:12:28 +0000 (11:12 +0200)]
ARM i.MX53: tqma53: fix pinctrl settings
BIT(31) is NO_PAD_CTL, not BIT(16)
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Sascha Hauer [Tue, 4 Jun 2013 09:12:27 +0000 (11:12 +0200)]
ARM i.MX53: tqma53: Fix interrupt polarity for the mc34708
It's active high, not active low.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Alexander Shiyan [Sat, 1 Jun 2013 05:54:13 +0000 (09:54 +0400)]
ARM: dts: imx27-phytec-phycore-som: Add initial support for PCM970 RDK
Patch adds initial dts for Phytec PCM970 Rapid development kit.
- Added definition for UART0 and UART1.
- Added additional SPI chipselect which used on RDK for ZegBee module.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Alexander Shiyan [Sat, 1 Jun 2013 05:54:12 +0000 (09:54 +0400)]
ARM: dts: imx27-phytec-phycore-som: Remove UART definitions
UART1 and UART2 can be unused on some designs with PCM038 module.
Remove these definitions from basic dts and lets choose user only
necessary UARTs in custom designs.
Keep UART0 for using this one as boot console, but since we have
not way to disable usage RTSCTS signals, remove this parameter for UART0.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Alexander Shiyan [Sat, 1 Jun 2013 05:54:11 +0000 (09:54 +0400)]
ARM: dts: imx27-phytec-phycore: Rename file to match functionality
PCM038 dts can be used as base for development kit board or any
custom PCB designs. Renames this file to match functionality.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Alexander Shiyan [Sat, 1 Jun 2013 05:54:10 +0000 (09:54 +0400)]
ARM: dts: imx27-phytec-phycore: Add reset GPIO for FEC
FEC (KSZ8001L) reset pin is connected to GPIOC30.
Add this definition to dts.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Jingchang Lu [Tue, 28 May 2013 09:12:23 +0000 (17:12 +0800)]
ARM: dts: add initial VF610 Tower board dts support
Add initial Freescale Vybrid VF610 Tower board support
with uart and fec enabled.
Signed-off-by: Jingchang Lu <b35083@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Jingchang Lu [Tue, 28 May 2013 09:12:22 +0000 (17:12 +0800)]
ARM: dts: add SoC level device tree source for VF610
Add SoC level device tree source for Freescale Vybrid VF610.
Signed-off-by: Jingchang Lu <b35083@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Jonas Andersson [Mon, 27 May 2013 08:52:54 +0000 (10:52 +0200)]
ARM: dts: imx53: add fec pinctrl
Add a group to the fec pinctrl, for use with MII interface.
Signed-off-by: Jonas Andersson <jonas@microbit.se>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Jonas Andersson [Mon, 27 May 2013 08:52:45 +0000 (10:52 +0200)]
ARM: dts: imx53: add ecspi2 pinctrl
Add ecspi2 pinctrl.
Signed-off-by: Jonas Andersson <jonas@microbit.se>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Jonas Andersson [Mon, 27 May 2013 08:52:21 +0000 (10:52 +0200)]
ARM: dts: imx53: add cspi pinctrl
Add a group to the cspi pinctrl.
Signed-off-by: Jonas Andersson <jonas@microbit.se>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Rogerio Pimentel [Fri, 24 May 2013 14:09:30 +0000 (11:09 -0300)]
ARM: dts: mx53qsb: Add support for parallel display
Add support for CLAA WVGA display for i.MX53 QSB.
Signed-off-by: Rogerio Pimentel <rogerio.pimentel@freescale.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Gwenhael Goavec-Merou [Thu, 16 May 2013 10:25:31 +0000 (12:25 +0200)]
ARM: imx: apf51: add nfc support
Signed-off-by: Gwenhael Goavec-Merou <gwenhael.goavec-merou@armadeus.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Dirk Behme [Thu, 16 May 2013 06:51:34 +0000 (08:51 +0200)]
i.MX6: Documentation: update from fsl,card-wired to non-removable
With the commit
7f217794f (mmc: dt: Consolidate DT bindings),
the device tree properties used by various device drivers
for SD/MMC host controllers were standardized. One of the changes
was that the property "fsl,card-wired", previously used by the
Freescale driver, was replaced with "non-removable". Fix the example
documentation regarding this.
Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Shawn Guo [Sun, 28 Apr 2013 02:01:18 +0000 (10:01 +0800)]
ARM: dts: imx6qdl: remove redundant ocotp node
There is a redundant ocotp node. Remove it.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Shawn Guo [Sun, 28 Apr 2013 01:59:54 +0000 (09:59 +0800)]
ARM: dts: imx6qdl: remove redundant usbmisc label
There is a redundant label on usbmisc node. Remove it.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Shawn Guo [Fri, 3 May 2013 03:28:42 +0000 (11:28 +0800)]
ARM: dts: imx6sl: add initial imx6sl-evk support
Add initial imx6sl-evk board support with uart, usdhc and fec enabled.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Shawn Guo [Fri, 3 May 2013 03:26:30 +0000 (11:26 +0800)]
ARM: dts: add device tree source for imx6sl SoC
Add SoC level device tree source for imx6sl.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Dirk Behme [Fri, 26 Apr 2013 08:13:55 +0000 (10:13 +0200)]
ARM: dts: i.MX6: configure L2 cache data and tag latency
Configure the data and tag latency for the L2 cache. This improves the
system performance.
This configuration is taken from Freescale's kernel patch
"ENGR00153601 [MX6]Adjust L2 cache parameter" [1]
which does
writel(0x132, IO_ADDRESS(L2_BASE_ADDR + L2X0_TAG_LATENCY_CTRL));
writel(0x132, IO_ADDRESS(L2_BASE_ADDR + L2X0_DATA_LATENCY_CTRL));
In this patch we are doing the same via the device tree.
Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
[1] http://git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git/commit/arch/arm/mach-mx6/mm.c?h=imx_3.0.35_12.09.01&id=
814656410b40c67a10b25300e51b0477b2bb96d1
Huang Shijie [Thu, 9 May 2013 03:29:03 +0000 (11:29 +0800)]
ARM: dts: add SPI/NOR for mx6q{dl}-sabreauto boards
Since the SPI/NOR has pin conflict with the WEIM NOR,
we disable the spi/nor by default.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Huang Shijie [Thu, 9 May 2013 03:29:02 +0000 (11:29 +0800)]
ARM: dts: imx6q: add a gpio for hog
The SPI/NOR needs this gpio for CS.
So add this gpio in the hog pinctrl.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Huang Shijie [Thu, 9 May 2013 03:29:01 +0000 (11:29 +0800)]
ARM: dts: imx6dl: add a gpio for hog
The SPI/NOR needs this gpio for CS.
So add this gpio in the hog pinctrl.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Huang Shijie [Thu, 9 May 2013 03:29:00 +0000 (11:29 +0800)]
ARM: dts: imx6dl: add a pinctrl for eCSPI1
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Huang Shijie [Tue, 7 May 2013 07:39:20 +0000 (15:39 +0800)]
ARM: dts: enable the gpmi-nand for imx6q{dl}-sabreauto boards
enable the gpmi-nand for imx6q-sabreauto and imx6qdl-sabreauto boards.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Huang Shijie [Tue, 7 May 2013 07:39:19 +0000 (15:39 +0800)]
ARM: dts: imx6dl: add pinctrl for gpmi-nand
add the pinctrl item for gpmi-nand.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Huang Shijie [Tue, 7 May 2013 07:39:18 +0000 (15:39 +0800)]
ARM: dts: imx6q: remove the unused pins for gpmi-nand
The gpmi does not use the MX6Q_PAD_NANDF_CS2__NAND_CE2_B and
MX6Q_PAD_NANDF_CS3__NAND_CE3_B.
Just remove them.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Alexander Shiyan [Fri, 3 May 2013 08:08:21 +0000 (12:08 +0400)]
ARM: dts: Add SPI support for i.MX27 Phytec PCM038 module
Added SPI node and PMIC MC13783 (spi0.0) to imx27-phytec-phycore DT file.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Alexander Shiyan [Wed, 1 May 2013 10:46:57 +0000 (14:46 +0400)]
ARM: dts: Add aliases for i.MX27 SPI controller
Add aliases to determine the proper SPI bus number.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Steffen Trumtrar [Wed, 24 Apr 2013 09:41:26 +0000 (11:41 +0200)]
ARM: dts: add Ka-Ro tx53 devicetree
This adds support for the Ka-Ro TX53 System-On-Module.
As a baseboard is needed to operate it, only a *.dtsi and no Makefile entry.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Steffen Trumtrar [Wed, 24 Apr 2013 09:41:25 +0000 (11:41 +0200)]
ARM: i.MX53: add uart2 pinctrl
Add a group to the uart2 pinctrl.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Steffen Trumtrar [Wed, 24 Apr 2013 09:41:24 +0000 (11:41 +0200)]
ARM: i.MX53: add uart1 pinctrl
Add a group to the uart1 pinctrl.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Steffen Trumtrar [Wed, 24 Apr 2013 09:41:23 +0000 (11:41 +0200)]
ARM: i.MX53: add pwm2 pinctrl
Add pinctrl for pwm2.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Steffen Trumtrar [Wed, 24 Apr 2013 09:41:22 +0000 (11:41 +0200)]
ARM: i.MX53: add ecspi pinctrl
Add a group to the ecspi pinctrl.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Steffen Trumtrar [Wed, 24 Apr 2013 09:41:21 +0000 (11:41 +0200)]
ARM: i.MX53: add csi pinctrl
Add a group to the csi pinctrl.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Steffen Trumtrar [Wed, 24 Apr 2013 09:41:20 +0000 (11:41 +0200)]
ARM: i.MX53: add audmux pinctrl
Add a group to the audmux pinctrl.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Marek Vasut [Mon, 22 Apr 2013 21:23:47 +0000 (23:23 +0200)]
ARM: mx5: Add support for DENX M53EVK
This patch adds support for the DENX M53EVK board. The board currently supports
NAND, Ethernet, UART, CAN, I2C.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Shawn Guo [Mon, 22 Apr 2013 04:48:42 +0000 (12:48 +0800)]
ARM: imx: move imx53-qsb audio codec clk lookup into DT
With device tree clk lookup support in place, we can move audio codec
clk lookup for ssi_ext1 into device tree now, so that imx53_qsb_init()
can be saved.
Since ssi_ext2 lookup is used nowhere, it gets removed together with
ssi_ext1 lookup from clk driver.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Marek Vasut [Sun, 21 Apr 2013 21:30:07 +0000 (23:30 +0200)]
ARM: mx5: Add PWM1 pinctrl data
This patch adds pinctrl data for PWM1 on MX53.
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Marek Vasut [Sun, 21 Apr 2013 21:30:06 +0000 (23:30 +0200)]
ARM: mx5: Add LCD IPU pinctrl data
This patch adds pinmux for IPU LCD 1 and IPU LVDS.
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Marek Vasut [Sun, 21 Apr 2013 21:30:05 +0000 (23:30 +0200)]
ARM: mx5: Add NAND pinctrl data
This patch adds pinctrl data for NAND on MX53.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Marek Vasut [Sun, 21 Apr 2013 21:30:04 +0000 (23:30 +0200)]
ARM: mx5: Add I2C2 pinctrl data
This patch adds pinctrl data for different mux of I2C2 on MX53.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Marek Vasut [Sun, 21 Apr 2013 21:30:03 +0000 (23:30 +0200)]
ARM: mx5: Add I2C1 pinctrl data
This patch adds pinctrl data for different mux of I2C1 on MX53.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Marek Vasut [Sun, 21 Apr 2013 21:30:02 +0000 (23:30 +0200)]
ARM: mx5: Add CAN1 pinctrl data
This patch adds pinctrl data for different mux of CAN1 on MX53.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Marek Vasut [Sun, 21 Apr 2013 21:30:01 +0000 (23:30 +0200)]
ARM: mx5: Add AUDMUX4 pinctrl data
This patch adds pinctrl data for the AUDMUX4 on MX53.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Philipp Zabel [Tue, 9 Apr 2013 17:18:47 +0000 (19:18 +0200)]
ARM i.MX53: dts: add i2c aliases
This allows to order the i2c character devices correctly,
so that /dev/i2c-0 corresponds to i2c1, /dev/i2c-1 corresponds
to i2c2, and so on. Currently they are ordered by register
address.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Gwenhael Goavec-Merou [Sun, 14 Apr 2013 07:44:25 +0000 (09:44 +0200)]
ARM: imx27: Add PWM0 to device tree
Signed-off-by: Gwenhael Goavec-Merou <gwenhael.goavec-merou@armadeus.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Michael Grzeschik [Thu, 11 Apr 2013 10:13:17 +0000 (12:13 +0200)]
ARM: dts: imx: imx53-qsb.dts: enable usbotg and usbh1
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Michael Grzeschik [Thu, 11 Apr 2013 10:13:16 +0000 (12:13 +0200)]
ARM: dts: imx: use usb-nop-xceiv usbphy entries for imx5x
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Michael Grzeschik [Thu, 11 Apr 2013 10:13:15 +0000 (12:13 +0200)]
ARM: dts: imx: add imx5x usb clock DT lookups
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Michael Grzeschik [Thu, 11 Apr 2013 10:13:14 +0000 (12:13 +0200)]
ARM: dts: imx: add imx5x usbmisc entries
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Shawn Guo [Mon, 17 Jun 2013 08:02:51 +0000 (16:02 +0800)]
Merge tag 'imx-soc-3.11' into imx/dt
imx soc changes for 3.11:
* New SoCs i.MX6 Sololite and Vybrid VF610 support
* imx5 and imx6 clock fixes and additions
* Update clock driver to use of_clk_init() function
* Refactor restart routine mxc_restart() to get it work for DT boot
as well
* Clean up mxc specific ulpi access ops
* imx defconfig updates
Fabio Estevam [Sat, 15 Jun 2013 22:14:33 +0000 (19:14 -0300)]
ARM: imx_v6_v7_defconfig: Enable Vybrid VF610
Let VF610 SoC support be built by default.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Nicolin Chen [Thu, 13 Jun 2013 11:51:04 +0000 (19:51 +0800)]
ARM: imx_v6_v7_defconfig: Enable imx-wm8962 by default
Enable imx-wm8962 and PM_RUNTIME, essential for WM8962 CODEC driver.
Signed-off-by: Nicolin Chen <b42378@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Nicolin Chen [Thu, 13 Jun 2013 11:50:56 +0000 (19:50 +0800)]
ARM: clk-imx6qdl: Add clko1 configuration for imx6qdl-sabresd
WM8962 needs 24MHz clock for its MCLK, so choose PLL4 as the parent of clko1.
Signed-off-by: Nicolin Chen <b42378@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Fabio Estevam [Thu, 6 Jun 2013 15:56:30 +0000 (12:56 -0300)]
ARM: imx_v6_v7_defconfig: Enable PWM and backlight options
These options are useful for controlling backlight contrast via PWM.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Markus Pargmann [Thu, 6 Jun 2013 12:41:57 +0000 (14:41 +0200)]
ARM: imx: Remove mxc specific ulpi access ops
There are ulpi access ops implemented in drivers/usb/phy/phy-ulpi.c.
mxc access ops implement the same access operations within mach-imx. This
patch removes the mxc ulpi file and uses phy-ulpi instead for
imx_otg_ulpi_create.
phy-ulpi successfully tested with i.MX27 Phytec phyCARD-S (pca100).
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Jingchang Lu [Tue, 28 May 2013 09:12:21 +0000 (17:12 +0800)]
ARM: imx: add initial support for VF610
Add initial support for Freescale Vybrid VF610 SoC.
Signed-off-by: Jingchang Lu <b35083@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Jingchang Lu [Tue, 28 May 2013 09:12:20 +0000 (17:12 +0800)]
ARM: imx: add VF610 clock support
Add clock support for Vybrid VF610. It uses dtc macro support to
define all clock IDs in vf610-clock.h to keep clock IDs coherence
between kernel and DT.
Signed-off-by: Jingchang Lu <b35083@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Rogerio Pimentel [Fri, 24 May 2013 14:09:31 +0000 (11:09 -0300)]
ARM: imx_v6_v7_defconfig: enable parallel display
Enable paralell display by default
Signed-off-by: Rogerio Pimentel <rogerio.pimentel@freescale.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Fabio Estevam [Fri, 24 May 2013 19:55:42 +0000 (16:55 -0300)]
ARM: imx: clk: No need to initialize phandle struct
commit
84344b43c (ARM: i.MX5: Allow DT clock providers) introduce the following
sparse warning:
arch/arm/mach-imx/clk.c:12:43: warning: Using plain integer as NULL pointer
There is no need to initialize phandle, so remove it.
Cc: Martin Fuzzey <mfuzzey@parkeon.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Fabio Estevam [Fri, 24 May 2013 19:55:41 +0000 (16:55 -0300)]
ARM: imx: irq-common: Include header to avoid sparse warning
Fix the following sparse warning:
arch/arm/mach-imx/irq-common.c:24:5: warning: symbol 'mxc_set_irq_fiq' was not declared. Should it be static?
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Fabio Estevam [Thu, 23 May 2013 23:41:48 +0000 (20:41 -0300)]
ARM: imx: Enable mx6 solo-lite support
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Shawn Guo [Tue, 21 May 2013 01:58:51 +0000 (09:58 +0800)]
ARM: imx6: use common of_clk_init() call to initialize clocks
Instead of explicitly calling clock initialization functions, we can
declare the functions with CLK_OF_DECLARE() and then call common
of_clk_init() to have them invoked properly.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Shawn Guo [Mon, 20 May 2013 14:39:19 +0000 (22:39 +0800)]
ARM: imx6q: call of_clk_init() to register fixed rate clocks
As the fixed rate clocks are defined in device tree, we can just call
of_clk_init() to register them.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Fabio Estevam [Mon, 20 May 2013 13:59:57 +0000 (10:59 -0300)]
ARM: imx: imx_v6_v7_defconfig: Select CONFIG_DRM_IMX_TVE
Let the mx53 TVE driver be built by default.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Dirk Behme [Sat, 18 May 2013 07:25:28 +0000 (09:25 +0200)]
ARM: i.MX6: clk: add different DualLite MLB clock config
The CCM_CBCMR register (address 0x02C4018) has different meaning
between the i.MX6 Quad/Dual and the i.MX6 Solo/DualLite.
Compared to the i.MX6 Quad/Dual, the CCM_CBCMR register in the
i.MX6 Solo/DualLite reuses the gpu2d_core bits for the MLB clock
configuration.
Signed-off-by: Dirk Behme <dirk.behme@gmail.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Philipp Zabel [Fri, 17 May 2013 13:49:03 +0000 (15:49 +0200)]
ARM i.MX5: Add S/PDIF clocks
This patch adds the S/PDIF clocks for i.MX51 and i.MX53. Tested on i.MX53.
The i.MX51 has a second set of spdif_root clock dividers, and on i.MX53
there is an additional input to the spdif_xtal mux.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Sascha Hauer [Fri, 17 May 2013 13:49:02 +0000 (15:49 +0200)]
ARM i.MX53: Add SATA clock
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Huang Shijie [Fri, 17 May 2013 09:15:23 +0000 (17:15 +0800)]
ARM: imx6q: clk: add the eim_slow clock
Add the eim_slow clock, since the weim needs it.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Jiada Wang [Fri, 17 May 2013 08:40:45 +0000 (17:40 +0900)]
ARM: imx: remove MLB PLL from pllv3
MLB PLL should be handled internally in MLB driver,
so remove it from pllv3.
Signed-off-by: Jiada Wang <jiada_wang@mentor.com>
CC: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Jiada Wang [Fri, 17 May 2013 08:40:44 +0000 (17:40 +0900)]
ARM: imx: disable pll8_mlb in mx6q_clks
The MLB PLL clock's operation doesn't fit for clock framework and
it should be handled internally in MLB driver.
Remove initialization of pll8_mlb clock device but leave its
declaration in mx6q_clks to avoid affecting imx6q clock numbering.
Signed-off-by: Jiada Wang <jiada_wang@mentor.com>
CC: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Shawn Guo [Fri, 3 May 2013 03:24:47 +0000 (11:24 +0800)]
ARM: imx: add initial support for imx6sl
Add initial support for i.MX6 SoloLite.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Shawn Guo [Fri, 3 May 2013 03:21:03 +0000 (11:21 +0800)]
ARM: imx: enable low-level debug support for imx6sl
Enable low-level debug support for i.MX6 SoloLite by adding the debug
port definitions for the SoC.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Shawn Guo [Fri, 3 May 2013 03:06:46 +0000 (11:06 +0800)]
ARM: imx: add clock support for imx6sl
Add clock support for i.MX6 SoloLite. It uses the dtc marco support to
define all clock IDs in imx6sl-clock.h, which will be included by both
clock driver and device tree sources, so that the data will stay sync
all the time between kernel and DT.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Shawn Guo [Fri, 10 May 2013 02:19:01 +0000 (10:19 +0800)]
ARM: imx: create mxc_arch_reset_init_dt() for DT boot
The mxc_arch_reset_init() uses static mapping and calls clk_get_sys() to
get clock. It's suitable for non-DT boot but not for DT boot where
dynamic mapping and of_clk_get() should be used instead. Create
mxc_arch_reset_init_dt() as the DT variant of mxc_arch_reset_init(),
and change DT platforms to use it.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Shawn Guo [Fri, 10 May 2013 01:13:44 +0000 (09:13 +0800)]
ARM: imx: move clk_prepare() out from mxc_restart()
It's inappropriate to call clk_prepare() in mxc_restart(), because the
restart routine could be called in atomic context. Move clk_get() and
clk_prepare() into mxc_arch_reset_init() and only have the atomic part
clk_enable() be called in mxc_restart().
As a result, mxc_arch_reset_init() needs to be called after clk gets
initialized.
While there, it also changes printk(KERN_ERR ...) to pr_err() and adds
__init annotation for mxc_arch_reset_init().
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Shawn Guo [Fri, 10 May 2013 01:08:07 +0000 (09:08 +0800)]
ARM: imx: include <asm/io.h> in hardware.h
As IOMEM is referenced in hardware.h, <asm/io.h> should be included
there.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Dirk Behme [Fri, 3 May 2013 09:08:45 +0000 (11:08 +0200)]
ARM: i.MX6: clk: add i.MX6 DualLite differences
The CCM_CBCMR register (address 0x02C4018) has different meaning
between the i.MX6 Quad/Dual and the i.MX6 Solo/DualLite.
Compared to the i.MX6 Quad/Dual, the CCM_CBCMR register in the
i.MX6 Solo/DualLite doesn't have a gpu3d_shader configuration and
moves the gpu2_core configuration at that place.
Handle these i.MX6 Quad/Dual vs. i.MX6 Solo/DualLite clock differences
by using cpu_is_mx6dl().
Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Dirk Behme [Fri, 26 Apr 2013 08:13:56 +0000 (10:13 +0200)]
ARM: i.MX6: add i.MX6 specific L2 cache configuration
To improve the performance and power consumption add an i.MX6
specific L2 cache initialization.
This configuration is taken from Freescale's kernel patch
"ENGR00153601 [MX6]Adjust L2 cache parameter" [1]
with two additional improvements:
a) The L2X0_POWER_CTRL has only the two bits we set. So no need
to read the register before. Remove the register read done
in Freescale's patch.
b) In the L2X0_PREFETCH_CTRL register, besides the double linefill (bit[30]),
additionally enable the instruction and data prefetch (bit[29-28]).
Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
[1] http://git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git/commit/arch/arm/mach-mx6/mm.c?h=imx_3.0.35_12.09.01&id=
814656410b40c67a10b25300e51b0477b2bb96d1
Martin Fuzzey [Tue, 23 Apr 2013 12:16:59 +0000 (20:16 +0800)]
ARM: i.MX5: Allow DT clock providers
Currently clock providers defined in the DT are not registered
on i.MX5 platforms since of_clk_init() is not called.
This is not a problem for the SOC's own clocks, which are registered
in code, but prevents the DT being used to define clocks for external
hardware.
Fix this by calling of_clk_init() and actually using the DT to obtain
the 4 SOC fixed clocks.
These are already defined in the DT but were previously just used to
manually obtain the rate.
Fall back to the old scheme for non DT platforms.
Since the same method may be useful for other i.MX platforms
implement the imx_obtain_fixed_clock() function in common code.
Actually changing other i.MX platforms to use this should be done
later by someone with access to the appropriate hardware.
Signed-off-by: Martin Fuzzey <mfuzzey@parkeon.com>
Tested-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Linus Torvalds [Sat, 15 Jun 2013 21:51:07 +0000 (11:51 -1000)]
Linux 3.10-rc6
Linus Torvalds [Sat, 15 Jun 2013 21:49:48 +0000 (11:49 -1000)]
Merge tag 'fixes-for-linus' of git://git./linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"These are a little later than I planned on since I got caught up with
handling merges for 3.11 most of the week.
Another week, another batch of fixes for arm-soc platforms.
Again, nothing controversial. A few more than would be ideal, but all
are valid fixes. In particular the prima2 panic patch is critical
since it fixes a problem where multiplatform kernels panic on all but
prima2 hardware."
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: SAMSUNG: pm: Adjust for pinctrl- and DT-enabled platforms
ARM: prima2: fix incorrect panic usage
arm: mvebu: armada-xp-{gp,openblocks-ax3-4}: specify PCIe range
ARM: Kirkwood: handle mv88f6282 cpu in __kirkwood_variant().
ARM: omap3: clock: fix wrong container_of in clock36xx.c
ARM: dts: OMAP5: Fix missing PWM capability to timer nodes
ARM: dts: omap4-panda|sdp: Fix mux for twl6030 IRQ pin and msecure line
ARM: dts: AM33xx: Fix properties on gpmc node
arm: omap2: fix AM33xx hwmod infos for UART2
ARM: OMAP3: Fix iva2_pwrdm settings for 3703
Linus Torvalds [Sat, 15 Jun 2013 21:47:56 +0000 (11:47 -1000)]
Merge git://git./linux/kernel/git/davem/net
Pull networking fixes from David Miller:
1) Fix RTNL locking in batman-adv, from Matthias Schiffer.
2) Don't allow non-passthrough macvlan devices to set NOPROMISC via
netlink, otherwise we can end up with corrupted promisc counter
values on the device. From Michael S Tsirkin.
3) Fix stmmac driver build with debugging defines enabled, from Dinh
Nguyen.
4) Make sure name string we give in socket address in AF_PACKET is NULL
terminated, from Daniel Borkmann.
5) Fix leaking of two uninitialized bytes of memory to userspace in
l2tp, from Guillaume Nault.
6) Clear IPCB(skb) before tunneling otherwise we touch dangling IP
options state and crash. From Saurabh Mohan.
7) Fix suspend/resume for davinci_mdio by using suspend_late and
resume_early. From Mugunthan V N.
8) Don't tag ip_tunnel_init_net and ip_tunnel_delete_net with
__net_{init,exit}, they can be called outside of those contexts.
From Eric Dumazet.
9) Fix RX length error in sh_eth driver, from Yoshihiro Shimoda.
10) Fix missing sctp_outq initialization in some code paths of SCTP
stack, from Neil Horman.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (21 commits)
sctp: fully initialize sctp_outq in sctp_outq_init
netiucv: Hold rtnl between name allocation and device registration.
tulip: Properly check dma mapping result
net: sh_eth: fix incorrect RX length error if R8A7740
ip_tunnel: remove __net_init/exit from exported functions
drivers: net: davinci_mdio: restore mdio clk divider in mdio resume
drivers: net: davinci_mdio: moving mdio resume earlier than cpsw ethernet driver
net/ipv4: ip_vti clear skb cb before tunneling.
tg3: Wait for boot code to finish after power on
l2tp: Fix sendmsg() return value
l2tp: Fix PPP header erasure and memory leak
bonding: fix igmp_retrans type and two related races
bonding: reset master mac on first enslave failure
packet: packet_getname_spkt: make sure string is always 0-terminated
net: ethernet: stmicro: stmmac: Fix compile error when STMMAC_XMIT_DEBUG used
be2net: Fix 32-bit DMA Mask handling
xen-netback: don't de-reference vif pointer after having called xenvif_put()
macvlan: don't touch promisc without passthrough
batman-adv: Don't handle address updates when bla is disabled
batman-adv: forward late OGMs from best next hop
...
Linus Torvalds [Sat, 15 Jun 2013 05:25:04 +0000 (19:25 -1000)]
Merge branch 'merge' of git://git./linux/kernel/git/benh/powerpc
Pull powerpc fixes from Benjamin Herrenschmidt:
"So here are 3 fixes still for 3.10. Fixes are simple, bugs are nasty
(though not recent regressions, nasty enough) and all targeted at
stable"
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc: Fix missing/delayed calls to irq_work
powerpc: Fix emulation of illegal instructions on PowerNV platform
powerpc: Fix stack overflow crash in resume_kernel when ftracing
David Daney [Fri, 14 Jun 2013 18:13:59 +0000 (11:13 -0700)]
smp.h: Use local_irq_{save,restore}() in !SMP version of on_each_cpu().
Thanks to commit
f91eb62f71b3 ("init: scream bloody murder if interrupts
are enabled too early"), "bloody murder" is now being screamed.
With a MIPS OCTEON config, we use on_each_cpu() in our
irq_chip.irq_bus_sync_unlock() function. This gets called in early as a
result of the time_init() call. Because the !SMP version of
on_each_cpu() unconditionally enables irqs, we get:
WARNING: at init/main.c:560 start_kernel+0x250/0x410()
Interrupts were enabled early
CPU: 0 PID: 0 Comm: swapper Not tainted 3.10.0-rc5-Cavium-Octeon+ #801
Call Trace:
show_stack+0x68/0x80
warn_slowpath_common+0x78/0xb0
warn_slowpath_fmt+0x38/0x48
start_kernel+0x250/0x410
Suggested fix: Do what we already do in the SMP version of
on_each_cpu(), and use local_irq_save/local_irq_restore. Because we
need a flags variable, make it a static inline to avoid name space
issues.
[ Change from v1: Convert on_each_cpu to a static inline function, add
#include <linux/irqflags.h> to avoid build breakage on some files.
on_each_cpu_mask() and on_each_cpu_cond() suffer the same problem as
on_each_cpu(), but they are not causing !SMP bugs for me, so I will
defer changing them to a less urgent patch. ]
Signed-off-by: David Daney <david.daney@cavium.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sat, 15 Jun 2013 05:18:56 +0000 (19:18 -1000)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs
Pull VFS fixes from Al Viro:
"Several fixes + obvious cleanup (you've missed a couple of open-coded
can_lookup() back then)"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
snd_pcm_link(): fix a leak...
use can_lookup() instead of direct checks of ->i_op->lookup
move exit_task_namespaces() outside of exit_notify()
fput: task_work_add() can fail if the caller has passed exit_task_work()
ncpfs: fix rmdir returns Device or resource busy
Linus Torvalds [Sat, 15 Jun 2013 05:16:31 +0000 (19:16 -1000)]
Merge tag 'for-linus-v3.10-rc6' of git://oss.sgi.com/xfs/xfs
Pull xfs fixes from Ben Myers:
- Remove noisy warnings about experimental support which spams the logs
- Add padding to align directory and attr structures correctly
- Set block number on child buffer on a root btree split
- Disable verifiers during log recovery for non-CRC filesystems
* tag 'for-linus-v3.10-rc6' of git://oss.sgi.com/xfs/xfs:
xfs: don't shutdown log recovery on validation errors
xfs: ensure btree root split sets blkno correctly
xfs: fix implicit padding in directory and attr CRC formats
xfs: don't emit v5 superblock warnings on write
Linus Torvalds [Sat, 15 Jun 2013 05:15:36 +0000 (19:15 -1000)]
Merge tag 'char-misc-3.10-rc5' of git://git./linux/kernel/git/gregkh/char-misc
Pull char / misc fixes from Greg Kroah-Hartman:
"Here are some small mei driver fixes for 3.10-rc6 that fix some
reported problems"
* tag 'char-misc-3.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
mei: me: clear interrupts on the resume path
mei: nfc: fix nfc device freeing
mei: init: Flush scheduled work before resetting the device
Linus Torvalds [Sat, 15 Jun 2013 05:14:39 +0000 (19:14 -1000)]
Merge tag 'usb-3.10-rc5' of git://git./linux/kernel/git/gregkh/usb
Pull USB fixes from Greg Kroah-Hartman:
"Here are some small USB driver fixes that resolve some reported
problems for 3.10-rc6
Nothing major, just 3 USB serial driver fixes, and two chipidea fixes"
* tag 'usb-3.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: chipidea: fix id change handling
usb: chipidea: fix no transceiver case
USB: pl2303: fix device initialisation at open
USB: spcp8x5: fix device initialisation at open
USB: f81232: fix device initialisation at open
Benjamin Herrenschmidt [Sat, 15 Jun 2013 02:13:40 +0000 (12:13 +1000)]
powerpc: Fix missing/delayed calls to irq_work
When replaying interrupts (as a result of the interrupt occurring
while soft-disabled), in the case of the decrementer, we are exclusively
testing for a pending timer target. However we also use decrementer
interrupts to trigger the new "irq_work", which in this case would
be missed.
This change the logic to force a replay in both cases of a timer
boundary reached and a decrementer interrupt having actually occurred
while disabled. The former test is still useful to catch cases where
a CPU having been hard-disabled for a long time completely misses the
interrupt due to a decrementer rollover.
CC: <stable@vger.kernel.org> [v3.4+]
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Tested-by: Steven Rostedt <rostedt@goodmis.org>
Paul Mackerras [Fri, 14 Jun 2013 10:07:41 +0000 (20:07 +1000)]
powerpc: Fix emulation of illegal instructions on PowerNV platform
Normally, the kernel emulates a few instructions that are unimplemented
on some processors (e.g. the old dcba instruction), or privileged (e.g.
mfpvr). The emulation of unimplemented instructions is currently not
working on the PowerNV platform. The reason is that on these machines,
unimplemented and illegal instructions cause a hypervisor emulation
assist interrupt, rather than a program interrupt as on older CPUs.
Our vector for the emulation assist interrupt just calls
program_check_exception() directly, without setting the bit in SRR1
that indicates an illegal instruction interrupt. This fixes it by
making the emulation assist interrupt set that bit before calling
program_check_interrupt(). With this, old programs that use no-longer
implemented instructions such as dcba now work again.
CC: <stable@vger.kernel.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Michael Ellerman [Thu, 13 Jun 2013 11:04:56 +0000 (21:04 +1000)]
powerpc: Fix stack overflow crash in resume_kernel when ftracing
It's possible for us to crash when running with ftrace enabled, eg:
Bad kernel stack pointer
bffffd12 at
c00000000000a454
cpu 0x3: Vector: 300 (Data Access) at [
c00000000ffe3d40]
pc:
c00000000000a454: resume_kernel+0x34/0x60
lr:
c00000000000335c: performance_monitor_common+0x15c/0x180
sp:
bffffd12
msr:
8000000000001032
dar:
bffffd12
dsisr:
42000000
If we look at current's stack (paca->__current->stack) we see it is
equal to
c0000002ecab0000. Our stack is 16K, and comparing to
paca->kstack (
c0000002ecab3e30) we can see that we have overflowed our
kernel stack. This leads to us writing over our struct thread_info, and
in this case we have corrupted thread_info->flags and set
_TIF_EMULATE_STACK_STORE.
Dumping the stack we see:
3:mon> t
c0000002ecab0000
[
c0000002ecab0000]
c00000000002131c .performance_monitor_exception+0x5c/0x70
[
c0000002ecab0080]
c00000000000335c performance_monitor_common+0x15c/0x180
--- Exception: f01 (Performance Monitor) at
c0000000000fb2ec .trace_hardirqs_off+0x1c/0x30
[
c0000002ecab0370]
c00000000016fdb0 .trace_graph_entry+0xb0/0x280 (unreliable)
[
c0000002ecab0410]
c00000000003d038 .prepare_ftrace_return+0x98/0x130
[
c0000002ecab04b0]
c00000000000a920 .ftrace_graph_caller+0x14/0x28
[
c0000002ecab0520]
c0000000000d6b58 .idle_cpu+0x18/0x90
[
c0000002ecab05a0]
c00000000000a934 .return_to_handler+0x0/0x34
[
c0000002ecab0620]
c00000000001e660 .timer_interrupt+0x160/0x300
[
c0000002ecab06d0]
c0000000000025dc decrementer_common+0x15c/0x180
--- Exception: 901 (Decrementer) at
c0000000000104d4 .arch_local_irq_restore+0x74/0xa0
[
c0000002ecab09c0]
c0000000000fe044 .trace_hardirqs_on+0x14/0x30 (unreliable)
[
c0000002ecab0fb0]
c00000000016fe3c .trace_graph_entry+0x13c/0x280
[
c0000002ecab1050]
c00000000003d038 .prepare_ftrace_return+0x98/0x130
[
c0000002ecab10f0]
c00000000000a920 .ftrace_graph_caller+0x14/0x28
[
c0000002ecab1160]
c0000000000161f0 .__ppc64_runlatch_on+0x10/0x40
[
c0000002ecab11d0]
c00000000000a934 .return_to_handler+0x0/0x34
--- Exception: 901 (Decrementer) at
c0000000000104d4 .arch_local_irq_restore+0x74/0xa0
... and so on
__ppc64_runlatch_on() is called from RUNLATCH_ON in the exception entry
path. At that point the irq state is not consistent, ie. interrupts are
hard disabled (by the exception entry), but the paca soft-enabled flag
may be out of sync.
This leads to the local_irq_restore() in trace_graph_entry() actually
enabling interrupts, which we do not want. Because we have not yet
reprogrammed the decrementer we immediately take another decrementer
exception, and recurse.
The fix is twofold. Firstly make sure we call DISABLE_INTS before
calling RUNLATCH_ON. The badly named DISABLE_INTS actually reconciles
the irq state in the paca with the hardware, making it safe again to
call local_irq_save/restore().
Although that should be sufficient to fix the bug, we also mark the
runlatch routines as notrace. They are called very early in the
exception entry and we are asking for trouble tracing them. They are
also fairly uninteresting and tracing them just adds unnecessary
overhead.
[ This regression was introduced by
fe1952fc0afb9a2e4c79f103c08aef5d13db1873
"powerpc: Rework runlatch code" by myself --BenH
]
CC: <stable@vger.kernel.org> [v3.4+]
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>