linux-stable.git/arch/powerpc/boot, branch v3.5.2 Linux kernel stable tree powerpc/85xx: use the BRx registers to enable indirect mode on the P1022DS 2012-08-09T15:22:36+00:00 Timur Tabi timur@freescale.com 2012-07-05T15:08:28+00:00 69f699e6189772036175b3b7d362c82b0d944d4d commit 6bd825f02966be8ba544047cab313d6032c23819 upstream. In order to enable the DIU video controller on the P1022DS, the FPGA needs to be switched to "indirect mode", where the localbus is disabled and the FPGA is accessed via writes to localbus chip select signals CS0 and CS1. To obtain the address of CS0 and CS1, the platform driver uses an "indirect pixis mode" device tree node. This node assumes that the localbus 'ranges' property is sorted in chip-select order. That is, reg value 0 maps to CS0, reg value 1 maps to CS1, etc. This is how the 'ranges' property is supposed to be arranged. Unfortunately, the 'ranges' property is often mis-arranged, and not just on the P1022DS. Linux normally does not care, since it does not program the localbus. But the indirect-mode code on the P1022DS does care. The "proper" fix is to have U-Boot fix the 'ranges' property, but this would be too cumbersome. The names and 'reg' properties of all the localbus devices would also need to be updated, and determining which localbus device maps to which chip select is board-specific. Instead, we determine the CS0/CS1 base addresses the same way that U-boot does -- by reading the BRx registers directly and mapping them to physical addresses. This code is simpler and more reliable, and it does not require a U-boot or device tree change. Since the indirect pixis device tree node is no longer needed, the node is deleted from the DTS. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 6bd825f02966be8ba544047cab313d6032c23819 upstream.

In order to enable the DIU video controller on the P1022DS, the FPGA needs
to be switched to "indirect mode", where the localbus is disabled and
the FPGA is accessed via writes to localbus chip select signals CS0 and CS1.

To obtain the address of CS0 and CS1, the platform driver uses an "indirect
pixis mode" device tree node.  This node assumes that the localbus 'ranges'
property is sorted in chip-select order.  That is, reg value 0 maps to
CS0, reg value 1 maps to CS1, etc.  This is how the 'ranges' property is
supposed to be arranged.

Unfortunately, the 'ranges' property is often mis-arranged, and not just on
the P1022DS.  Linux normally does not care, since it does not program the
localbus.  But the indirect-mode code on the P1022DS does care.

The "proper" fix is to have U-Boot fix the 'ranges' property, but this would
be too cumbersome.  The names and 'reg' properties of all the localbus
devices would also need to be updated, and determining which localbus device
maps to which chip select is board-specific.

Instead, we determine the CS0/CS1 base addresses the same way that U-boot
does -- by reading the BRx registers directly and mapping them to physical
addresses.  This code is simpler and more reliable, and it does not require
a U-boot or device tree change.

Since the indirect pixis device tree node is no longer needed, the node is
deleted from the DTS.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Merge tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc 2012-05-26T19:22:27+00:00 Linus Torvalds torvalds@linux-foundation.org 2012-05-26T19:22:27+00:00 ce53044c68cf4fb6c50a2a0d88786be65fae7235 Pull arm-soc driver specific updates from Olof Johansson: "These changes are specific to some driver that may be used by multiple boards or socs. The most significant change in here is the move of the samsung iommu code from a platform specific in-kernel interface to the generic iommu subsystem." Fix up trivial conflicts in arch/arm/mach-exynos/Kconfig * tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (28 commits) mmc: dt: Consolidate DT bindings iommu/exynos: Add iommu driver for EXYNOS Platforms ARM: davinci: optimize the DMA ISR ARM: davinci: implement DEBUG_LL port choice ARM: tegra: Add SMMU enabler in AHB ARM: tegra: Add Tegra AHB driver Input: pxa27x_keypad add choice to set direct_key_mask Input: pxa27x_keypad direct key may be low active Input: pxa27x_keypad bug fix for direct_key_mask Input: pxa27x_keypad keep clock on as wakeup source ARM: dt: tegra: pinmux changes for USB ULPI ARM: tegra: add USB ULPI PHY reset GPIO to device tree ARM: tegra: don't hard-code USB ULPI PHY reset_gpio ARM: tegra: change pll_p_out4's rate to 24MHz ARM: tegra: fix pclk rate ARM: tegra: reparent sclk to pll_c_out1 ARM: tegra: Add pllc clock init table ARM: dt: tegra cardhu: basic audio support ARM: dt: tegra30.dtsi: Add audio-related nodes ARM: tegra: add AUXDATA required for audio ... 
Pull arm-soc driver specific updates from Olof Johansson:
 "These changes are specific to some driver that may be used by multiple
  boards or socs.  The most significant change in here is the move of
  the samsung iommu code from a platform specific in-kernel interface to
  the generic iommu subsystem."

Fix up trivial conflicts in arch/arm/mach-exynos/Kconfig

* tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (28 commits)
  mmc: dt: Consolidate DT bindings
  iommu/exynos: Add iommu driver for EXYNOS Platforms
  ARM: davinci: optimize the DMA ISR
  ARM: davinci: implement DEBUG_LL port choice
  ARM: tegra: Add SMMU enabler in AHB
  ARM: tegra: Add Tegra AHB driver
  Input: pxa27x_keypad add choice to set direct_key_mask
  Input: pxa27x_keypad direct key may be low active
  Input: pxa27x_keypad bug fix for direct_key_mask
  Input: pxa27x_keypad keep clock on as wakeup source
  ARM: dt: tegra: pinmux changes for USB ULPI
  ARM: tegra: add USB ULPI PHY reset GPIO to device tree
  ARM: tegra: don't hard-code USB ULPI PHY reset_gpio
  ARM: tegra: change pll_p_out4's rate to 24MHz
  ARM: tegra: fix pclk rate
  ARM: tegra: reparent sclk to pll_c_out1
  ARM: tegra: Add pllc clock init table
  ARM: dt: tegra cardhu: basic audio support
  ARM: dt: tegra30.dtsi: Add audio-related nodes
  ARM: tegra: add AUXDATA required for audio
  ...
Merge branch 'drivers/mmc' into next/drivers 2012-05-15T11:31:11+00:00 Arnd Bergmann arnd@arndb.de 2012-05-14T19:48:45+00:00 c49314fa6c7d2c130d850b30980cffab53a40592 * drivers/mmc: mmc: dt: Consolidate DT bindings Also pulls in the omap/dt-missed-3.4 branch as a dependency. Signed-off-by: Arnd Bergmann <arnd@arndb.de> 
* drivers/mmc:
  mmc: dt: Consolidate DT bindings

Also pulls in the omap/dt-missed-3.4 branch as a dependency.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
mmc: dt: Consolidate DT bindings 2012-05-15T11:29:42+00:00 Arnd Bergmann arnd@arndb.de 2012-05-13T04:14:24+00:00 7f217794ffa72f208a250b79ab0b7ea3de19677f This patch unifies the current DT MMC bindings documentation and code, adds generic MMC DT bindings documentation, and updates .dts files for consistency. [cjb: typo fixes, addition of max-frequency property] Signed-off-by: Chris Ball <cjb@laptop.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> 
This patch unifies the current DT MMC bindings documentation and code,
adds generic MMC DT bindings documentation, and updates .dts files for
consistency.

[cjb: typo fixes, addition of max-frequency property]
Signed-off-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
powerpc/44x: Add PCI MSI node for Maui APM821xx SoC and Bluestone board in DTS 2012-05-03T12:58:21+00:00 Mai La mla@apm.com 2012-03-08T17:18:45+00:00 9c6b2353dfb80ae843b831c03fc53ddc5c3949ff Signed-off-by: Mai La <mla@apm.com> Signed-off-by: Josh Boyer <jwboyer@gmail.com> 
Signed-off-by: Mai La <mla@apm.com>
Signed-off-by: Josh Boyer <jwboyer@gmail.com>
powerpc/mpc85xx: add MPIC message dts node 2012-04-19T20:10:08+00:00 Mingkai Hu Mingkai.hu@freescale.com 2012-04-16T02:05:08+00:00 4351f30a35b8c6a6b6d4d36e5c2dc8ec0262b2ca Signed-off-by: Mingkai Hu <Mingkai.hu@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> 
Signed-off-by: Mingkai Hu <Mingkai.hu@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
powerpc/dts: Removed fsl,msi property from dts. 2012-03-29T13:14:15+00:00 Diana CRACIUN Diana.Craciun@freescale.com 2012-02-09T13:41:00+00:00 8a57d734004b8018f3d320455c1816b1e6810265 The association in the decice tree between PCI and MSI using fsl,msi property was an artificial one and it does not reflect the actual hardware. Signed-off-by: Diana CRACIUN <Diana.Craciun@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> 
The association in the decice tree between PCI and MSI
using fsl,msi property was an artificial one and it does
not reflect the actual hardware.

Signed-off-by: Diana CRACIUN <Diana.Craciun@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
powerpc/85xx: add the P1020UTM-PC DTS support 2012-03-29T13:14:11+00:00 Jerry Huang Chang-Ming.Huang@freescale.com 2012-03-20T06:24:45+00:00 2fc1fc0338d568723b32e2d7a79b644f6137fd00 Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> 
Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
powerpc/85xx: add the P1020MBG-PC DTS support 2012-03-29T13:14:09+00:00 Jerry Huang Chang-Ming.Huang@freescale.com 2012-03-20T06:24:44+00:00 72ea4d48863679911330f977144b2b2bd62dd92a Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> 
Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
powerpc: Random little legacy iSeries removal tidy ups 2012-03-28T00:33:23+00:00 Stephen Rothwell sfr@canb.auug.org.au 2012-03-21T18:23:27+00:00 1d9a47315042606b4217691bcea36cfa6ccbde66 Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> 
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>