The EXYNOS5420 clocks are statically listed and registered using
the Samsung specific common clock helper functions.
Signed-off-by: Chander Kashyap <chander.kashyap@linaro.org>
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Cc: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Add DFLL DVCO reset line control functions to the CAR IP block driver.
The DVCO present in the DFLL IP block has a separate reset line,
exposed via the CAR IP block. This reset line is asserted upon SoC
reset. Unless something (such as the DFLL driver) deasserts this
line, the DVCO will not oscillate, although reads and writes to the
DFLL IP block will complete.
Thanks to Aleksandr Frid <afrid@nvidia.com> for identifying this and
saving hours of debugging time.
Signed-off-by: Paul Walmsley <pwalmsley@nvidia.com>
Cc: Aleksandr Frid <afrid@nvidia.com>
Cc: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Add the input clocks needed by the DFLL IP blocks. Initialize them to
51MHz (as required by the DFLL GFD) and to use the PLL_P clock source.
This patch is a collaboration with Peter De Schrijver
<pdeschrijver@nvidia.com>.
Thanks to Laxman Dewangan <ldewangan@nvidia.com> for identifying the
requirement to keep the DFLL clocks enabled to resolve PWR_I2C timeout
issues.
Signed-off-by: Paul Walmsley <pwalmsley@nvidia.com>
Cc: Peter De Schrijver <pdeschrijver@nvidia.com>
Reviewed-by: Andrew Chew <achew@nvidia.com>
Cc: Matthew Longnecker <mlongnecker@nvidia.com>
Cc: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
This patch adds enum entries for div_i2s1 and div_i2s2 which are
required for i2s1 and i2s2 controllers.
Signed-off-by: Padmavathi Venna <padma.v@samsung.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Audio subsystem is introduced in s5pv210 and exynos platforms.
This has seperate clock controller which can control i2s0 and
pcm0 clocks. This patch registers the audio subsystem clocks
with the common clock framework on Exynos family.
Signed-off-by: Padmavathi Venna <padma.v@samsung.com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Add clock functions to initialize, enable, and disable the FCPU clock
shapers, based on the FCPU voltage rail state. These will be used by
the DFLL clocksource driver code.
This version of the patch contains a fix for a problem noticed by Andrew
Chew <achew@nvidia.com>, where some of the FINETRIM_R bitfields were
incorrectly defined.
Based on code originally written by Aleksandr Frid <afrid@nvidia.com>.
Signed-off-by: Paul Walmsley <pwalmsley@nvidia.com>
Cc: Andrew Chew <achew@nvidia.com>
Reviewed-by: Andrew Chew <achew@nvidia.com>
Cc: Matthew Longnecker <mlongnecker@nvidia.com>
Cc: Aleksandr Frid <afrid@nvidia.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
This converts the last of the U300 clocks to being probed from
the device tree.
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This moves the slow, fast, AHB bridge and "rest" clocks on
the U300 system controller over to registration from the
device tree.
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This converts the fixed and fixed-factor clocks in the U300
platform to register themselves from the device tree.
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Get rid of the <mach/syscon.h> header as a prerequisite for
multiplatform support. Do this by pushing the registers down
to their respective drivers and deleting the unused remainder.
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Registering pciex as peripheral clock instead of fixed clock
as tegra_perih_reset_assert(deassert) api of this clock api
gives warning and ultimately does not succeed to assert(deassert)
Signed-off-by: Jay Agarwal <jagarwal@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
In Rockchip Cortex-A9 based chips, they don't use paradigm of
reading-changing-writing the register contents. Instead they
use a hiword mask to indicate the changed bits.
When b1 should be set as gate, it also needs to indicate the change
by setting hiword mask (b1 << 16).
The patch adds gate flag for this usage.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
In both Hisilicon & Rockchip Cortex-A9 based chips, they don't use the
paradigm of reading-changing-writing the register contents.
Instead they use a hiword mask to indicate the changed bits.
When b01 should be set as setting divider, it also needs to indicate
the change by setting hiword mask (b11 << 16).
The patch adds divider flag for this usage.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
In both Hisilicon & Rockchip Cortex-A9 based chips, they don't use the
paradigm of reading-changing-writing the register contents.
Instead they use a hiword mask to indicate the changed bits.
When b01 should be set as switching mux, it also needs to indicate
the change by setting hiword mask (b11 << 16).
The patch adds mux flag for this usage.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
A clock's notifier count only reflects notifiers which are registered
directly for that clock. A reparent operation though affects the whole
subtree because of a potential rate change.
When issuing the pre rate change notifications only the notifier count
for the clock to be changed is considered and notifiers for subclocks
may never be called. Resulting in clocks in the subtree which have
registered notifiers, may receive a POST_- or ABORT_RATE_CHANGE
notification, without a PRE_RATE_CHANGE_NOTIFICATION.
Therefore always traverse the whole subtree when issueing pre rate
change notifications during a reparent operation.
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
This branch contains fixes and enhancement for core Tegra Soc support:
* CPU hotplug support for Tegra114.
* Some preliminary work on Tegra114 CPU sleep modes.
* Minor fix for EMC table DT parsing.
This branch is based on v3.10-rc1.
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Merge tag 'tegra-for-3.11-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/soc
From Stephen Warren:
ARM: tegra: core SoC support enhancements
This branch contains fixes and enhancement for core Tegra Soc support:
* CPU hotplug support for Tegra114.
* Some preliminary work on Tegra114 CPU sleep modes.
* Minor fix for EMC table DT parsing.
* tag 'tegra-for-3.11-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra:
ARM: tegra: don't pass CPU ID to tegra_{set,clear}_cpu_in_lp2
ARM: tegra: cpuidle: using IS_ENABLED for multi SoCs management in init func
ARM: tegra: hook tegra_tear_down_cpu function in the PM suspend init function
ARM: tegra: cpuidle: move the init function behind the suspend init function
ARM: tegra: remove ifdef in the tegra_resume
ARM: tegra: add cpu_disable for hotplug
ARM: tegra114: add CPU hotplug support
clk: tegra114: implement wait_for_reset and disable_clock for tegra_cpu_car_ops
ARM: tegra114: add power up sequence for warm boot CPU
ARM: tegra: make tegra_resume can work for Tegra114
ARM: tegra: skip SCU and PL310 code when CPU is not Cortex-A9
ARM: tegra: add an assembly marco to check Tegra SoC ID
ARM: tegra: emc: correction of ram-code parsing from dt
Signed-off-by: Olof Johansson <olof@lixom.net>
Currently 'pmu' clock is not handled by any of the drivers.
Also before the introduction of CCF, this clock was not defined,
hence was left enabled always.
When this clock is disabled, software reset register becomes
inaccessible and system reboot doesn't work.
Upon restoring the default behaviour, system reboot starts working.
Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
clk_set_rate() uses clk->rate directly. This causes problems if the clock
is marked as CLK_GET_RATE_NOCACHE. Hence call clk_get_rate() to get the
current rate.
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
debugfs uses the rate field directly. However this ignores the
CLK_GET_RATE_NOCACHE flag. Call clk_get_rate() instead.
Tested-by: Mark Zhang <markz@nvidia.com>
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
PLLM has override bits in the PMC. Use those when PLLM_OVERRIDE_ENABLE
is set.
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Define override bits for Tegra30 PLLM.
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Define override bits for Tegra114 PLLM.
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
[mturquette@linaro.org: fixed up trivial merge conflict]
PLLM can have override bits in the PMC. Describe those in the PLL parameters.
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Use the correct parents for sclk according to the TRM.
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
The PLLRE flags weren't set correctly. Fixed in this patch.
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
The m,n,p fields don't have the same bit offset and width across all PLLs.
This patch allows SoC specific files to indicate the offset and width.
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
The pllp_out2 should be integer only, the fractional bit should always be 0.
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Add support to gate the clocks that directly feed peripherals. For clocks
with multiple parents, add the ability to determine the correct parent,
and also set parents. Also add support to calculate and set the clocks'
rate.
Signed-off-by: Dinh Nguyen <dinguyen@altera.com>
Reviewed-by: Pavel Machek <pavel@denx.de>
Acked-by: Mike Turquette <mturquette@linaro.org>
Cc: Mike Turquette <mturquette@linaro.org>
CC: Arnd Bergmann <arnd@arndb.de>
CC: Olof Johansson <olof@lixom.net>
Cc: Pavel Machek <pavel@denx.de>
CC: <linux@arm.linux.org.uk>
v4:
- Add Acked-by: Mike Turquette
v3:
- Addressed comments from Pavel
v2:
- Fix space/indent errors
- Add streq for strcmp == 0
Signed-off-by: Olof Johansson <olof@lixom.net>
The pllc and pllxc code weren't always using the correct pdiv_map to
map between the post divider value and the hw p field. This could result
in illegal values being programmed in the hw.
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
From Alexander Shiyan, this is a series of cleanups of clps711x, movig it
closer to multiplatform and cleans up a bunch of old code.
* clps711x/soc:
ARM: clps711x: Update defconfig
ARM: clps711x: Add support for SYSCON driver
ARM: clps711x: edb7211: Control LCD backlight via PWM
ARM: clps711x: edb7211: Add support for I2C
ARM: clps711x: Optimize interrupt handling
ARM: clps711x: Add clocksource framework
ARM: clps711x: Replace "arch_initcall" in common code with ".init_early"
ARM: clps711x: Move specific definitions from hardware.h to boards files
ARM: clps711x: p720t: Define PLD registers as GPIOs
ARM: clps711x: autcpu12: Move remaining specific definitions to board file
ARM: clps711x: autcpu12: Special driver for handling memory is removed
ARM: clps711x: autcpu12: Add support for NOR flash
ARM: clps711x: autcpu12: Move LCD DPOT definitions to board file
ARM: clps711x: Set PLL clock to zero if we work from 13 mHz source
ARM: clps711x: Remove NEED_MACH_MEMORY_H dependency
ARM: clps711x: Re-add GPIO support
GPIO: clps711x: Add DT support
GPIO: clps711x: Rewrite driver for using generic GPIO code
+ Linux 3.10-rc4
Signed-off-by: Olof Johansson <olof@lixom.net>
This patch is required to be able to disable spear320 support
after the spear320_clk_init() prototype changed for the real
function but not for the dummy.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Add G2D clocks for Exynos4x12 SoC and sclk_fimg2d required by G2D
IP.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
The KDIV value is often listed as unsigned but it needs to be treated
as a 16-bit signed value when using it in calculations. Fix our rate
recalculation to do this correctly.
Before doing this, I tried setting EPLL on exynos5250 to:
rate, m, p, s, k = 80000000, 107, 2, 4, 43691
This rate is exactly from the table in the exynos5250 user manual.
I read this back as 80750003 with:
cat /sys/kernel/debug/clk/fin_pll/fout_epll/clk_rate
After this patch, it reads back as 80000003
Signed-off-by: Doug Anderson <dianders@chromium.org>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Reviewed-by: Vikas Sajjan <vikas.sajjan@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
If the current rate of parent clock is sufficient to provide child a
requested rate with a proper divider setting, the rate change request
should not be propagated. Instead, changing the divider setting is good
enough to get child clock run at the requested rate.
On an imx6q clock configuration illustrated below,
ahb --> ipg --> ipg_per
132M 66M 66M
calling clk_set_rate(ipg_per, 22M) with the current
clk_divider_bestdiv() implementation will result in the rate change up
to ahb level like the following, because of the unnecessary/incorrect
rate change propagation.
ahb --> ipg --> ipg_per
66M 22M 22M
Fix the problem by trying to see if the requested rate can be achieved
by simply changing the divider value, and in that case return the
divider immediately from function clk_divider_bestdiv() as the best
one, so that all those unnecessary rate change propagation can be saved.
Reported-by: Anson Huang <b20788@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
'mout_mpll' is added the list of parent clocks for 'mout_cpu'.
'mout_mpll' is an alias to the clock 'sclk_mpll'. Hence 'sclk_mpll'
should be added to the list of parent clocks.
This results in an error when cpufreq driver for EXYNOS5250 tries to
set 'mout_mpll' as a parent for 'mout_cpu'.
clk_set_parent: clk sclk_mpll can not be parent of clk mout_cpu
Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
cpufreq driver for EXYNOS5250 is not a platform driver, hence we cannot
currently pass the clock names through a device tree node. Instead, we
need to make them available through a global alias.
cpufreq driver for EXYNOS5250 requires four clocks - 'armclk',
'mout_cpu', 'mout_mpll' and 'mout_apll'.
'armclk' has already been defined with an alias, 'mout_cpu', 'mout_mpll'
and 'mout_apll' are now defined with an alias.
Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
First clocks definition version of PRCMU and PRCC clocks for u8540 platform
Signed-off-by: Philippe Begnic <philippe.begnic@st.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Align on u8500 version, pass clock base address in clk_init functions
for u8540 and u9540.
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Philippe Begnic <philippe.begnic@st.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
The msenc clock's register was set to the usb3 clock's register.
Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Acked-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
- clk: mvebu
- reorganize by SoC to remove built up #ifdefs
- add clk flags per clock gate
Note: this branch only depends on mvebu/pcie in order to prevent managing a
tricky modify/remove file merge conflict. By rebasing on mvebu/pcie, we are
able to build the resolution into the patch series. The change is small, and
has been tested by the respective authors.
depends:
- mvebu/pcie
- mvebu/of_pci
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Merge tag 'seb_clk-3.11' of git://git.infradead.org/users/jcooper/linux into next/soc
From Jason Cooper:
mvebu clock restructuring for v3.11
- clk: mvebu
- reorganize by SoC to remove built up #ifdefs
- add clk flags per clock gate
* tag 'seb_clk-3.11' of git://git.infradead.org/users/jcooper/linux:
clk: mvebu: disintegrate obsolete file
ARM: mvebu: move DT boards to SoC-centric clock init
ARM: kirkwood: move DT boards to SoC-centric clock init
ARM: dove: move DT boards to SoC-centric clock init
clk: mvebu: add Armada XP SoC-centric clock init
clk: mvebu: add Armada 370 SoC-centric clock init
clk: mvebu: add Kirkwood SoC-centric clock init
clk: mvebu: add Dove SoC-centric clock init
clk: mvebu: add common clock functions for core clk and clk gating
clk: mvebu: introduce per-clock-gate flags
- mvebu pcie
- fix return value check in mvebu_pcie_probe()
depends
- mvebu/of_pci
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Merge tag 'pcie-3.11-2' of git://git.infradead.org/users/jcooper/linux into next/soc
PCI-e driver for mvebu.
* tag 'pcie-3.11-2' of git://git.infradead.org/users/jcooper/linux:
pci: mvebu: fix return value check in mvebu_pcie_probe()
arm: mvebu: PCIe support is now available on mvebu
pci: PCIe driver for Marvell Armada 370/XP systems
clk: mvebu: add more PCIe clocks for Armada XP
clk: mvebu: create parent-child relation for PCIe clocks on Armada 370
of/pci: Add of_pci_parse_bus_range() function
of/pci: Add of_pci_get_devfn() function
of/pci: Provide support for parsing PCI DT ranges property
Signed-off-by: Olof Johansson <olof@lixom.net>
Use common of_clk_init() function for clocks initialization.
Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Reviewed-by: Thierry Reding <thierry.reding@gmail.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Tegra has a blink timer register that allows to modulate the
clk_32k clock before outputting it. Since clk_32k is presented to the
kernel as a fixed clock, make sure this register does not tamper with
the clock frequency and that clk_32k is outputted as-is, similarly to
what is done on t20 and t30.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Number of parents for clk_out_2 and clk_out_3 was incorrectly set
to clk_out1_parents. Even though it did not break anything since the
size was same better to fix.
Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Reviewed-by: Thierry Reding <thierry.reding@gmail.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
This patch adds a basic clock driver for the TI-Nspire calculator
series.
Changes from v1:
* Removed filename in header comment
* Removed unnecessary #undef EXTRACT statement
Signed-off-by: Daniel Tang <dt.tangr@gmail.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
[mturquette@linaro.org: fixed $SUBJECT and changelog max width]
Fix the following sparse warnings:
drivers/clk/mxs/clk-imx28.c:72:5: warning: symbol 'mxs_saif_clkmux_select' was not declared. Should it be static?
drivers/clk/mxs/clk-imx28.c:156:12: warning: symbol 'mx28_clocks_init' was not declared. Should it be static?
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
[mturquette@linaro.org: fixed $SUBJECT line]
