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* s390/dasd: retry partition detectionStefan Haberland2014-11-281-2/+24
| | | | | | | | | | In case somebody attempted to open the device during online processing the partition detection ioctl may have failed. Added a retry loop to avoid not detected partitions. Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/dasd: fix list corruption for sleep_on requestsStefan Haberland2014-11-281-3/+0
| | | | | | | | | | Fix race for sleep_on requests leading to list corruption. The SLEEP_ON_END_TAG is set during CQR clean up. Remove it from interrupt handler to avoid the CQR from being cleared when it is still in the device_queue. Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/dasd: fix infinite term I/O loopStefan Haberland2014-11-281-0/+14
| | | | | | | | | | | During device activation all paths could be lost and since the device is not active it has no indication of this fact - hence the CQR will time-out. The following cancelation might fail with -EINVAL because CIO took over control and started path verification. In this case mark the CQR as being CLEARED since it could not be running any more. Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/dasd: remove unused codeStefan Haberland2014-11-281-12/+2
| | | | | Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/pci: Deletion of unnecessary checks before the function call ↵Markus Elfring2014-11-281-5/+2
| | | | | | | | | | | | | "debug_unregister" The debug_unregister() function performs also input parameter validation. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/ftrace: provide working ftrace_return_address()Heiko Carstens2014-11-281-0/+2
| | | | | | | | | | | | | | | | The common code ftrace_return_address(n), which is just a wrapper for __builtin_return_address(n), will only work for n > 0 if CONFIG_FRAME_POINTER is set to 'y'. Otherwise it will return 0. Since on s390 we will never have that config option set to 'y' ftrace_return_address() won't work at all for n > 0. Luckily we always compile the kernel with -mkernel-backchain which in turn means that __builtin_return_address(n) will always work. So let ftrace_return_address(n) map to __builtin_return_address(n). Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/sclp_async: add Kconfig option to specify the component idMartin Schwidefsky2014-11-282-1/+12
| | | | | | | | Allow to specify the Compoment ID for Call Home via the kernel configuration. This removes the need for distribution specific patch against the sclp_async.c source file. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/traps: die on translation exceptionsHeiko Carstens2014-11-211-2/+6
| | | | | | | | | | | | Translation exceptions should never happen, since that implies that either we screwed up the page tables or missed to properly flush the TLB. In both cases we should not just simply kill user space or walk the kernel exception tables. Instead an oops or a panic (panic_on_oops) is the better answer. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/traps: print interrupt code and instruction length codeHeiko Carstens2014-11-213-4/+6
| | | | | | | | | | | | It always confuses me to see the mixed instruction length code and interruption code on user space faults, while the message clearly says it is the interruption code. So split the value and print both values separately. Also add the ILC output to the die() message, so thar user and kernel space faults contain the same information. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/kernel: add system calls for PCI memory accessAlexey Ishchuk2014-11-197-2/+127
| | | | | | | | | | | Add the new __NR_s390_pci_mmio_write and __NR_s390_pci_mmio_read system calls to allow user space applications to access device PCI I/O memory pages on s390x platform. [ Martin Schwidefsky: some code beautification ] Signed-off-by: Alexey Ishchuk <aishchuk@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: fix ptrace of user area if the inferior uses vector registersMartin Schwidefsky2014-11-191-22/+75
| | | | | | | | | | | | The floating point registers of a process that uses vector instruction are not store into task->thread.fp_regs anymore but in the upper halves of the first 16 vector registers. The ptrace interface for the peeks and pokes to the user area fails to take this into account. Fix __peek_user[_compat] and __poke_user[_compat] to use the vector array for the floating pointer register if the process has one. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/irq: use irq 0Sebastian Ott2014-11-182-11/+5
| | | | | | | | | | Irq 0 is currently unused on s390. Since there is no reason to do this start counting at the beginning and gain an additional irq. Also correctly report the smallest usable irq number for dynamic allocation. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/io: add ioport_map stubsFrank Blaschka2014-11-181-0/+9
| | | | | | | add ioport_map stubs to make vfio build on s390. Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/docs: Remove sections that are not related to s390Thomas Huth2014-11-181-374/+0
| | | | | | | | | Information how to use the GCC pre-processor, objdump, strace, top, etc. are generic and not specific to the S390 architecture, so we do not need this information in Debugging390.txt Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/docs: Fix the documentation of the address spacesThomas Huth2014-11-181-27/+61
| | | | | | | | | | | The information about the address spaces was completely outdated, since the usage of the address spaces changed quite a bit since the early days. This patch now updates the information about the usage of the address spaces, mostly by using the description from Heiko's patch "rework uaccess code - fix locking issues" (457f2180951cdcbfb4657ddcc83b486e93497f56). Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/cpum_sf: Remove initialization of PMU event indexHendrik Brueckner2014-11-031-1/+0
| | | | | | | | | | The git commit c719f56092add9b3d4192f57c64ce7af11105130 "perf: Fix and clean up initialization of pmu::event_idx" removed the PMU event index callback for all architectures but x86, remove the initialization of the event index as well. Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/signal: add sparse annotationsMartin Schwidefsky2014-11-032-2/+2
| | | | | | | | | | | | | | | | Fix the following warnings from the sparse code checker: arch/s390/kernel/signal.c:374:38: warning: cast removes address space of expression arch/s390/kernel/signal.c:374:65: warning: incorrect type in initializer (different address spaces) arch/s390/kernel/signal.c:374:65: expected unsigned short [noderef] [usertype] <asn:1>*svc arch/s390/kernel/signal.c:374:65: got void * arch/s390/kernel/compat_signal.c:437:38: warning: cast removes address space of expression arch/s390/kernel/compat_signal.c:437:65: warning: incorrect type in initializer (different address spaces) arch/s390/kernel/compat_signal.c:437:65: expected unsigned short [noderef] [usertype] <asn:1>*svc arch/s390/kernel/compat_signal.c:437:65: got void * Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/mm: use correct unlock function in gmap_ipte_notifyMartin Schwidefsky2014-11-031-1/+1
| | | | | | | | The page table lock is acquired with a call to get_locked_pte, replace the plain spin_unlock with the correct unlock function pte_unmap_unlock. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/pci: add sparse annotationsMartin Schwidefsky2014-11-032-4/+8
| | | | | | | | | | | | Fix the following warnings from the sparse code checker: arch/s390/include/asm/pci_io.h:165:49: warning: cast removes address space of expression arch/s390/pci/pci.c:476:44: warning: cast removes address space of expression arch/s390/pci/pci.c:491:36: warning: incorrect type in argument 2 (different address spaces) arch/s390/pci/pci.c:491:36: expected void [noderef] <asn:2>*addr arch/s390/pci/pci.c:491:36: got void *<noident> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/pci: improve irq number check for msixSebastian Ott2014-11-033-6/+3
| | | | | | | | | | | | | | | | s390s arch_setup_msi_irqs function ensures that we don't return with more irqs than the PCI architecture allows and that a single PCI function doesn't consume more irqs than the kernel is configured for. At least the last check doesn't help much and should take the sum of all irqs into account. Since that's already done by irq_alloc_desc we can remove this check. As for the first check we should use the value provided by the firmware which can be less than what the PCI architecture allows. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/cmpxchg: use compiler builtinsMartin Schwidefsky2014-11-033-234/+19
| | | | | | | | | | | | | | | | The kernel build for s390 fails for gcc compilers with version 3.x, set the minimum required version of gcc to version 4.3. As the atomic builtins are available with all gcc 4.x compilers, use the __sync_val_compare_and_swap and __sync_bool_compare_and_swap functions to replace the complex macro and inline assembler magic in include/asm/cmpxchg.h. The compiler can just-do-it and generates better code with the builtins. While we are at it use __sync_bool_compare_and_swap for the _raw_compare_and_swap function in the spinlock code as well. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/mm: pmdp_get_and_clear_full optimizationMartin Schwidefsky2014-10-273-1/+26
| | | | | | | | | Analog to ptep_get_and_clear_full define a variant of the pmpd_get_and_clear primitive which gets the full hint from the mmu_gather struct. This allows s390 to avoid a costly instruction when destroying an address space. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/mm: missing pte for gmap_ipte_notify should trigger a VM_BUGDominik Dingel2014-10-271-2/+1
| | | | | | | | After fixup_user_fault does not fail we have a writeable pte. That pte might transform but it should not vanish. Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/kprobes: make use of NOKPROBE_SYMBOL()Heiko Carstens2014-10-277-46/+74
| | | | | | | Use NOKPROBE_SYMBOL() instead of __kprobes annotation. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/ftrace,kprobes: allow to patch first instructionHeiko Carstens2014-10-2713-92/+214
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the function tracer is enabled, allow to set kprobes on the first instruction of a function (which is the function trace caller): If no kprobe is set handling of enabling and disabling function tracing of a function simply patches the first instruction. Either it is a nop (right now it's an unconditional branch, which skips the mcount block), or it's a branch to the ftrace_caller() function. If a kprobe is being placed on a function tracer calling instruction we encode if we actually have a nop or branch in the remaining bytes after the breakpoint instruction (illegal opcode). This is possible, since the size of the instruction used for the nop and branch is six bytes, while the size of the breakpoint is only two bytes. Therefore the first two bytes contain the illegal opcode and the last four bytes contain either "0" for nop or "1" for branch. The kprobes code will then execute/simulate the correct instruction. Instruction patching for kprobes and function tracer is always done with stop_machine(). Therefore we don't have any races where an instruction is patched concurrently on a different cpu. Besides that also the program check handler which executes the function trace caller instruction won't be executed concurrently to any stop_machine() execution. This allows to keep full fault based kprobes handling which generates correct pt_regs contents automatically. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* kprobes: introduce weak arch_check_ftrace_location() helper functionHeiko Carstens2014-10-272-7/+12
| | | | | | | | | | | | Introduce weak arch_check_ftrace_location() helper function which architectures can override in order to implement handling of kprobes on function tracer call sites on their own, without depending on common code or implementing the KPROBES_ON_FTRACE feature. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/mm: disable KSM for storage key enabled pagesDominik Dingel2014-10-273-7/+28
| | | | | | | | | | When storage keys are enabled unmerge already merged pages and prevent new pages from being merged. Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/mm: prevent and break zero page mappings in case of storage keysDominik Dingel2014-10-272-1/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | As soon as storage keys are enabled we need to stop working on zero page mappings to prevent inconsistencies between storage keys and pgste. Otherwise following data corruption could happen: 1) guest enables storage key 2) guest sets storage key for not mapped page X -> change goes to PGSTE 3) guest reads from page X -> as X was not dirty before, the page will be zero page backed, storage key from PGSTE for X will go to storage key for zero page 4) guest sets storage key for not mapped page Y (same logic as above 5) guest reads from page Y -> as Y was not dirty before, the page will be zero page backed, storage key from PGSTE for Y will got to storage key for zero page overwriting storage key for X While holding the mmap sem, we are safe against changes on entries we already fixed, as every fault would need to take the mmap_sem (read). Other vCPUs executing storage key instructions will get a one time interception and be serialized also with mmap_sem. Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* mm: introduce mm_forbids_zeropage functionDominik Dingel2014-10-273-2/+13
| | | | | | | | | | Add a new function stub to allow architectures to disable for an mm_structthe backing of non-present, anonymous pages with read-only empty zero pages. Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/mm: recfactor global pgste updatesDominik Dingel2014-10-274-102/+56
| | | | | | | | | | | Replace the s390 specific page table walker for the pgste updates with a call to the common code walk_page_range function. There are now two pte modification functions, one for the reset of the CMMA state and another one for the initialization of the storage keys. Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: update default configurationMartin Schwidefsky2014-10-275-74/+32
| | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/vdso: fix stack corruptionHeiko Carstens2014-10-274-16/+29
| | | | | | | | | | | | | | The kernel provided vdso functions do not get a stack frame from the calling function and therefore may not change the stack contents, unless they allocate space on their own. This problem was exposed with 070b7be633dc "s390/vdso: replace stck with stcke" which writes 16 bytes instead of 8 bytes into the stack frame. These additional 8 bytes however were indeed used by the caller (glibc) to save data and therefore this data was corrupted by the vdso code. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/time: use stck clock fast for do_account_vtimeMartin Schwidefsky2014-10-271-0/+4
| | | | | | | The last high frequency call site of the STCK instruction is do_account_vtime. Replace it with the faster STCKF instruction. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* Linux 3.18-rc2v3.18-rc2Linus Torvalds2014-10-271-1/+1
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* Merge tag 'armsoc-for-rc2' of ↵Linus Torvalds2014-10-2618-46/+107
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC fixes from Olof Johansson: "Another week, another small batch of fixes. Most of these make zynq, socfpga and sunxi platforms work a bit better: - due to new requirements for regulators, DWMMC on socfpga broke past v3.17 - SMP spinup fix for socfpga - a few DT fixes for zynq - another option (FIXED_REGULATOR) for sunxi is needed that used to be selected by other options but no longer is. - a couple of small DT fixes for at91 - ...and a couple for i.MX" * tag 'armsoc-for-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: ARM: dts: imx28-evk: Let i2c0 run at 100kHz ARM: i.MX6: Fix "emi" clock name typo ARM: multi_v7_defconfig: enable CONFIG_MMC_DW_ROCKCHIP ARM: sunxi_defconfig: enable CONFIG_REGULATOR_FIXED_VOLTAGE ARM: dts: socfpga: Add a 3.3V fixed regulator node ARM: dts: socfpga: Fix SD card detect ARM: dts: socfpga: rename gpio nodes ARM: at91/dt: sam9263: fix PLLB frequencies power: reset: at91-reset: fix power down register MAINTAINERS: add atmel ssc driver maintainer entry arm: socfpga: fix fetching cpu1start_addr for SMP ARM: zynq: DT: trivial: Fix mc node ARM: zynq: DT: Add cadence watchdog node ARM: zynq: DT: Add missing reference for memory-controller ARM: zynq: DT: Add missing reference for ADC ARM: zynq: DT: Add missing address for L2 pl310 ARM: zynq: DT: Remove 222 MHz OPP ARM: zynq: DT: Fix GEM register area size
| * Merge tag 'imx-fixes-3.18' of ↵Olof Johansson2014-10-263-12/+11
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into fixes Merge "ARM: imx: fixes for 3.18" from Shawn Guo: The i.MX fixes for 3.18: - Revert one patch which increases I2C bus frequency on imx28-evk - Fix a typo on imx6q EIM clock name * tag 'imx-fixes-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux: ARM: dts: imx28-evk: Let i2c0 run at 100kHz ARM: i.MX6: Fix "emi" clock name typo Signed-off-by: Olof Johansson <olof@lixom.net>
| | * ARM: dts: imx28-evk: Let i2c0 run at 100kHzFabio Estevam2014-10-251-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 78b81f4666fb ("ARM: dts: imx28-evk: Run I2C0 at 400kHz") caused issues when doing the following sequence in loop: - Boot the kernel - Perform audio playback - Reboot the system via 'reboot' command In many times the audio card cannot be probed, which causes playback to fail. After restoring to the original i2c0 frequency of 100kHz there is no such problem anymore. This reverts commit 78b81f4666fbb22a20b1e63e5baf197ad2e90e88. Cc: <stable@vger.kernel.org> # 3.16+ Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
| | * ARM: i.MX6: Fix "emi" clock name typoSteve Longerbeam2014-10-252-11/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix a typo error, the "emi" names refer to the eim clocks. The change fixes typo in EIM and EIM_SLOW pre-output dividers and selectors clock names. Notably EIM_SLOW clock itself is named correctly. Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com> [vladimir_zapolskiy@mentor.com: ported to v3.17] Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com> Cc: Sascha Hauer <kernel@pengutronix.de> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
| * | Merge tag 'socfpga_fixes_for_3.18' of ↵Olof Johansson2014-10-249-23/+65
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.rocketboards.org/linux-socfpga-next into fixes Merge "SOCFPGA fixes for 3.18" from Dinh Nguyen: These patches fixes an SMP and SDMMC driver hang during boot up on the SOCFPGA platform. Patch "arm: socfpga: fix fetching cpu1start_addr for SMP" fixes the SMP trampoline code in order for CPU1 to correctly fetch it's cpu1start_addr. Patch "ARM: dts: socfpga: rename gpio nodes" renames that GPIO node in order to allow a standard way of specifying status="okay" in the board DTS file. Patch "ARM: dts: socfpga: Fix SD card detect" fixes a SDMMC driver hang during boot. The reason for the hang was the deferred probe of the SDMMC driver was waiting for the GPIO resource that would never come. Patch "ARM: dts: socfpga: Add a 3.3V fixed regulator node" adds a fixed regulator node for the SDMMC driver to use. * tag 'socfpga_fixes_for_3.18' of git://git.rocketboards.org/linux-socfpga-next: ARM: dts: socfpga: Add a 3.3V fixed regulator node ARM: dts: socfpga: Fix SD card detect ARM: dts: socfpga: rename gpio nodes arm: socfpga: fix fetching cpu1start_addr for SMP Signed-off-by: Olof Johansson <olof@lixom.net>
| | * | ARM: dts: socfpga: Add a 3.3V fixed regulator nodeDinh Nguyen2014-10-234-1/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Without the 3.3V regulator node, the SDMMC driver will give these warnings: dw_mmc ff704000.dwmmc0: No vmmc regulator found dw_mmc ff704000.dwmmc0: No vqmmc regulator found This patch adds the regulator node, and points the SD/MMC to the regulator. Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com> Reviewed-by: Doug Anderson <dianders@chromium.org> --- v3: Rename nodes to have schematic-name_regulator and remove "boot-on" and "always-on" v2: Move the regulator nodes to their respective board dts file and correctly rename them to match the schematic
| | * | ARM: dts: socfpga: Fix SD card detectDinh Nguyen2014-10-231-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Without this patch, the booting the SOCFPGA platform would hang at the SDMMC driver loading. The issue, debugged by Doug Anderson, turned out to be that the GPIO bank used by the SD card-detect was not set to status="okay". Also update the cd-gpios to point to portb of the &gpio1 GPIO IP. Suggested-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Doug Anderson <dianders@chromium.org> Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com> --- v4: Use &gpio1 to set status="okay" and update cd-gpio=&portb v3: Correctly degugged the issue to be a gpio node not having status="okay"
| | * | ARM: dts: socfpga: rename gpio nodesDinh Nguyen2014-10-231-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since the Synopsys GPIO IP can support multiple ports of varying widths, it would make more sense to have the GPIO node DTS entry as this: gpio0: gpio@ff708000{ porta{ }; }; Also, this is documented in the snps-dwapb-gpio.txt. Suggested-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Doug Anderson <dianders@chromium.org> Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
| | * | arm: socfpga: fix fetching cpu1start_addr for SMPDinh Nguyen2014-10-214-15/+20
| | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When CPU1 is brought out of reset, it's MMU is not turned on yet, so it will only be able to use physical addresses. For systems with that have the MMU page configured for 0xC0000000, 0x80000000, or 0x40000000 "BIC 0x40000000" will work just fine, as it was just converting the virtual address of &cpu1start_addr into a physical address, ie. 0xC0000000 became 0x80000000. So for systems where the SDRAM controller was able to do a wrap-around access, this was working fine, as it was just dropping the MSB, but for systems where out of bounds memory access is not allowed, this would not allow CPU1 to correctly fetch &cpu1start_addr. This patch fixes the secondary_trampoline code to correctly fetch the physical address of cpu1start_addr directly. The patch will subtract the correct PAGE_OFFSET from &cpu1start_addr. And since on this platform, the physical memory will always start at 0x0, subtracting PAGE_OFFSET from &cpu1start_addr will allow CPU1 to correctly fetch the value of cpu1start_addr. While at it, change the name of cpu1start_addr to socfpga_cpu1start_addr to avoid any future naming collisions for multiplatform image. Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com> --- v4: Updated commit log to correctly lay out the usage of PAGE_OFFSET and add comments to the same effect. v3: Used PAGE_OFFSET to get the physical address v2: Correctly get the physical address instead of just a BIC hack.
| * | Merge tag 'at91-fixes' of ↵Olof Johansson2014-10-243-4/+12
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91 into fixes Merge "at91: fixes for v3.18 #1" from Nicholas Ferre: First AT91 fixes for 3.18: - one more MAINTAINERS entry for the SSC driver - a fix for the newly introduced power/reset driver - a fix on at91sam9263 USB due to PLLB misconfiguration * tag 'at91-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91: ARM: at91/dt: sam9263: fix PLLB frequencies power: reset: at91-reset: fix power down register MAINTAINERS: add atmel ssc driver maintainer entry Signed-off-by: Olof Johansson <olof@lixom.net>
| | * | ARM: at91/dt: sam9263: fix PLLB frequenciesBoris Brezillon2014-10-221-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PLLB input and output ranges were wrongly copied from at91sam9261 as the datasheet didn't mention explicitly PLLB. Correct their values. This fixes USB. Reported-by: Andreas Henriksson <andreas.henriksson@endian.se> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Tested-by: Andreas Henriksson <andreas.henriksson@endian.se> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
| | * | power: reset: at91-reset: fix power down registerAlexandre Belloni2014-10-221-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the case of at91sam9g45_restart(), the driver is writing AT91_DDRSDRC_LPCB_POWER_DOWN to AT91_DDRSDRC_RTR, this should actually be AT91_DDRSDRC_LPR. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Sebastian Reichel <sre@kernel.org> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
| | * | MAINTAINERS: add atmel ssc driver maintainer entryBo Shen2014-10-221-0/+7
| | |/ | | | | | | | | | | | | Signed-off-by: Bo Shen <voice.shen@atmel.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
| * | Merge tag 'zynq-dt-fixes-for-3.18' of https://github.com/Xilinx/linux-xlnx ↵Olof Johansson2014-10-241-7/+17
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | into fixes Merge "Xilinx Zynq dt fixes for v3.18" from Michal Simek: arm: Xilinx Zynq DT fixes for v3.18 - Fix gem register size - Fix OPP - Add missing references - Trivial cleanup * tag 'zynq-dt-fixes-for-3.18' of https://github.com/Xilinx/linux-xlnx: ARM: zynq: DT: trivial: Fix mc node ARM: zynq: DT: Add cadence watchdog node ARM: zynq: DT: Add missing reference for memory-controller ARM: zynq: DT: Add missing reference for ADC ARM: zynq: DT: Add missing address for L2 pl310 ARM: zynq: DT: Remove 222 MHz OPP ARM: zynq: DT: Fix GEM register area size Signed-off-by: Olof Johansson <olof@lixom.net>
| | * | ARM: zynq: DT: trivial: Fix mc nodeMichal Simek2014-10-201-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | sed -i 's/}\ ;/};/g' Signed-off-by: Michal Simek <michal.simek@xilinx.com>
| | * | ARM: zynq: DT: Add cadence watchdog nodeMichal Simek2014-10-201-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | Add the cadence watchdog node to the Zynq devicetree. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-31 21:17:53 +0100