From: Greg KH <gregkh@suse.de>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: torvalds@linux-foundation.org, akpm@linux-foundation.org,
alan@lxorguk.ukuu.org.uk, Jason Chen <jason.chen@linaro.org>,
Sascha Hauer <s.hauer@pengutronix.de>
Subject: [33/67] ARM:imx:fix pwm period value
Date: Tue, 03 Jan 2012 14:29:51 -0800 [thread overview]
Message-ID: <20120103223034.139196922@clark.kroah.org> (raw)
In-Reply-To: <20120103223043.GA26738@kroah.com>
3.0-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jason Chen <jason.chen@linaro.org>
commit 5776ac2eb33164c77cdb4d2b48feee15616eaba3 upstream.
According to imx pwm RM, the real period value should be
PERIOD value in PWMPR plus 2.
PWMO (Hz) = PCLK(Hz) / (period +2)
Signed-off-by: Jason Chen <jason.chen@linaro.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
arch/arm/plat-mxc/pwm.c | 9 +++++++++
1 file changed, 9 insertions(+)
--- a/arch/arm/plat-mxc/pwm.c
+++ b/arch/arm/plat-mxc/pwm.c
@@ -77,6 +77,15 @@ int pwm_config(struct pwm_device *pwm, i
do_div(c, period_ns);
duty_cycles = c;
+ /*
+ * according to imx pwm RM, the real period value should be
+ * PERIOD value in PWMPR plus 2.
+ */
+ if (period_cycles > 2)
+ period_cycles -= 2;
+ else
+ period_cycles = 0;
+
writel(duty_cycles, pwm->mmio_base + MX3_PWMSAR);
writel(period_cycles, pwm->mmio_base + MX3_PWMPR);
next prev parent reply other threads:[~2012-01-03 22:29 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-03 22:30 [00/67] 3.0.16-stable review Greg KH
2012-01-03 22:29 ` [01/67] ARM: OMAP: rx51: fix USB Greg KH
2012-01-03 22:29 ` [02/67] ipip, sit: copy parms.name after register_netdevice Greg KH
2012-01-03 22:29 ` [03/67] rtc: Expire alarms after the time is set Greg KH
2012-01-03 22:46 ` John Stultz
2012-01-03 22:47 ` Greg KH
2012-01-03 23:11 ` John Stultz
2012-01-03 22:29 ` [04/67] rtc: m41t80: Workaround broken alarm functionality Greg KH
2012-01-03 22:29 ` [05/67] drm/i915: prevent division by zero when asking for chipset power Greg KH
2012-01-03 22:29 ` [06/67] cfq-iosched: free cic_index if blkio_alloc_blkg_stats fails Greg KH
2012-01-03 22:29 ` [07/67] cfq-iosched: fix cfq_cic_link() race confition Greg KH
2012-01-03 22:29 ` [08/67] SCSI: zfcp: return early from slave_destroy if slave_alloc returned early Greg KH
2012-01-03 22:29 ` [09/67] SCSI: mpt2sas: _scsih_smart_predicted_fault uses GFP_KERNEL in interrupt context Greg KH
2012-01-03 22:29 ` [10/67] SCSI: fcoe: Fix preempt count leak in fcoe_filter_frames() Greg KH
2012-01-03 22:29 ` [11/67] mac80211: fix another race in aggregation start Greg KH
2012-01-03 22:29 ` [12/67] block: initialize request_queues numa node during Greg KH
2012-01-03 22:29 ` [13/67] ssb: fix init regression with SoCs Greg KH
2012-01-03 22:29 ` [14/67] MXC PWM: should active during DOZE/WAIT/DBG mode Greg KH
2012-01-03 22:29 ` [15/67] Input: synaptics - fix touchpad not working after S2R on Vostro V13 Greg KH
2012-01-03 22:29 ` [16/67] percpu: fix per_cpu_ptr_to_phys() handling of non-page-aligned addresses Greg KH
2012-01-03 22:29 ` [17/67] binary_sysctl(): fix memory leak Greg KH
2012-01-03 22:29 ` [18/67] oom: fix integer overflow of points in oom_badness Greg KH
2012-01-03 22:29 ` [19/67] oprofile: Fix uninitialized memory access when writing to writing to oprofilefs Greg KH
2012-01-03 22:29 ` [20/67] NFSv4.1: Ensure that we handle _all_ SEQUENCE status bits Greg KH
2012-01-03 22:29 ` [21/67] SELinux: Fix RCU deref check warning in sel_netport_insert() Greg KH
2012-01-03 22:29 ` [22/67] nilfs2: unbreak compat ioctl Greg KH
2012-01-03 22:29 ` [23/67] mmc: vub300: fix type of firmware_rom_wait_states module parameter Greg KH
2012-01-03 22:29 ` [24/67] cgroups: fix a css_set not found bug in cgroup_attach_proc Greg KH
2012-01-03 22:29 ` [25/67] mfd: Fix twl-core oops while calling twl_i2c_* for unbound driver Greg KH
2012-01-03 22:29 ` [26/67] vfs: __read_cache_page should use gfp argument rather than GFP_KERNEL Greg KH
2012-01-03 22:29 ` [27/67] media: s5p-fimc: Use correct fourcc for RGB565 colour format Greg KH
2012-01-03 22:29 ` [28/67] ath9k: fix max phy rate at rate control init Greg KH
2012-01-03 22:29 ` [29/67] iwlwifi: do not set the sequence control bit is not needed Greg KH
2012-01-03 22:29 ` [30/67] iwlwifi: allow to switch to HT40 if not associated Greg KH
2012-01-03 22:29 ` [31/67] memcg: keep root group unchanged if creation fails Greg KH
2012-01-03 22:29 ` [32/67] VFS: Fix race between CPU hotplug and lglocks Greg KH
2012-01-03 22:29 ` Greg KH [this message]
2012-01-03 22:29 ` [34/67] ARM: 7214/1: mmc: mmci: Fixup handling of MCI_STARTBITERR Greg KH
2012-01-03 22:29 ` [35/67] ARM: 7220/1: mmc: mmci: Fixup error handling for dma Greg KH
2012-01-03 22:29 ` [36/67] oprofile, arm/sh: Fix oprofile_arch_exit() linkage issue Greg KH
2012-01-03 22:29 ` [37/67] futex: Fix uninterruptible loop due to gate_area Greg KH
2012-01-03 22:29 ` [38/67] watchdog: hpwdt: Changes to handle NX secure bit in 32bit path Greg KH
2012-01-03 22:29 ` [39/67] drm/radeon/kms: bail on BTC parts if MC ucode is missing Greg KH
2012-01-03 22:29 ` [40/67] mm: hugetlb: fix non-atomic enqueue of huge page Greg KH
2012-01-03 22:29 ` [41/67] mpt2sas crashes on shutdown Greg KH
2012-01-03 22:30 ` [42/67] sparc64: Fix MSIQ HV call ordering in pci_sun4v_msiq_build_irq() Greg KH
2012-01-03 22:30 ` [43/67] sparc32: Be less strict in matching %lo part of relocation Greg KH
2012-01-03 22:30 ` [44/67] sparc64: Patch sun4v code sequences properly on module load Greg KH
2012-01-03 22:30 ` [45/67] sparc: Kill custom io_remap_pfn_range() Greg KH
2012-01-03 22:30 ` [46/67] sparc32: Remove non-kernel code from memcpy implementation Greg KH
2012-01-03 22:30 ` [47/67] sparc32: Remove uses of %g7 in " Greg KH
2012-01-03 22:30 ` [48/67] sparc32: Correct the return value of memcpy Greg KH
2012-01-03 22:30 ` [49/67] sparc64: Fix masking and shifting in VIS fpcmp emulation Greg KH
2012-01-03 22:30 ` [50/67] sparc: Fix handling of orig_i0 wrt. debugging when restarting syscalls Greg KH
2012-01-03 22:30 ` [51/67] net: bpf_jit: fix an off-one bug in x86_64 cond jump target Greg KH
2012-01-03 22:30 ` [52/67] ppp: fix pptp double release_sock in pptp_bind() Greg KH
2012-01-03 22:30 ` [53/67] llc: llc_cmsg_rcv was getting called after sk_eat_skb Greg KH
2012-01-03 22:30 ` [54/67] mqprio: Avoid panic if no options are provided Greg KH
2012-01-03 22:30 ` [55/67] net: have ipconfig not wait if no dev is available Greg KH
2012-01-03 22:30 ` [56/67] sch_gred: should not use GFP_KERNEL while holding a spinlock Greg KH
2012-01-03 22:30 ` [57/67] sctp: fix incorrect overflow check on autoclose Greg KH
2012-01-03 22:30 ` [58/67] sctp: Do not account for sizeof(struct sk_buff) in estimated rwnd Greg KH
2012-01-03 22:30 ` [59/67] ipv4: flush route cache after change accept_local Greg KH
2012-01-03 22:30 ` [60/67] ipv4: reintroduce route cache garbage collector Greg KH
2012-01-03 22:30 ` [61/67] ipv4: using prefetch requires including prefetch.h Greg KH
2012-01-03 22:30 ` [62/67] iwlwifi: update SCD BC table for all SCD queues Greg KH
2012-01-03 22:30 ` [63/67] mfd: Fix mismatch in twl4030 mutex lock-unlock Greg KH
2012-01-03 22:30 ` [64/67] mfd: Copy the device pointer to the twl4030-madc structure Greg KH
2012-01-03 22:30 ` [65/67] mfd: Check for twl4030-madc NULL pointer Greg KH
2012-01-03 22:30 ` [66/67] mfd: Turn on the twl4030-madc MADC clock Greg KH
2012-01-03 22:30 ` [67/67] xen/swiotlb: Use page alignment for early buffer allocation Greg KH
2012-01-05 19:18 ` [00/67] 3.0.16-stable review Greg KH
2012-01-05 19:26 ` Greg KH
2012-01-05 22:46 ` Greg KH
2012-01-05 22:44 ` [40/73] mpt2sas: fix non-x86 crash on shutdown Greg KH
2012-01-05 22:44 ` [67/73] xfs: log the inode in ->write_inode calls for kupdate Greg KH
2012-01-05 22:44 ` [68/73] xfs: log all dirty inodes in xfs_fs_sync_fs Greg KH
2012-01-05 22:44 ` [69/73] drm/radeon/kms/atom: fix possible segfault in pm setup Greg KH
2012-01-05 22:44 ` [70/73] hung_task: fix false positive during vfork Greg KH
2012-01-05 22:44 ` [71/73] Revert "rtc: Disable the alarm in the hardware" Greg KH
2012-01-05 22:44 ` [72/73] ptrace: partially fix the do_wait(WEXITED) vs EXIT_DEAD->EXIT_ZOMBIE race Greg KH
2012-01-05 22:44 ` [73/73] ath9k: Fix kernel panic in AR2427 in AP mode Greg KH
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