linux-toradex.git/drivers/memory, branch v4.14-rc7

Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

2017-09-11T03:40:00+00:00

Pull ARM SoC driver updates from Olof Johansson:
 "This branch contains platform-related driver updates for ARM and ARM64.

  Among them:

   - Reset driver updates:
     + New API for dealing with arrays of resets
     + Make unimplemented {de,}assert return success on shared resets
     + MSDKv1 driver
     + Removal of obsolete Gemini reset driver
     + Misc updates for sunxi and Uniphier

   - SoC drivers:
     + Platform SoC driver registration on Tegra
     + Shuffle of Qualcomm drivers into a submenu
     + Allwinner A64 support for SRAM
     + Renesas R-Car R3 support
     + Power domains for Rockchip RK3366

   - Misc updates and smaller fixes for TEE and memory driver
     subsystems"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (54 commits)
  firmware: arm_scpi: fix endianness of dev_id in struct dev_pstate_set
  soc/tegra: fuse: Add missing semi-colon
  soc/tegra: Restrict SoC device registration to Tegra
  drivers: soc: sunxi: add support for A64 and its SRAM C
  drivers: soc: sunxi: add support for remapping func value to reg value
  drivers: soc: sunxi: fix error processing on base address when claiming
  dt-bindings: add binding for Allwinner A64 SRAM controller and SRAM C
  bus: sunxi-rsb: Enable by default for ARM64
  soc/tegra: Register SoC device
  firmware: tegra: set drvdata earlier
  memory: Convert to using %pOF instead of full_name
  soc: Convert to using %pOF instead of full_name
  bus: Convert to using %pOF instead of full_name
  firmware: Convert to using %pOF instead of full_name
  soc: mediatek: add SCPSYS power domain driver for MediaTek MT7622 SoC
  soc: mediatek: add header files required for MT7622 SCPSYS dt-binding
  soc: mediatek: reduce code duplication of scpsys_probe across all SoCs
  dt-bindings: soc: update the binding document for SCPSYS on MediaTek MT7622 SoC
  reset: uniphier: add analog amplifiers reset control
  reset: uniphier: add video input subsystem reset control
  ...

Merge tag 'iommu-updates-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

2017-09-09T22:03:24+00:00

Pull IOMMU updates from Joerg Roedel:
"Slightly more changes than usual this time:

- KDump Kernel IOMMU take-over code for AMD IOMMU. The code now tries
to preserve the mappings of the kernel so that master aborts for
devices are avoided. Master aborts cause some devices to fail in
the kdump kernel, so this code makes the dump more likely to
succeed when AMD IOMMU is enabled.

- common flush queue implementation for IOVA code users. The code is
still optional, but AMD and Intel IOMMU drivers had their own
implementation which is now unified.

- finish support for iommu-groups. All drivers implement this feature
now so that IOMMU core code can rely on it.

- finish support for 'struct iommu_device' in iommu drivers. All
drivers now use the interface.

- new functions in the IOMMU-API for explicit IO/TLB flushing. This
will help to reduce the number of IO/TLB flushes when IOMMU drivers
support this interface.

- support for mt2712 in the Mediatek IOMMU driver

- new IOMMU driver for QCOM hardware

- system PM support for ARM-SMMU

- shutdown method for ARM-SMMU-v3

- some constification patches

- various other small improvements and fixes"

* tag 'iommu-updates-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (87 commits)
iommu/vt-d: Don't be too aggressive when clearing one context entry
iommu: Introduce Interface for IOMMU TLB Flushing
iommu/s390: Constify iommu_ops
iommu/vt-d: Avoid calling virt_to_phys() on null pointer
iommu/vt-d: IOMMU Page Request needs to check if address is canonical.
arm/tegra: Call bus_set_iommu() after iommu_device_register()
iommu/exynos: Constify iommu_ops
iommu/ipmmu-vmsa: Make ipmmu_gather_ops const
iommu/ipmmu-vmsa: Rereserving a free context before setting up a pagetable
iommu/amd: Rename a few flush functions
iommu/amd: Check if domain is NULL in get_domain() and return -EBUSY
iommu/mediatek: Fix a build warning of BIT(32) in ARM
iommu/mediatek: Fix a build fail of m4u_type
iommu: qcom: annotate PM functions as __maybe_unused
iommu/pamu: Fix PAMU boot crash
memory: mtk-smi: Degrade SMI init to module_init
iommu/mediatek: Enlarge the validate PA range for 4GB mode
iommu/mediatek: Disable iommu clock when system suspend
iommu/mediatek: Move pgtable allocation into domain_alloc
iommu/mediatek: Merge 2 M4U HWs into one iommu domain
...

mfd: syscon: atmel-smc: Add helper to retrieve register layout

2017-09-05T07:46:01+00:00

For HSMC controller, the register layout depends on the device i.e. the
offset of setup, pulse, cycle, mode and timings registers is not the
same. An helper is added to provide the correct register layout.

Fixes: fe9d7cb22ef3 ("mfd: syscon: atmel-smc: Add new helpers to ease
SMC regs manipulation")
Suggested-by: Boris Brezillon 
Signed-off-by: Ludovic Desroches 
Acked-by: Boris Brezillon 
Acked-by: Nicolas Ferre 
Acked-by: Alexandre Belloni 
Signed-off-by: Lee Jones

Merge branches 'arm/exynos', 'arm/renesas', 'arm/rockchip', 'arm/omap', 'arm/mediatek', 'arm/tegra', 'arm/qcom', 'arm/smmu', 'ppc/pamu', 'x86/vt-d', 'x86/amd', 's390' and 'core' into next

2017-09-01T09:31:42+00:00

memory: mtk-smi: Degrade SMI init to module_init

2017-08-22T14:38:00+00:00

The initialization of MediaTek power manager(SCPSYS) is
builtin_platform_driver, and SMI must depend on power-domain.
Thus, currently subsys_initcall for SMI is unnecessary, SMI will be
always probe defered by power-domain. Degrade it to module_init.

In addition, there are two small changes about the probe sequence:
1) Delete this two lines.
    	if (!dev->pm_domain)
		return -EPROBE_DEFER;
   This is not helpful. the platform driver framework guarantee this.
   The "dev_pm_domain_attach" in the "platform_drv_probe" will return
   EPROBE_DEFER if its powerdomain is not ready.

2) Add the probe-defer for the smi-larb device should waiting for
   smi-common.
   In mt2712, there are 2 smi-commons, 10 smi-larbs. All will be
   probe-defered by the power-domain, there is seldom case that
   smi-larb probe done before smi-common. then it will hang like
   this:

   Unable to handle kernel NULL pointer dereference at virtual address
00000000 pgd = ffffff800a4e0000
[00000000] *pgd=00000000beffe003[   17.610026] , *pud=00000000beffe003
...
[] mtk_smi_enable+0x1c/0xd0
[] mtk_smi_larb_get+0x30/0x98
[] mtk_mipicsi0_resume+0x38/0x1b8
[] pm_generic_runtime_resume+0x3c/0x58
[] __genpd_runtime_resume+0x38/0x98
[] genpd_runtime_resume+0x164/0x220
[] __rpm_callback+0x78/0xa0
[] rpm_callback+0x38/0xa0
[] rpm_resume+0x4a4/0x6f8
[] __pm_runtime_resume+0x64/0xa0
[] mtk_mipicsi0_probe+0x40c/0xb70
[] platform_drv_probe+0x58/0xc0
[] driver_probe_device+0x284/0x438
[] __device_attach_driver+0xb4/0x160
[] bus_for_each_drv+0x68/0xa8
[] __device_attach+0xd4/0x168
[] device_initial_probe+0x24/0x30
[] bus_probe_device+0xa0/0xa8
[] deferred_probe_work_func+0x94/0xf0
[] process_one_work+0x1d8/0x6e0

Signed-off-by: Yong Wu 
Signed-off-by: Joerg Roedel

iommu/mediatek: Add mt2712 IOMMU support

2017-08-22T14:37:58+00:00

The M4U IP blocks in mt2712 is MTK's generation2 M4U which use the
ARM Short-descriptor like mt8173, and most of the HW registers are
the same.

The difference is that there are 2 M4U HWs in mt2712 while there's
only one in mt8173. The purpose of 2 M4U HWs is for balance the
bandwidth.

Normally if there are 2 M4U HWs, there should be 2 iommu domains,
each M4U has a iommu domain.

Signed-off-by: Yong Wu 
Signed-off-by: Joerg Roedel

memory: Convert to using %pOF instead of full_name

2017-08-16T19:37:00+00:00

Now that we have a custom printf format specifier, convert users of
full_name to use %pOF instead. This is preparation to remove storing
of the full path string for each node.

Signed-off-by: Rob Herring 
Acked-by: Alexandre Belloni 
Acked-by: Roger Quadros 
Cc: Nicolas Ferre 
Cc: Alexandre Belloni 
Cc: Tony Lindgren 
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-omap@vger.kernel.org
Signed-off-by: Arnd Bergmann

memory: mtk-smi: Handle return value of clk_prepare_enable

2017-08-15T15:46:23+00:00

clk_prepare_enable() can fail here and we must check its return value.

Signed-off-by: Arvind Yadav 
Signed-off-by: Joerg Roedel

memory: mtk-smi: add larbid handle routine

2017-08-04T10:04:58+00:00

In the commit 3c8f4ad85c4b ("memory/mediatek: add support for mt2701"),
the larb->larbid was added but not initialized.
Mediatek's gen1 smi need this hardware larbid information to get the
register offset which controls whether enable iommu for this larb.
This patch add the initialize routine for larbid.

Reviewed-by: Matthias Brugger 
Signed-off-by: Honghui Zhang 
Signed-off-by: Joerg Roedel

memory: mtk-smi: Use of_device_get_match_data helper

2017-08-04T10:04:57+00:00

Replace custom code with generic helper to retrieve driver data.

Signed-off-by: Honghui Zhang 
Signed-off-by: Joerg Roedel