From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Sascha Hauer <s.hauer@pengutronix.de>,
Lingzhu Xiang <lxiang@redhat.com>
Subject: [ 18/42] ARM: i.MX35: enable MAX clock
Date: Tue, 23 Apr 2013 14:52:16 -0700 [thread overview]
Message-ID: <20130423215207.403759053@linuxfoundation.org> (raw)
In-Reply-To: <20130423215205.523980967@linuxfoundation.org>
3.8-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sascha Hauer <s.hauer@pengutronix.de>
commit 5dc2eb7da1e387e31ce54f54af580c6a6f512ca6 upstream.
The i.MX35 has two bits per clock gate which are decoded as follows:
0b00 -> clock off
0b01 -> clock is on in run mode, off in wait/doze
0b10 -> clock is on in run/wait mode, off in doze
0b11 -> clock is always on
The reset value for the MAX clock is 0b10.
The MAX clock is needed by the SoC, yet unused in the Kernel, so the
common clock framework will disable it during late init time. It will
only disable clocks though which it detects as being turned on. This
detection is made depending on the lower bit of the gate. If the reset
value has been altered by the bootloader to 0b11 the clock framework
will detect the clock as turned on, yet unused, hence it will turn it
off and the system locks up.
This patch turns the MAX clock on unconditionally making the Kernel
independent of the bootloader.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Lingzhu Xiang <lxiang@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/arm/mach-imx/clk-imx35.c | 1 +
1 file changed, 1 insertion(+)
--- a/arch/arm/mach-imx/clk-imx35.c
+++ b/arch/arm/mach-imx/clk-imx35.c
@@ -265,6 +265,7 @@ int __init mx35_clocks_init()
clk_prepare_enable(clk[gpio3_gate]);
clk_prepare_enable(clk[iim_gate]);
clk_prepare_enable(clk[emi_gate]);
+ clk_prepare_enable(clk[max_gate]);
/*
* SCC is needed to boot via mmc after a watchdog reset. The clock code
next prev parent reply other threads:[~2013-04-23 21:52 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-23 21:51 [ 00/42] 3.8.9-stable review Greg Kroah-Hartman
2013-04-23 21:51 ` [ 01/42] powerpc: add a missing label in resume_kernel Greg Kroah-Hartman
2013-04-23 21:52 ` [ 02/42] kvm/powerpc/e500mc: fix tlb invalidation on cpu migration Greg Kroah-Hartman
2013-04-23 21:52 ` [ 03/42] ARM: Do 15e0d9e37c (ARM: pm: let platforms select cpu_suspend support) properly Greg Kroah-Hartman
2013-04-23 21:52 ` [ 04/42] kthread: Prevent unpark race which puts threads on the wrong cpu Greg Kroah-Hartman
2013-04-23 21:52 ` [ 05/42] hrtimer: Dont reinitialize a cpu_base lock on CPU_UP Greg Kroah-Hartman
2013-04-23 21:52 ` [ 06/42] can: mcp251x: add missing IRQF_ONESHOT to request_threaded_irq Greg Kroah-Hartman
2013-04-23 21:52 ` [ 07/42] can: sja1000: fix handling on dt properties on little endian systems Greg Kroah-Hartman
2013-04-23 21:52 ` [ 08/42] hugetlbfs: stop setting VM_DONTDUMP in initializing vma(VM_HUGETLB) Greg Kroah-Hartman
2013-04-23 21:52 ` [ 09/42] hugetlbfs: add swap entry check in follow_hugetlb_page() Greg Kroah-Hartman
2013-04-23 21:52 ` [ 10/42] fs/binfmt_elf.c: fix hugetlb memory check in vma_dump_size() Greg Kroah-Hartman
2013-04-23 21:52 ` [ 11/42] kernel/signal.c: stop info leak via the tkill and the tgkill syscalls Greg Kroah-Hartman
2013-04-23 21:52 ` [ 12/42] hfsplus: fix potential overflow in hfsplus_file_truncate() Greg Kroah-Hartman
2013-04-23 21:52 ` [ 13/42] md: raid1,10: Handle REQ_WRITE_SAME flag in write bios Greg Kroah-Hartman
2013-04-23 21:52 ` [ 14/42] KVM: x86: fix for buffer overflow in handling of MSR_KVM_SYSTEM_TIME (CVE-2013-1796) Greg Kroah-Hartman
2013-04-23 21:52 ` [ 15/42] KVM: x86: Convert MSR_KVM_SYSTEM_TIME to use gfn_to_hva_cache functions (CVE-2013-1797) Greg Kroah-Hartman
2013-04-23 21:52 ` [ 16/42] KVM: Fix bounds checking in ioapic indirect register reads (CVE-2013-1798) Greg Kroah-Hartman
2013-04-23 21:52 ` [ 17/42] KVM: Allow cross page reads and writes from cached translations Greg Kroah-Hartman
2013-04-23 21:52 ` Greg Kroah-Hartman [this message]
2013-04-23 21:52 ` [ 19/42] ARM: clk-imx35: Bugfix iomux clock Greg Kroah-Hartman
2013-04-23 21:52 ` [ 20/42] tg3: Add 57766 device support Greg Kroah-Hartman
2013-04-23 21:52 ` [ 21/42] sched: Convert BUG_ON()s in try_to_wake_up_local() to WARN_ON_ONCE()s Greg Kroah-Hartman
2013-04-23 21:52 ` [ 22/42] sched/debug: Fix sd->*_idx limit range avoiding overflow Greg Kroah-Hartman
2013-05-10 2:14 ` Ben Hutchings
2013-05-10 7:59 ` Ingo Molnar
2013-05-28 1:47 ` Ben Hutchings
2013-04-23 21:52 ` [ 23/42] ARM: 7696/1: Fix kexec by setting outer_cache.inv_all for Feroceon Greg Kroah-Hartman
2013-04-23 21:52 ` [ 24/42] ARM: 7698/1: perf: fix group validation when using enable_on_exec Greg Kroah-Hartman
2013-04-23 21:52 ` [ 25/42] ath9k_htc: accept 1.x firmware newer than 1.3 Greg Kroah-Hartman
2013-04-23 21:52 ` [ 26/42] ath9k_hw: change AR9580 initvals to fix a stability issue Greg Kroah-Hartman
2013-04-23 21:52 ` [ 27/42] mac80211: fix cfg80211 interaction on auth/assoc request Greg Kroah-Hartman
2013-04-23 21:52 ` [ 28/42] ssb: implement spurious tone avoidance Greg Kroah-Hartman
2013-04-23 21:52 ` [ 29/42] crypto: algif - suppress sending source address information in recvmsg Greg Kroah-Hartman
2013-04-23 21:52 ` [ 30/42] perf: Treat attr.config as u64 in perf_swevent_init() Greg Kroah-Hartman
2013-04-23 21:52 ` [ 31/42] perf/x86: Fix offcore_rsp valid mask for SNB/IVB Greg Kroah-Hartman
2013-04-23 21:52 ` [ 32/42] userns: Dont let unprivileged users trick privileged users into setting the id_map Greg Kroah-Hartman
2013-04-23 21:52 ` [ 33/42] userns: Check uid_maps openers fsuid, not the current fsuid Greg Kroah-Hartman
2013-04-23 21:52 ` [ 34/42] userns: Changing any namespace id mappings should require privileges Greg Kroah-Hartman
2013-04-23 21:52 ` [ 35/42] vm: add vm_iomap_memory() helper function Greg Kroah-Hartman
2013-04-23 21:52 ` [ 36/42] vm: convert snd_pcm_lib_mmap_iomem() to vm_iomap_memory() helper Greg Kroah-Hartman
2013-04-23 21:52 ` [ 37/42] vm: convert fb_mmap " Greg Kroah-Hartman
2013-04-23 21:52 ` [ 38/42] vm: convert HPET mmap " Greg Kroah-Hartman
2013-04-23 21:52 ` [ 39/42] vm: convert mtdchar " Greg Kroah-Hartman
2013-04-23 21:52 ` [ 40/42] Btrfs: make sure nbytes are right after log replay Greg Kroah-Hartman
2013-04-23 21:52 ` [ 41/42] s390: move dummy io_remap_pfn_range() to asm/pgtable.h Greg Kroah-Hartman
2013-04-23 21:52 ` [ 42/42] Revert "MIPS: page.h: Provide more readable definition for PAGE_MASK." Greg Kroah-Hartman
2013-04-24 16:23 ` [ 00/42] 3.8.9-stable review Shuah Khan
2013-04-24 16:24 ` Greg Kroah-Hartman
2013-04-25 10:43 ` Satoru Takeuchi
2013-04-25 14:49 ` Greg Kroah-Hartman
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